!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.torque=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
/**
 * Abstract handler for animator steps
 */
var AnimatorStepsRange = function(start, end) {
  if (start < 0) throw new Error('start must be a positive number');
  if (start >= end) throw new Error('start must be smaller than end');

  this.start = start;
  this.end = end;
};

AnimatorStepsRange.prototype = {

  diff: function() {
    return this.end - this.start;
  },

  isLast: function(step) {
    // round step into an integer, to be able to compare number as expected (also converts bad input to 0)
    return (step | 0) === this.end;
  }
};

module.exports = AnimatorStepsRange;

},{}],2:[function(require,module,exports){
(function (global){
var torque = require('./');
var AnimatorStepsRange = require('./animator-steps-range');

var requestAnimationFrame = global.requestAnimationFrame
    || global.mozRequestAnimationFrame
    || global.webkitRequestAnimationFrame
    || global.msRequestAnimationFrame
    || function(callback) { return global.setTimeout(callback, 1000 / 60); };

var cancelAnimationFrame = global.cancelAnimationFrame
    || global.mozCancelAnimationFrame
    || global.webkitCancelAnimationFrame
    || global.msCancelAnimationFrame
    || function(id) { clearTimeout(id); };

  /**
   * options:
   *    animationDuration in seconds
   *    animationDelay in seconds
   */
  function Animator(callback, options) {
    if(!options.steps) {
      throw new Error("steps option missing")
    }
    this.options = options;
    this.running = false;
    this._tick = this._tick.bind(this);
    this._t0 = +new Date();
    this.callback = callback;
    this._time = 0.0;
    this.itemsReady = false;

    this.options = torque.extend({
        animationDelay: 0,
        maxDelta: 0.2,
        loop: options.loop === undefined ? true : options.loop
    }, this.options);

    this.steps(options.steps);
  }

  Animator.prototype = {

    start: function() {
        this.running = true;
        requestAnimationFrame(this._tick);
        this.options.onStart && this.options.onStart();
        if (this.stepsRange().diff() === 1) {
          this.running = false;
        }
    },

    isRunning: function() {
      return this.running;
    },

    stop: function() {
      this.pause();
      this.time(this.stepsRange().start);
      this.options.onStop && this.options.onStop();
    },

    // real animation time
    time: function(_) {
      if (!arguments.length) return this._time;
      this._time = _;
      var t = this.range(this.domain(this._time));
      this.callback(t);
    },

    toggle: function() {
      if (this.running) {
        this.pause()
      } else {
        this.start()
      }
    },

    rescale: function() {
      this.domainInv = torque.math.linear(this.options.animationDelay, this.options.animationDelay + this.options.animationDuration);
      this.domain = this.domainInv.invert();
      this.range = torque.math.linear(0, this._defaultStepsRange.end);
      this.rangeInv = this.range.invert();
      this.time(this._time);
      this.running? this.start(): this.pause();
      return this;
    },

    duration: function(_) {
      if (!arguments.length)  return this.options.animationDuration;
      this.options.animationDuration = _;
      if (this.time() > _) {
        this.time(0);
      }
      this.rescale();
      return this;
    },

    steps: function(_) {
      this.options.steps = _;
      this._defaultStepsRange = new AnimatorStepsRange(0, _);
      return this.rescale();
    },

    // Returns or sets a (custom) steps range
    // Setting a steps range must be within the full range
    stepsRange: function(start, end) {
      if (arguments.length === 2) {
        if (start < this._defaultStepsRange.start) throw new Error('start must be within default steps range');
        if (end > this._defaultStepsRange.end) throw new Error('end must be within default steps range');

        this._customStepsRange = new AnimatorStepsRange(start, end);
        this.options.onStepsRange && this.options.onStepsRange();

        // Change current step if it's outside the new custom range
        var step = this.step() | 0; // round to an integer
        if (step < start || step > end) {
          this.step(start);
        }
      }
      return this._customStepsRange || this._defaultStepsRange;
    },

    removeCustomStepsRange: function() {
      this._customStepsRange = undefined;
      this.options.onStepsRange && this.options.onStepsRange();
    },

    step: function(s) {
      if(arguments.length === 0) return this.range(this.domain(this._time));
      this._time = this.domainInv(this.rangeInv(s));
    },

    pause: function() {
      this.running = false;
      cancelAnimationFrame(this._tick);
      this.options.onPause && this.options.onPause();
    },

    _tick: function() {
      var t1 = +new Date();
      var delta = (t1 - this._t0)*0.001;
      // if delta is really big means the tab lost the focus
      // at some point, so limit delta change
      delta = Math.min(this.options.maxDelta, delta);
      this._t0 = t1;
      this._time += delta;

      var stepsRange = this.stepsRange();
      if (stepsRange.isLast(this.step())) {
        if(!this.options.loop){
          // set time to max time
          this.time(this.options.animationDuration);
          this.pause();
        } else {
          this.step(stepsRange.start);
        }
      }
      if(this.running) {
        this.time(this._time);
        requestAnimationFrame(this._tick);
      }
    }

  };

module.exports = Animator;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./":11,"./animator-steps-range":1}],3:[function(require,module,exports){
var _torque_reference_latest = {
    "version": "1.0.0",
    "style": {
        "comp-op": {
            "css": "comp-op",
            "default-value": "src-over",
            "default-meaning": "add the current layer on top of other layers",
            "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
            "type": [
                "src", //
                "src-over", //
                "dst-over", //
                "src-in", //
                "dst-in", //
                "src-out", //
                "dst-out", //
                "src-atop", //
                "dst-atop", //
                "xor", //
                "darken", //
                "lighten" //
            ]
        }
    },
    "layer" : {
        "buffer-size": {
            "default-value": "0",
            "type":"float",
            "default-meaning": "No buffer will be used",
            "doc": "Extra tolerance around the Layer extent (in pixels) used to when querying and (potentially) clipping the layer data during rendering"
        },
        "-torque-clear-color": {
            "css": "-torque-clear-color",
            "type": "color",
            "default-value": "rgba(255, 255, 255, 0)",
            "default-meaning": "full clear",
            "doc": "color used to clear canvas on each frame"
        },
        "-torque-frame-count": {
            "css": "-torque-frame-count",
            "default-value": "128",
            "type":"number",
            "default-meaning": "the data is broken into 128 time frames",
            "doc": "Number of animation steps/frames used in the animation. If the data contains a fewere number of total frames, the lesser value will be used."
        },
        "-torque-resolution": {
            "css": "-torque-resolution",
            "default-value": "2",
            "type":"number",
            "default-meaning": "",
            "doc": "Spatial resolution in pixels. A resolution of 1 means no spatial aggregation of the data. Any other resolution of N results in spatial aggregation into cells of NxN pixels. The value N must be power of 2"
        },
        "-torque-animation-duration": {
            "css": "-torque-animation-duration",
            "default-value": "30",
            "type":"number",
            "default-meaning": "the animation lasts 30 seconds",
            "doc": "Animation duration in seconds"
        },
        "-torque-aggregation-function": {
            "css": "-torque-aggregation-function",
            "default-value": "count(cartodb_id)",
            "type": "string",
            "default-meaning": "the value for each cell is the count of points in that cell",
            "doc": "A function used to calculate a value from the aggregate data for each cell. See -torque-resolution"
        },
        "-torque-time-attribute": {
            "css": "-torque-time-attribute",
            "default-value": "time",
            "type": "string",
            "default-meaning": "the data column in your table that is of a time based type",
            "doc": "The table column that contains the time information used create the animation"
        },
        "-torque-data-aggregation": {
            "css": "-torque-data-aggregation",
            "default-value": "linear",
            "type": [
              "cumulative"
            ],
            "default-meaning": "previous values are discarded",
            "doc": "A linear animation will discard previous values while a cumulative animation will accumulate them until it restarts"
        }
    },
    "symbolizers" : {
        "*": {
            "comp-op": {
                "css": "comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current layer on top of other layers",
                "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
                "type": [
                  "src", //
                  "src-over", //
                  "dst-over", //
                  "src-in", //
                  "dst-in", //
                  "src-out", //
                  "dst-out", //
                  "src-atop", //
                  "dst-atop", //
                  "xor", //
                  "darken", //
                  "lighten" //
                ]
            },
            "opacity": {
                "css": "opacity",
                "type": "float",
                "doc": "An alpha value for the style (which means an alpha applied to all features in separate buffer and then composited back to main buffer)",
                "default-value": 1,
                "default-meaning": "no separate buffer will be used and no alpha will be applied to the style after rendering"
            }
        },
        "trail": {
          "steps": {
            "css": "trail-steps",
            "type": "float",
            "default-value": 1,
            "default-meaning": "no trail steps",
            "doc": "How many steps of trails are going to be rendered"
          }
        },
        "polygon": {
            "fill": {
                "css": "polygon-fill",
                "type": "color",
                "default-value": "rgba(128,128,128,1)",
                "default-meaning": "gray and fully opaque (alpha = 1), same as rgb(128,128,128)",
                "doc": "Fill color to assign to a polygon"
            },
            "fill-opacity": {
                "css": "polygon-opacity",
                "type": "float",
                "doc": "The opacity of the polygon",
                "default-value": 1,
                "default-meaning": "opaque"
            }
        },
        "line": {
            "stroke": {
                "css": "line-color",
                "default-value": "rgba(0,0,0,1)",
                "type": "color",
                "default-meaning": "black and fully opaque (alpha = 1), same as rgb(0,0,0)",
                "doc": "The color of a drawn line"
            },
            "stroke-width": {
                "css": "line-width",
                "default-value": 1,
                "type": "float",
                "doc": "The width of a line in pixels"
            },
            "stroke-opacity": {
                "css": "line-opacity",
                "default-value": 1,
                "type": "float",
                "default-meaning": "opaque",
                "doc": "The opacity of a line"
            },
            "stroke-linejoin": {
                "css": "line-join",
                "default-value": "miter",
                "type": [
                    "miter",
                    "round",
                    "bevel"
                ],
                "doc": "The behavior of lines when joining"
            },
            "stroke-linecap": {
                "css": "line-cap",
                "default-value": "butt",
                "type": [
                    "butt",
                    "round",
                    "square"
                ],
                "doc": "The display of line endings"
            }
        },
        "markers": {
            "file": {
                "css": "marker-file",
                "doc": "An SVG file that this marker shows at each placement. If no file is given, the marker will show an ellipse.",
                "default-value": "",
                "default-meaning": "An ellipse or circle, if width equals height",
                "type": "uri"
            },
            "opacity": {
                "css": "marker-opacity",
                "doc": "The overall opacity of the marker, if set, overrides both the opacity of both the fill and stroke",
                "default-value": 1,
                "default-meaning": "The stroke-opacity and fill-opacity will be used",
                "type": "float"
            },
            "fill-opacity": {
                "css": "marker-fill-opacity",
                "doc": "The fill opacity of the marker",
                "default-value": 1,
                "default-meaning": "opaque",
                "type": "float"
            },
            "stroke": {
                "css": "marker-line-color",
                "doc": "The color of the stroke around a marker shape.",
                "default-value": "black",
                "type": "color"
            },
            "stroke-width": {
                "css": "marker-line-width",
                "doc": "The width of the stroke around a marker shape, in pixels. This is positioned on the boundary, so high values can cover the area itself.",
                "type": "float"
            },
            "stroke-opacity": {
                "css": "marker-line-opacity",
                "default-value": 1,
                "default-meaning": "opaque",
                "doc": "The opacity of a line",
                "type": "float"
            },
            "fill": {
                "css": "marker-fill",
                "default-value": "blue",
                "doc": "The color of the area of the marker.",
                "type": "color"
            },
            "marker-type": {
                "css": "marker-type",
                "type": [
                    "rectangle",
                    "ellipse"
                ],
                "default-value": "ellipse",
                "doc": "The default marker-type. If a SVG file is not given as the marker-file parameter, the renderer provides either an rectangle or an ellipse (a circle if height is equal to width)"
            },
             "width": {
                "css": "marker-width",
                "default-value": 10,
                "doc": "The width of the marker, if using one of the default types.",
                "type": "float"
            }
        },
        "point": {
            "file": {
                "css": "point-file",
                "type": "uri",
                "required": false,
                "default-value": "none",
                "doc": "Image file to represent a point"
            },
            "opacity": {
                "css": "point-opacity",
                "type": "float",
                "default-value": 1.0,
                "default-meaning": "Fully opaque",
                "doc": "A value from 0 to 1 to control the opacity of the point"
            }
        }
    },
    "colors": {
        "aliceblue":  [240, 248, 255],
        "antiquewhite":  [250, 235, 215],
        "aqua":  [0, 255, 255],
        "aquamarine":  [127, 255, 212],
        "azure":  [240, 255, 255],
        "beige":  [245, 245, 220],
        "bisque":  [255, 228, 196],
        "black":  [0, 0, 0],
        "blanchedalmond":  [255,235,205],
        "blue":  [0, 0, 255],
        "blueviolet":  [138, 43, 226],
        "brown":  [165, 42, 42],
        "burlywood":  [222, 184, 135],
        "cadetblue":  [95, 158, 160],
        "chartreuse":  [127, 255, 0],
        "chocolate":  [210, 105, 30],
        "coral":  [255, 127, 80],
        "cornflowerblue":  [100, 149, 237],
        "cornsilk":  [255, 248, 220],
        "crimson":  [220, 20, 60],
        "cyan":  [0, 255, 255],
        "darkblue":  [0, 0, 139],
        "darkcyan":  [0, 139, 139],
        "darkgoldenrod":  [184, 134, 11],
        "darkgray":  [169, 169, 169],
        "darkgreen":  [0, 100, 0],
        "darkgrey":  [169, 169, 169],
        "darkkhaki":  [189, 183, 107],
        "darkmagenta":  [139, 0, 139],
        "darkolivegreen":  [85, 107, 47],
        "darkorange":  [255, 140, 0],
        "darkorchid":  [153, 50, 204],
        "darkred":  [139, 0, 0],
        "darksalmon":  [233, 150, 122],
        "darkseagreen":  [143, 188, 143],
        "darkslateblue":  [72, 61, 139],
        "darkslategrey":  [47, 79, 79],
        "darkturquoise":  [0, 206, 209],
        "darkviolet":  [148, 0, 211],
        "deeppink":  [255, 20, 147],
        "deepskyblue":  [0, 191, 255],
        "dimgray":  [105, 105, 105],
        "dimgrey":  [105, 105, 105],
        "dodgerblue":  [30, 144, 255],
        "firebrick":  [178, 34, 34],
        "floralwhite":  [255, 250, 240],
        "forestgreen":  [34, 139, 34],
        "fuchsia":  [255, 0, 255],
        "gainsboro":  [220, 220, 220],
        "ghostwhite":  [248, 248, 255],
        "gold":  [255, 215, 0],
        "goldenrod":  [218, 165, 32],
        "gray":  [128, 128, 128],
        "grey":  [128, 128, 128],
        "green":  [0, 128, 0],
        "greenyellow":  [173, 255, 47],
        "honeydew":  [240, 255, 240],
        "hotpink":  [255, 105, 180],
        "indianred":  [205, 92, 92],
        "indigo":  [75, 0, 130],
        "ivory":  [255, 255, 240],
        "khaki":  [240, 230, 140],
        "lavender":  [230, 230, 250],
        "lavenderblush":  [255, 240, 245],
        "lawngreen":  [124, 252, 0],
        "lemonchiffon":  [255, 250, 205],
        "lightblue":  [173, 216, 230],
        "lightcoral":  [240, 128, 128],
        "lightcyan":  [224, 255, 255],
        "lightgoldenrodyellow":  [250, 250, 210],
        "lightgray":  [211, 211, 211],
        "lightgreen":  [144, 238, 144],
        "lightgrey":  [211, 211, 211],
        "lightpink":  [255, 182, 193],
        "lightsalmon":  [255, 160, 122],
        "lightseagreen":  [32, 178, 170],
        "lightskyblue":  [135, 206, 250],
        "lightslategray":  [119, 136, 153],
        "lightslategrey":  [119, 136, 153],
        "lightsteelblue":  [176, 196, 222],
        "lightyellow":  [255, 255, 224],
        "lime":  [0, 255, 0],
        "limegreen":  [50, 205, 50],
        "linen":  [250, 240, 230],
        "magenta":  [255, 0, 255],
        "maroon":  [128, 0, 0],
        "mediumaquamarine":  [102, 205, 170],
        "mediumblue":  [0, 0, 205],
        "mediumorchid":  [186, 85, 211],
        "mediumpurple":  [147, 112, 219],
        "mediumseagreen":  [60, 179, 113],
        "mediumslateblue":  [123, 104, 238],
        "mediumspringgreen":  [0, 250, 154],
        "mediumturquoise":  [72, 209, 204],
        "mediumvioletred":  [199, 21, 133],
        "midnightblue":  [25, 25, 112],
        "mintcream":  [245, 255, 250],
        "mistyrose":  [255, 228, 225],
        "moccasin":  [255, 228, 181],
        "navajowhite":  [255, 222, 173],
        "navy":  [0, 0, 128],
        "oldlace":  [253, 245, 230],
        "olive":  [128, 128, 0],
        "olivedrab":  [107, 142, 35],
        "orange":  [255, 165, 0],
        "orangered":  [255, 69, 0],
        "orchid":  [218, 112, 214],
        "palegoldenrod":  [238, 232, 170],
        "palegreen":  [152, 251, 152],
        "paleturquoise":  [175, 238, 238],
        "palevioletred":  [219, 112, 147],
        "papayawhip":  [255, 239, 213],
        "peachpuff":  [255, 218, 185],
        "peru":  [205, 133, 63],
        "pink":  [255, 192, 203],
        "plum":  [221, 160, 221],
        "powderblue":  [176, 224, 230],
        "purple":  [128, 0, 128],
        "red":  [255, 0, 0],
        "rosybrown":  [188, 143, 143],
        "royalblue":  [65, 105, 225],
        "saddlebrown":  [139, 69, 19],
        "salmon":  [250, 128, 114],
        "sandybrown":  [244, 164, 96],
        "seagreen":  [46, 139, 87],
        "seashell":  [255, 245, 238],
        "sienna":  [160, 82, 45],
        "silver":  [192, 192, 192],
        "skyblue":  [135, 206, 235],
        "slateblue":  [106, 90, 205],
        "slategray":  [112, 128, 144],
        "slategrey":  [112, 128, 144],
        "snow":  [255, 250, 250],
        "springgreen":  [0, 255, 127],
        "steelblue":  [70, 130, 180],
        "tan":  [210, 180, 140],
        "teal":  [0, 128, 128],
        "thistle":  [216, 191, 216],
        "tomato":  [255, 99, 71],
        "turquoise":  [64, 224, 208],
        "violet":  [238, 130, 238],
        "wheat":  [245, 222, 179],
        "white":  [255, 255, 255],
        "whitesmoke":  [245, 245, 245],
        "yellow":  [255, 255, 0],
        "yellowgreen":  [154, 205, 50],
        "transparent":  [0, 0, 0, 0]
    }
};

module.exports = {
  version: {
    latest: _torque_reference_latest,
    '1.0.0': _torque_reference_latest
  }
};

},{}],4:[function(require,module,exports){
(function (global){
//
// common functionallity for torque layers
//
var carto = global.carto || require('carto');

function TorqueLayer() {}

TorqueLayer.prototype = {
};

TorqueLayer.optionsFromLayer = function(mapConfig) {
  var opts = {};
  if (!mapConfig) return opts;
  var attrs = {
    'buffer-size': 'buffer-size',
    '-torque-frame-count': 'steps',
    '-torque-resolution': 'resolution',
    '-torque-animation-duration': 'animationDuration',
    '-torque-aggregation-function': 'countby',
    '-torque-time-attribute': 'column',
    '-torque-data-aggregation': 'data_aggregation'
  };
  for (var i in attrs) {
    var v = mapConfig.eval(i);
    if (v !== undefined) {
      var a = attrs[i];
      opts[a] = v;
    }
  }
  return opts;
};

TorqueLayer.optionsFromCartoCSS = function(cartocss) {
  var shader = new carto.RendererJS().render(cartocss);
  var mapConfig = shader.findLayer({ name: 'Map' });
  return TorqueLayer.optionsFromLayer(mapConfig);
};

module.exports.TorqueLayer = TorqueLayer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"carto":40}],5:[function(require,module,exports){
(function (global){
  var Event = {};
  Event.on = function(evt, callback) {
      var cb = this._evt_callbacks = this._evt_callbacks || {};
      var l = cb[evt] || (cb[evt] = []);
      l.push(callback);
      return this;
  };

  Event.trigger = function(evt) {
      var c = this._evt_callbacks && this._evt_callbacks[evt];
      for(var i = 0; c && i < c.length; ++i) {
          c[i].apply(this, Array.prototype.slice.call(arguments, 1));
      }
      return this;
  };

  Event.fire = Event.trigger;

  Event.off = function (evt, callback) {
      var c = this._evt_callbacks && this._evt_callbacks[evt];
      if (c && !callback) {
        delete this._evt_callbacks[evt];
        return this;
     }
     var remove = [];
     for(var i = 0; c && i < c.length; ++i) {
       if(c[i] === callback) remove.push(i);
     }
     while((i = remove.pop()) !== undefined) c.splice(i, 1);
    return this;
  };

  Event.callbacks = function(evt) {
    return (this._evt_callbacks && this._evt_callbacks[evt]) || [];
  };

  function extend() {
      var objs = arguments;
      var a = objs[0];
      for (var i = 1; i < objs.length; ++i) {
          var b = objs[i];
          for (var k in b) {
              a[k] = b[k];
          }
      }
      return a;
  }

  function clone(a) {
    return extend({}, a);
  }

  function isFunction(f) {
    return typeof f == 'function' || false;
  }

  function isArray(value) {
      return value && typeof value == 'object' && Object.prototype.toString.call(value) == '[object Array]';
  }

  // types
  var types = {
    Uint8Array: typeof(global['Uint8Array']) !== 'undefined' ? global.Uint8Array : Array,
    Uint8ClampedArray: typeof(global['Uint8ClampedArray']) !== 'undefined' ? global.Uint8ClampedArray: Array,
    Uint32Array: typeof(global['Uint32Array']) !== 'undefined' ? global.Uint32Array : Array,
    Int16Array: typeof(global['Int16Array']) !== 'undefined' ? global.Int16Array : Array,
    Int32Array: typeof(global['Int32Array']) !== 'undefined' ? global.Int32Array: Array
  };

  function isBrowserSupported() {
    return !!document.createElement('canvas');
  }

  function userAgent() {
      return typeof navigator !== 'undefined' ? navigator.userAgent : '';
  }

  var flags = {
    sprites_to_images: userAgent().indexOf('Safari') === -1 && userAgent().indexOf('Firefox') === -1
  };

module.exports = {
    Event: Event,
    extend: extend,
    clone: clone,
    isFunction: isFunction,
    isArray: isArray,
    types: types,
    isBrowserSupported: isBrowserSupported,
    flags: flags
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],6:[function(require,module,exports){
/**
 * @license
 * Copyright 2013 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @fileoverview Extends OverlayView to provide a canvas "Layer".
 * @author Brendan Kenny
 */

/**
 * A map layer that provides a canvas over the slippy map and a callback
 * system for efficient animation. Requires canvas and CSS 2D transform
 * support.
 * @constructor
 * @extends google.maps.OverlayView
 * @param {CanvasLayerOptions=} opt_options Options to set in this CanvasLayer.
 */

function CanvasLayer(opt_options) {
  /**
   * If true, canvas is in a map pane and the OverlayView is fully functional.
   * See google.maps.OverlayView.onAdd for more information.
   * @type {boolean}
   * @private
   */
  this.isAdded_ = false;

  /**
   * If true, each update will immediately schedule the next.
   * @type {boolean}
   * @private
   */
  this.isAnimated_ = false;

  /**
   * The name of the MapPane in which this layer will be displayed.
   * @type {string}
   * @private
   */
  this.paneName_ = CanvasLayer.DEFAULT_PANE_NAME_;

  /**
   * A user-supplied function called whenever an update is required. Null or
   * undefined if a callback is not provided.
   * @type {?function=}
   * @private
   */
  this.updateHandler_ = null;

  /**
   * A user-supplied function called whenever an update is required and the
   * map has been resized since the last update. Null or undefined if a
   * callback is not provided.
   * @type {?function}
   * @private
   */
  this.resizeHandler_ = null;

  /**
   * The LatLng coordinate of the top left of the current view of the map. Will
   * be null when this.isAdded_ is false.
   * @type {google.maps.LatLng}
   * @private
   */
  this.topLeft_ = null;

  /**
   * The map-pan event listener. Will be null when this.isAdded_ is false. Will
   * be null when this.isAdded_ is false.
   * @type {?function}
   * @private
   */
  this.centerListener_ = null;

  /**
   * The map-resize event listener. Will be null when this.isAdded_ is false.
   * @type {?function}
   * @private
   */
  this.resizeListener_ = null;

  /**
   * If true, the map size has changed and this.resizeHandler_ must be called
   * on the next update.
   * @type {boolean}
   * @private
   */
  this.needsResize_ = true;

  /**
   * A browser-defined id for the currently requested callback. Null when no
   * callback is queued.
   * @type {?number}
   * @private
   */
  this.requestAnimationFrameId_ = null;

  var canvas = document.createElement('canvas');
  canvas.style.position = 'absolute';
  canvas.style.top = 0;
  canvas.style.left = 0;
  canvas.style.pointerEvents = 'none';

  /**
   * The canvas element.
   * @type {!HTMLCanvasElement}
   */
  this.canvas = canvas;

  /**
   * Simple bind for functions with no args for bind-less browsers (Safari).
   * @param {Object} thisArg The this value used for the target function.
   * @param {function} func The function to be bound.
   */
  function simpleBindShim(thisArg, func) {
    return function() { func.apply(thisArg); };
  }

  /**
   * A reference to this.repositionCanvas_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.repositionFunction_ = simpleBindShim(this, this.repositionCanvas_);

  /**
   * A reference to this.resize_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.resizeFunction_ = simpleBindShim(this, this.resize_);

  /**
   * A reference to this.update_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.requestUpdateFunction_ = simpleBindShim(this, this.update_);

  // set provided options, if any
  if (opt_options) {
    this.setOptions(opt_options);
  }
}

CanvasLayer.prototype = new google.maps.OverlayView();

/**
 * The default MapPane to contain the canvas.
 * @type {string}
 * @const
 * @private
 */
CanvasLayer.DEFAULT_PANE_NAME_ = 'overlayLayer';

/**
 * Transform CSS property name, with vendor prefix if required. If browser
 * does not support transforms, property will be ignored.
 * @type {string}
 * @const
 * @private
 */
CanvasLayer.CSS_TRANSFORM_ = (function() {
  var div = document.createElement('div');
  var transformProps = [
    'transform',
    'WebkitTransform',
    'MozTransform',
    'OTransform',
    'msTransform'
  ];
  for (var i = 0; i < transformProps.length; i++) {
    var prop = transformProps[i];
    if (div.style[prop] !== undefined) {
      return prop;
    }
  }

  // return unprefixed version by default
  return transformProps[0];
})();

/**
 * The requestAnimationFrame function, with vendor-prefixed or setTimeout-based
 * fallbacks. MUST be called with window as thisArg.
 * @type {function}
 * @param {function} callback The function to add to the frame request queue.
 * @return {number} The browser-defined id for the requested callback.
 * @private
 */
CanvasLayer.prototype.requestAnimFrame_ =
    window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.oRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function(callback) {
      return window.setTimeout(callback, 1000 / 60);
    };

/**
 * The cancelAnimationFrame function, with vendor-prefixed fallback. Does not
 * fall back to clearTimeout as some platforms implement requestAnimationFrame
 * but not cancelAnimationFrame, and the cost is an extra frame on onRemove.
 * MUST be called with window as thisArg.
 * @type {function}
 * @param {number=} requestId The id of the frame request to cancel.
 * @private
 */
CanvasLayer.prototype.cancelAnimFrame_ =
    window.cancelAnimationFrame ||
    window.webkitCancelAnimationFrame ||
    window.mozCancelAnimationFrame ||
    window.oCancelAnimationFrame ||
    window.msCancelAnimationFrame ||
    function(requestId) {};

/**
 * Sets any options provided. See CanvasLayerOptions for more information.
 * @param {CanvasLayerOptions} options The options to set.
 */
CanvasLayer.prototype.setOptions = function(options) {
  if (options.animate !== undefined) {
    this.setAnimate(options.animate);
  }

  if (options.paneName !== undefined) {
    this.setPane(options.paneName);
  }

  if (options.updateHandler !== undefined) {
    this.setUpdateHandler(options.updateHandler);
  }

  if (options.resizeHandler !== undefined) {
    this.setResizeHandler(options.resizeHandler);
  }

  if(options.readyHandler) {
    this.readyHandler = options.readyHandler;
  }

};

/**
 * Set the animated state of the layer. If true, updateHandler will be called
 * repeatedly, once per frame. If false, updateHandler will only be called when
 * a map property changes that could require the canvas content to be redrawn.
 * @param {boolean} animate Whether the canvas is animated.
 */
CanvasLayer.prototype.setAnimate = function(animate) {
  this.isAnimated_ = !!animate;

  if (this.isAnimated_) {
    this.scheduleUpdate();
  }
};

/**
 * @return {boolean} Whether the canvas is animated.
 */
CanvasLayer.prototype.isAnimated = function() {
  return this.isAnimated_;
};

/**
 * Set the MapPane in which this layer will be displayed, by name. See
 * {@code google.maps.MapPanes} for the panes available.
 * @param {string} paneName The name of the desired MapPane.
 */
CanvasLayer.prototype.setPaneName = function(paneName) {
  this.paneName_ = paneName;

  this.setPane_();
};

/**
 * Set the opacity for the canvas.
 * 
 * @param {number} opacity The opacity of the canvas
 */
CanvasLayer.prototype.setOpacity = function (opacity) {
  this.canvas.style.opacity = opacity;
};

/**
 * Get the canvases opacity.
 * 
 * @return {number} The opacity of the canvas
 */
CanvasLayer.prototype.getOpacity = function () {
  return this.canvas.style.opacity;
};

/**
 * @return {string} The name of the current container pane.
 */
CanvasLayer.prototype.getPaneName = function() {
  return this.paneName_;
};

/**
 * Adds the canvas to the specified container pane. Since this is guaranteed to
 * execute only after onAdd is called, this is when paneName's existence is
 * checked (and an error is thrown if it doesn't exist).
 * @private
 */
CanvasLayer.prototype.setPane_ = function() {
  if (!this.isAdded_) {
    return;
  }

  // onAdd has been called, so panes can be used
  var panes = this.getPanes();
  if (!panes[this.paneName_]) {
    throw new Error('"' + this.paneName_ + '" is not a valid MapPane name.');
  }

  panes[this.paneName_].appendChild(this.canvas);
};

/**
 * Set a function that will be called whenever the parent map and the overlay's
 * canvas have been resized. If opt_resizeHandler is null or unspecified, any
 * existing callback is removed.
 * @param {?function=} opt_resizeHandler The resize callback function.
 */
CanvasLayer.prototype.setResizeHandler = function(opt_resizeHandler) {
  this.resizeHandler_ = opt_resizeHandler;
};

/**
 * Set a function that will be called when a repaint of the canvas is required.
 * If opt_updateHandler is null or unspecified, any existing callback is
 * removed.
 * @param {?function=} opt_updateHandler The update callback function.
 */
CanvasLayer.prototype.setUpdateHandler = function(opt_updateHandler) {
  this.updateHandler_ = opt_updateHandler;
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.onAdd = function() {
  if (this.isAdded_) {
    return;
  }

  this.isAdded_ = true;
  this.setPane_();

  this.resizeListener_ = google.maps.event.addListener(this.getMap(),
      'resize', this.resizeFunction_);
  this.centerListener_ = google.maps.event.addListener(this.getMap(),
      'center_changed', this.repositionFunction_);

  this.resize_();
  this.repositionCanvas_();
  this.readyHandler && this.readyHandler();
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.onRemove = function() {
  if (!this.isAdded_) {
    return;
  }

  this.isAdded_ = false;
  this.topLeft_ = null;

  // remove canvas and listeners for pan and resize from map
  this.canvas.parentElement.removeChild(this.canvas);
  if (this.centerListener_) {
    google.maps.event.removeListener(this.centerListener_);
    this.centerListener_ = null;
  }
  if (this.resizeListener_) {
    google.maps.event.removeListener(this.resizeListener_);
    this.resizeListener_ = null;
  }

  // cease canvas update callbacks
  if (this.requestAnimationFrameId_) {
    this.cancelAnimFrame_.call(window, this.requestAnimationFrameId_);
    this.requestAnimationFrameId_ = null;
  }
};

/**
 * The internal callback for resize events that resizes the canvas to keep the
 * map properly covered.
 * @private
 */
CanvasLayer.prototype.resize_ = function() {
  // TODO(bckenny): it's common to use a smaller canvas but use CSS to scale
  // what is drawn by the browser to save on fill rate. Add an option to do
  // this.

  if (!this.isAdded_) {
    return;
  }

  var map = this.getMap();
  var width = map.getDiv().offsetWidth;
  var height = map.getDiv().offsetHeight;
  var oldWidth = this.canvas.width;
  var oldHeight = this.canvas.height;

  // resizing may allocate a new back buffer, so do so conservatively
  if (oldWidth !== width || oldHeight !== height) {
    this.canvas.width = width;
    this.canvas.height = height;
    this.canvas.style.width = width + 'px';
    this.canvas.style.height = height + 'px';

    this.needsResize_ = true;
    this.scheduleUpdate();
  }
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.draw = function() {
  this.repositionCanvas_();
};

/**
 * Internal callback for map view changes. Since the Maps API moves the overlay
 * along with the map, this function calculates the opposite translation to
 * keep the canvas in place.
 * @private
 */
CanvasLayer.prototype.repositionCanvas_ = function() {
  // TODO(bckenny): *should* only be executed on RAF, but in current browsers
  //     this causes noticeable hitches in map and overlay relative
  //     positioning.

  var bounds = this.getMap().getBounds();
  this.topLeft_ = new google.maps.LatLng(bounds.getNorthEast().lat(),
      bounds.getSouthWest().lng());

  // canvas position relative to draggable map's conatainer depends on
  // overlayView's projection, not the map's
  var projection = this.getProjection();
  var divTopLeft = projection.fromLatLngToDivPixel(this.topLeft_);

  // when the zoom level is low, more than one map can be shown in the screen
  // so the canvas should be attach to the map with more are in the screen
  var mapSize = (1 << this.getMap().getZoom())*256;
  if (Math.abs(divTopLeft.x) > mapSize) {
    divTopLeft.x -= mapSize;
  }
  this.canvas.style[CanvasLayer.CSS_TRANSFORM_] = 'translate(' +
      Math.round(divTopLeft.x) + 'px,' + Math.round(divTopLeft.y) + 'px)';

  this.scheduleUpdate();
};

/**
 * Internal callback that serves as main animation scheduler via
 * requestAnimationFrame. Calls resize and update callbacks if set, and
 * schedules the next frame if overlay is animated.
 * @private
 */
CanvasLayer.prototype.update_ = function() {
  this.requestAnimationFrameId_ = null;

  if (!this.isAdded_) {
    return;
  }

  if (this.isAnimated_) {
    this.scheduleUpdate();
  }

  if (this.needsResize_ && this.resizeHandler_) {
    this.needsResize_ = false;
    this.resizeHandler_();
  }

  if (this.updateHandler_) {
    this.updateHandler_();
  }
};

/**
 * A convenience method to get the current LatLng coordinate of the top left of
 * the current view of the map.
 * @return {google.maps.LatLng} The top left coordinate.
 */
CanvasLayer.prototype.getTopLeft = function() {
  return this.topLeft_;
};

/**
 * Schedule a requestAnimationFrame callback to updateHandler. If one is
 * already scheduled, there is no effect.
 */
CanvasLayer.prototype.scheduleUpdate = function() {
  if (this.isAdded_ && !this.requestAnimationFrameId_) {
    this.requestAnimationFrameId_ =
        this.requestAnimFrame_.call(window, this.requestUpdateFunction_);
  }
};

module.exports = CanvasLayer;

},{}],7:[function(require,module,exports){
/*
 ====================
 canvas setup for drawing tiles
 ====================
 */

function CanvasTileLayer(canvas_setup, render) {
  this.tileSize = new google.maps.Size(256, 256);
  this.maxZoom = 19;
  this.name = "Tile #s";
  this.alt = "Canvas tile layer";
  this.tiles = {};
  this.canvas_setup = canvas_setup;
  this.render = render;
  if (!render) {
      this.render = canvas_setup;
  }
}


// create a tile with a canvas element
CanvasTileLayer.prototype.create_tile_canvas = function (coord, zoom, ownerDocument) {

  // create canvas and reset style
  var canvas = ownerDocument.createElement('canvas');
  var hit_canvas = ownerDocument.createElement('canvas');
  canvas.style.border = hit_canvas.style.border = "none";
  canvas.style.margin = hit_canvas.style.margin = "0";
  canvas.style.padding = hit_canvas.style.padding = "0";

  // prepare canvas and context sizes
  var ctx = canvas.getContext('2d');
  ctx.width = canvas.width = this.tileSize.width;
  ctx.height = canvas.height = this.tileSize.height;

  var hit_ctx = hit_canvas.getContext('2d');
  hit_canvas.width = hit_ctx.width = this.tileSize.width;
  hit_canvas.height = hit_ctx.height = this.tileSize.height;

  //set unique id
  var tile_id = coord.x + '_' + coord.y + '_' + zoom;

  canvas.setAttribute('id', tile_id);
  hit_canvas.setAttribute('id', tile_id);

  if (tile_id in this.tiles)
      delete this.tiles[tile_id];

  this.tiles[tile_id] = {canvas:canvas, ctx:ctx, hit_canvas:hit_canvas, hit_ctx:hit_ctx, coord:coord, zoom:zoom, primitives:null};

  // custom setup
  //if (tile_id == '19295_24654_16'){
  if (this.canvas_setup)
      this.canvas_setup(this.tiles[tile_id], coord, zoom);
  //}
  return canvas;

}


CanvasTileLayer.prototype.each = function (callback) {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      callback(tile);
  }
}

CanvasTileLayer.prototype.recreate = function () {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      this.canvas_setup(tile, tile.coord, tile.zoom);
  }
};

CanvasTileLayer.prototype.redraw_tile = function (tile) {
  this.render(tile, tile.coord, tile.zoom);
};

CanvasTileLayer.prototype.redraw = function () {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      this.render(tile, tile.coord, tile.zoom);
  }
};

// could be called directly...
CanvasTileLayer.prototype.getTile = function (coord, zoom, ownerDocument) {
  return this.create_tile_canvas(coord, zoom, ownerDocument);
};

CanvasTileLayer.prototype.releaseTile = function (tile) {
  var id = tile.getAttribute('id');
  delete this.tiles[id];
};

module.exports = CanvasTileLayer;

},{}],8:[function(require,module,exports){
function GMapsTileLoader() {
}


GMapsTileLoader.prototype = {

  _initTileLoader: function(map, projection) {
    this._map = map;
    this._projection = projection;
    this._tiles = {};
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._updateTiles = this._updateTiles.bind(this);
    this._listeners = [];
    this._listeners.push(
      google.maps.event.addListener(this._map, 'dragend', this._updateTiles),
      google.maps.event.addListener(this._map, 'zoom_changed', this._updateTiles)
    );
    this.tileSize = 256;
    this._updateTiles();
  },

  _removeTileLoader: function() {
    this._listeners.forEach(function (listener) {
      google.maps.event.removeListener(listener);
    });
    
    this._removeTiles();
  },

  _removeTiles: function () {
    for (var key in this._tiles) {
      this._removeTile(key);
    }
  },

  _reloadTiles: function() {
    this._removeTiles();
    this._updateTiles();
  },

  _updateTiles: function () {

      if (!this._map) { return; }

      var bounds = this._map.getBounds();
      var zoom = this._map.getZoom();
      var tileSize = this.tileSize;
      var mzoom = (1 << zoom);

      var topLeft = new google.maps.LatLng(
        bounds.getNorthEast().lat(),
        bounds.getSouthWest().lng()
      );

      var bottomRigth = new google.maps.LatLng(
        bounds.getSouthWest().lat(),
        bounds.getNorthEast().lng()
      );


      this._projection = this._map.getProjection();
      var divTopLeft = this._projection.fromLatLngToPoint(topLeft);
      var divBottomRight = this._projection.fromLatLngToPoint(bottomRigth);


      var nwTilePoint = new google.maps.Point(
              Math.floor(divTopLeft.x*mzoom / tileSize),
              Math.floor(divTopLeft.y*mzoom / tileSize)),
          seTilePoint = new google.maps.Point(
              Math.floor(divBottomRight.x*mzoom / tileSize),
              Math.floor(divBottomRight.y*mzoom / tileSize));


      this._addTilesFromCenterOut(nwTilePoint, seTilePoint);
      this._removeOtherTiles(nwTilePoint, seTilePoint);
  },

  _removeOtherTiles: function (nwTilePoint, seTilePoint) {
      var kArr, x, y, key;

      var zoom = this._map.getZoom();
      for (key in this._tiles) {
          if (this._tiles.hasOwnProperty(key)) {
              kArr = key.split(':');
              x = parseInt(kArr[0], 10);
              y = parseInt(kArr[1], 10);
              z = parseInt(kArr[2], 10);

              // remove tile if it's out of bounds
              if (z !== zoom || x < nwTilePoint.x || x > seTilePoint.x || y < nwTilePoint.y || y > seTilePoint.y) {
                  this._removeTile(key);
              }
          }
      }
  },

  _removeTile: function (key) {
      this.onTileRemoved && this.onTileRemoved(this._tiles[key]); 
      delete this._tiles[key];
      delete this._tilesLoading[key];
  },

  _tileKey: function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
  },

  _tileShouldBeLoaded: function (tilePoint) {
      var k = this._tileKey(tilePoint);
      return !(k in this._tiles) && !(k in this._tilesLoading);
  },

  _tileLoaded: function(tilePoint, tileData) {
    this._tilesToLoad--;
    var k = tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom
    this._tiles[k] = tileData;
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
      this.onTilesLoaded && this.onTilesLoaded();
    }
  },

  getTilePos: function (tilePoint) {
    var limit = (1 << this._map.getZoom());
    // wrap tile
    tilePoint = {
      x: ((tilePoint.x % limit) + limit) % limit,
      y: tilePoint.y
    };

    tilePoint = new google.maps.Point(
      tilePoint.x * this.tileSize, 
      tilePoint.y * this.tileSize
    );

    var bounds = this._map.getBounds();
    var topLeft = new google.maps.LatLng(
      bounds.getNorthEast().lat(),
      bounds.getSouthWest().lng()
    );

    var divTopLeft = this._map.getProjection().fromLatLngToPoint(topLeft);
    zoom = (1 << this._map.getZoom());
    divTopLeft.x = divTopLeft.x * zoom;
    divTopLeft.y = divTopLeft.y * zoom;

    return new google.maps.Point(
      tilePoint.x - divTopLeft.x,
      tilePoint.y - divTopLeft.y
    );
  },

  _addTilesFromCenterOut: function (nwTilePoint, seTilePoint) {
      var queue = [],
          center = new google.maps.Point(
            (nwTilePoint.x + seTilePoint.x) * 0.5,
            (nwTilePoint.y + seTilePoint.y) * 0.5
          ),
          zoom = this._map.getZoom();

      var j, i, point;

      for (j = nwTilePoint.y; j <= seTilePoint.y; j++) {
          for (i = nwTilePoint.x; i <= seTilePoint.x; i++) {
              point = new google.maps.Point (i, j);
              point.zoom = zoom;

              if (this._tileShouldBeLoaded(point)) {
                  queue.push(point);
              }
          }
      }

      var tilesToLoad = queue.length;

      if (tilesToLoad === 0) { return; }

      function distanceToCenterSq(point) {
        var dx = point.x - center.x;
        var dy = point.y - center.y;
        return dx * dx + dy * dy;
      }

      // load tiles in order of their distance to center
      queue.sort(function (a, b) {
          return distanceToCenterSq(a) - distanceToCenterSq(b);
      });

      this._tilesToLoad += tilesToLoad;

        for (i = 0; i < tilesToLoad; i++) {
          var t = queue[i];
          var k = this._tileKey(t);
          this._tilesLoading[k] = t;
          // events
          if (this.onTileAdded) {
            this.onTileAdded(t);
          }
        }

      this.onTilesLoading && this.onTilesLoading();
  }

}

module.exports = GMapsTileLoader;

},{}],9:[function(require,module,exports){
var gmaps = {};
if (typeof google !== 'undefined' && typeof google.maps !== 'undefined') {
    gmaps = require('./torque');
    gmaps.GMapsTileLoader = require('./gmaps_tileloader_mixin');
}
module.exports = gmaps;

},{"./gmaps_tileloader_mixin":8,"./torque":10}],10:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');
var CanvasLayer = require('./CanvasLayer');
var CanvasTileLayer = require('./canvas_tile_layer');
var GMapsTileLoader = require('./gmaps_tileloader_mixin');

function GMapsTorqueLayer(options) {
  var self = this;
  if (!torque.isBrowserSupported()) {
    throw new Error("browser is not supported by torque");
  }
  this.keys = [0];
  Object.defineProperty(this, 'key', {
    get: function() {
      return this.getKey();
    }
  });
  this.shader = null;
  this.ready = false;
  this.options = torque.extend({}, options);
  this.options = torque.extend({
    provider: 'windshaft',
    renderer: 'point',
    resolution: 2,
    steps: 100,
    visible: true
  }, this.options);
  if (options.cartocss) {
    torque.extend(this.options,
        torque.common.TorqueLayer.optionsFromCartoCSS(options.cartocss));
  }

  if(options.tileJSON) this.options.provider = "tileJSON";

  this.hidden = !this.options.visible;

  this.animator = new torque.Animator(function(time) {
    var k = time | 0;
    if(self.getKey() !== k) {
      self.setKey(k);
    }
  }, torque.extend(torque.clone(this.options), {
    onPause: function() {
      self.fire('pause');
    },
    onStop: function() {
      self.fire('stop');
    },
    onStart: function() {
      self.fire('play');
    },
    onStepsRange: function() {
      self.fire('change:stepsRange', self.animator.stepsRange());
    }
  }));

  this.play = this.animator.start.bind(this.animator);
  this.stop = this.animator.stop.bind(this.animator);
  this.pause = this.animator.pause.bind(this.animator);
  this.toggle = this.animator.toggle.bind(this.animator);
  this.setDuration = this.animator.duration.bind(this.animator);
  this.isRunning = this.animator.isRunning.bind(this.animator);


  CanvasLayer.call(this, {
    animate: false,
    updateHandler: this.render,
    readyHandler: this.initialize
  });

}

/**
 * torque layer
 */
GMapsTorqueLayer.prototype = torque.extend({},
  CanvasLayer.prototype,
  GMapsTileLoader.prototype,
  torque.Event,
  {

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray,
    'windshaft': torque.providers.windshaft,
    'tileJSON': torque.providers.tileJSON
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function() {
    var self = this;

    this.onTileAdded = this.onTileAdded.bind(this);

    this.options.ready = function() {
      self.fire("change:bounds", {
        bounds: self.provider.getBounds()
      });
      self.animator.steps(self.provider.getSteps());
      self.animator.rescale();
      self.fire('change:steps', {
        steps: self.provider.getSteps()
      });
      self.setKeys(self.getKeys());
    };

    this.provider = new this.providers[this.options.provider](this.options);
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), this.options);
    this.renderer.options.errorCallback = this.options.errorCallback;

    // this listener should be before tile loader
    this._cacheListener = google.maps.event.addListener(this.map, 'zoom_changed', function() {
      self.renderer && self.renderer.clearSpriteCache();
    });

    this._initTileLoader(this.map, this.getProjection());

    if (this.shader) {
      this.renderer.setShader(this.shader);
    }

  },

  hide: function() {
    if(this.hidden) return this;
    this.pause();
    this.clear();
    this.hidden = true;
    return this;
  },

  show: function() {
    if(!this.hidden) return this;
    this.hidden = false;
    this.play();
    if (this.options.steps === 1){
      this.redraw();
    }
    return this;
  },

  setSQL: function(sql) {
    if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
    if (!this.provider || !this.provider.setSQL) {
      throw new Error("this provider does not support SQL");
    }
    this.provider.setSQL(sql);
    this._reloadTiles();
    return this;
  },

  setBlendMode: function(_) {
    this.renderer && this.renderer.setBlendMode(_);
    this.redraw();
  },

  setSteps: function(steps) {
    this.provider && this.provider.setSteps(steps);
    this.animator && this.animator.steps(steps);
    this._reloadTiles();
  },

  setColumn: function(column, isTime) {
    this.provider && this.provider.setColumn(column, isTime);
    this._reloadTiles();
  },

  getTimeBounds: function() {
    return this.provider && this.provider.getKeySpan();
  },

  getCanvas: function() {
    return this.canvas;
  },

    // for each tile shown on the map request the data
  onTileAdded: function(t) {
    var self = this;
    var callback = function (tileData, error) {
      // don't load tiles that are not being shown
      if (t.zoom !== self.map.getZoom()) return;

      self._tileLoaded(t, tileData);

      if (tileData) {
        self.redraw();
      }

      self.fire('tileLoaded');

      if (error) {
        self.fire('tileError', error);
      }
    }

    this.provider.getTileData(t, t.zoom, callback);
  },

  clear: function() {
    var canvas = this.canvas;
    canvas.width = canvas.width;
  },

  /**
   * render the selectef key
   * don't call this function directly, it's called by
   * requestAnimationFrame. Use redraw to refresh it
   */
  render: function() {
    if(this.hidden) return;
    var t, tile, pos;
    var canvas = this.canvas;
    this.renderer.clearCanvas();
    var ctx = canvas.getContext('2d');

    // renders only a "frame"
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        pos = this.getTilePos(tile.coord);
        ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);
        this.renderer.renderTile(tile, this.keys);
      }
    }
    this.renderer.applyFilters();
  },

  getActivePointsBBox: function(step) {
    var positions = [];
    var tileMax = this.options.resolution * (256/this.options.resolution - 1);
    for(var t in this._tiles) {
      var tile = this._tiles[t];
      positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
    }
    return positions;
  },

  /**
   * set key to be shown. If it's a single value
   * it renders directly, if it's an array it renders
   * accumulated
   */
  setKey: function(key) {
    this.setKeys([key]);
  },

  /**
   * returns the array of keys being rendered
   */
  getKeys: function() {
    return this.keys;
  },

  setKeys: function(keys) {
    this.keys = keys;
    this.animator.step(this.getKey());
    this.redraw();
    this.fire('change:time', { time: this.getTime(), step: this.getKey() });
  },

  getKey: function() {
    return this.keys[0];
  },

  /**
   * helper function, does the same than ``setKey`` but only
   * accepts scalars.
   */
  setStep: function(time) {
    if(time === undefined || time.length !== undefined) {
      throw new Error("setTime only accept scalars");
    }
    this.setKey(time);
  },

  renderRange: function(start, end) {
    this.pause();
    var keys = [];
    for (var i = start; i <= end; i++) {
      keys.push(i);
    }
    this.setKeys(keys);
  },

  resetRenderRange: function() {
    this.stop();
    this.play();
  },

  /**
   * transform from animation step to Date object
   * that contains the animation time
   *
   * ``step`` should be between 0 and ``steps - 1``
   */
  stepToTime: function(step) {
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
    return new Date(time);
  },

  timeToStep: function(timestamp) {
    if (typeof timestamp === "Date") timestamp = timestamp.getTime();
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
    return step;
  },

  getStep: function() {
    return this.getKey();
  },

  /**
   * returns the animation time defined by the data
   * in the defined column. Date object
   */
  getTime: function() {
    return this.stepToTime(this.getKey());
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');

    if (this.provider && this.provider.options.named_map) {
      console.log('Torque layer: CartoCSS style on named maps is read-only');
      return false;
    }

    var shader = new carto.RendererJS().render(cartocss);
    this.shader = shader;
    if (this.renderer) {
      this.renderer.setShader(shader);
    }

    // provider options
    var options = torque.common.TorqueLayer.optionsFromLayer(shader.findLayer({ name: 'Map' }));
    this.provider && this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
    if(this.provider && this.provider.setOptions(options)) {
      this._reloadTiles();
    }
    torque.extend(this.options, options);

    // animator options
    if (options.animationDuration) {
      this.animator.duration(options.animationDuration);
    }

    this.redraw();
    return this;
  },

  redraw: function() {
    this.scheduleUpdate();
  },

  onRemove: function() {
    this.fire('remove');
    CanvasLayer.prototype.onRemove.call(this);
    this.animator.stop();
    this._removeTileLoader();
    google.maps.event.removeListener(this._cacheListener);
  },

  /**
   * return an array with the values for all the pixels active for the step
   */
  getValues: function(step) {
    var values = [];
    step = step === undefined ? this.getKey(): step;
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      this.renderer.getValues(tile, step, values);
    }
    return values;
  },

  getValueForPos: function(x, y, step) {
    step = step === undefined ? this.getKey(): step;
    var t, tile, pos, value = null, xx, yy;
    for(t in this._tiles) {
      tile = this._tiles[t];
      pos = this.getTilePos(tile.coord);
      xx = x - pos.x;
      yy = y - pos.y;
      if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
        value = this.renderer.getValueFor(tile, step, xx, yy);
      }
      if (value !== null) {
        return value;
      }
    }
    return null;
  },

  /** return the number of points for a step */
  pointCount: function(step) {
    var t, tile;
    step = step === undefined ? this.key: step;
    var c = 0;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        c += tile.timeCount[step];
      }
    }
    return c;
  },

  getValueForBBox: function(x, y, w, h) {
    var xf = x + w, yf = y + h;
    var sum = 0;
    for(_y = y; y<yf; y+=this.options.resolution){
      for(_x = x; x<xf; x+=this.options.resolution){
        var thisValue = this.getValueForPos(_x,_y);
        if (thisValue){
          var bb = thisValue.bbox;
          var proj = this.getProjection()
          var xy = proj.fromLatLngToContainerPixel(new google.maps.LatLng(bb[1].lat, bb[1].lon));
          if(xy.x < xf && xy.y < yf){
            sum += thisValue.value;
          }
        }
      }
    }
    return sum;
  },

  error: function (callback) {
    this.options.errorCallback = callback;
    return this;
  }

});



function GMapsTiledTorqueLayer(options) {
  this.options = torque.extend({}, options);
  CanvasTileLayer.call(this, this._loadTile.bind(this), this.drawTile.bind(this));
  this.initialize(options);
}

GMapsTiledTorqueLayer.prototype = torque.extend({}, CanvasTileLayer.prototype, {

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function(options) {
    var self = this;
    this.keys = [0];

    this.options.renderer = this.options.renderer || 'pixel';
    this.options.provider = this.options.provider || 'sql_api';

    this.provider = new this.providers[this.options.provider](options);
    this.renderer = new this.renderers[this.options.renderer](null, options);

  },

  _tileLoaded: function(tile, tileData) {
    tile.data = tileData;
    this.drawTile(tile);
  },

  _loadTile: function(tile, coord, zoom) {
    var self = this;
    var limit = 1 << zoom;
    // wrap tile
    var wrappedCoord = {
      x: ((coord.x % limit) + limit) % limit,
      y: coord.y
    };

    this.provider.getTileData(wrappedCoord, zoom, function(tileData) {
      self._tileLoaded(tile, tileData);
    });
  },

  drawTile: function (tile) {
    var canvas = tile.canvas;
    if(!tile.data) return;
    canvas.width = canvas.width;

    this.renderer.setCanvas(canvas);

    var accum = this.renderer.accumulate(tile.data, this.getKey());
    this.renderer.renderTileAccum(accum, 0, 0);
  },

  setKey: function(key) {
    this.keys = [key];
    this.redraw();
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');
    return this.renderer.setCartoCSS(cartocss);
  },

  setStepsRange: function(start, end) {
    this.animator.stepsRange(start, end);
  },

  removeStepsRange: function() {
    this.animator.removeCustomStepsRange();
  },

  getStepsRange: function() {
    return this.animator.stepsRange();
  }

});

module.exports = {
    GMapsTiledTorqueLayer: GMapsTiledTorqueLayer,
    GMapsTorqueLayer: GMapsTorqueLayer
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./CanvasLayer":6,"./canvas_tile_layer":7,"./gmaps_tileloader_mixin":8,"carto":40}],11:[function(require,module,exports){
module.exports = require('./core');

module.exports.Animator = require('./animator');
module.exports.cartocss_reference = require('./cartocss_reference');
module.exports.common = require('./common');
module.exports.math = require('./math');
module.exports.Mercator = require('./mercator');
module.exports.net = require('./request');
module.exports.renderer = require('./renderer');
module.exports.providers = require('./provider');

require('./leaflet');

var gmaps = require('./gmaps');
module.exports.GMapsTileLoader = gmaps.GMapsTileLoader;
module.exports.GMapsTorqueLayer = gmaps.GMapsTorqueLayer;
module.exports.GMapsTiledTorqueLayer = gmaps.GMapsTiledTorqueLayer;

require('./ol');
},{"./animator":2,"./cartocss_reference":3,"./common":4,"./core":5,"./gmaps":9,"./leaflet":13,"./math":16,"./mercator":17,"./ol":19,"./provider":23,"./renderer":30,"./request":34}],12:[function(require,module,exports){
require('./leaflet_tileloader_mixin');

/**
 * full canvas layer implementation for Leaflet
 */

L.CanvasLayer = L.Layer.extend({

  includes: [L.Mixin.Events, L.Mixin.TileLoader],

  options: {
      minZoom: 0,
      maxZoom: 28,
      tileSize: 256,
      subdomains: 'abc',
      errorTileUrl: '',
      attribution: '',
      zoomOffset: 0,
      opacity: 1,
      unloadInvisibleTiles: L.Browser.mobile,
      updateWhenIdle: L.Browser.mobile,
      tileLoader: false, // installs tile loading events
      zoomAnimation: true
  },

  initialize: function (options) {
    var self = this;
    options = options || {};
    //this.project = this._project.bind(this);
    this.render = this.render.bind(this);
    L.Util.setOptions(this, options);
    this._canvas = this._createCanvas();
    // backCanvas for zoom animation
    if (this.options.zoomAnimation) {
      this._backCanvas = this._createCanvas();
    }
    this._ctx = this._canvas.getContext('2d');
    this.currentAnimationFrame = -1;
    this.requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
                                window.webkitRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) {
                                    return window.setTimeout(callback, 1000 / 60);
                                };
    this.cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame ||
                                window.webkitCancelAnimationFrame || window.msCancelAnimationFrame || function(id) { clearTimeout(id); };
  },

  _createCanvas: function() {
    var canvas;
    canvas = document.createElement('canvas');
    canvas.style.position = 'absolute';
    canvas.style.top = 0;
    canvas.style.left = 0;
    canvas.style.pointerEvents = "none";
    canvas.style.zIndex = this.options.zIndex || 0;
    var className = 'leaflet-tile-container';
    if (this.options.zoomAnimation) {
      className += ' leaflet-zoom-animated';
    }
    canvas.setAttribute('class', className);
    return canvas;
  },

  onAdd: function (map) {
    this._map = map;

    // add container with the canvas to the tile pane
    // the container is moved in the oposite direction of the
    // map pane to keep the canvas always in (0, 0)
    var tilePane = this._map._panes.tilePane;
    var _container = L.DomUtil.create('div', 'leaflet-layer');
    _container.appendChild(this._canvas);
    if (this.options.zoomAnimation) {
      _container.appendChild(this._backCanvas);
      this._backCanvas.style.display = 'none';
    }
    tilePane.appendChild(_container);

    this._container = _container;

    // hack: listen to predrag event launched by dragging to
    // set container in position (0, 0) in screen coordinates
    map.dragging._draggable.on('predrag', function() {
      var d = map.dragging._draggable;
      L.DomUtil.setPosition(this._canvas, { x: -d._newPos.x, y: -d._newPos.y });
    }, this);

    map.on({ 'viewreset': this._reset }, this);
    map.on('move', this.redraw, this);
    map.on('resize', this._reset, this);

    if (this.options.zoomAnimation) {
      map.on({
        'zoomanim': this._animateZoom,
        'zoomend': this._endZoomAnim,
        'moveend': this._reset
      }, this);
    }

    if(this.options.tileLoader) {
      this._initTileLoader();
    }

    this._reset();
  },

  _animateZoom: function (e) {
    if (!this._animating) {
        this._animating = true;
    }
    var back = this._backCanvas;

    back.width = this._canvas.width;
    back.height = this._canvas.height;

    // paint current canvas in back canvas with trasnformation
    var pos = this._canvas._leaflet_pos || { x: 0, y: 0 };
    back.getContext('2d').drawImage(this._canvas, 0, 0);

    L.DomUtil.setPosition(back, L.DomUtil.getPosition(this._canvas));

    // hide original
    this._canvas.style.display = 'none';
    back.style.display = 'block';
    var map = this._map;
    var scale = map.getZoomScale(e.zoom);
    var newCenter = map._latLngToNewLayerPoint(map.getCenter(), e.zoom, e.center);
    var oldCenter = map._latLngToNewLayerPoint(e.center, e.zoom, e.center);

    var origin = {
      x:  newCenter.x - oldCenter.x + pos.x,
      y:  newCenter.y - oldCenter.y + pos.y
    };

    var bg = back;
    var transform = L.DomUtil.TRANSFORM;
    setTimeout(function() {
      bg.style[transform] = 'translate(' + origin.x + 'px, ' + origin.y + 'px) scale(' + e.scale + ') ';
    }, 0)
  },

  _endZoomAnim: function () {
    this._animating = false;
    this._canvas.style.display = 'block';
    this._backCanvas.style.display = 'none';
    this._backCanvas.style[L.DomUtil.TRANSFORM] = '';
  },

  getCanvas: function() {
    return this._canvas;
  },

  getAttribution: function() {
    return this.options.attribution;
  },

  draw: function() {
    return this._reset();
  },

  onRemove: function (map) {
    this._container.parentNode.removeChild(this._container);
    map.off({
      'viewreset': this._reset,
      'move': this.redraw,
      'moveend': this._reset,
      'resize': this._reset,
      'zoomanim': this._animateZoom,
      'zoomend': this._endZoomAnim
    }, this);
  },

  addTo: function (map) {
    map.addLayer(this);
    return this;
  },

  error: function (callback) {
    this.provider.options.errorCallback = callback;
    return this;
  },

  setOpacity: function (opacity) {
    this.options.opacity = opacity;
    this._updateOpacity();
    return this;
  },

  setZIndex: function(zIndex) {
    zIndex = zIndex !== void 0 ? zIndex : 1;
    this._container.style.zIndex = zIndex;
    this._canvas.style.zIndex = zIndex;
    if (this.options.zoomAnimation) {
      this._backCanvas.style.zIndex = zIndex;
    }
  },

  bringToFront: function () {
    return this;
  },

  bringToBack: function () {
    return this;
  },

  _reset: function () {
    var size = this._map.getSize();
    this._canvas.width = size.x;
    this._canvas.height = size.y;

    // fix position
    var pos = L.DomUtil.getPosition(this._map.getPanes().mapPane);
    if (pos) {
      L.DomUtil.setPosition(this._canvas, { x: -pos.x, y: -pos.y });
    }
    this.onResize();
    this._render();
  },

  /*
  _project: function(x) {
    var point = this._map.latLngToLayerPoint(new L.LatLng(x[1], x[0]));
    return [point.x, point.y];
  },
  */

  _updateOpacity: function () { },

  _render: function() {
    if (this.currentAnimationFrame >= 0) {
      this.cancelAnimationFrame.call(window, this.currentAnimationFrame);
    }
    this.currentAnimationFrame = this.requestAnimationFrame.call(window, this.render);
  },

  // use direct: true if you are inside an animation frame call
  redraw: function(direct) {
    var domPosition = L.DomUtil.getPosition(this._map.getPanes().mapPane);
    if (domPosition) {
      L.DomUtil.setPosition(this._canvas, { x: -domPosition.x, y: -domPosition.y });
    }
    if (direct) {
      this.render();
    } else {
      this._render();
    }
  },

  onResize: function() {
  },

  render: function() {
    throw new Error('render function should be implemented');
  }

});

},{"./leaflet_tileloader_mixin":14}],13:[function(require,module,exports){
if (typeof L !== 'undefined') {
    require('./torque');
}

},{"./torque":15}],14:[function(require,module,exports){
L.Mixin.TileLoader = {

  _initTileLoader: function() {
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._map.on({
        'moveend': this._updateTiles
    }, this);
    this._updateTiles();
  },

  _removeTileLoader: function() {
    this._map.off({
        'moveend': this._updateTiles
    }, this);
    this._removeTiles();
  },

  _updateTiles: function () {

      if (!this._map) { return; }

      var bounds = this._map.getPixelBounds(),
          zoom = this._map.getZoom(),
          tileSize = this.options.tileSize;

      if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
          return;
      }

      var nwTilePoint = new L.Point(
              Math.floor(bounds.min.x / tileSize),
              Math.floor(bounds.min.y / tileSize)),

          seTilePoint = new L.Point(
              Math.floor(bounds.max.x / tileSize),
              Math.floor(bounds.max.y / tileSize)),

          tileBounds = new L.Bounds(nwTilePoint, seTilePoint);

      this._addTilesFromCenterOut(tileBounds);
      this._removeOtherTiles(tileBounds);
  },

  _removeTiles: function (bounds) {
      for (var key in this._tiles) {
        this._removeTile(key);
      }
  },

  _reloadTiles: function() {
    this._removeTiles();
    this._updateTiles();
  },

  _removeOtherTiles: function (bounds) {
      var kArr, x, y, z, key;
      var zoom = this._map.getZoom();

      for (key in this._tiles) {
          if (this._tiles.hasOwnProperty(key)) {
              kArr = key.split(':');
              x = parseInt(kArr[0], 10);
              y = parseInt(kArr[1], 10);
              z = parseInt(kArr[2], 10);

              // remove tile if it's out of bounds
              if (zoom !== z || x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
                  this._removeTile(key);
              }
          }
      }
  },

  _removeTile: function (key) {
      this.fire('tileRemoved', this._tiles[key]);
      delete this._tiles[key];
      delete this._tilesLoading[key];
  },

  _tileKey: function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
  },

  _tileShouldBeLoaded: function (tilePoint) {
      var k = this._tileKey(tilePoint);
      return !(k in this._tiles) && !(k in this._tilesLoading);
  },

  _tileLoaded: function(tilePoint, tileData) {
    this._tilesToLoad--;
    var k = tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom
    this._tiles[k] = tileData;
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
      this.fire("tilesLoaded");
    }
  },

  getTilePos: function (tilePoint) {
    tilePoint = new L.Point(tilePoint.x, tilePoint.y);
    var origin = this._map._getTopLeftPoint(this._map.getCenter()),
        tileSize = this.options.tileSize;

    return tilePoint.multiplyBy(tileSize).subtract(origin);
  },

  _addTilesFromCenterOut: function (bounds) {
      var queue = [],
          center = bounds.getCenter(),
          zoom = this._map.getZoom();

      zoom = Math.round(zoom);

      var j, i, point;

      for (j = bounds.min.y; j <= bounds.max.y; j++) {
          for (i = bounds.min.x; i <= bounds.max.x; i++) {
              point = new L.Point(i, j);
              point.zoom =  zoom;

              if (this._tileShouldBeLoaded(point)) {
                  queue.push(point);
              }
          }
      }

      var tilesToLoad = queue.length;

      if (tilesToLoad === 0) { return; }

      // load tiles in order of their distance to center
      queue.sort(function (a, b) {
          return a.distanceTo(center) - b.distanceTo(center);
      });

      this._tilesToLoad += tilesToLoad;

      for (i = 0; i < tilesToLoad; i++) {
        var t = queue[i];
        var k = this._tileKey(t);
        this._tilesLoading[k] = t;
        this.fire('tileAdded', t);
      }
      this.fire("tilesLoading");

  }

}

},{}],15:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');

require('./canvas_layer');

/**
 * torque layer
 */
L.TorqueLayer = L.CanvasLayer.extend({

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray,
    'windshaft': torque.providers.windshaft,
    'tileJSON': torque.providers.tileJSON
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function(options) {
    var self = this;
    if (!torque.isBrowserSupported()) {
      throw new Error("browser is not supported by torque");
    }
    options.tileLoader = true;
    this.keys = [0];
    this._tiles = {};
    Object.defineProperty(this, 'key', {
      get: function() {
        return this.getKey();
      }
    });
    this.prevRenderedKey = 0;
    if (options.cartocss) {
      // We're only passing the Map header to the global options because the parser won't like turbocarto expressions
      var headerCartoCSS = options.cartocss.replace(/\n/g,'').match(/Map\s*?\{.*?}/g)[0];
      torque.extend(options, torque.common.TorqueLayer.optionsFromCartoCSS(headerCartoCSS));
    }

    options.resolution = options.resolution || 2;
    options.steps = options.steps || 100;
    options.visible = options.visible === undefined ? true: options.visible;
    this.hidden = !options.visible;

    this.animator = new torque.Animator(function(time) {
      var k = time | 0;
      if(self.getKey() !== k) {
        self.setKey(k, { direct: true });
      }
    }, torque.extend(torque.clone(options), {
      onPause: function() {
        self.fire('pause');
      },
      onStop: function() {
        self.fire('stop');
      },
      onStart: function() {
        self.fire('play');
      },
      onStepsRange: function() {
        self.fire('change:stepsRange', self.animator.stepsRange());
      }
    }));

    this.play = this.animator.start.bind(this.animator);
    this.stop = this.animator.stop.bind(this.animator);
    this.pause = this.animator.pause.bind(this.animator);
    this.toggle = this.animator.toggle.bind(this.animator);
    this.setDuration = this.animator.duration.bind(this.animator);
    this.isRunning = this.animator.isRunning.bind(this.animator);

    L.CanvasLayer.prototype.initialize.call(this, options);

    this.options.renderer = this.options.renderer || 'point';
    this.options.provider = this.options.provider || 'windshaft';

    if (this.options.tileJSON) this.options.provider = 'tileJSON';

    this.showLimitErrors = options.showLimitErrors;

    this.provider = new this.providers[this.options.provider](options);
    options.layer = this;
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), options);


    options.ready = function() {
      self.fire("change:bounds", {
        bounds: self.provider.getBounds()
      });
      self.animator.steps(self.provider.getSteps());
      self.animator.rescale();
      self.fire('change:steps', {
        steps: self.provider.getSteps()
      });
      self.setKeys(self.getKeys());
    };

    this.on('tileLoaded', function () {
      self.renderer.setCartoCSS(self.renderer.style);
    })

    this.renderer.on("allIconsLoaded", this.render.bind(this));

    // for each tile shown on the map request the data
    this.on('tileAdded', function(t) {
      var callback = function (tileData, error) {
        // don't load tiles that are not being shown
        if (t.zoom !== self._map.getZoom()) return;

        self._tileLoaded(t, tileData);
        self._clearTileCaches();

        if (tileData) {
          self.redraw();
        }

        self.fire('tileLoaded');

        if (error) {
          self.fire('tileError', error);
        }
      };

      var tileData = this.provider.getTileData(t, t.zoom, callback);
    }, this);
  },

  _clearTileCaches: function() {
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile && tile._tileCache) {
        tile._tileCache = null;
      }
    }
  },

  _clearCaches: function() {
    this.renderer && this.renderer.clearSpriteCache();
    this._clearTileCaches();
  },

  onAdd: function (map) {
    map.on({
      'zoomend': this._clearCaches,
      'zoomstart': this._pauseOnZoom
    }, this);

    map.on({
      'zoomend': this._resumeOnZoom
    }, this);
    L.CanvasLayer.prototype.onAdd.call(this, map);
  },

  onRemove: function(map) {
    this.fire('remove');
    this._removeTileLoader();
    map.off({
      'zoomend': this._clearCaches,
      'zoomstart': this._pauseOnZoom
    }, this);
    map.off({
      'zoomend': this._resumeOnZoom
    }, this);
    L.CanvasLayer.prototype.onRemove.call(this, map);
  },

  _pauseOnZoom: function() {
    this.wasRunning = this.isRunning();
    if (this.wasRunning) {
      this.pause();
    }
  },

  _resumeOnZoom: function() {
    if (this.wasRunning) {
      this.play();
    }
  },

  hide: function() {
    if(this.hidden) return this;
    this.pause();
    this.clear();
    this.hidden = true;
    return this;
  },

  show: function() {
    if(!this.hidden) return this;
    this.hidden = false;
    this.play();
    if (this.options.steps === 1){
      this.redraw();
    }
    return this;
  },

  setSQL: function(sql) {
    if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
    if (!this.provider || !this.provider.setSQL) {
      throw new Error("this provider does not support SQL");
    }
    this.provider.setSQL(sql);
    this._reloadTiles();
    return this;
  },

  setBlendMode: function(_) {
    this.renderer.setBlendMode(_);
    this.redraw();
  },

  setSteps: function(steps) {
    this.provider.setSteps(steps);
    this._reloadTiles();
  },

  setColumn: function(column, isTime) {
    this.provider.setColumn(column, isTime);
    this._reloadTiles();
  },

  getTimeBounds: function() {
    return this.provider && this.provider.getKeySpan();
  },

  clear: function() {
    var canvas = this.getCanvas();
    canvas.width = canvas.width;
  },

  /**
   * render the selectef key
   * don't call this function directly, it's called by
   * requestAnimationFrame. Use redraw to refresh it
   */
  render: function() {
    if(this.hidden) return;
    var t, tile, pos;
    var canvas = this.getCanvas();
    this.renderer.clearCanvas();
    var ctx = canvas.getContext('2d');

    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        // clear cache
        if (this.animator.isRunning()) {
          tile._tileCache = null;
        }

        pos = this.getTilePos(tile.coord);
        ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);

        if (tile._tileCache) {
          // when the tile has a cached image just render it and avoid to render
          // all the points
          this.renderer._ctx.drawImage(tile._tileCache, 0, 0);
        } else {
          this.renderer.renderTile(tile, this.keys);
        }
      }
    }
    this.renderer.applyFilters();

    // prepare caches if the animation is not running
    // don't cache if the key has just changed, this avoids to cache
    // when the user is dragging, it only cache when the map is still
    if (!this.animator.isRunning() && this.getKey() === this.prevRenderedKey) {
      var tile_size = this.renderer.TILE_SIZE;
      for(t in this._tiles) {
        tile = this._tiles[t];
        if (tile && !tile._tileCache) {
          var c = tile._tileCache = document.createElement('canvas');
          c.width = c.height = tile_size;
          pos = this.getTilePos(tile.coord);
          // clip bounds, firefox raise an exception when try to get data from outside canvas
          var x = Math.max(0, pos.x)
          var y = Math.max(0, pos.y)
          var w = Math.min(tile_size, this.getCanvas().width - x);
          var h = Math.min(tile_size, this.getCanvas().height - y);
          if (w > 0 && h > 0) {
            c.getContext('2d').drawImage(this.getCanvas(), x, y, w, h, x - pos.x, y - pos.y, w, h);
          }
        }
      }
    }

    this.prevRenderedKey = this.getKey();

  },

  /**
   * set key to be shown. If it's a single value
   * it renders directly, if it's an array it renders
   * accumulated
   */
  setKey: function(key, options) {
    this.setKeys([key], options);
  },

  /**
   * returns the array of keys being rendered
   */
  getKeys: function() {
    return this.keys;
  },

  setKeys: function(keys, options) {
    this.keys = keys;
    this.animator.step(this.getKey());
    this._clearTileCaches();
    this.redraw(options && options.direct);
    this.fire('change:time', {
        time: this.getTime(),
        step: this.getKey(),
        start: this.getKey(),
        end: this.getLastKey()
    });
  },

  getKey: function() {
    return this.keys[0];
  },

  getLastKey: function() {
    return this.keys[this.keys.length - 1];
  },

  /**
   * helper function, does the same than ``setKey`` but only
   * accepts scalars.
   */
  setStep: function(time) {
    if(time === undefined || time.length !== undefined) {
      throw new Error("setTime only accept scalars");
    }
    this.setKey(time);
  },

  renderRange: function(start, end) {
    this.pause();
    var keys = [];
    for (var i = start; i <= end; i++) {
      keys.push(i);
    }
    this.setKeys(keys);
  },

  resetRenderRange: function() {
    this.stop();
    this.play();
  },

  /**
   * transform from animation step to Date object
   * that contains the animation time
   *
   * ``step`` should be between 0 and ``steps - 1``
   */
  stepToTime: function(step) {
    var times = this.provider.getKeySpan();
    var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
    return new Date(time);
  },

  timeToStep: function(timestamp) {
    if (typeof timestamp === "Date") timestamp = timestamp.getTime();
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
    return step;
  },

  getStep: function() {
    return this.getKey();
  },

  /**
   * returns the animation time defined by the data
   * in the defined column. Date object
   */
  getTime: function() {
    return this.stepToTime(this.getKey());
  },

  /**
   * returns an object with the start and end times
   */
  getTimeSpan: function() {
    return this.provider.getKeySpan();
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');

    if (this.provider && this.provider.options.named_map) {
      console.log('Torque layer: CartoCSS style on named maps is read-only');
      return false;
    }

    this.renderer.setCartoCSS(cartocss, function () {
      // provider options
      var options = torque.common.TorqueLayer.optionsFromLayer(this.renderer._shader.findLayer({ name: 'Map' }));
      this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
      if(this.provider.setOptions(options)) {
        this._reloadTiles();
      }

      torque.extend(this.options, options);

      // animator options
      if (options.animationDuration) {
        this.animator.duration(options.animationDuration);
      }
      this._clearCaches();
      this.redraw();
      return this;
    }.bind(this));

  },

  /**
   * get active points for a step in active zoom
   * returns a list of bounding boxes [[] , [], []]
   * empty list if there is no active pixels
   */
  getActivePointsBBox: function(step) {
    var positions = [];
    for(var t in this._tiles) {
      var tile = this._tiles[t];
      positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
    }
    return positions;
  },

  /**
   * return an array with the values for all the pixels active for the step
   */
  getValues: function(step) {
    var values = [];
    step = step === undefined ? this.getKey(): step;
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      this.renderer.getValues(tile, step, values);
    }
    return values;
  },

  /**
   * return the value for position relative to map coordinates. null for no value
   */
  getValueForPos: function(x, y, step) {
    step = step === undefined ? this.getKey(): step;
    var t, tile, pos, value = null, xx, yy;
    for(t in this._tiles) {
      tile = this._tiles[t];
      pos = this.getTilePos(tile.coord);
      xx = x - pos.x;
      yy = y - pos.y;
      if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
        value = this.renderer.getValueFor(tile, step, xx, yy);
      }
      if (value !== null) {
        return value;
      }
    }
    return null;
  },

  getValueForBBox: function(x, y, w, h) {
    var xf = x + w, yf = y + h, _x=x;
    var sum = 0;
    for(_y = y; _y<yf; _y+=this.options.resolution){
      for(_x = x; _x<xf; _x+=this.options.resolution){
        var thisValue = this.getValueForPos(_x,_y);
        if (thisValue){
          var bb = thisValue.bbox;
          var xy = this._map.latLngToContainerPoint([bb[1].lat, bb[1].lon]);
          if(xy.x < xf && xy.y < yf){
            sum += thisValue.value;
          }
        }
      }
    }
    return sum;
  },

  /** return the number of points for a step */
  pointCount: function(step) {
    var t, tile;
    step = step === undefined ? this.key: step;
    var c = 0;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        c += tile.timeCount[step];
      }
    }
    return c;
  },

  invalidate: function() {
    this.provider.reload();
  },

  setStepsRange: function(start, end) {
    this.animator.stepsRange(start, end);
  },

  removeStepsRange: function() {
    this.animator.removeCustomStepsRange();
  },

  getStepsRange: function() {
    return this.animator.stepsRange();
  },

  onRemove: function(map) {
    L.CanvasLayer.prototype.onRemove.apply(this, arguments);
    this.animator.stop();
  }
});

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./canvas_layer":12,"carto":40}],16:[function(require,module,exports){
  function clamp(a, b) {
    return function(t) {
      return Math.max(Math.min(t, b), a);
    };
  }

  function invLinear(a, b) {
    var c = clamp(0, 1.0);
    return function(t) {
      return c((t - a)/(b - a));
    };
  }

  function linear(a, b) {
    var c = clamp(a, b);
    function _linear(t) {
      return c(a*(1.0 - t) + t*b);
    }

    _linear.invert = function() {
      return invLinear(a, b);
    };

    return _linear;
  }

module.exports = {
    clamp: clamp,
    linear: linear,
    invLinear: invLinear
};

},{}],17:[function(require,module,exports){
var Point = function(x, y) {
  this.x = x || 0;
  this.y = y || 0;
};

function clamp(value, optMin, optMax) {
  if (optMin !== null) value = Math.max(value, optMin);
  if (optMax !== null) value = Math.min(value, optMax);
  return value;
}

function degreesToRadians(deg) {
  return deg * (Math.PI / 180);
}

function radiansToDegrees(rad) {
  return rad / (Math.PI / 180);
}


var MercatorProjection = function() {
//  this._tileSize = L.Browser.retina ? 512 : 256;
  this._tileSize = 256;
  this._pixelOrigin = new Point(this._tileSize / 2, this._tileSize / 2);
  this._pixelsPerLonDegree = this._tileSize / 360;
  this._pixelsPerLonRadian = this._tileSize / (2 * Math.PI);
};

MercatorProjection.prototype._fromLatLonToPoint = function(lat, lon) {
  var point = new Point(0, 0);
  var origin = this._pixelOrigin;

  point.x = origin.x + lon * this._pixelsPerLonDegree;

  // NOTE(appleton): Truncating to 0.9999 effectively limits latitude to
  // 89.189.  This is about a third of a tile past the edge of the world
  // tile.
  var siny = clamp(Math.sin(degreesToRadians(lat)), -0.9999, 0.9999);
  point.y = origin.y + 0.5 * Math.log((1 + siny) / (1 - siny)) * -this._pixelsPerLonRadian;
  return point;
};

MercatorProjection.prototype._fromPointToLatLon = function(point) {
  var me = this;
  var origin = me._pixelOrigin;
  var lon = (point.x - origin.x) / me._pixelsPerLonDegree;
  var latRadians = (point.y - origin.y) / -me._pixelsPerLonRadian;
  var lat = radiansToDegrees(2 * Math.atan(Math.exp(latRadians)) - Math.PI / 2);
  return { lat:lat, lon:lon };
};

MercatorProjection.prototype._tilePixelPos = function(tileX, tileY) {
  return {
    x: tileX*this._tileSize,
    y: tileY*this._tileSize
  };
};

MercatorProjection.prototype.tilePixelBBox = function(x, y, zoom, px, py, res) {
  res = res || 1.0;
  var numTiles = 1 <<zoom;
  var inc = res/numTiles;
  px = (x*this._tileSize + px)/numTiles;
  py = (y*this._tileSize + py)/numTiles;
  return [
    this._fromPointToLatLon(new Point(px, py + inc)),
    this._fromPointToLatLon(new Point(px + inc, py))
  ];
};

MercatorProjection.prototype.tileBBox = function(x, y, zoom, bufferSize) {
  var numTiles = 1 <<zoom;
  bufferSize = bufferSize || 0;
  var inc =  (this._tileSize + bufferSize*2)/numTiles;
  var px = (x*this._tileSize - bufferSize  )/numTiles;
  var py = (y*this._tileSize - bufferSize  )/numTiles;
  return [
    this._fromPointToLatLon(new Point(px, py + inc)),
    this._fromPointToLatLon(new Point(px + inc, py))
  ];
};

MercatorProjection.prototype.latLonToTilePoint = function(lat, lon, tileX, tileY, zoom) {
  var numTiles = 1 <<zoom;
  var worldCoordinate = this._fromLatLonToPoint(lat, lon);
  var pixelCoordinate = new Point(worldCoordinate.x*numTiles, worldCoordinate.y*numTiles);
  var tilePixelPos    = this._tilePixelPos(tileX, tileY);
  return new Point(Math.round(pixelCoordinate.x-tilePixelPos.x), Math.round(pixelCoordinate.y-tilePixelPos.y));
};

module.exports = MercatorProjection;

},{}],18:[function(require,module,exports){
require('./ol_tileloader_mixin');

ol.CanvasLayer = function(options) {
    this.root_ = document.createElement('div');
    this.root_.setAttribute('class', 'ol-heatmap-layer');

    this.options = {
        subdomains: 'abc',
        errorTileUrl: '',
        attribution: '',
        opacity: 1,
        tileLoader: false, // installs tile loading events
        tileSize: 256
    };

    options = options || {};
    torque.extend(this.options, options);

    ol.TileLoader.call(this, this.options.tileSize, this.options.maxZoom);

    this.render = this.render.bind(this);
    this._canvas = this._createCanvas();

    this.root_.appendChild(this._canvas);

    this._ctx = this._canvas.getContext('2d');
    this.currentAnimationFrame = -1;
    this.requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
    window.webkitRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) {
        return window.setTimeout(callback, 1000 / 60);
    };
    this.cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame ||
    window.webkitCancelAnimationFrame || window.msCancelAnimationFrame || function (id) {
        clearTimeout(id);
    };

    if(options.map){
        this.setMap(options.map);
    }
};

ol.inherits(ol.CanvasLayer, ol.TileLoader);

ol.CanvasLayer.prototype.setMap = function(map){
    if(this._map){
        //remove
        this._map.unByKey(this.pointdragKey_);
        this._map.unByKey(this.sizeChangedKey_);
        this._map.unByKey(this.moveendKey_);
        this._map.getView().unByKey(this.centerChanged_);
    }
    this._map = map;

    if(map){
        var overlayContainer  = this._map.getViewport().getElementsByClassName("ol-overlaycontainer")[0];
        overlayContainer.appendChild(this.root_);

        this.pointdragKey_ = map.on('pointerdrag', this._render, this);
        this.moveendKey_ = map.on("moveend", this._render, this);
        this.centerChanged_ = map.getView().on("change:center", this._render, this);
        this.sizeChangedKey_ = map.on('change:size', this._reset, this);

        if(this.options.tileLoader) {
            ol.TileLoader.prototype._initTileLoader.call(this, map);
        }
        this._reset();
    }
};

ol.CanvasLayer.prototype._createCanvas = function() {
    var canvas;
    canvas = document.createElement('canvas');
    canvas.style.position = 'absolute';
    canvas.style.top = 0;
    canvas.style.left = 0;
    canvas.style.pointerEvents = "none";
    canvas.style.zIndex = this.options.zIndex || 0;
    return canvas;
};

ol.CanvasLayer.prototype._reset = function () {
    this._resize();
};

ol.CanvasLayer.prototype._resize =  function() {
    var size = this._map.getSize();
    var width = size[0];
    var height = size[1];
    var oldWidth = this._canvas.width;
    var oldHeight = this._canvas.height;

    // resizing may allocate a new back buffer, so do so conservatively
    if (oldWidth !== width || oldHeight !== height) {
        this._canvas.width = width;
        this._canvas.height = height;
        this._canvas.style.width = width + 'px';
        this._canvas.style.height = height + 'px';
        this.root_.style.width = width + 'px';
        this.root_.style.height = height + 'px';
        this._render();
    }
};

ol.CanvasLayer.prototype._render = function() {
    if (this.currentAnimationFrame >= 0) {
        this.cancelAnimationFrame.call(window, this.currentAnimationFrame);
    }
    this.currentAnimationFrame = this.requestAnimationFrame.call(window, this.render);
};

ol.CanvasLayer.prototype.getCanvas = function() {
        return this._canvas;
};

ol.CanvasLayer.prototype.getAttribution = function() {
        return this.options.attribution;
};

ol.CanvasLayer.prototype.draw = function() {
        return this._render();
};

ol.CanvasLayer.prototype.redraw = function(direct) {
    if (direct) {
        this.render();
    } else {
        this._render();
    }
};

module.exports = ol.CanvasLayer;
},{"./ol_tileloader_mixin":20}],19:[function(require,module,exports){
if (typeof ol !== 'undefined') {
    require('./torque');
}

},{"./torque":21}],20:[function(require,module,exports){
ol.TileLoader = function(tileSize, maxZoom){
    this._tileSize = tileSize;
    this._tiles = {};
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._updateTiles = this._updateTiles.bind(this);

    this._tileGrid = ol.tilegrid.createXYZ({
        maxZoom: maxZoom,
        tileSize: tileSize
    });
};

ol.TileLoader.prototype._initTileLoader = function(map) {
    this._map = map;
    this._view = map.getView();
    this._centerChangedId = this._view.on("change:center", function(e){
        this._updateTiles();
    },  this);

    this._postcomposeKey = undefined;

    this._resolutionChangedId = this._view.on("change:resolution", function(evt){
        this._currentResolution = this._view.getResolution();
        if(this._postcomposeKey) return;
        this.fire("mapZoomStart");
        this._postcomposeKey = this._map.on("postcompose", function(evt) {
            if(evt.frameState.viewState.resolution === this._currentResolution){
                this._updateTiles();
                this._map.unByKey(this._postcomposeKey);
                this._postcomposeKey = undefined;
                this.fire("mapZoomEnd");
            }
        }, this);
    }, this);

    this._updateTiles();
};
ol.TileLoader.prototype._removeTileLoader = function() {
    this._view.unByKey(this._centerChangedId);
    this._view.unByKey(this._resolutionChangedId );

    this._removeTiles();
};

ol.TileLoader.prototype._removeTiles = function () {
    for (var key in this._tiles) {
        this._removeTile(key);
    }
};

ol.TileLoader.prototype._reloadTiles = function() {
    this._removeTiles();
    this._updateTiles();
};

ol.TileLoader.prototype._updateTiles = function () {
    if (!this._map) { return; }

    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());
    var extent = this._view.calculateExtent(this._map.getSize());

    var tileRange = this._requestTilesForExtentAndZ(extent, zoom);
    this._removeOtherTiles(tileRange);
};

ol.TileLoader.prototype._removeOtherTiles = function(tileRange) {
    var kArr, x, y, z, key;

    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());

    for (key in this._tiles) {
        if (this._tiles.hasOwnProperty(key)) {
            kArr = key.split(':');
            x = parseInt(kArr[0], 10);
            y = parseInt(kArr[1], 10);
            z = parseInt(kArr[2], 10);

            // remove tile if it's out of bounds
            if (z !== zoom || x < tileRange.minX || x > tileRange.maxX || ((-y-1) < tileRange.minY) || (-y-1) > tileRange.maxY) {
                this._removeTile(key);
            }
        }
    }
};

ol.TileLoader.prototype._removeTile = function (key) {
    this.fire('tileRemoved', this._tiles[key]);
    delete this._tiles[key];
    delete this._tilesLoading[key];
};

ol.TileLoader.prototype._tileKey = function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
};

ol.TileLoader.prototype._tileShouldBeLoaded = function (tilePoint) {
    var k = this._tileKey(tilePoint);
    return !(k in this._tiles)  && !(k in this._tilesLoading);
};

ol.TileLoader.prototype._removeFromTilesLoading = function(tilePoint){
    this._tilesToLoad--;
    var k = this._tileKey(tilePoint);
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
        this.fire("tilesLoaded");
    }
};

ol.TileLoader.prototype._tileLoaded = function(tilePoint, tileData) {
    var k = this._tileKey(tilePoint);
    this._tiles[k] = tileData;
};

ol.TileLoader.prototype.getTilePos = function (tilePoint) {
    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());
    var extent = this._tileGrid.getTileCoordExtent([zoom, tilePoint.x, -tilePoint.y-1]);
    var topLeft = this._map.getPixelFromCoordinate([extent[0], extent[3]]);

    return {
        x: topLeft[0],
        y: topLeft[1]
    };
};

ol.TileLoader.prototype._requestTilesForExtentAndZ = function (extent, zoom) {
    var queue = [];
    var tileCoords = [];

    this._tileGrid.forEachTileCoord(extent, zoom, function(coord){
        tileCoords.push(coord);
        var point = {
            x: coord[1],
            y: -coord[2] - 1,
            zoom: coord[0]
        };

        if (this._tileShouldBeLoaded(point)) {
            queue.push(point);
        }
    }.bind(this));

    var tilesToLoad = queue.length;
    if (tilesToLoad > 0) {
        this._tilesToLoad += tilesToLoad;

        for (var i = 0; i < tilesToLoad; i++) {
            var t = queue[i];
            var k = this._tileKey(t);
            this._tilesLoading[k] = t;
            // events
            this.fire('tileAdded', t);
        }

        this.fire("tilesLoading");
    }

    var tileRange = {
        minX : tileCoords[0][1],
        maxX : tileCoords [tileCoords.length - 1][1],
        minY : tileCoords[0][2],
        maxY : tileCoords [tileCoords.length - 1] [2]
    };

    return tileRange;
};

module.exports = ol.TileLoader;

},{}],21:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');
require('./canvas_layer');

ol.TorqueLayer = function(options){
    var self = this;
    if (!torque.isBrowserSupported()) {
        throw new Error("browser is not supported by torque");
    }
    options.tileLoader = true;
    this.keys = [0];
    Object.defineProperty(this, 'key', {
        get: function() {
            return this.getKey();
        }
    });
    this.prevRenderedKey = 0;
    if (options.cartocss) {
        torque.extend(options, torque.common.TorqueLayer.optionsFromCartoCSS(options.cartocss));
    }

    options.resolution = options.resolution || 2;
    options.steps = options.steps || 100;
    options.visible = options.visible === undefined ? true: options.visible;
    this.hidden = !options.visible;

    this.animator = new torque.Animator(function(time) {
        var k = time | 0;
        if(self.getKey() !== k) {
            self.setKey(k, { direct: true });
        }
    }, torque.extend(torque.clone(options), {
        onPause: function() {
            self.fire('pause');
        },
        onStop: function() {
            self.fire('stop');
        },
        onStart: function() {
            self.fire('play');
        },
        onStepsRange: function() {
            self.fire('change:stepsRange', self.animator.stepsRange());
        }
    }));

    this.play = this.animator.start.bind(this.animator);
    this.stop = this.animator.stop.bind(this.animator);
    this.pause = this.animator.pause.bind(this.animator);
    this.toggle = this.animator.toggle.bind(this.animator);
    this.setDuration = this.animator.duration.bind(this.animator);
    this.isRunning = this.animator.isRunning.bind(this.animator);


    ol.CanvasLayer.call(this, options);

    this.options.renderer = this.options.renderer || 'point';
    this.options.provider = this.options.provider || 'windshaft';

    if (this.options.tileJSON) this.options.provider = 'tileJSON';

    this.provider = new this.providers[this.options.provider](options);
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), options);

    options.ready = function() {
        self.fire("change:bounds", {
            bounds: self.provider.getBounds()
        });
        self.animator.steps(self.provider.getSteps());
        self.animator.rescale();
        self.fire('change:steps', {
            steps: self.provider.getSteps()
        });
        self.setKeys(self.getKeys());
    };

    this.renderer.on("allIconsLoaded", this.render.bind(this));


    // for each tile shown on the map request the data
    this.on('tileAdded', function(t) {
        var tileData = this.provider.getTileData(t, t.zoom, function(tileData) {
            self._removeFromTilesLoading(t);
            if (t.zoom !== self._tileGrid.getZForResolution(self._view.getResolution())) return;
            self._tileLoaded(t, tileData);
            self.fire('tileLoaded');
            if (tileData) {
                self.redraw();
            }
        });
    }, this);

    this.on('mapZoomStart', function(){
        this.getCanvas().style.display = "none";
        this._pauseOnZoom();
    }, this);

    this.on('mapZoomEnd', function() {
        this.getCanvas().style.display = "block";
        this._resumeOnZoom();
    }, this);
};

ol.TorqueLayer.prototype = torque.extend({},
    ol.CanvasLayer.prototype,
    torque.Event,
    {
    providers: {
        'sql_api': torque.providers.json,
        'url_template': torque.providers.JsonArray,
        'windshaft': torque.providers.windshaft,
        'tileJSON': torque.providers.tileJSON
    },

    renderers: {
        'point': torque.renderer.Point,
        'pixel': torque.renderer.Rectangle
    },

    onAdd: function(map){
        ol.CanvasLayer.prototype.setMap.call(this, map);
    },

    onRemove: function(map) {
        this.fire('remove');
        this._removeTileLoader();
    },

    _pauseOnZoom: function() {
        this.wasRunning = this.isRunning();
        if (this.wasRunning) {
            this.pause();
        }
    },

    _resumeOnZoom: function() {
        if (this.wasRunning) {
            this.play();
        }
    },

    hide: function() {
        if(this.hidden) return this;
        this.pause();
        this.clear();
        this.hidden = true;
        return this;
    },

    show: function() {
        if(!this.hidden) return this;
        this.hidden = false;
        this.play();
        if (this.options.steps === 1){
            this.redraw();
        }
        return this;
    },

    setSQL: function(sql) {
        if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
        if (!this.provider || !this.provider.setSQL) {
            throw new Error("this provider does not support SQL");
        }
        this.provider.setSQL(sql);
        this._reloadTiles();
        return this;
    },

    setBlendMode: function(_) {
        this.renderer.setBlendMode(_);
        this.redraw();
    },

    setSteps: function(steps) {
        this.provider.setSteps(steps);
        this._reloadTiles();
    },

    setColumn: function(column, isTime) {
        this.provider.setColumn(column, isTime);
        this._reloadTiles();
    },

    getTimeBounds: function() {
        return this.provider && this.provider.getKeySpan();
    },

    clear: function() {
        var canvas = this.getCanvas();
        canvas.width = canvas.width;
    },

    /**
     * render the selectef key
     * don't call this function directly, it's called by
     * requestAnimationFrame. Use redraw to refresh it
     */
    render: function() {
        if(this.hidden) return;
        var t, tile, pos;
        var canvas = this.getCanvas();
        this.renderer.clearCanvas();
        var ctx = canvas.getContext('2d');

        // renders only a "frame"
        for(t in this._tiles) {
            tile = this._tiles[t];
            if (tile) {
                pos = this.getTilePos(tile.coord);
                ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);
                this.renderer.renderTile(tile, this.keys);
            }
        }
        this.renderer.applyFilters();
    },

    /**
     * set key to be shown. If it's a single value
     * it renders directly, if it's an array it renders
     * accumulated
     */
    setKey: function(key, options) {
        this.setKeys([key], options);
    },

    /**
     * returns the array of keys being rendered
     */
    getKeys: function() {
        return this.keys;
    },

    setKeys: function(keys, options) {
        this.keys = keys;
        this.animator.step(this.getKey());
        this.redraw(options && options.direct);
        this.fire('change:time', {
            time: this.getTime(),
            step: this.getKey(),
            start: this.getKey(),
            end: this.getLastKey()
        });
    },

    getKey: function() {
        return this.keys[0];
    },

    getLastKey: function() {
        return this.keys[this.keys.length - 1];
    },

    /**
     * helper function, does the same than ``setKey`` but only
     * accepts scalars.
     */
    setStep: function(time) {
        if(time === undefined || time.length !== undefined) {
            throw new Error("setTime only accept scalars");
        }
        this.setKey(time);
    },

    renderRange: function(start, end) {
        this.pause();
        var keys = [];
        for (var i = start; i <= end; i++) {
            keys.push(i);
        }
        this.setKeys(keys);
    },

    resetRenderRange: function() {
        this.stop();
        this.play();
    },

    /**
     * transform from animation step to Date object
     * that contains the animation time
     *
     * ``step`` should be between 0 and ``steps - 1``
     */
    stepToTime: function(step) {
        var times = this.provider.getKeySpan();
        var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
        return new Date(time);
    },

    timeToStep: function(timestamp) {
        if (typeof timestamp === "Date") timestamp = timestamp.getTime();
        if (!this.provider) return 0;
        var times = this.provider.getKeySpan();
        var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
        return step;
    },

    getStep: function() {
        return this.getKey();
    },

    /**
     * returns the animation time defined by the data
     * in the defined column. Date object
     */
    getTime: function() {
        return this.stepToTime(this.getKey());
    },

    /**
     * returns an object with the start and end times
     */
    getTimeSpan: function() {
        return this.provider.getKeySpan();
    },

    /**
     * set the cartocss for the current renderer
     */
    setCartoCSS: function(cartocss) {
        if (this.provider.options.named_map) throw new Error("CartoCSS style on named maps is read-only");
        if (!this.renderer) throw new Error('renderer is not valid');
        var shader = new carto.RendererJS().render(cartocss);
        this.renderer.setShader(shader);

        // provider options
        var options = torque.common.TorqueLayer.optionsFromLayer(shader.findLayer({ name: 'Map' }));
        this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
        if(this.provider.setOptions(options)) {
            this._reloadTiles();
        }

        torque.extend(this.options, options);

        // animator options
        if (options.animationDuration) {
            this.animator.duration(options.animationDuration);
        }
        this.redraw();
        return this;
    },

    /**
     * get active points for a step in active zoom
     * returns a list of bounding boxes [[] , [], []]
     * empty list if there is no active pixels
     */
    getActivePointsBBox: function(step) {
        var positions = [];
        for(var t in this._tiles) {
            var tile = this._tiles[t];
            positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
        }
        return positions;
    },

    /**
     * return an array with the values for all the pixels active for the step
     */
    getValues: function(step) {
        var values = [];
        step = step === undefined ? this.getKey(): step;
        var t, tile;
        for(t in this._tiles) {
            tile = this._tiles[t];
            this.renderer.getValues(tile, step, values);
        }
        return values;
    },

    /**
     * return the value for position relative to map coordinates. null for no value
     */
    getValueForPos: function(x, y, step) {
        step = step === undefined ? this.getKey(): step;
        var t, tile, pos, value = null, xx, yy;
        for(t in this._tiles) {
            tile = this._tiles[t];
            pos = this.getTilePos(tile.coord);
            xx = x - pos.x;
            yy = y - pos.y;
            if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
                value = this.renderer.getValueFor(tile, step, xx, yy);
            }
            if (value !== null) {
                return value;
            }
        }
        return null;
    },

    getValueForBBox: function(x, y, w, h) {
        var xf = x + w, yf = y + h, _x=x;
        var sum = 0;
        for(_y = y; _y<yf; _y+=this.options.resolution){
            for(_x = x; _x<xf; _x+=this.options.resolution){
                var thisValue = this.getValueForPos(_x,_y);
                if (thisValue){
                    var bb = thisValue.bbox;
                    var xy = this._map.latLngToContainerPoint([bb[1].lat, bb[1].lon]);
                    if(xy.x < xf && xy.y < yf){
                        sum += thisValue.value;
                    }
                }
            }
        }
        return sum;
    },

    /** return the number of points for a step */
    pointCount: function(step) {
        var t, tile;
        step = step === undefined ? this.key: step;
        var c = 0;
        for(t in this._tiles) {
            tile = this._tiles[t];
            if (tile) {
                c += tile.timeCount[step];
            }
        }
        return c;
    },

    invalidate: function() {
        this.provider.reload();
    },

    setStepsRange: function(start, end) {
        this.animator.stepsRange(start, end);
    },

    removeStepsRange: function() {
        this.animator.removeCustomStepsRange();
    },

    getStepsRange: function() {
        return this.animator.stepsRange();
    }
});


module.exports = ol.TorqueLayer;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./canvas_layer":18,"carto":40}],22:[function(require,module,exports){
/*
# metrics profiler

## timing

```
 var timer = Profiler.metric('resource:load')
 time.start();
 ...
 time.end();
```

## counters

```
 var counter = Profiler.metric('requests')
 counter.inc();   // 1
 counter.inc(10); // 11
 counter.dec()    // 10
 counter.dec(10)  // 0
```

## Calls per second
```
  var fps = Profiler.metric('fps')
  function render() {
    fps.mark();
  }
```
*/
var MAX_HISTORY = 1024;
function Profiler() {}
Profiler.metrics = {};

Profiler.get = function(name) {
  return Profiler.metrics[name] || {
    max: 0,
    min: Number.MAX_VALUE,
    avg: 0,
    total: 0,
    count: 0,
    history: typeof(Float32Array) !== 'undefined' ? new Float32Array(MAX_HISTORY) : []
  };
};

Profiler.new_value = function (name, value) {
  var t = Profiler.metrics[name] = Profiler.get(name);

  t.max = Math.max(t.max, value);
  t.min = Math.min(t.min, value);
  t.total += value;
  ++t.count;
  t.avg = t.total / t.count;
  t.history[t.count%MAX_HISTORY] = value;
};

Profiler.print_stats = function () {
  for (k in Profiler.metrics) {
    var t = Profiler.metrics[k];
    console.log(" === " + k + " === ");
    console.log(" max: " + t.max);
    console.log(" min: " + t.min);
    console.log(" avg: " + t.avg);
    console.log(" count: " + t.count);
    console.log(" total: " + t.total);
  }
};

function Metric(name) {
  this.t0 = null;
  this.name = name;
  this.count = 0;
}

Metric.prototype = {

  //
  // start a time measurement
  //
  start: function() {
    this.t0 = +new Date();
    return this;
  },

  // elapsed time since start was called
  _elapsed: function() {
    return +new Date() - this.t0;
  },

  //
  // finish a time measurement and register it
  // ``start`` should be called first, if not this 
  // function does not take effect
  //
  end: function() {
    if (this.t0 !== null) {
      Profiler.new_value(this.name, this._elapsed());
      this.t0 = null;
    }
  },

  //
  // increments the value 
  // qty: how many, default = 1
  //
  inc: function(qty) {
    qty = qty === undefined ? 1: qty;
    Profiler.new_value(this.name, Profiler.get(this.name).count + (qty ? qty: 0));
  },

  //
  // decrements the value 
  // qty: how many, default = 1
  //
  dec: function(qty) {
    qty = qty === undefined ? 1: qty;
    this.inc(-qty);
  },

  //
  // measures how many times per second this function is called
  //
  mark: function() {
    ++this.count;
    if(this.t0 === null) {
      this.start();
      return;
    }
    var elapsed = this._elapsed();
    if(elapsed > 1) {
      Profiler.new_value(this.name, this.count);
      this.count = 0;
      this.start();
    }
  }
};

Profiler.metric = function(name) {
  return new Metric(name);
};

module.exports = Profiler;

},{}],23:[function(require,module,exports){
module.exports = {
    json: require('./json'),
    JsonArray: require('./jsonarray'),
    windshaft: require('./windshaft'),
    tileJSON: require('./tilejson')
};

},{"./json":24,"./jsonarray":25,"./tilejson":26,"./windshaft":27}],24:[function(require,module,exports){
var torque = require('../');
var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var json = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.is_time = this.options.is_time === undefined ? true: this.options.is_time;
    this.options.tiler_protocol = options.tiler_protocol || 'http';
    this.options.tiler_domain = options.tiler_domain || 'cartodb.com';
    this.options.tiler_port = options.tiler_port || 80;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }

    // check options
    if (options.resolution === undefined ) throw new Error("resolution should be provided");
    if (options.steps === undefined ) throw new Error("steps should be provided");
    if(options.start === undefined) {
      this._fetchKeySpan();
    } else {
      this._setReady(true);
    }
  };

  json.prototype = {

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new Uint8Array(rows.length);
      var y = new Uint8Array(rows.length);

      var prof_mem = Profiler.metric('ProviderJSON:mem');
      var prof_point_count = Profiler.metric('ProviderJSON:point_count');
      var prof_process_time = Profiler.metric('ProviderJSON:process_time').start()

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8Array;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      prof_mem.inc(
        4 * maxDateSlots + // timeIndex
        4 * maxDateSlots + // timeCount
        dates + //renderData
        dates * 4
      ); //renderDataPos

      prof_point_count.inc(rows.length);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        // fix value when it's in the tile EDGE
        // TODO: this should be fixed in SQL query
        if (row.y__uint8 === -1) {
          y[r] = 0;
        } else {
          y[r] = row.y__uint8 * this.options.resolution;
        }

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }

          /*var lastDateSlot = dates[dates.length - 1];
          for (var j = lastDateSlot + 1; j <= maxDateSlots; ++j) {
            var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
            rr.push([r, prev_val]);
          }
          */
        }

      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      prof_process_time.end();

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    _host: function() {
      var opts = this.options;
      var port = opts.sql_api_port;
      var domain = ((opts.user_name || opts.user) + '.' + (opts.sql_api_domain || 'cartodb.com')) + (port ? ':' + port: '');
      var protocol = opts.sql_api_protocol || 'http';
      return this.options.url || protocol + '://' + domain + '/api/v2/sql';
    },

    url: function(subhost) {
      var opts = this.options;
      var protocol = opts.sql_api_protocol || 'http';
      if (!this.options.cdn_url) {
        return this._host();
      }
      var h = protocol+ "://";
      if (subhost) {
        h += subhost + ".";
      }
      var cdn_host = opts.cdn_url;
      if(!cdn_host.http && !cdn_host.https) {
        throw new Error("cdn_host should contain http and/or https entries");
      }
      h += cdn_host[protocol] + "/" + (opts.user_name || opts.user) + '/api/v2/sql';
      return h;
    },

    _hash: function(str) {
      var hash = 0;
      if (!str || str.length == 0) return hash;
      for (var i = 0, l = str.length; i < l; ++i) {
          hash = (( (hash << 5 ) - hash ) + str.charCodeAt(i)) | 0;
      }
      return hash;
    },

    _extraParams: function() {
      if (this.options.extra_params) {
        var p = [];
        for(var k in this.options.extra_params) {
          var v = this.options.extra_params[k];
          if (v) {
            p.push(k + "=" + encodeURIComponent(v));
          }
        }
        return p.join('&');
      }
      return null;
    },

    isHttps: function() {
      return this.options.sql_api_protocol && this.options.sql_api_protocol === 'https';
    },

    // execute actual query
    sql: function(sql, callback, options) {
      options = options || {};
      var subdomains = this.options.subdomains || '0123';
      if(this.isHttps()) {
        subdomains = [null]; // no subdomain
      }


      var url;
      if (options.no_cdn) {
        url = this._host();
      } else {
        url = this.url(subdomains[Math.abs(this._hash(sql))%subdomains.length]);
      }
      var extra = this._extraParams();
      torque.net.get( url + "?q=" + encodeURIComponent(sql) + (extra ? "&" + extra: ''), function (data) {
          if(options.parseJSON) {
            data = JSON.parse(data && data.responseText);
          }
          callback && callback(data);
      });
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var prof_fetch_time = Profiler.metric('ProviderJSON:tile_fetch_time').start()
      this.table = this.options.table;
      var numTiles = 1 << zoom;

      var column_conv = this.options.column;

      if(this.options.is_time) {
        column_conv = format("date_part('epoch', {column})", this.options);
      }

      var sql = "" +
        "WITH " +
        "par AS (" +
        "  SELECT CDB_XYZ_Resolution({zoom})*{resolution} as res" +
        ",  256/{resolution} as tile_size" +
        ", CDB_XYZ_Extent({x}, {y}, {zoom}) as ext "  +
        ")," +
        "cte AS ( "+
        "  SELECT ST_SnapToGrid(i.the_geom_webmercator, p.res) g" +
        ", {countby} c" +
        ", floor(({column_conv} - {start})/{step}) d" +
        "  FROM ({_sql}) i, par p " +
        "  WHERE i.the_geom_webmercator && p.ext " +
        "  GROUP BY g, d" +
        ") " +
        "" +
        "SELECT (st_x(g)-st_xmin(p.ext))/p.res x__uint8, " +
        "       (st_y(g)-st_ymin(p.ext))/p.res y__uint8," +
        " array_agg(c) vals__uint8," +
        " array_agg(d) dates__uint16" +
        // the tile_size where are needed because the overlaps query in cte subquery includes the points
        // in the left and bottom borders of the tile
        " FROM cte, par p where (st_y(g)-st_ymin(p.ext))/p.res < tile_size and (st_x(g)-st_xmin(p.ext))/p.res < tile_size GROUP BY x__uint8, y__uint8";


      var query = format(sql, this.options, {
        zoom: zoom,
        x: coord.x,
        y: coord.y,
        column_conv: column_conv,
        _sql: this.getSQL()
      });

      var self = this;
      this.sql(query, function (data) {
        if (data) {
          var rows = JSON.parse(data.responseText).rows;
          callback(self.proccessTile(rows, coord, zoom));
        } else {
          callback(null);
        }
        prof_fetch_time.end();
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start * 1000,
        end: this.options.end * 1000,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.is_time ? 'date': 'number'
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    setResolution: function(res) {
      this.options.resolution = res;
    },

    // return true if tiles has been changed
    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;

    },

    reload: function() {
      this._ready = false;
      this._fetchKeySpan();
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    setSteps: function(steps, opt) {
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    _tilerHost: function() {
      var opts = this.options;
      var user = (opts.user_name || opts.user);
      return opts.tiler_protocol +
           "://" + (user ? user + "." : "")  +
           opts.tiler_domain +
           ((opts.tiler_port != "") ? (":" + opts.tiler_port) : "");
    },

    _fetchUpdateAt: function(callback) {
      var self = this;
      var layergroup = {
        "version": "1.0.1",
        "stat_tag": this.options.stat_tag || 'torque',
        "layers": [{
          "type": "cartodb",
          "options": {
            "cartocss_version": "2.1.1", 
            "cartocss": "#layer {}",
            "sql": this.getSQL()
          }
        }]
      };
      var url = this._tilerHost() + "/tiles/layergroup";
      var extra = this._extraParams();

      // tiler needs map_key instead of api_key
      // so replace it
      if (extra) {
        extra = extra.replace('api_key=', 'map_key=');
      }

      url = url +
        "?config=" + encodeURIComponent(JSON.stringify(layergroup)) +
        "&callback=?" + (extra ? "&" + extra: '');

      torque.net.jsonp(url, function (data) {
        var query = format("select * from ({sql}) __torque_wrap_sql limit 0", { sql: self.getSQL() });
        self.sql(query, function (queryData) {
          if (data && queryData) {
            callback({
              updated_at: data.last_updated,
              fields: queryData.fields
            });
          }
        }, { parseJSON: true });
      });
    },

    //
    // the data range could be set by the user though ``start``
    // option. It can be fecthed from the table when the start
    // is not specified.
    //
    _fetchKeySpan: function() {
      var self = this;
      var max_col, min_col, max_tmpl, min_tmpl;

      this._fetchUpdateAt(function(data) {
        if (!data) return;
        self.options.extra_params = self.options.extra_params || {};
        self.options.extra_params.last_updated = data.updated_at || 0;
        self.options.extra_params.cache_policy = 'persist';
        self.options.is_time = data.fields[self.options.column].type === 'date';

        var column_conv = self.options.column;
        if (self.options.is_time){
          max_tmpl = "date_part('epoch', max({column}))";
          min_tmpl = "date_part('epoch', min({column}))";
          column_conv = format("date_part('epoch', {column})", self.options);
        } else {
          max_tmpl = "max({column})";
          min_tmpl = "min({column})";
        }

        max_col = format(max_tmpl, { column: self.options.column });
        min_col = format(min_tmpl, { column: self.options.column });

        /*var sql_stats = "" +
        "WITH summary_groups as ( " +
          "WITH summary as ( " +
           "select   (row_number() over (order by __time_col asc nulls last)+1)/2 as rownum, __time_col " +
            "from (select *, {column} as __time_col from ({sql}) __s) __torque_wrap_sql " +
            "order by __time_col asc " +
          ") " +
          "SELECT " +
          "max(__time_col) OVER(PARTITION BY rownum) -  " +
          "min(__time_col) OVER(PARTITION BY rownum) diff " +
          "FROM summary " +
        "), subq as ( " +
        " SELECT " +
            "st_xmax(st_envelope(st_collect(the_geom))) xmax, " +
            "st_ymax(st_envelope(st_collect(the_geom))) ymax, " +
            "st_xmin(st_envelope(st_collect(the_geom))) xmin, " +
            "st_ymin(st_envelope(st_collect(the_geom))) ymin, " +
            "{max_col} max, " +
            "{min_col} min FROM  ({sql}) __torque_wrap_sql " +
        ")" +
        "SELECT " +
        "xmax, xmin, ymax, ymin, a.max as max_date, a.min as min_date, " +
        "avg(diff) as diffavg," +
        "(a.max - a.min)/avg(diff) as num_steps " +
        "FROM summary_groups, subq a  " +
        "WHERE diff > 0 group by xmax, xmin, ymax, ymin, max_date, min_date";
        */
        var sql_stats = " SELECT " +
            "st_xmax(st_envelope(st_collect(the_geom))) xmax, " +
            "st_ymax(st_envelope(st_collect(the_geom))) ymax, " +
            "st_xmin(st_envelope(st_collect(the_geom))) xmin, " +
            "st_ymin(st_envelope(st_collect(the_geom))) ymin, " +
            "count(*) as num_steps, " +
            "{max_col} max_date, " +
            "{min_col} min_date FROM  ({sql}) __torque_wrap_sql ";

        var sql = format(sql_stats, {
          max_col: max_col,
          min_col: min_col,
          column: column_conv,
          sql: self.getSQL()
        });

        self.sql(sql, function(data) {
          //TODO: manage bounds
          data = data.rows[0];
          self.options.start = data.min_date;
          self.options.end = data.max_date;
          self.options.step = (data.max_date - data.min_date)/Math.min(self.options.steps, data.num_steps>>0);
          self.options.data_steps = data.num_steps >> 0;
          // step can't be 0
          self.options.step = self.options.step || 1;
          self.options.bounds = [
            [data.ymin, data.xmin],
            [data.ymax, data.xmax]
          ];
          self._setReady(true);
        }, { parseJSON: true, no_cdn: true });
      }, { parseJSON: true, no_cdn: true})
    }

  };

module.exports = json;

},{"../":11,"../profiler":22}],25:[function(require,module,exports){
var torque = require('../');
var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str, attrs) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var json = function (options) {
    // check options
    this.options = options;
  };


  json.prototype = {

    //
    // return the data aggregated by key:
    // {
    //  key0: 12,
    //  key1: 32
    //  key2: 25
    // }
    //
    aggregateByKey: function(rows) {
      function getKeys(row) {
        var HEADER_SIZE = 3;
        var valuesCount = row.data[2];
        var keys = {};
        for (var s = 0; s < valuesCount; ++s) {
          keys[row.data[HEADER_SIZE + s]] = row.data[HEADER_SIZE + valuesCount + s];
        }
        return keys;
      }
      var keys = {};
      for (r = 0; r < rows.length; ++r) {
        var rowKeys = getKeys(rows[r]);
        for(var k in rowKeys) {
          keys[k] = keys[k] || 0;
          keys[k] += rowKeys[k];
        }
      }
      return keys;
    },
    



    /**
     *
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new Uint8Array(rows.length);
      var y = new Uint8Array(rows.length);
      var self = this;

      // decode into a javascript strcuture the array
      function decode_row(row) {
        var HEADER_SIZE = 3;
        var o = {
          x: row.data[0] * self.options.resolution,
          y: row.data[1] * self.options.resolution,
          valuesCount: row.data[2],
          times: [],
          values: []
        };
        for (var s = 0; s < o.valuesCount; ++s) {
           o.times.push(row.data[HEADER_SIZE + s]);
           o.values.push(row.data[HEADER_SIZE + o.valuesCount + s]);
        }
        if(self.options.cumulative) {
          for (var s = 1; s < o.valuesCount; ++s) {
           o.values[s] += o.values[s - 1];
          }
        }
        return o
      }

      // decode all the rows
      for (r = 0; r < rows.length; ++r) {
        rows[r] = decode_row(rows[r]);
      }

      // count number of dates
      var dates = 0;
      var maxDateSlots = 0;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.times.length;
        for(var d = 0; d < row.times.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.times[d]);
        }
      }

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || Uint8Array)(dates);
      var renderDataPos = new Uint32Array(dates);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x;
        y[r] = row.y;

        var dates = row.times;
        var vals = row.values;
        for (var j = 0, len = dates.length; j < len; ++j) {
            var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
            rr.push([r, vals[j]]);
        }
      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      return {
        x: x,
        y: y,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData
      };
    },

    url: function() {
      return this.options.url;
    },


    tileUrl: function(coord, zoom) {
      var template = this.url();
      var s = (this.options.subdomains || 'abcd')[(coord.x + coord.y + zoom) % 4];
      return template
        .replace('{x}', coord.x)
        .replace('{y}', coord.y)
        .replace('{z}', zoom)
        .replace('{s}', s);
    },

    getTile: function(coord, zoom, callback) {
      var template = this.tileUrl(coord, zoom);

      var self = this;
      var fetchTime = Profiler.metric('jsonarray:fetch time');
      fetchTime.start();
      torque.net.get(template, function (data) {
        fetchTime.end();
        if(data) {
          data = JSON.parse(data.responseText);
        }
        callback(data);
      });
    },

    /**
     * `coord` object like {x : tilex, y: tiley } 
     * `zoom` quadtree zoom level
     */
    getTileData: function(coord, zoom, callback) {
      var template = this.tileUrl(coord, zoom);

      var self = this;
      var fetchTime = Profiler.metric('jsonarray:fetch time');
      fetchTime.start();
      torque.net.get(template, function (data) {
        fetchTime.end();
        var processed = null;
        
        var processingTime = Profiler.metric('jsonarray:processing time');
        var parsingTime = Profiler.metric('jsonarray:parsing time');
        try {
          processingTime.start();
          parsingTime.start();
          var rows = JSON.parse(data.responseText || data.response).rows;
          parsingTime.end();
          processed = self.proccessTile(rows, coord, zoom);
          processingTime.end();
        } catch(e) {
          console.error("problem parsing JSON on ", coord, zoom);
        }

        callback(processed);

      });
    }

  };

  module.exports = json;

},{"../":11,"../profiler":22}],26:[function(require,module,exports){
  var torque = require('../');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;
  var Uint8ClampedArray = torque.types.Uint8ClampedArray;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var tileJSON = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.coordinates_data_type = this.options.coordinates_data_type || Uint8Array;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }
    if (this.options.auth_token) {
      var e = this.options.extra_params || (this.options.extra_params = {});
      e.auth_token = this.options.auth_token;
    }
    if (!this.options.no_fetch_map) {
      this._fetchMap();
    }
  };

  tileJSON.prototype = {

    NAME: "tileJSON",

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new this.options.coordinates_data_type(rows.length);
      var y = new this.options.coordinates_data_type(rows.length);

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8ClampedArray;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        y[r] = row.y__uint8 * this.options.resolution;

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }
        }
      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    setSteps: function(steps, opt) { 
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;
    },

    _extraParams: function(e) {
      e = torque.extend(torque.extend({}, e), this.options.extra_params);
      if (e) {
        var p = [];
        for(var k in e) {
          var v = e[k];
          if (v) {
            if (torque.isArray(v)) {
              for (var i = 0, len = v.length; i < len; i++) {
                p.push(k + "[]=" + encodeURIComponent(v[i]));
              }
            } else {
              p.push(k + "=" + encodeURIComponent(v));
            }
          }
        }
        return p.join('&');
      }
      return null;
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var self = this;
      var subdomains = this.options.subdomains || '0123';
      var limit_x = Math.pow(2, zoom);
      var corrected_x = ((coord.x % limit_x) + limit_x) % limit_x;
      var index = Math.abs(corrected_x + coord.y) % subdomains.length;
      var extra = this._extraParams();
      var url = this.templateUrl
                .replace('{x}', corrected_x)
                .replace('{y}', coord.y)
                .replace('{z}', zoom)
                .replace('{s}', subdomains[index])
      url += extra;
      torque.net.get( url , function (data) {
        if (data && data.responseText) {
          var rows = JSON.parse(data.responseText);
          callback(self.proccessTile(rows, coord, zoom));
        } else {
          callback(null);
        }
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start,
        end: this.options.end,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.column_type
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    reload: function() {
      this._ready = false;
      this._fetchMap();
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    _isUserTemplateUrl: function(t) {
      return t && t.indexOf('{user}') !== -1;
    },

    isHttps: function() {
      return this.options.maps_api_template.indexOf('https') === 0;
    },

    _fetchMap: function(callback) {
      var self = this;
      torque.net.get(this.options.tileJSON, function (data) {
        data = JSON.parse(data.response);
        if (data) {
          if (data.errors){
            self.options.errorCallback && self.options.errorCallback(data.errors);
            return;
          }
          for(var k in data) {
            self.options[k] = data[k];
          }
          self.templateUrl = data.tiles[0];
          if (self.templateUrl.indexOf("http") !== 0){
            self.templateUrl = self.options.tileJSON.substring(0, self.options.tileJSON.lastIndexOf("/") + 1) + self.templateUrl;
          }
          self._setReady(true);
        }
      });
    }
  };

  module.exports = tileJSON;
},{"../":11}],27:[function(require,module,exports){
  var torque = require('../');
  var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;
  var Uint8ClampedArray = torque.types.Uint8ClampedArray;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var windshaft = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.is_time = this.options.is_time === undefined ? true: this.options.is_time;
    this.options.tiler_protocol = options.tiler_protocol || 'http';
    this.options.tiler_domain = options.tiler_domain || 'cartodb.com';
    this.options.tiler_port = options.tiler_port || 80;

    // backwards compatible
    if (!options.maps_api_template) {
      this._buildMapsApiTemplate(this.options);
    } else {
      this.options.maps_api_template =  options.maps_api_template;
    }

    this.options.coordinates_data_type = this.options.coordinates_data_type || Uint8Array;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }
    if (this.options.auth_token) {
      var e = this.options.extra_params || (this.options.extra_params = {});
      e.auth_token = this.options.auth_token;
    }
    if (!this.options.no_fetch_map) {
      this._fetchMap();
    }
  };

  windshaft.prototype = {

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new this.options.coordinates_data_type(rows.length);
      var y = new this.options.coordinates_data_type(rows.length);

      var prof_mem = Profiler.metric('torque.provider.windshaft.mem');
      var prof_point_count = Profiler.metric('torque.provider.windshaft.points');
      var prof_process_time = Profiler.metric('torque.provider.windshaft.process_time').start();

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8ClampedArray;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      prof_mem.inc(
        4 * maxDateSlots + // timeIndex
        4 * maxDateSlots + // timeCount
        dates + //renderData
        dates * 4
      ); //renderDataPos

      prof_point_count.inc(rows.length);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        y[r] = row.y__uint8 * this.options.resolution;

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }

          /*var lastDateSlot = dates[dates.length - 1];
          for (var j = lastDateSlot + 1; j <= maxDateSlots; ++j) {
            var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
            rr.push([r, prev_val]);
          }
          */
        }

      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      prof_process_time.end();

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    proccessTileError: function(error, coord, zoom) {
      return {
        error: error,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        }
      };
    },

    /*setCartoCSS: function(c) {
      this.options.cartocss = c;
    },*/

    setSteps: function(steps, opt) {
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;
    },

    _extraParams: function(e) {
      e = torque.extend(torque.extend({}, e), this.options.extra_params);
      if (e) {
        var p = [];
        for(var k in e) {
          var v = e[k];
          if (v) {
            if (torque.isArray(v)) {
              for (var i = 0, len = v.length; i < len; i++) {
                p.push(k + "[]=" + encodeURIComponent(v[i]));
              }
            } else {
              p.push(k + "=" + encodeURIComponent(v));
            }
          }
        }
        return p.join('&');
      }
      return null;
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var self = this;
      var prof_fetch_time = Profiler.metric('torque.provider.windshaft.tile.fetch').start();
      var subdomains = this.options.subdomains || '0123';
      var limit_x = Math.pow(2, zoom);
      var corrected_x = ((coord.x % limit_x) + limit_x) % limit_x;
      var index = Math.abs(corrected_x + coord.y) % subdomains.length;
      var url = this.templateUrl
                .replace('{x}', corrected_x)
                .replace('{y}', coord.y)
                .replace('{z}', zoom)
                .replace('{s}', subdomains[index])

      var extra = this._extraParams();
      torque.net.get( url + (extra ? "?" + extra: ''), function (response) {
        prof_fetch_time.end();
        if (response && response.responseText) {
          var body = JSON.parse(response.responseText);

          if (response.status === 429) {
            var error = body.errors_with_context[0];

            callback(self.proccessTileError(error, coord, zoom), error);
          } else {
            callback(self.proccessTile(body, coord, zoom));
          }
        } else {
          Profiler.metric('torque.provider.windshaft.tile.error').inc();
          callback(null);
        }
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start,
        end: this.options.end,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.column_type
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    reload: function() {
      this._ready = false;
      this._fetchMap();
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    _buildMapsApiTemplate: function(opts) {
       var user = opts.user_name || opts.user;
       opts.maps_api_template = opts.tiler_protocol +
           "://" + ((user) ? "{user}.":"")  +
           opts.tiler_domain +
           ((opts.tiler_port != "") ? (":" + opts.tiler_port) : "");
    },

    _tilerHost: function() {
      var opts = this.options;
      var user = opts.user_name || opts.user;
      return opts.maps_api_template.replace('{user}', user);
    },

    url: function () {
      var opts = this.options;
      var cdn_host = opts.cdn_url;
      var has_empty_cdn = !cdn_host || (cdn_host && (!cdn_host.http && !cdn_host.https));

      if (opts.no_cdn || has_empty_cdn) {
        return this._tilerHost();
      } else {
        var protocol = this.isHttps() ? 'https': 'http';
        var h = protocol + "://";
        if (!this.isHttps()) {
          h += "{s}.";
        }
        var cdn_url = cdn_host[protocol];
        // build default template url if the cdn url is not templatized
        // this is for backwards compatiblity, ideally we should use the url
        // that tiler sends to us right away
        if (!this._isUserTemplateUrl(cdn_url)) {
          cdn_url = cdn_url  + "/{user}";
        }
        var user = opts.user_name || opts.user;
        h += cdn_url.replace('{user}', user)
        return h;
      }

    },

    _isUserTemplateUrl: function(t) {
      return t && t.indexOf('{user}') !== -1;
    },

    isHttps: function() {
      return this.options.maps_api_template.indexOf('https') === 0;
    },

    _generateCartoCSS: function() {
      var attr = {
        '-torque-frame-count': this.options.steps,
        '-torque-resolution': this.options.resolution,
        '-torque-aggregation-function': "'" + this.options.countby + "'",
        '-torque-time-attribute': "'" + this.options.column + "'",
        '-torque-data-aggregation': this.options.cumulative ? 'cumulative': 'linear',
      };
      var st = 'Map{';
      for (var k in attr) {
        st += k + ":" + attr[k] + ";";
      }
      return st + "}";
    },

    _fetchMap: function(callback) {
      var self = this;
      var layergroup = {};
      var host = this.options.dynamic_cdn ? this.url().replace('{s}', '0'): this._tilerHost();
      var url = host + "/api/v1/map";
      var named = this.options.named_map;
      var allParams = {};

      if(named) {
        //tiles/template
        url = host + "/api/v1/map/named/" + named.name + "/jsonp";
        if(typeof named.params !== "undefined"){
          layergroup = named.params;
        }
      } else {
        layergroup = {
          "version": "1.0.1",
          "stat_tag": this.options.stat_tag || 'torque',
          "layers": [{
            "type": "torque",
            "options": {
              "cartocss_version": "1.0.0",
              "cartocss": this._generateCartoCSS(),
              "sql": this.getSQL()
            }
          }]
        };
      }

      if(this.options.stat_tag){
        allParams["stat_tag"] = this.options.stat_tag;
      }

      extra = this._extraParams(allParams);

      // tiler needs map_key instead of api_key
      // so replace it
      if (extra) {
        extra = extra.replace('api_key=', 'map_key=');
      }

      url = url +
        "?config=" + encodeURIComponent(JSON.stringify(layergroup)) +
        "&callback=?" + (extra ? "&" + extra: '');

      var map_instance_time = Profiler.metric('torque.provider.windshaft.layergroup.time').start();
      torque.net.jsonp(url, function (data) {
        map_instance_time.end();
        if (data) {
          if (data.errors){
            self.options.errorCallback && self.options.errorCallback(data.errors);
            return;
          }
          var torque_key = Object.keys(data.metadata.torque)[0]
          var opt = data.metadata.torque[torque_key];
          for(var k in opt) {
            self.options[k] = opt[k];
          }
          // use cdn_url if present
          if (data.cdn_url) {
            var c = self.options.cdn_url = self.options.cdn_url || {};
            c.http = data.cdn_url.http || c.http;
            c.https = data.cdn_url.https || c.https;
          }
          self.templateUrl = self.url() + "/api/v1/map/" + data.layergroupid + "/" + torque_key + "/{z}/{x}/{y}.json.torque";
          self._setReady(true);
        } else {
          Profiler.metric('torque.provider.windshaft.layergroup.error').inc();
        }
      }, { callbackName: self.options.instanciateCallback });
    }

  };

  module.exports = windshaft;

},{"../":11,"../profiler":22}],28:[function(require,module,exports){
  var TAU = Math.PI*2;
  // min value to render a line. 
  // it does not make sense to render a line of a width is not even visible
  var LINEWIDTH_MIN_VALUE = 0.05; 
  var MAX_SPRITE_RADIUS = 255;

  function renderPoint(ctx, st) {
    ctx.fillStyle = st['marker-fill'];
    var pixel_size = st['marker-width'];

    // render a circle
    // TODO: fill and stroke order should depend on the order of the properties
    // in the cartocss.

    // fill
    ctx.beginPath();
    ctx.arc(0, 0, pixel_size, 0, TAU, true, true);
    ctx.closePath();

    if (st['marker-opacity'] !== undefined )  st['marker-fill-opacity'] = st['marker-line-opacity'] = st['marker-opacity'];

    if (st['marker-fill']) {
        ctx.globalAlpha = st['marker-fill-opacity'] >= 0? st['marker-fill-opacity']: 1;

      if (ctx.globalAlpha > 0) {
        ctx.fill();
      }
    }

    // stroke
    if (st['marker-line-color'] && st['marker-line-width'] && st['marker-line-width'] > LINEWIDTH_MIN_VALUE) {
      ctx.globalAlpha = st['marker-line-opacity'] >= 0? st['marker-line-opacity']: 1;
      if (st['marker-line-width'] !== undefined) {
        ctx.lineWidth = st['marker-line-width'];
      }
      ctx.strokeStyle = st['marker-line-color'];

      // do not render for alpha = 0
      if (ctx.globalAlpha > 0) {
        ctx.stroke();
      }
    }
  }

  function renderRectangle(ctx, st) {
    ctx.fillStyle = st['marker-fill'];
    var pixel_size = st['marker-width'];
    var w = pixel_size * 2;

    // fill
    if (st['marker-fill']) {
      if (st['marker-fill-opacity'] !== undefined || st['marker-opacity'] !== undefined) {
        ctx.globalAlpha = st['marker-fill-opacity'] || st['marker-opacity'];
      }
      ctx.fillRect(-pixel_size, -pixel_size, w, w)
    }

    // stroke
    ctx.globalAlpha = 1.0;
    if (st['marker-line-color'] && st['marker-line-width']) {
      if (st['marker-line-opacity']) {
        ctx.globalAlpha = st['marker-line-opacity'];
      }
      if (st['marker-line-width']) {
        ctx.lineWidth = st['marker-line-width'];
      }
      ctx.strokeStyle = st['marker-line-color'];

      // do not render for alpha = 0
      if (ctx.globalAlpha > 0) {
        ctx.strokeRect(-pixel_size, -pixel_size, w, w)
      }
    }
  }

  function renderSprite(ctx, img, st) {

    if(img.complete){
      if (st['marker-fill-opacity'] !== undefined || st['marker-opacity'] !== undefined) {
        ctx.globalAlpha = st['marker-fill-opacity'] || st['marker-opacity'];
      }
      ctx.drawImage(img, 0, 0, Math.min(img.width, MAX_SPRITE_RADIUS), Math.min(img.height, MAX_SPRITE_RADIUS));
    }
  }

module.exports = {
    renderPoint: renderPoint,
    renderSprite: renderSprite,
    renderRectangle: renderRectangle,
    MAX_SPRITE_RADIUS: MAX_SPRITE_RADIUS
};

},{}],29:[function(require,module,exports){
var d3 = require('d3');
var jenks = require('turf-jenks');

function TorqueDataSource (tiles) {
  this.tiles = tiles
}

module.exports = TorqueDataSource

TorqueDataSource.prototype.getName = function () {
  return 'TorqueDataSource'
}

TorqueDataSource.prototype.getRamp = function (column, bins, method, callback) {
  var ramp = []
  var error = null
  var values = Object.keys(this.tiles).map(function (t) {
    return this.tiles[t].renderData;
  }.bind(this)).reduce(function (p,c,i) {
    for(var i = 0; i<c.length; i++) {
      p.push(c[i]);
    }
    return p;
  },[]);
  var extent = d3.extent(values);
  if (!method || method === 'equal' || method === 'jenks') {
    var scale = d3.scale.linear().domain([0, bins]).range(extent)
    ramp = d3.range(bins).map(scale)
  } else if (method === 'quantiles') {
    ramp = d3.scale.quantile().range(d3.range(bins)).domain(values).quantiles()
  } else if (method === 'headstails') {
    var sortedValues = values.sort(function(a, b) {
      return a - b;
    });
    if (sortedValues.length < bins) {
      error = 'Number of bins should be lower than total number of rows'
    } else if (sortedValues.length === bins) {
      ramp = sortedValues;
    } else {
      var mean = d3.mean(sortedValues);
      ramp.push(mean);
      for (var i = 1; i < bins; i++) {
        ramp.push(d3.mean(sortedValues.filter(function (v) {
          return v > ramp[length - 1];
        })));
      }
    }
  } else {
    error = new Error('Quantification method ' + method + ' is not supported')
  }
  callback(error, ramp)
}
},{"d3":79,"turf-jenks":162}],30:[function(require,module,exports){
module.exports = {
    cartocss: require('./cartocss_render'),
    Point: require('./point'),
    Rectangle: require('./rectangle')
};
},{"./cartocss_render":28,"./point":31,"./rectangle":32}],31:[function(require,module,exports){
(function (global){
var torque = require('../');
var cartocss = require('./cartocss_render');
var Profiler = require('../profiler');
var carto = global.carto || require('carto');
var Filters = require('./torque_filters');
var turbocarto = require('turbo-carto');
var CartoDatasource = require('./datasource');

  var ERROR_IMG_URL = 'http://s3.amazonaws.com/com.cartodb.assets.static/error.svg';

  var DEFAULT_CARTOCSS = [
    '#layer {',
    '  marker-fill: #662506;',
    '  marker-width: 4;',
    '  [value > 1] { marker-fill: #FEE391; }',
    '  [value > 2] { marker-fill: #FEC44F; }',
    '  [value > 3] { marker-fill: #FE9929; }',
    '  [value > 4] { marker-fill: #EC7014; }',
    '  [value > 5] { marker-fill: #CC4C02; }',
    '  [value > 6] { marker-fill: #993404; }',
    '  [value > 7] { marker-fill: #662506; }',
    '}'
  ].join('\n');

  var COMP_OP_TO_CANVAS = {
    "difference": "difference",
    "src": 'source-over',
    "exclusion": "exclusion",
    "dst": "destination-in",
    "multiply": "multiply",
    "contrast": "contrast",
    "src-over": 'source-over',
    "screen": "screen",
    "invert": "invert",
    "dst-over": 'destination-over',
    "overlay": "overlay",
    "invert-rgb": "invert",
    "src-in": 'source-in',
    "darken": 'darken',
    "dst-in": 'destination-in',
    "lighten": 'lighten',
    "src-out": 'source-out',
    "color-dodge": "color-dodge",
    "hue":"hue",
    "dst-out": 'destination-out',
    "color-burn":"color-burn",
    "saturation":"saturation",
    "src-atop": 'source-atop',
    "hard-light":"hard-light",
    "color":"color",
    "dst-atop": 'destination-atop',
    "soft-light":"soft-light",
    "xor": 'xor'
  }

  function compop2canvas(compop) {
    return COMP_OP_TO_CANVAS[compop] || compop;
  }

  //
  // this renderer just render points depending of the value
  //
  function PointRenderer(canvas, options) {
    if (!canvas) {
      throw new Error("canvas can't be undefined");
    }
    this.options = options;
    this.layer = options.layer;
    this._canvas = canvas;
    this._ctx = canvas.getContext('2d');
    this._sprites = []; // sprites per layer
    this._shader = null;
    this._icons = {};
    this._iconsToLoad = 0;
    this._filters = new Filters(this._canvas, {canvasClass: options.canvasClass});
    this.style = this.options.cartocss || DEFAULT_CARTOCSS;
    this.setCartoCSS(this.style);
    this.TILE_SIZE = 256;
    this._style = null;
    this._gradients = {};

    this._forcePoints = false;
  }

  torque.extend(PointRenderer.prototype, torque.Event, {

    clearCanvas: function() {
      if (this._Map) {
        var canvas = this._canvas;
        var color = this._Map['-torque-clear-color']
        // shortcut for the default value
        var ctx = this._ctx;
        if (color  === "rgba(255, 255, 255, 0)" || !color) {
          ctx.save();
          ctx.setTransform(1, 0, 0, 1, 0, 0);
          ctx.clearRect(0, 0, canvas.width, canvas.height);
          ctx.restore();
        } else {
          ctx.setTransform(1, 0, 0, 1, 0, 0);
          var compop = this._Map['comp-op']
          ctx.globalCompositeOperation = compop2canvas(compop) || compop;
          ctx.fillStyle = color;
          ctx.fillRect(0, 0, canvas.width, canvas.height);
        }
      }
    },

    setCanvas: function(canvas) {
      this._canvas = canvas;
      this._ctx = canvas.getContext('2d');
    },

    //
    // sets the cartocss style to render stuff
    //
    setCartoCSS: function(cartocss, callback) {
      var self = this;

      this.style = cartocss;

      if (PointRenderer.isTurboCarto(cartocss)) {
        var datasource = new CartoDatasource(self.layer._tiles);
        turbocarto(cartocss, datasource, function (err, parsedCartoCSS) {
          if (err) {
            return callback(err, null);
          }

          self.setShader(new carto.RendererJS().render(parsedCartoCSS));
          self.layer.redraw();
          self.layer.animator.start();
          callback && callback();
        });
      } else {
        self.setShader(new carto.RendererJS().render(cartocss));
        callback && callback();
      }
    },

    setShader: function(shader) {
      // clean sprites
      this._sprites = [];
      this._shader = shader;
      this._Map = this._shader.getDefault().getStyle({}, { zoom: 0 });
      var img_names = this._shader.getImageURLs();
      if (this.layer.showLimitErrors) {
        img_names.push(ERROR_IMG_URL);
      }

      this._preloadIcons(img_names);
    },

    clearSpriteCache: function() {
      this._sprites = [];
    },


    //
    // generate sprite based on cartocss style
    //
    generateSprite: function(shader, value, shaderVars) {
      var self = this;
      var prof = Profiler.metric('torque.renderer.point.generateSprite').start();
      var st = shader.getStyle({
        value: value
      }, shaderVars);
      if(this._style === null || this._style !== st){
        this._style = st;
      }

      var pointSize = st['marker-width'];
      if (!pointSize) {
        return null;
      }

      if (st['marker-opacity'] === 0 && !st['marker-line-opacity']) {
        return null;
      }

      var canvas = this._createCanvas();
      var ctx = canvas.getContext('2d');

      var markerFile = st["marker-file"] || st["point-file"];
      var qualifiedUrl = markerFile && this._qualifyURL(markerFile);

      if (qualifiedUrl && this._iconsToLoad <= 0 && this._icons[qualifiedUrl]) {
        var img = this._icons[qualifiedUrl];

        var dWidth =  Math.min(st['marker-width'] * 2 || img.width, cartocss.MAX_SPRITE_RADIUS * 2);
        var dHeight = Math.min((st['marker-height'] || dWidth) * (img.width / img.height), cartocss.MAX_SPRITE_RADIUS * 2);

        canvas.width = ctx.width = dWidth;
        canvas.height = ctx.height = dHeight;

        ctx.scale(dWidth/img.width, dHeight/img.height);

        cartocss.renderSprite(ctx, img, st);
      } else {
        // take into account the exterior ring to calculate the size
        var canvasSize = (st['marker-line-width'] || 0) + pointSize*2;
        var w = ctx.width = canvas.width = ctx.height = canvas.height = Math.ceil(canvasSize);
        ctx.translate(w/2, w/2);

        var mt = st['marker-type'];
        if (mt && mt === 'rectangle') {
          cartocss.renderRectangle(ctx, st);
        } else {
          cartocss.renderPoint(ctx, st);
        }
      }
      prof.end(true);
      if (torque.flags.sprites_to_images) {
        var i = this._createImage();
        i.src = canvas.toDataURL();
        return i;
      }

      return canvas;
    },

    //
    // renders all the layers (and frames for each layer) from cartocss
    //
    renderTile: function(tile, keys, callback) {
      if (tile && tile.error) {
        this._renderErrorTile(tile);

        return false;
      }

      if (this._iconsToLoad > 0) {
          this.on('allIconsLoaded', function() {
              this.renderTile.apply(this, [tile, keys, callback]);
          });
          return false;
      }

      // convert scalar key to keys array
      if (typeof keys.length === 'undefined') {
        keys = [keys];
      }

      var prof = Profiler.metric('torque.renderer.point.renderLayers').start();
      var layers = this._shader.getLayers();
      for(var i = 0, n = layers.length; i < n; ++i ) {
        var layer = layers[i];
        if (layer.name() !== "Map") {
          var sprites = this._sprites[i] || (this._sprites[i] = {});
          // frames for each layer
          for(var fr = 0; fr < layer.frames().length; ++fr) {
            var frame = layer.frames()[fr];
            var fr_sprites = sprites[frame] || (sprites[frame] = []);
            for (var k = 0, len = keys.length; k < len; k++) {
              this._renderTile(tile, keys[k] - frame, frame, fr_sprites, layer);
            }
          }
        }
      }

      prof.end(true);

      return callback && callback(null);
    },

    _createCanvas: function() {
      return this.options.canvasClass
        ? new this.options.canvasClass()
        : document.createElement('canvas');
    },

    _createImage: function() {
      return this.options.imageClass
        ? new this.options.imageClass()
        : new Image();
    },

    _setImageSrc: function(img, url, callback) {
      if (this.options.setImageSrc) {
        this.options.setImageSrc(img, url, callback);
      } else {
        img.onload = function(){
            callback(null);
        };
        img.onerror = function(){
            callback(new Error('Could not load image'));
        };
        img.src = url;
      }
    },

    _qualifyURL: function(url) {
      if (typeof this.options.qualifyURL !== "undefined"){
        return this.options.qualifyURL(url);
      }
      else{
        var a = document.createElement('a');
        a.href = url;
        return a.href;
      }
    },

    _renderErrorTile: function(tile) {
      if(this.layer.showLimitErrors) {
        var img = this._icons[ERROR_IMG_URL];
        img && this._ctx.drawImage(img, 0, 0, this.TILE_SIZE, this.TILE_SIZE);
      }
    },

    //
    // renders a tile in the canvas for key defined in
    // the torque tile
    //
    _renderTile: function(tile, key, frame_offset, sprites, shader, shaderVars) {
      if (!this._canvas) return;

      var prof = Profiler.metric('torque.renderer.point.renderTile').start();
      var ctx = this._ctx;
      var blendMode = compop2canvas(shader.eval('comp-op')) || this.options.blendmode;
      if (blendMode) {
        ctx.globalCompositeOperation = blendMode;
      }
      if (this.options.cumulative && key > tile.maxDate) {
        //TODO: precache because this tile is not going to change
        key = tile.maxDate;
      }
      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1)
      var activePixels = tile.timeCount[key];
      var anchor = this.options.resolution/2;
      if (activePixels) {
        var pixelIndex = tile.timeIndex[key];
        for(var p = 0; p < activePixels; ++p) {
          var posIdx = tile.renderDataPos[pixelIndex + p];
          var c = tile.renderData[pixelIndex + p];
          if (c) {
           var sp = sprites[c];
           if (sp === undefined) {
             sp = sprites[c] = this.generateSprite(shader, c, torque.extend({ zoom: tile.z, 'frame-offset': frame_offset }, shaderVars));
           }
           if (sp) {
             var x = tile.x[posIdx]- (sp.width >> 1) + anchor;
             var y = tileMax - tile.y[posIdx] + anchor; // flip mercator
             ctx.drawImage(sp, x, y - (sp.height >> 1));
           }
          }
        }
      }


      prof.end(true);
    },

    setBlendMode: function(b) {
      this.options.blendmode = b;
    },

    /**
     * get active points for a step in active zoom
     * returns a list of bounding boxes [[sw, ne] , [], []] where ne is a {lat: .., lon: ...} obj
     * empty list if there is no active pixels
     */
    getActivePointsBBox: function(tile, step) {
      var positions = [];
      var mercator = new torque.Mercator();

      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1);
      //this.renderer.renderTile(tile, this.key, pos.x, pos.y);
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        var c = tile.renderData[pixelIndex + p];
        if (c) {
         var x = tile.x[posIdx];
         var y = tileMax - tile.y[posIdx]; // flip mercator
         positions.push(mercator.tilePixelBBox(
           tile.coord.x,
           tile.coord.y,
           tile.coord.z,
           x, y
         ));
        }
      }
      return positions;
    },

    /**
     * returns an array with all the values for the active pixels
     * @tile tile object
     * @step integer with the step
     * @values (optional) an array where the values will be placed
     */
    getValues: function(tile, step, values) {
      values = values || [];
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        values.push(tile.renderData[pixelIndex + p]);
      }
      return values;
    },

    // return the value for x, y (tile coordinates)
    // null for no value
    getValueFor: function(tile, step, px, py) {
      var mercator = new torque.Mercator();
      var res = this.options.resolution;
      var res2 = res >> 1;

      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1);
      //this.renderer.renderTile(tile, this.key, pos.x, pos.y);
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        var c = tile.renderData[pixelIndex + p];
        if (c) {
         var x = tile.x[posIdx];
         var y = tileMax - tile.y[posIdx];
         var dx = px + res2 - x;
         var dy = py + res2 - y;
         if (dx >= 0 && dx < res && dy >= 0 && dy < res) {
           return {
             value: c,
             bbox: mercator.tilePixelBBox(
               tile.coord.x,
               tile.coord.y,
               tile.coord.z,
               x - res2, y - res2, res
             )
           }
         }
        }
      }
      return null;
    },

    _preloadIcons: function(img_names) {
      var self = this;

      if (img_names.length > 0 && !this._forcePoints) {

        var qualifiedImageUrlSet = Object.keys(img_names.reduce(function(imgNamesMap, imgName) {
            var qualifiedUrl = self._qualifyURL(imgName);
            if (!self._icons[qualifiedUrl]) {
                imgNamesMap[qualifiedUrl] = true;
            }
            return imgNamesMap;
        }, {}));

        var filtered = self._shader.getLayers().some(function(layer) {
          return typeof layer.shader["image-filters"] !== "undefined";
        });

        this._iconsToLoad += qualifiedImageUrlSet.length;

        qualifiedImageUrlSet.forEach(function(qualifiedImageUrl) {
          self._icons[qualifiedImageUrl] = null;

          var img = self._createImage();

          if (filtered) {
            img.crossOrigin = 'Anonymous';
          }

          self._setImageSrc(img, qualifiedImageUrl, function(err) {
            if (err) {
              self._forcePoints = true;
              self.clearSpriteCache();
              self._iconsToLoad = 0;
              self.fire("allIconsLoaded");
              if(filtered) {
                console.info("Only CORS-enabled, or same domain image-files can be used in combination with image-filters");
              }
              console.error("Couldn't get marker-file " + qualifiedImageUrl);
            } else {
              self._icons[qualifiedImageUrl] = img;
              self._iconsToLoad--;

              if (self._iconsToLoad <= 0){
                self.clearSpriteCache();
                self.fire("allIconsLoaded");
              }
            }
          });
        });
      } else {
          this.fire("allIconsLoaded");
      }
    },

    applyFilters: function(){
      if(this._style){
        if(this._style['image-filters']){
          function gradientKey(imf){
            var hash = ""
            for(var i = 0; i < imf.args.length; i++){
              var rgb = imf.args[i].rgb;
              hash += rgb[0] + ":" + rgb[1] + ":" + rgb[2];
            }
            return hash;
          }
          var gradient = this._gradients[gradientKey(this._style['image-filters'])];
          if(!gradient){
            function componentToHex(c) {
              var hex = c.toString(16);
              return hex.length == 1 ? "0" + hex : hex;
            }

            function rgbToHex(r, g, b) {
              return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
            }
            gradient = {};
            var colorize = this._style['image-filters'].args;

            var increment = 1/colorize.length;
            for (var i = 0; i < colorize.length; i++){
              var key = increment * i + increment;
              var rgb = colorize[i].rgb;
              var formattedColor = rgbToHex(rgb[0], rgb[1], rgb[2]);
              gradient[key] = formattedColor;
            }
            this._gradients[gradientKey(this._style['image-filters'])] = gradient;
          }
          this._filters.gradient(gradient);
          this._filters.draw();
        }
      }
    }
  });

PointRenderer.isTurboCarto = function (cartocss) {
  var reservedWords = ['ramp', 'colorbrewer', 'buckets']
  var isTurbo = reservedWords
    .map(function (w) {
      return w + '('
    })
    .map(String.prototype.indexOf.bind(cartocss))
    .every(function (f) { return f === -1 })
  return !isTurbo
}


  // exports public api
module.exports = PointRenderer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"../profiler":22,"./cartocss_render":28,"./datasource":29,"./torque_filters":33,"carto":40,"turbo-carto":153}],32:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');

  var DEFAULT_CARTOCSS = [
    '#layer {',
    '  polygon-fill: #FFFF00;',
    '  [value > 10] { polygon-fill: #FFFF00; }',
    '  [value > 100] { polygon-fill: #FFCC00; }',
    '  [value > 1000] { polygon-fill: #FE9929; }',
    '  [value > 10000] { polygon-fill: #FF6600; }',
    '  [value > 100000] { polygon-fill: #FF3300; }',
    '}'
  ].join('\n');

  var TAU = Math.PI * 2;

  //
  // this renderer just render points depending of the value
  // 
  function RectanbleRenderer(canvas, options) {
    this.options = options;
    carto.tree.Reference.set(torque['torque-reference']);
    this.setCanvas(canvas);
    this.setCartoCSS(this.options.cartocss || DEFAULT_CARTOCSS);
  }

  RectanbleRenderer.prototype = {

    //
    // sets the cartocss style to render stuff
    //
    setCartoCSS: function(cartocss) {
      this._cartoCssStyle = new carto.RendererJS().render(cartocss);
      if(this._cartoCssStyle.getLayers().length > 1) {
        throw new Error("only one CartoCSS layer is supported");
      }
      this._shader = this._cartoCssStyle.getLayers()[0].shader;
    },

    setCanvas: function(canvas) {
      if(!canvas) return;
      this._canvas = canvas;
      this._ctx = canvas.getContext('2d');
    },

    accumulate: function(tile, keys) {
      var prof = Profiler.metric('RectangleRender:accumulate').start();
      var x, y, posIdx, p, k, key, activePixels, pixelIndex;
      var res = this.options.resolution;
      var s = 256/res;
      var accum = new Float32Array(s*s);

      if(typeof(keys) !== 'object') {
        keys = [keys];
      }

      for(k = 0; k < keys.length; ++k) {
        key = keys[k];
        activePixels = tile.timeCount[key];
        if(activePixels) {
          pixelIndex = tile.timeIndex[key];
          for(p = 0; p < activePixels; ++p) {
            posIdx = tile.renderDataPos[pixelIndex + p];
            x = tile.x[posIdx]/res;
            y = tile.y[posIdx]/res;
            accum[x*s + y] += tile.renderData[pixelIndex + p];
          }
        }
      }

      prof.end();
      return accum;
    },

    renderTileAccum: function(accum, px, py) {
      var prof = Profiler.metric('RectangleRender:renderTileAccum').start();
      var color, x, y, alpha;
      var res = this.options.resolution;
      var ctx = this._ctx;
      var s = (256/res) | 0;
      var s2 = s*s;
      var colors = this._colors;
      if(this.options.blendmode) {
        ctx.globalCompositeOperation = this.options.blendmode;
      }
      var polygon_alpha = this._shader['polygon-opacity'] || function() { return 1.0; };
      for(var i = 0; i < s2; ++i) {
        var xy = i;
        var value = accum[i];
        if(value) {
          x = (xy/s) | 0;
          y = xy % s;
          // by-pass the style generation for improving performance
          color = this._shader['polygon-fill']({ value: value }, { zoom: 0 });
          ctx.fillStyle = color;
          //TODO: each function should have a default value for each 
          //property defined in the cartocss
          alpha = polygon_alpha({ value: value }, { zoom: 0 });
          if(alpha === null) {
            alpha = 1.0;
          }
          ctx.globalAlpha = alpha;
          ctx.fillRect(x * res, 256 - res - y * res, res, res);
        }
      }
      prof.end();
    },

    //
    // renders a tile in the canvas for key defined in 
    // the torque tile
    //
    renderTile: function(tile, key, callback) {
      if(!this._canvas) return;

      var res = this.options.resolution;

      //var prof = Profiler.get('render').start();
      var ctx = this._ctx;
      var colors = this._colors;
      var activepixels = tile.timeCount[key];
      if(activepixels) {
        var w = this._canvas.width;
        var h = this._canvas.height;
        //var imageData = ctx.getImageData(0, 0, w, h);
        //var pixels = imageData.data;
        var pixelIndex = tile.timeIndex[key];
        for(var p = 0; p < activePixels; ++p) {
          var posIdx = tile.renderDataPos[pixelIndex + p];
          var c = tile.renderData[pixelIndex + p];
          if(c) {
           var color = colors[Math.min(c, colors.length - 1)];
           var x = tile.x[posIdx];// + px;
           var y = tile.y[posIdx]; //+ py;

           ctx.fillStyle = color;
           ctx.fillRect(x, y, res, res);
           /*

           for(var xx = 0; xx < res; ++xx) {
            for(var yy = 0; yy < res; ++yy) {
              var idx = 4*((x+xx) + w*(y + yy));
              pixels[idx + 0] = color[0];
              pixels[idx + 1] = color[1];
              pixels[idx + 2] = color[2];
              pixels[idx + 3] = color[3];
            }
           }
           */
          }
        }
        //ctx.putImageData(imageData, 0, 0);
      }
      //prof.end();
      return callback && callback(null);
    }
  };


  // exports public api
module.exports = RectanbleRenderer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"carto":40}],33:[function(require,module,exports){
/*
 Based on simpleheat, a tiny JavaScript library for drawing heatmaps with Canvas, 
 by Vladimir Agafonkin
 https://github.com/mourner/simpleheat
*/

'use strict';

function torque_filters(canvas, options) {
    // jshint newcap: false, validthis: true
    if (!(this instanceof torque_filters)) { return new torque_filters(canvas, options); }

    options = options || {};

    this._canvas = canvas = typeof canvas === 'string' ? document.getElementById(canvas) : canvas;

    this._ctx = canvas.getContext('2d');
    this._width = canvas.width;
    this._height = canvas.height;

    this._max = 1;
    this._data = [];

    this.canvasClass = options.canvasClass;
}

torque_filters.prototype = {

    defaultGradient: {
        0.4: 'blue',
        0.6: 'cyan',
        0.7: 'lime',
        0.8: 'yellow',
        1.0: 'red'
    },

    gradient: function (grad) {
        // create a 256x1 gradient that we'll use to turn a grayscale heatmap into a colored one
        var canvas = this._createCanvas(),
            ctx = canvas.getContext('2d'),
            gradient = ctx.createLinearGradient(0, 0, 0, 256);

        canvas.width = 1;
        canvas.height = 256;

        for (var i in grad) {
            gradient.addColorStop(+i, grad[i]);
        }

        ctx.fillStyle = gradient;
        ctx.fillRect(0, 0, 1, 256);

        this._grad = ctx.getImageData(0, 0, 1, 256).data;

        return this;
    },

    draw: function () {
        if (!this._grad) {
            this.gradient(this.defaultGradient);
        }

        var ctx = this._ctx;
        var colored = ctx.getImageData(0, 0, this._canvas.width, this._canvas.height);
        this._colorize(colored.data, this._grad);
        ctx.putImageData(colored, 0, 0);

        return this;
    },

    _colorize: function (pixels, gradient) {
        for (var i = 3, len = pixels.length, j; i < len; i += 4) {
            j = pixels[i] * 4; // get gradient color from opacity value

            if (j) {
                pixels[i - 3] = gradient[j];
                pixels[i - 2] = gradient[j + 1];
                pixels[i - 1] = gradient[j + 2];
            }
        }
    },

    _createCanvas: function() {
        return this.canvasClass
            ? new this.canvasClass()
            : document.createElement('canvas');
    }
};

module.exports = torque_filters;

},{}],34:[function(require,module,exports){
(function (global){
var torque = require('./core');

  var lastCall = null;

  function jsonp(url, callback, options) {
     options = options || {};
     options.timeout = options.timeout === undefined ? 10000: options.timeout;
     var head = document.getElementsByTagName('head')[0];
     var script = document.createElement('script');

     // function name
     var fnName = options.callbackName || 'torque_' + Date.now();

     if (torque.isFunction(fnName)) {
       fnName = fnName();
     }

     function clean() {
       head.removeChild(script);
       clearTimeout(timeoutTimer);
       delete window[fnName];
     }

     window[fnName] = function() {
       clean();
       callback.apply(window, arguments);
     };

     // timeout for errors
     var timeoutTimer = setTimeout(function() {
       clean();
       callback.call(window, null);
     }, options.timeout);

     // setup url
     url = url.replace('callback=\?', 'callback=' + fnName);
     script.type = 'text/javascript';
     script.src = url;
     script.async = true;
     // defer the loading because IE9 loads in the same frame the script
     // so Loader._script is null
     setTimeout(function() { head.appendChild(script); }, 0);
  }

  function get(url, callback, options) {
    options = options || {
      method: 'GET',
      data: null,
      responseType: 'text'
    };
    lastCall = { url: url, callback: callback };
    var request = XMLHttpRequest;
    // from d3.js
    if (global.XDomainRequest
        && !("withCredentials" in request)
        && /^(http(s)?:)?\/\//.test(url)) request = XDomainRequest;

    var req = new request();
    req.open(options.method, url, true);


    function respond() {
      var status = req.status, result;
      var r = options.responseType === 'arraybuffer' ? req.response: req.responseText;
      if (!status && r || status >= 200 && status < 300 || status === 304 || status === 429) {
        callback(req);
      } else {
        callback(null);
      }
    }

    "onload" in req
      ? req.onload = req.onerror = respond
      : req.onreadystatechange = function() { req.readyState > 3 && respond(); };

    req.onprogress = function() {};

    req.responseType = options.responseType; //'arraybuffer';
    if (options.data) {
      req.setRequestHeader("Content-type", "application/json");
      //req.setRequestHeader("Content-type", "application/x-www-form-urlencoded")
      req.setRequestHeader("Accept", "*");
    }
    req.send(options.data);
    return req;
  }

  function post(url, data, callback) {
    return get(url, callback, {
      data: data,
      method: "POST"
    });
  }

module.exports = {
    get: get,
    post: post,
    jsonp: jsonp,
    lastCall: function() { return lastCall; }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./core":5}],35:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && (isNaN(value) || !isFinite(value))) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  //~~~I've managed to break Object.keys through screwy arguments passing.
  //   Converting to array solves the problem.
  if (isArguments(a)) {
    if (!isArguments(b)) {
      return false;
    }
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  try {
    var ka = objectKeys(a),
        kb = objectKeys(b),
        key, i;
  } catch (e) {//happens when one is a string literal and the other isn't
    return false;
  }
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{"util/":166}],36:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

;(function (exports) {
	'use strict';

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

	var PLUS   = '+'.charCodeAt(0)
	var SLASH  = '/'.charCodeAt(0)
	var NUMBER = '0'.charCodeAt(0)
	var LOWER  = 'a'.charCodeAt(0)
	var UPPER  = 'A'.charCodeAt(0)

	function decode (elt) {
		var code = elt.charCodeAt(0)
		if (code === PLUS)
			return 62 // '+'
		if (code === SLASH)
			return 63 // '/'
		if (code < NUMBER)
			return -1 //no match
		if (code < NUMBER + 10)
			return code - NUMBER + 26 + 26
		if (code < UPPER + 26)
			return code - UPPER
		if (code < LOWER + 26)
			return code - LOWER + 26
	}

	function b64ToByteArray (b64) {
		var i, j, l, tmp, placeHolders, arr

		if (b64.length % 4 > 0) {
			throw new Error('Invalid string. Length must be a multiple of 4')
		}

		// the number of equal signs (place holders)
		// if there are two placeholders, than the two characters before it
		// represent one byte
		// if there is only one, then the three characters before it represent 2 bytes
		// this is just a cheap hack to not do indexOf twice
		var len = b64.length
		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0

		// base64 is 4/3 + up to two characters of the original data
		arr = new Arr(b64.length * 3 / 4 - placeHolders)

		// if there are placeholders, only get up to the last complete 4 chars
		l = placeHolders > 0 ? b64.length - 4 : b64.length

		var L = 0

		function push (v) {
			arr[L++] = v
		}

		for (i = 0, j = 0; i < l; i += 4, j += 3) {
			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
			push((tmp & 0xFF0000) >> 16)
			push((tmp & 0xFF00) >> 8)
			push(tmp & 0xFF)
		}

		if (placeHolders === 2) {
			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
			push(tmp & 0xFF)
		} else if (placeHolders === 1) {
			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
			push((tmp >> 8) & 0xFF)
			push(tmp & 0xFF)
		}

		return arr
	}

	function uint8ToBase64 (uint8) {
		var i,
			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
			output = "",
			temp, length

		function encode (num) {
			return lookup.charAt(num)
		}

		function tripletToBase64 (num) {
			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
		}

		// go through the array every three bytes, we'll deal with trailing stuff later
		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
			output += tripletToBase64(temp)
		}

		// pad the end with zeros, but make sure to not forget the extra bytes
		switch (extraBytes) {
			case 1:
				temp = uint8[uint8.length - 1]
				output += encode(temp >> 2)
				output += encode((temp << 4) & 0x3F)
				output += '=='
				break
			case 2:
				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
				output += encode(temp >> 10)
				output += encode((temp >> 4) & 0x3F)
				output += encode((temp << 2) & 0x3F)
				output += '='
				break
		}

		return output
	}

	exports.toByteArray = b64ToByteArray
	exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

},{}],37:[function(require,module,exports){

},{}],38:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('is-array')

exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation

var kMaxLength = 0x3fffffff

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Note:
 *
 * - Implementation must support adding new properties to `Uint8Array` instances.
 *   Firefox 4-29 lacked support, fixed in Firefox 30+.
 *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *    incorrect length in some situations.
 *
 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
 * get the Object implementation, which is slower but will work correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = (function () {
  try {
    var buf = new ArrayBuffer(0)
    var arr = new Uint8Array(buf)
    arr.foo = function () { return 42 }
    return 42 === arr.foo() && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
})()

/**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
function Buffer (subject, encoding, noZero) {
  if (!(this instanceof Buffer))
    return new Buffer(subject, encoding, noZero)

  var type = typeof subject

  // Find the length
  var length
  if (type === 'number')
    length = subject > 0 ? subject >>> 0 : 0
  else if (type === 'string') {
    if (encoding === 'base64')
      subject = base64clean(subject)
    length = Buffer.byteLength(subject, encoding)
  } else if (type === 'object' && subject !== null) { // assume object is array-like
    if (subject.type === 'Buffer' && isArray(subject.data))
      subject = subject.data
    length = +subject.length > 0 ? Math.floor(+subject.length) : 0
  } else
    throw new TypeError('must start with number, buffer, array or string')

  if (this.length > kMaxLength)
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
      'size: 0x' + kMaxLength.toString(16) + ' bytes')

  var buf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Preferred: Return an augmented `Uint8Array` instance for best performance
    buf = Buffer._augment(new Uint8Array(length))
  } else {
    // Fallback: Return THIS instance of Buffer (created by `new`)
    buf = this
    buf.length = length
    buf._isBuffer = true
  }

  var i
  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
    // Speed optimization -- use set if we're copying from a typed array
    buf._set(subject)
  } else if (isArrayish(subject)) {
    // Treat array-ish objects as a byte array
    if (Buffer.isBuffer(subject)) {
      for (i = 0; i < length; i++)
        buf[i] = subject.readUInt8(i)
    } else {
      for (i = 0; i < length; i++)
        buf[i] = ((subject[i] % 256) + 256) % 256
    }
  } else if (type === 'string') {
    buf.write(subject, 0, encoding)
  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
    for (i = 0; i < length; i++) {
      buf[i] = 0
    }
  }

  return buf
}

Buffer.isBuffer = function (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
    throw new TypeError('Arguments must be Buffers')

  var x = a.length
  var y = b.length
  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
  if (i !== len) {
    x = a[i]
    y = b[i]
  }
  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'raw':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function (list, totalLength) {
  if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')

  if (list.length === 0) {
    return new Buffer(0)
  } else if (list.length === 1) {
    return list[0]
  }

  var i
  if (totalLength === undefined) {
    totalLength = 0
    for (i = 0; i < list.length; i++) {
      totalLength += list[i].length
    }
  }

  var buf = new Buffer(totalLength)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
}

Buffer.byteLength = function (str, encoding) {
  var ret
  str = str + ''
  switch (encoding || 'utf8') {
    case 'ascii':
    case 'binary':
    case 'raw':
      ret = str.length
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = str.length * 2
      break
    case 'hex':
      ret = str.length >>> 1
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8ToBytes(str).length
      break
    case 'base64':
      ret = base64ToBytes(str).length
      break
    default:
      ret = str.length
  }
  return ret
}

// pre-set for values that may exist in the future
Buffer.prototype.length = undefined
Buffer.prototype.parent = undefined

// toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function (encoding, start, end) {
  var loweredCase = false

  start = start >>> 0
  end = end === undefined || end === Infinity ? this.length : end >>> 0

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'binary':
        return binarySlice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase)
          throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.equals = function (b) {
  if(!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max)
      str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b)
}

// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
  console.log('.get() is deprecated. Access using array indexes instead.')
  return this.readUInt8(offset)
}

// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
  console.log('.set() is deprecated. Access using array indexes instead.')
  return this.writeUInt8(v, offset)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var byte = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(byte)) throw new Error('Invalid hex string')
    buf[offset + i] = byte
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf8ToBytes(string), buf, offset, length)
  return charsWritten
}

function asciiWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
  return charsWritten
}

function binaryWrite (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
  return charsWritten
}

function utf16leWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf16leToBytes(string), buf, offset, length, 2)
  return charsWritten
}

Buffer.prototype.write = function (string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length
      length = undefined
    }
  } else {  // legacy
    var swap = encoding
    encoding = offset
    offset = length
    length = swap
  }

  offset = Number(offset) || 0
  var remaining = this.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase()

  var ret
  switch (encoding) {
    case 'hex':
      ret = hexWrite(this, string, offset, length)
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8Write(this, string, offset, length)
      break
    case 'ascii':
      ret = asciiWrite(this, string, offset, length)
      break
    case 'binary':
      ret = binaryWrite(this, string, offset, length)
      break
    case 'base64':
      ret = base64Write(this, string, offset, length)
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = utf16leWrite(this, string, offset, length)
      break
    default:
      throw new TypeError('Unknown encoding: ' + encoding)
  }
  return ret
}

Buffer.prototype.toJSON = function () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  var res = ''
  var tmp = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    if (buf[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
      tmp = ''
    } else {
      tmp += '%' + buf[i].toString(16)
    }
  }

  return res + decodeUtf8Char(tmp)
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function binarySlice (buf, start, end) {
  return asciiSlice(buf, start, end)
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; i++) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len;
    if (start < 0)
      start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0)
      end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start)
    end = start

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    return Buffer._augment(this.subarray(start, end))
  } else {
    var sliceLen = end - start
    var newBuf = new Buffer(sliceLen, undefined, true)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
    return newBuf
  }
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0)
    throw new RangeError('offset is not uint')
  if (offset + ext > length)
    throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
}

Buffer.prototype.readInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80))
    return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
}

Buffer.prototype.readFloatLE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
}

Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = value
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = value
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = value
  return offset + 1
}

Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert)
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert)
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
  var source = this

  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (!target_start) target_start = 0

  // Copy 0 bytes; we're done
  if (end === start) return
  if (target.length === 0 || source.length === 0) return

  // Fatal error conditions
  if (end < start) throw new TypeError('sourceEnd < sourceStart')
  if (target_start < 0 || target_start >= target.length)
    throw new TypeError('targetStart out of bounds')
  if (start < 0 || start >= source.length) throw new TypeError('sourceStart out of bounds')
  if (end < 0 || end > source.length) throw new TypeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length)
    end = this.length
  if (target.length - target_start < end - start)
    end = target.length - target_start + start

  var len = end - start

  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < len; i++) {
      target[i + target_start] = this[i + start]
    }
  } else {
    target._set(this.subarray(start, start + len), target_start)
  }
}

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new TypeError('end < start')

  // Fill 0 bytes; we're done
  if (end === start) return
  if (this.length === 0) return

  if (start < 0 || start >= this.length) throw new TypeError('start out of bounds')
  if (end < 0 || end > this.length) throw new TypeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
}

/**
 * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
 * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
 */
Buffer.prototype.toArrayBuffer = function () {
  if (typeof Uint8Array !== 'undefined') {
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      return (new Buffer(this)).buffer
    } else {
      var buf = new Uint8Array(this.length)
      for (var i = 0, len = buf.length; i < len; i += 1) {
        buf[i] = this[i]
      }
      return buf.buffer
    }
  } else {
    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
  }
}

// HELPER FUNCTIONS
// ================

var BP = Buffer.prototype

/**
 * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
 */
Buffer._augment = function (arr) {
  arr.constructor = Buffer
  arr._isBuffer = true

  // save reference to original Uint8Array get/set methods before overwriting
  arr._get = arr.get
  arr._set = arr.set

  // deprecated, will be removed in node 0.13+
  arr.get = BP.get
  arr.set = BP.set

  arr.write = BP.write
  arr.toString = BP.toString
  arr.toLocaleString = BP.toString
  arr.toJSON = BP.toJSON
  arr.equals = BP.equals
  arr.compare = BP.compare
  arr.copy = BP.copy
  arr.slice = BP.slice
  arr.readUInt8 = BP.readUInt8
  arr.readUInt16LE = BP.readUInt16LE
  arr.readUInt16BE = BP.readUInt16BE
  arr.readUInt32LE = BP.readUInt32LE
  arr.readUInt32BE = BP.readUInt32BE
  arr.readInt8 = BP.readInt8
  arr.readInt16LE = BP.readInt16LE
  arr.readInt16BE = BP.readInt16BE
  arr.readInt32LE = BP.readInt32LE
  arr.readInt32BE = BP.readInt32BE
  arr.readFloatLE = BP.readFloatLE
  arr.readFloatBE = BP.readFloatBE
  arr.readDoubleLE = BP.readDoubleLE
  arr.readDoubleBE = BP.readDoubleBE
  arr.writeUInt8 = BP.writeUInt8
  arr.writeUInt16LE = BP.writeUInt16LE
  arr.writeUInt16BE = BP.writeUInt16BE
  arr.writeUInt32LE = BP.writeUInt32LE
  arr.writeUInt32BE = BP.writeUInt32BE
  arr.writeInt8 = BP.writeInt8
  arr.writeInt16LE = BP.writeInt16LE
  arr.writeInt16BE = BP.writeInt16BE
  arr.writeInt32LE = BP.writeInt32LE
  arr.writeInt32BE = BP.writeInt32BE
  arr.writeFloatLE = BP.writeFloatLE
  arr.writeFloatBE = BP.writeFloatBE
  arr.writeDoubleLE = BP.writeDoubleLE
  arr.writeDoubleBE = BP.writeDoubleBE
  arr.fill = BP.fill
  arr.inspect = BP.inspect
  arr.toArrayBuffer = BP.toArrayBuffer

  return arr
}

var INVALID_BASE64_RE = /[^+\/0-9A-z]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function isArrayish (subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
      subject && typeof subject === 'object' &&
      typeof subject.length === 'number'
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    var b = str.charCodeAt(i)
    if (b <= 0x7F) {
      byteArray.push(b)
    } else {
      var start = i
      if (b >= 0xD800 && b <= 0xDFFF) i++
      var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
      for (var j = 0; j < h.length; j++) {
        byteArray.push(parseInt(h[j], 16))
      }
    }
  }
  return byteArray
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(str)
}

function blitBuffer (src, dst, offset, length, unitSize) {
  if (unitSize) length -= length % unitSize;
  for (var i = 0; i < length; i++) {
    if ((i + offset >= dst.length) || (i >= src.length))
      break
    dst[i + offset] = src[i]
  }
  return i
}

function decodeUtf8Char (str) {
  try {
    return decodeURIComponent(str)
  } catch (err) {
    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
  }
}

},{"base64-js":36,"ieee754":83,"is-array":84}],39:[function(require,module,exports){
(function (tree) {

tree.functions = {
    rgb: function (r, g, b) {
        return this.rgba(r, g, b, 1.0);
    },
    rgba: function (r, g, b, a) {
        var rgb = [r, g, b].map(function (c) { return number(c); });
        a = number(a);
        if (rgb.some(isNaN) || isNaN(a)) return null;
        return new tree.Color(rgb, a);
    },
    // Only require val
    stop: function (val) {
        var color, mode;
        if (arguments.length > 1) color = arguments[1];
        if (arguments.length > 2) mode = arguments[2];

        return {
            is: 'tag',
            val: val,
            color: color,
            mode: mode,
            toString: function(env) {
                return '\n\t<stop value="' + val.ev(env) + '"' +
                    (color ? ' color="' + color.ev(env) + '" ' : '') +
                    (mode ? ' mode="' + mode.ev(env) + '" ' : '') +
                    '/>';
            }
        };
    },
    hsl: function (h, s, l) {
        return this.hsla(h, s, l, 1.0);
    },
    hsla: function (h, s, l, a) {
        h = (number(h) % 360) / 360;
        s = number(s); l = number(l); a = number(a);
        if ([h, s, l, a].some(isNaN)) return null;

        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s,
            m1 = l * 2 - m2;

        return this.rgba(hue(h + 1/3) * 255,
                         hue(h)       * 255,
                         hue(h - 1/3) * 255,
                         a);

        function hue(h) {
            h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h);
            if      (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
            else if (h * 2 < 1) return m2;
            else if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
            else                return m1;
        }
    },
    hue: function (color) {
        if (!('toHSL' in color)) return null;
        return new tree.Dimension(Math.round(color.toHSL().h));
    },
    saturation: function (color) {
        if (!('toHSL' in color)) return null;
        return new tree.Dimension(Math.round(color.toHSL().s * 100), '%');
    },
    lightness: function (color) {
        if (!('toHSL' in color)) return null;
        return new tree.Dimension(Math.round(color.toHSL().l * 100), '%');
    },
    alpha: function (color) {
        if (!('toHSL' in color)) return null;
        return new tree.Dimension(color.toHSL().a);
    },
    saturate: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.s += amount.value / 100;
        hsl.s = clamp(hsl.s);
        return hsla(hsl);
    },
    desaturate: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.s -= amount.value / 100;
        hsl.s = clamp(hsl.s);
        return hsla(hsl);
    },
    lighten: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.l += amount.value / 100;
        hsl.l = clamp(hsl.l);
        return hsla(hsl);
    },
    darken: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.l -= amount.value / 100;
        hsl.l = clamp(hsl.l);
        return hsla(hsl);
    },
    fadein: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.a += amount.value / 100;
        hsl.a = clamp(hsl.a);
        return hsla(hsl);
    },
    fadeout: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();

        hsl.a -= amount.value / 100;
        hsl.a = clamp(hsl.a);
        return hsla(hsl);
    },
    spin: function (color, amount) {
        if (!('toHSL' in color)) return null;
        var hsl = color.toHSL();
        var hue = (hsl.h + amount.value) % 360;

        hsl.h = hue < 0 ? 360 + hue : hue;

        return hsla(hsl);
    },
    replace: function (entity, a, b) {
        if (entity.is === 'field') {
            return entity.toString + '.replace(' + a.toString() + ', ' + b.toString() + ')';
        } else {
            return entity.replace(a, b);
        }
    },
    //
    // Copyright (c) 2006-2009 Hampton Catlin, Nathan Weizenbaum, and Chris Eppstein
    // http://sass-lang.com
    //
    mix: function (color1, color2, weight) {
        var p = weight.value / 100.0;
        var w = p * 2 - 1;
        var a = color1.toHSL().a - color2.toHSL().a;

        var w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
        var w2 = 1 - w1;

        var rgb = [color1.rgb[0] * w1 + color2.rgb[0] * w2,
                   color1.rgb[1] * w1 + color2.rgb[1] * w2,
                   color1.rgb[2] * w1 + color2.rgb[2] * w2];

        var alpha = color1.alpha * p + color2.alpha * (1 - p);

        return new tree.Color(rgb, alpha);
    },
    greyscale: function (color) {
        return this.desaturate(color, new tree.Dimension(100));
    },
    '%': function (quoted /* arg, arg, ...*/) {
        var args = Array.prototype.slice.call(arguments, 1),
            str = quoted.value;

        for (var i = 0; i < args.length; i++) {
            str = str.replace(/%s/,    args[i].value)
                     .replace(/%[da]/, args[i].toString());
        }
        str = str.replace(/%%/g, '%');
        return new tree.Quoted(str);
    }
};

var image_filter_functors = [
    'emboss', 'blur', 'gray', 'sobel', 'edge-detect',
    'x-gradient', 'y-gradient', 'sharpen'];

for (var i = 0; i < image_filter_functors.length; i++) {
    var f = image_filter_functors[i];
    tree.functions[f] = (function(f) {
        return function() {
            return new tree.ImageFilter(f);
        };
    })(f);
}

tree.functions['agg-stack-blur'] = function(x, y) {
    return new tree.ImageFilter('agg-stack-blur', [x, y]);
};

tree.functions['scale-hsla'] = function(h0,h1,s0,s1,l0,l1,a0,a1) {
    return new tree.ImageFilter('scale-hsla', [h0,h1,s0,s1,l0,l1,a0,a1]);
};

function hsla(h) {
    return tree.functions.hsla(h.h, h.s, h.l, h.a);
}

function number(n) {
    if (n instanceof tree.Dimension) {
        return parseFloat(n.unit == '%' ? n.value / 100 : n.value);
    } else if (typeof(n) === 'number') {
        return n;
    } else {
        return NaN;
    }
}

function clamp(val) {
    return Math.min(1, Math.max(0, val));
}

})(require('./tree'));

},{"./tree":45}],40:[function(require,module,exports){
(function (process,__dirname){
var util = require('util'),
    fs = require('fs'),
    path = require('path');


function getVersion() {
    if (process.browser) {
        return require('../../package.json').version.split('.');
    } else if (parseInt(process.version.split('.')[1], 10) > 4) {
        return require('../../package.json').version.split('.');
    } else {
        // older node
        var package_json = JSON.parse(fs.readFileSync(path.join(__dirname,'../../package.json')));
        return package_json.version.split('.');
    }
}

var carto = {
    version: getVersion(),
    Parser: require('./parser').Parser,
    Renderer: require('./renderer').Renderer,
    tree: require('./tree'),
    RendererJS: require('./renderer_js'),
    default_reference: require('./torque-reference'),

    // @TODO
    writeError: function(ctx, options) {
        var message = '';
        var extract = ctx.extract;
        var error = [];

        options = options || {};

        if (options.silent) { return; }

        options.indent = options.indent || '';

        if (!('index' in ctx) || !extract) {
            return util.error(options.indent + (ctx.stack || ctx.message));
        }

        if (typeof(extract[0]) === 'string') {
            error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
        }

        if (extract[1] === '' && typeof extract[2] === 'undefined') {
            extract[1] = '¶';
        }
        error.push(ctx.line + ' ' + extract[1].slice(0, ctx.column) +
            stylize(stylize(extract[1][ctx.column], 'bold') +
            extract[1].slice(ctx.column + 1), 'yellow'));

        if (typeof(extract[2]) === 'string') {
            error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
        }
        error = options.indent + error.join('\n' + options.indent) + '\x1B[0m\n';

        message = options.indent + message + stylize(ctx.message, 'red');
        if (ctx.filename) (message += stylize(' in ', 'red') + ctx.filename);

        util.error(message, error);

        if (ctx.callLine) {
            util.error(stylize('from ', 'red') + (ctx.filename || ''));
            util.error(stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract);
        }
        if (ctx.stack) { util.error(stylize(ctx.stack, 'red')); }
    }
};

require('./tree/call');
require('./tree/color');
require('./tree/comment');
require('./tree/definition');
require('./tree/dimension');
require('./tree/element');
require('./tree/expression');
require('./tree/filterset');
require('./tree/filter');
require('./tree/field');
require('./tree/keyword');
require('./tree/layer');
require('./tree/literal');
require('./tree/operation');
require('./tree/quoted');
require('./tree/imagefilter');
require('./tree/reference');
require('./tree/rule');
require('./tree/ruleset');
require('./tree/selector');
require('./tree/style');
require('./tree/url');
require('./tree/value');
require('./tree/variable');
require('./tree/zoom');
require('./tree/invalid');
require('./tree/fontset');
require('./tree/frame_offset');
require('./functions');

for (var k in carto) { exports[k] = carto[k]; }

// Stylize a string
function stylize(str, style) {
    var styles = {
        'bold' : [1, 22],
        'inverse' : [7, 27],
        'underline' : [4, 24],
        'yellow' : [33, 39],
        'green' : [32, 39],
        'red' : [31, 39],
        'grey' : [90, 39]
    };
    return '\x1B[' + styles[style][0] + 'm' + str +
           '\x1B[' + styles[style][1] + 'm';
}

}).call(this,require('_process'),"/node_modules/carto/lib/carto")
},{"../../package.json":74,"./functions":39,"./parser":41,"./renderer":42,"./renderer_js":43,"./torque-reference":44,"./tree":45,"./tree/call":46,"./tree/color":47,"./tree/comment":48,"./tree/definition":49,"./tree/dimension":50,"./tree/element":51,"./tree/expression":52,"./tree/field":53,"./tree/filter":54,"./tree/filterset":55,"./tree/fontset":56,"./tree/frame_offset":57,"./tree/imagefilter":58,"./tree/invalid":59,"./tree/keyword":60,"./tree/layer":61,"./tree/literal":62,"./tree/operation":63,"./tree/quoted":64,"./tree/reference":65,"./tree/rule":66,"./tree/ruleset":67,"./tree/selector":68,"./tree/style":69,"./tree/url":70,"./tree/value":71,"./tree/variable":72,"./tree/zoom":73,"_process":118,"fs":37,"path":88,"util":166}],41:[function(require,module,exports){
(function (global){
var carto = exports,
    tree = require('./tree'),
    _ = global._ || require('underscore');

//    Token matching is done with the `$` function, which either takes
//    a terminal string or regexp, or a non-terminal function to call.
//    It also takes care of moving all the indices forwards.
carto.Parser = function Parser(env) {
    var input,       // LeSS input string
        i,           // current index in `input`
        j,           // current chunk
        temp,        // temporarily holds a chunk's state, for backtracking
        memo,        // temporarily holds `i`, when backtracking
        furthest,    // furthest index the parser has gone to
        chunks,      // chunkified input
        current,     // index of current chunk, in `input`
        parser;

    var that = this;

    // This function is called after all files
    // have been imported through `@import`.
    var finish = function() {};

    function save()    {
        temp = chunks[j];
        memo = i;
        current = i;
    }
    function restore() {
        chunks[j] = temp;
        i = memo;
        current = i;
    }

    function sync() {
        if (i > current) {
            chunks[j] = chunks[j].slice(i - current);
            current = i;
        }
    }
    //
    // Parse from a token, regexp or string, and move forward if match
    //
    function $(tok) {
        var match, args, length, c, index, endIndex, k;

        // Non-terminal
        if (tok instanceof Function) {
            return tok.call(parser.parsers);
        // Terminal
        // Either match a single character in the input,
        // or match a regexp in the current chunk (chunk[j]).
        } else if (typeof(tok) === 'string') {
            match = input.charAt(i) === tok ? tok : null;
            length = 1;
            sync();
        } else {
            sync();

            match = tok.exec(chunks[j]);
            if (match) {
                length = match[0].length;
            } else {
                return null;
            }
        }

        // The match is confirmed, add the match length to `i`,
        // and consume any extra white-space characters (' ' || '\n')
        // which come after that. The reason for this is that LeSS's
        // grammar is mostly white-space insensitive.
        if (match) {
            var mem = i += length;
            endIndex = i + chunks[j].length - length;

            while (i < endIndex) {
                c = input.charCodeAt(i);
                if (! (c === 32 || c === 10 || c === 9)) { break; }
                i++;
            }
            chunks[j] = chunks[j].slice(length + (i - mem));
            current = i;

            if (chunks[j].length === 0 && j < chunks.length - 1) { j++; }

            if (typeof(match) === 'string') {
                return match;
            } else {
                return match.length === 1 ? match[0] : match;
            }
        }
    }

    // Same as $(), but don't change the state of the parser,
    // just return the match.
    function peek(tok) {
        if (typeof(tok) === 'string') {
            return input.charAt(i) === tok;
        } else {
            return !!tok.test(chunks[j]);
        }
    }

    function extractErrorLine(style, errorIndex) {
        return (style.slice(0, errorIndex).match(/\n/g) || '').length + 1;
    }


    // Make an error object from a passed set of properties.
    // Accepted properties:
    // - `message`: Text of the error message.
    // - `filename`: Filename where the error occurred.
    // - `index`: Char. index where the error occurred.
    function makeError(err) {
        var einput;
        var errorTemplate;

        _.defaults(err, {
            index: furthest,
            filename: env.filename,
            message: 'Parse error.',
            line: 0,
            column: -1
        });

        if (err.filename && that.env.inputs && that.env.inputs[err.filename]) {
            einput = that.env.inputs[err.filename];
        } else {
            einput = input;
        }

        err.line = extractErrorLine(einput, err.index);
        for (var n = err.index; n >= 0 && einput.charAt(n) !== '\n'; n--) {
            err.column++;
        }
        errorTemplate = _.template('<%=filename%>:<%=line%>:<%=column%> <%=message%>');
        return new Error(errorTemplate(err));
    }

    this.env = env = env || {};
    this.env.filename = this.env.filename || null;
    this.env.inputs = this.env.inputs || {};

    // The Parser
    parser = {

        extractErrorLine: extractErrorLine,
        //
        // Parse an input string into an abstract syntax tree.
        // Throws an error on parse errors.
        parse: function(str) {
            var root, start, end, zone, line, lines, buff = [], c, error = null;

            i = j = current = furthest = 0;
            chunks = [];
            input = str.replace(/\r\n/g, '\n');
            if (env.filename) {
                that.env.inputs[env.filename] = input;
            }

            var early_exit = false;

            // Split the input into chunks.
            chunks = (function (chunks) {
                var j = 0,
                    skip = /(?:@\{[\w-]+\}|[^"'`\{\}\/\(\)\\])+/g,
                    comment = /\/\*(?:[^*]|\*+[^\/*])*\*+\/|\/\/.*/g,
                    string = /"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'|`((?:[^`]|\\.)*)`/g,
                    level = 0,
                    match,
                    chunk = chunks[0],
                    inParam;

                for (var i = 0, c, cc; i < input.length;) {
                    skip.lastIndex = i;
                    if (match = skip.exec(input)) {
                        if (match.index === i) {
                            i += match[0].length;
                            chunk.push(match[0]);
                        }
                    }
                    c = input.charAt(i);
                    comment.lastIndex = string.lastIndex = i;

                    if (match = string.exec(input)) {
                        if (match.index === i) {
                            i += match[0].length;
                            chunk.push(match[0]);
                            continue;
                        }
                    }

                    if (!inParam && c === '/') {
                        cc = input.charAt(i + 1);
                        if (cc === '/' || cc === '*') {
                            if (match = comment.exec(input)) {
                                if (match.index === i) {
                                    i += match[0].length;
                                    chunk.push(match[0]);
                                    continue;
                                }
                            }
                        }
                    }

                    switch (c) {
                        case '{': if (! inParam) { level ++;        chunk.push(c);                           break; }
                        case '}': if (! inParam) { level --;        chunk.push(c); chunks[++j] = chunk = []; break; }
                        case '(': if (! inParam) { inParam = true;  chunk.push(c);                           break; }
                        case ')': if (  inParam) { inParam = false; chunk.push(c);                           break; }
                        default:                                    chunk.push(c);
                    }

                    i++;
                }
                if (level !== 0) {
                    error = {
                        index: i - 1,
                        type: 'Parse',
                        message: (level > 0) ? "missing closing `}`" : "missing opening `{`"
                    };
                }

                return chunks.map(function (c) { return c.join(''); });
            })([[]]);

            if (error) {
                throw makeError(error);
            }

            // Start with the primary rule.
            // The whole syntax tree is held under a Ruleset node,
            // with the `root` property set to true, so no `{}` are
            // output.
            root = new tree.Ruleset([], $(this.parsers.primary));
            root.root = true;

            // Get an array of Ruleset objects, flattened
            // and sorted according to specificitySort
            root.toList = (function() {
                var line, lines, column;
                return function(env) {
                    env.error = function(e) {
                        if (!env.errors) env.errors = new Error('');
                        if (env.errors.message) {
                            env.errors.message += '\n' + makeError(e).message;
                        } else {
                            env.errors.message = makeError(e).message;
                        }
                    };
                    env.frames = env.frames || [];


                    // call populates Invalid-caused errors
                    var definitions = this.flatten([], [], env);
                    definitions.sort(specificitySort);
                    return definitions;
                };
            })();

            // Sort rules by specificity: this function expects selectors to be
            // split already.
            //
            // Written to be used as a .sort(Function);
            // argument.
            //
            // [1, 0, 0, 467] > [0, 0, 1, 520]
            var specificitySort = function(a, b) {
                var as = a.specificity;
                var bs = b.specificity;

                if (as[0] != bs[0]) return bs[0] - as[0];
                if (as[1] != bs[1]) return bs[1] - as[1];
                if (as[2] != bs[2]) return bs[2] - as[2];
                return bs[3] - as[3];
            };

            return root;
        },

        // Here in, the parsing rules/functions
        //
        // The basic structure of the syntax tree generated is as follows:
        //
        //   Ruleset ->  Rule -> Value -> Expression -> Entity
        //
        //  In general, most rules will try to parse a token with the `$()` function, and if the return
        //  value is truly, will return a new node, of the relevant type. Sometimes, we need to check
        //  first, before parsing, that's when we use `peek()`.
        parsers: {
            // The `primary` rule is the *entry* and *exit* point of the parser.
            // The rules here can appear at any level of the parse tree.
            //
            // The recursive nature of the grammar is an interplay between the `block`
            // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
            // as represented by this simplified grammar:
            //
            //     primary  →  (ruleset | rule)+
            //     ruleset  →  selector+ block
            //     block    →  '{' primary '}'
            //
            // Only at one point is the primary rule not called from the
            // block rule: at the root level.
            primary: function() {
                var node, root = [];

                while ((node = $(this.rule) || $(this.ruleset) ||
                               $(this.comment)) ||
                               $(/^[\s\n]+/) || (node = $(this.invalid))) {
                    if (node) root.push(node);
                }
                return root;
            },

            invalid: function () {
                var chunk = $(/^[^;\n]*[;\n]/);

                // To fail gracefully, match everything until a semicolon or linebreak.
                if (chunk) {
                    return new tree.Invalid(chunk, memo);
                }
            },

            // We create a Comment node for CSS comments `/* */`,
            // but keep the LeSS comments `//` silent, by just skipping
            // over them.
            comment: function() {
                var comment;

                if (input.charAt(i) !== '/') return;

                if (input.charAt(i + 1) === '/') {
                    return new tree.Comment($(/^\/\/.*/), true);
                } else if (comment = $(/^\/\*(?:[^*]|\*+[^\/*])*\*+\/\n?/)) {
                    return new tree.Comment(comment);
                }
            },

            // Entities are tokens which can be found inside an Expression
            entities: {

                // A string, which supports escaping " and ' "milky way" 'he\'s the one!'
                quoted: function() {
                    if (input.charAt(i) !== '"' && input.charAt(i) !== "'") return;
                    var str = $(/^"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'/);
                    if (str) {
                        return new tree.Quoted(str[1] || str[2]);
                    }
                },

                // A reference to a Mapnik field, like [NAME]
                // Behind the scenes, this has the same representation, but Carto
                // needs to be careful to warn when unsupported operations are used.
                field: function() {
                    if (! $('[')) return;
                    var field_name = $(/(^[^\]]+)/);
                    if (! $(']')) return;
                    if (field_name) return new tree.Field(field_name[1]);
                },

                // This is a comparison operator
                comparison: function() {
                    var str = $(/^=~|=|!=|<=|>=|<|>/);
                    if (str) {
                        return str;
                    }
                },

                // A catch-all word, such as: hard-light
                // These can start with either a letter or a dash (-),
                // and then contain numbers, underscores, and letters.
                keyword: function() {
                    var k = $(/^[A-Za-z-]+[A-Za-z-0-9_]*/);
                    if (k) { return new tree.Keyword(k); }
                },

                // A function call like rgb(255, 0, 255)
                // The arguments are parsed with the `entities.arguments` parser.
                call: function() {
                    var name, args;

                    if (!(name = /^([\w\-]+|%)\(/.exec(chunks[j]))) return;

                    name = name[1];

                    if (name === 'url') {
                        // url() is handled by the url parser instead
                        return null;
                    } else {
                        i += name.length;
                    }

                    $('('); // Parse the '(' and consume whitespace.

                    args = $(this.entities['arguments']);

                    if (!$(')')) return;

                    if (name) {
                        return new tree.Call(name, args, i);
                    }
                },
                // Arguments are comma-separated expressions
                'arguments': function() {
                    var args = [], arg;

                    while (arg = $(this.expression)) {
                        args.push(arg);
                        if (! $(',')) { break; }
                    }

                    return args;
                },
                literal: function() {
                    return $(this.entities.dimension) ||
                        $(this.entities.keywordcolor) ||
                        $(this.entities.hexcolor) ||
                        $(this.entities.quoted);
                },

                // Parse url() tokens
                //
                // We use a specific rule for urls, because they don't really behave like
                // standard function calls. The difference is that the argument doesn't have
                // to be enclosed within a string, so it can't be parsed as an Expression.
                url: function() {
                    var value;

                    if (input.charAt(i) !== 'u' || !$(/^url\(/)) return;
                    value = $(this.entities.quoted) || $(this.entities.variable) ||
                            $(/^[\-\w%@$\/.&=:;#+?~]+/) || '';
                    if (! $(')')) {
                        return new tree.Invalid(value, memo, 'Missing closing ) in URL.');
                    } else {
                        return new tree.URL((typeof value.value !== 'undefined' ||
                            value instanceof tree.Variable) ?
                            value : new tree.Quoted(value));
                    }
                },

                // A Variable entity, such as `@fink`, in
                //
                //     width: @fink + 2px
                //
                // We use a different parser for variable definitions,
                // see `parsers.variable`.
                variable: function() {
                    var name, index = i;

                    if (input.charAt(i) === '@' && (name = $(/^@[\w-]+/))) {
                        return new tree.Variable(name, index, env.filename);
                    }
                },

                hexcolor: function() {
                    var rgb;
                    if (input.charAt(i) === '#' && (rgb = $(/^#([a-fA-F0-9]{6}|[a-fA-F0-9]{3})/))) {
                        return new tree.Color(rgb[1]);
                    }
                },

                keywordcolor: function() {
                    var rgb = chunks[j].match(/^[a-z]+/);
                    if (rgb && rgb[0] in tree.Reference.data.colors) {
                        return new tree.Color(tree.Reference.data.colors[$(/^[a-z]+/)]);
                    }
                },

                // A Dimension, that is, a number and a unit. The only
                // unit that has an effect is %
                dimension: function() {
                    var c = input.charCodeAt(i);
                    if ((c > 57 || c < 45) || c === 47) return;
                    var value = $(/^(-?\d*\.?\d+(?:[eE][-+]?\d+)?)(\%|\w+)?/);
                    if (value) {
                        return new tree.Dimension(value[1], value[2], memo);
                    }
                }

            },

            // The variable part of a variable definition.
            // Used in the `rule` parser. Like @fink:
            variable: function() {
                var name;

                if (input.charAt(i) === '@' && (name = $(/^(@[\w-]+)\s*:/))) {
                    return name[1];
                }
            },

            // Entities are the smallest recognized token,
            // and can be found inside a rule's value.
            entity: function() {
                return $(this.entities.call) ||
                    $(this.entities.literal) ||
                    $(this.entities.field) ||
                    $(this.entities.variable) ||
                    $(this.entities.url) ||
                    $(this.entities.keyword);
            },

            // A Rule terminator. Note that we use `peek()` to check for '}',
            // because the `block` rule will be expecting it, but we still need to make sure
            // it's there, if ';' was ommitted.
            end: function() {
                return $(';') || peek('}');
            },

            // Elements are the building blocks for Selectors. They consist of
            // an element name, such as a tag a class, or `*`.
            element: function() {
                var e = $(/^(?:[.#][\w\-]+|\*|Map)/);
                if (e) return new tree.Element(e);
            },

            // Attachments allow adding multiple lines, polygons etc. to an
            // object. There can only be one attachment per selector.
            attachment: function() {
                var s = $(/^::([\w\-]+(?:\/[\w\-]+)*)/);
                if (s) return s[1];
            },

            // Selectors are made out of one or more Elements, see above.
            selector: function() {
                var a, attachment,
                    e, elements = [],
                    f, filters = new tree.Filterset(),
                    z, zooms = [],
                    frame_offset = tree.FrameOffset.none;
                    segments = 0, conditions = 0;

                while (
                        (e = $(this.element)) ||
                        (z = $(this.zoom)) ||
                        (fo = $(this.frame_offset)) ||
                        (f = $(this.filter)) ||
                        (a = $(this.attachment))
                    ) {
                    segments++;
                    if (e) {
                        elements.push(e);
                    } else if (z) {
                        zooms.push(z);
                        conditions++;
                    } else if (fo) {
                        frame_offset = fo;
                        conditions++;
                    } else if (f) {
                        var err = filters.add(f);
                        if (err) {
                            throw makeError({
                                message: err,
                                index: i - 1
                            });
                        }
                        conditions++;
                    } else if (attachment) {
                        throw makeError({
                            message: 'Encountered second attachment name.',
                            index: i - 1
                        });
                    } else {
                        attachment = a;
                    }

                    var c = input.charAt(i);
                    if (c === '{' || c === '}' || c === ';' || c === ',') { break; }
                }

                if (segments) {
                    return new tree.Selector(filters, zooms, frame_offset, elements, attachment, conditions, memo);
                }
            },

            filter: function() {
                save();
                var key, op, val;
                if (! $('[')) return;
                if (key = $(/^[a-zA-Z0-9\-_]+/) ||
                    $(this.entities.quoted) ||
                    $(this.entities.variable) ||
                    $(this.entities.keyword) ||
                    $(this.entities.field)) {
                    // TODO: remove at 1.0.0
                    if (key instanceof tree.Quoted) {
                        key = new tree.Field(key.toString());
                    }
                    if ((op = $(this.entities.comparison)) &&
                        (val = $(this.entities.quoted) ||
                             $(this.entities.variable) ||
                             $(this.entities.dimension) ||
                             $(this.entities.keyword) ||
                             $(this.entities.field))) {
                        if (! $(']')) {
                            throw makeError({
                                message: 'Missing closing ] of filter.',
                                index: memo - 1
                            });
                        }
                        if (!key.is) key = new tree.Field(key);
                        return new tree.Filter(key, op, val, memo, env.filename);
                    }
                }
            },

            frame_offset: function() {
                save();
                var op, val;
                if ($(/^\[\s*frame-offset/g) &&
                    (op = $(this.entities.comparison)) &&
                    (val = $(/^\d+/)) &&
                    $(']'))  {
                        return tree.FrameOffset(op, val, memo);
                }
            },

            zoom: function() {
                save();
                var op, val;
                if ($(/^\[\s*zoom/g) &&
                    (op = $(this.entities.comparison)) &&
                    (val = $(this.entities.variable) || $(this.entities.dimension)) && $(']')) {
                        return new tree.Zoom(op, val, memo);
                } else {
                    // backtrack
                    restore();
                }
            },

            // The `block` rule is used by `ruleset`
            // It's a wrapper around the `primary` rule, with added `{}`.
            block: function() {
                var content;

                if ($('{') && (content = $(this.primary)) && $('}')) {
                    return content;
                }
            },

            // div, .class, body > p {...}
            ruleset: function() {
                var selectors = [], s, f, l, rules, filters = [];
                save();

                while (s = $(this.selector)) {
                    selectors.push(s);
                    while ($(this.comment)) {}
                    if (! $(',')) { break; }
                    while ($(this.comment)) {}
                }
                if (s) {
                    while ($(this.comment)) {}
                }

                if (selectors.length > 0 && (rules = $(this.block))) {
                    if (selectors.length === 1 &&
                        selectors[0].elements.length &&
                        selectors[0].elements[0].value === 'Map') {
                        var rs = new tree.Ruleset(selectors, rules);
                        rs.isMap = true;
                        return rs;
                    }
                    return new tree.Ruleset(selectors, rules);
                } else {
                    // Backtrack
                    restore();
                }
            },

            rule: function() {
                var name, value, c = input.charAt(i);
                save();

                if (c === '.' || c === '#') { return; }

                if (name = $(this.variable) || $(this.property)) {
                    value = $(this.value);

                    if (value && $(this.end)) {
                        return new tree.Rule(name, value, memo, env.filename);
                    } else {
                        furthest = i;
                        restore();
                    }
                }
            },

            font: function() {
                var value = [], expression = [], weight, font, e;

                while (e = $(this.entity)) {
                    expression.push(e);
                }

                value.push(new tree.Expression(expression));

                if ($(',')) {
                    while (e = $(this.expression)) {
                        value.push(e);
                        if (! $(',')) { break; }
                    }
                }
                return new tree.Value(value);
            },

            // A Value is a comma-delimited list of Expressions
            // In a Rule, a Value represents everything after the `:`,
            // and before the `;`.
            value: function() {
                var e, expressions = [];

                while (e = $(this.expression)) {
                    expressions.push(e);
                    if (! $(',')) { break; }
                }

                if (expressions.length > 1) {
                    return new tree.Value(expressions.map(function(e) {
                        return e.value[0];
                    }));
                } else if (expressions.length === 1) {
                    return new tree.Value(expressions);
                }
            },
            // A sub-expression, contained by parenthensis
            sub: function() {
                var e, expressions = [];

                if ($('(')) {
                  while (e = $(this.expression)) {
                      expressions.push(e);
                      if (! $(',')) { break; }
                  }
                  $(')');
                }

                if (expressions.length > 1) {
                    return new tree.Value(expressions.map(function(e) {
                        return e.value[0];
                    }));
                } else if (expressions.length === 1) {
                    return new tree.Value(expressions);
                }
            },
            // This is a misnomer because it actually handles multiplication
            // and division.
            multiplication: function() {
                var m, a, op, operation;
                if (m = $(this.operand)) {
                    while ((op = ($('/') || $('*') || $('%'))) && (a = $(this.operand))) {
                        operation = new tree.Operation(op, [operation || m, a], memo);
                    }
                    return operation || m;
                }
            },
            addition: function() {
                var m, a, op, operation;
                if (m = $(this.multiplication)) {
                    while ((op = $(/^[-+]\s+/) || (input.charAt(i - 1) != ' ' && ($('+') || $('-')))) &&
                           (a = $(this.multiplication))) {
                        operation = new tree.Operation(op, [operation || m, a], memo);
                    }
                    return operation || m;
                }
            },

            // An operand is anything that can be part of an operation,
            // such as a Color, or a Variable
            operand: function() {
                return $(this.sub) || $(this.entity);
            },

            // Expressions either represent mathematical operations,
            // or white-space delimited Entities.  @var * 2
            expression: function() {
                var e, delim, entities = [], d;

                while (e = $(this.addition) || $(this.entity)) {
                    entities.push(e);
                }

                if (entities.length > 0) {
                    return new tree.Expression(entities);
                }
            },
            property: function() {
                var name = $(/^(([a-z][-a-z_0-9]*\/)?\*?-?[-a-z_0-9]+)\s*:/);
                if (name) return name[1];
            }
        }
    };
    return parser;
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./tree":45,"underscore":163}],42:[function(require,module,exports){
(function (global){
var _ = global._ || require('underscore');
var carto = require('./index');

carto.Renderer = function Renderer(env, options) {
    this.env = env || {};
    this.options = options || {};
    this.options.mapnik_version = this.options.mapnik_version || '3.0.0';
};

/**
 * Prepare a MSS document (given as an string) into a
 * XML Style fragment (mostly useful for debugging)
 *
 * @param {String} data the mss contents as a string.
 */
carto.Renderer.prototype.renderMSS = function render(data) {
    // effects is a container for side-effects, which currently
    // are limited to FontSets.
    var env = _.defaults(this.env, {
        benchmark: false,
        validation_data: false,
        effects: []
    });

    if (!carto.tree.Reference.setVersion(this.options.mapnik_version)) {
        throw new Error("Could not set mapnik version to " + this.options.mapnik_version);
    }

    var output = [];
    var styles = [];

    if (env.benchmark) console.time('Parsing MSS');
    var parser = (carto.Parser(env)).parse(data);
    if (env.benchmark) console.timeEnd('Parsing MSS');

    if (env.benchmark) console.time('Rule generation');
    var rule_list = parser.toList(env);
    if (env.benchmark) console.timeEnd('Rule generation');

    if (env.benchmark) console.time('Rule inheritance');
    var rules = inheritDefinitions(rule_list, env);
    if (env.benchmark) console.timeEnd('Rule inheritance');

    if (env.benchmark) console.time('Style sort');
    var sorted = sortStyles(rules,env);
    if (env.benchmark) console.timeEnd('Style sort');

    if (env.benchmark) console.time('Total Style generation');
    for (var k = 0, rule, style_name; k < sorted.length; k++) {
        rule = sorted[k];
        style_name = 'style' + (rule.attachment !== '__default__' ? '-' + rule.attachment : '');
        styles.push(style_name);
        var bench_name = '\tStyle "'+style_name+'" (#'+k+') toXML';
        if (env.benchmark) console.time(bench_name);
        // env.effects can be modified by this call
        output.push(carto.tree.StyleXML(style_name, rule.attachment, rule, env));
        if (env.benchmark) console.timeEnd(bench_name);
    }
    if (env.benchmark) console.timeEnd('Total Style generation');
    if (env.errors) throw env.errors;
    return output.join('\n');
};

/**
 * Prepare a MML document (given as an object) into a
 * fully-localized XML file ready for Mapnik2 consumption
 *
 * @param {String} m - the JSON file as a string.
 */
carto.Renderer.prototype.render = function render(m) {
    // effects is a container for side-effects, which currently
    // are limited to FontSets.
    var env = _.defaults(this.env, {
        benchmark: false,
        validation_data: false,
        effects: [],
        ppi: 90.714
    });

    if (!carto.tree.Reference.setVersion(this.options.mapnik_version)) {
        throw new Error("Could not set mapnik version to " + this.options.mapnik_version);
    }

    var output = [];

    // Transform stylesheets into definitions.
    var definitions = _.chain(m.Stylesheet)
        .map(function(s) {
            if (typeof s == 'string') {
                throw new Error("Stylesheet object is expected not a string: '" + s + "'");
            }
            // Passing the environment from stylesheet to stylesheet,
            // allows frames and effects to be maintained.
            env = _.extend(env, {filename:s.id});

            var time = +new Date(),
                root = (carto.Parser(env)).parse(s.data);
            if (env.benchmark)
                console.warn('Parsing time: ' + (new Date() - time) + 'ms');
            return root.toList(env);
        })
        .flatten()
        .value();

    function appliesTo(name, classIndex) {
        return function(definition) {
            return definition.appliesTo(l.name, classIndex);
        };
    }

    // Iterate through layers and create styles custom-built
    // for each of them, and apply those styles to the layers.
    var styles, l, classIndex, rules, sorted, matching;
    for (var i = 0; i < m.Layer.length; i++) {
        l = m.Layer[i];
        styles = [];
        classIndex = {};

        if (env.benchmark) console.warn('processing layer: ' + l.id);
        // Classes are given as space-separated alphanumeric strings.
        var classes = (l['class'] || '').split(/\s+/g);
        for (var j = 0; j < classes.length; j++) {
            classIndex[classes[j]] = true;
        }
        matching = definitions.filter(appliesTo(l.name, classIndex));
        rules = inheritDefinitions(matching, env);
        sorted = sortStyles(rules, env);

        for (var k = 0, rule, style_name; k < sorted.length; k++) {
            rule = sorted[k];
            style_name = l.name + (rule.attachment !== '__default__' ? '-' + rule.attachment : '');

            // env.effects can be modified by this call
            var styleXML = carto.tree.StyleXML(style_name, rule.attachment, rule, env);

            if (styleXML) {
                output.push(styleXML);
                styles.push(style_name);
            }
        }

        output.push(carto.tree.LayerXML(l, styles));
    }

    output.unshift(env.effects.map(function(e) {
        return e.toXML(env);
    }).join('\n'));

    var map_properties = getMapProperties(m, definitions, env);

    // Exit on errors.
    if (env.errors) throw env.errors;

    // Pass TileJSON and other custom parameters through to Mapnik XML.
    var parameters = _.reduce(m, function(memo, v, k) {
        if (!v && v !== 0) return memo;

        switch (k) {
        // Known skippable properties.
        case 'srs':
        case 'Layer':
        case 'Stylesheet':
            break;
        // Non URL-bound TileJSON properties.
        case 'bounds':
        case 'center':
        case 'minzoom':
        case 'maxzoom':
        case 'version':
            memo.push('  <Parameter name="' + k + '">' + v + '</Parameter>');
            break;
        // Properties that require CDATA.
        case 'name':
        case 'description':
        case 'legend':
        case 'attribution':
        case 'template':
            memo.push('  <Parameter name="' + k + '"><![CDATA[' + v + ']]></Parameter>');
            break;
        // Mapnik image format.
        case 'format':
            memo.push('  <Parameter name="' + k + '">' + v + '</Parameter>');
            break;
        // Mapnik interactivity settings.
        case 'interactivity':
            memo.push('  <Parameter name="interactivity_layer">' + v.layer + '</Parameter>');
            memo.push('  <Parameter name="interactivity_fields">' + v.fields + '</Parameter>');
            break;
        // Support any additional scalar properties.
        default:
            if ('string' === typeof v) {
                memo.push('  <Parameter name="' + k + '"><![CDATA[' + v + ']]></Parameter>');
            } else if ('number' === typeof v) {
                memo.push('  <Parameter name="' + k + '">' + v + '</Parameter>');
            } else if ('boolean' === typeof v) {
                memo.push('  <Parameter name="' + k + '">' + v + '</Parameter>');
            }
            break;
        }
        return memo;
    }, []);
    if (parameters.length) output.unshift(
        '<Parameters>\n' +
        parameters.join('\n') +
        '\n</Parameters>\n'
    );

    var properties = _.map(map_properties, function(v) { return ' ' + v; }).join('');

    output.unshift(
        '<?xml version="1.0" ' +
        'encoding="utf-8"?>\n' +
        '<!DOCTYPE Map[]>\n' +
        '<Map' + properties +'>\n');
    output.push('</Map>');
    return output.join('\n');
};

/**
 * This function currently modifies 'current'
 * @param {Array}  current  current list of rules
 * @param {Object} definition a Definition object to add to the rules
 * @param {Object} byFilter an object/dictionary of existing filters. This is
 * actually keyed `attachment->filter`
 * @param {Object} env the current environment
*/
function addRules(current, definition, byFilter, env) {
    var newFilters = definition.filters,
        newRules = definition.rules,
        updatedFilters, clone, previous;

    // The current definition might have been split up into
    // multiple definitions already.
    for (var k = 0; k < current.length; k++) {
        updatedFilters = current[k].filters.cloneWith(newFilters);
        if (updatedFilters) {
            previous = byFilter[updatedFilters];
            if (previous) {
                // There's already a definition with those exact
                // filters. Add the current definitions' rules
                // and stop processing it as the existing rule
                // has already gone down the inheritance chain.
                previous.addRules(newRules);
            } else {
                clone = current[k].clone(updatedFilters);
                // Make sure that we're only maintaining the clone
                // when we did actually add rules. If not, there's
                // no need to keep the clone around.
                if (clone.addRules(newRules)) {
                    // We inserted an element before this one, so we need
                    // to make sure that in the next loop iteration, we're
                    // not performing the same task for this element again,
                    // hence the k++.
                    byFilter[updatedFilters] = clone;
                    current.splice(k, 0, clone);
                    k++;
                }
            }
        } else if (updatedFilters === null) {
            // if updatedFilters is null, then adding the filters doesn't
            // invalidate or split the selector, so we addRules to the
            // combined selector

            // Filters can be added, but they don't change the
            // filters. This means we don't have to split the
            // definition.
            //
            // this is cloned here because of shared classes, see
            // sharedclass.mss
            current[k] = current[k].clone();
            current[k].addRules(newRules);
        }
        // if updatedFeatures is false, then the filters split the rule,
        // so they aren't the same inheritance chain
    }
    return current;
}

/**
 * Apply inherited styles from their ancestors to them.
 *
 * called either once per render (in the case of mss) or per layer
 * (for mml)
 *
 * @param {Object} definitions - a list of definitions objects
 *   that contain .rules
 * @param {Object} env - the environment
 * @return {Array<Array>} an array of arrays is returned,
 *   in which each array refers to a specific attachment
 */
function inheritDefinitions(definitions, env) {
    var inheritTime = +new Date();
    // definitions are ordered by specificity,
    // high (index 0) to low
    var byAttachment = {},
        byFilter = {};
    var result = [];
    var current, previous, attachment;

    // Evaluate the filters specified by each definition with the given
    // environment to correctly resolve variable references
    definitions.forEach(function(d) {
        d.filters.ev(env);
    });

    for (var i = 0; i < definitions.length; i++) {

        attachment = definitions[i].attachment;
        current = [definitions[i]];

        if (!byAttachment[attachment]) {
            byAttachment[attachment] = [];
            byAttachment[attachment].attachment = attachment;
            byFilter[attachment] = {};
            result.push(byAttachment[attachment]);
        }

        // Iterate over all subsequent rules.
        for (var j = i + 1; j < definitions.length; j++) {
            if (definitions[j].attachment === attachment) {
                // Only inherit rules from the same attachment.
                current = addRules(current, definitions[j], byFilter[attachment], env);
            }
        }

        for (var k = 0; k < current.length; k++) {
            byFilter[attachment][current[k].filters] = current[k];
            byAttachment[attachment].push(current[k]);
        }
    }

    if (env.benchmark) console.warn('Inheritance time: ' + ((new Date() - inheritTime)) + 'ms');

    return result;

}

// Sort styles by the minimum index of their rules.
// This sorts a slice of the styles, so it returns a sorted
// array but does not change the input.
function sortStylesIndex(a, b) { return b.index - a.index; }
function sortStyles(styles, env) {
    for (var i = 0; i < styles.length; i++) {
        var style = styles[i];
        style.index = Infinity;
        for (var b = 0; b < style.length; b++) {
            var rules = style[b].rules;
            for (var r = 0; r < rules.length; r++) {
                var rule = rules[r];
                if (rule.index < style.index) {
                    style.index = rule.index;
                }
            }
        }
    }

    var result = styles.slice();
    result.sort(sortStylesIndex);
    return result;
}

/**
 * Find a rule like Map { background-color: #fff; },
 * if any, and return a list of properties to be inserted
 * into the <Map element of the resulting XML. Translates
 * properties of the mml object at `m` directly into XML
 * properties.
 *
 * @param {Object} m the mml object.
 * @param {Array} definitions the output of toList.
 * @param {Object} env
 * @return {String} rendered properties.
 */
function getMapProperties(m, definitions, env) {
    var rules = {};
    var symbolizers = carto.tree.Reference.data.symbolizers.map;

    _(m).each(function(value, key) {
        if (key in symbolizers) rules[key] = key + '="' + value + '"';
    });

    definitions.filter(function(r) {
        return r.elements.join('') === 'Map';
    }).forEach(function(r) {
        for (var i = 0; i < r.rules.length; i++) {
            var key = r.rules[i].name;
            if (!(key in symbolizers)) {
                env.error({
                    message: 'Rule ' + key + ' not allowed for Map.',
                    index: r.rules[i].index
                });
            }
            rules[key] = r.rules[i].ev(env).toXML(env);
        }
    });
    return rules;
}

module.exports = carto;
module.exports.addRules = addRules;
module.exports.inheritDefinitions = inheritDefinitions;
module.exports.sortStyles = sortStyles;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./index":40,"underscore":163}],43:[function(require,module,exports){
(function (global){
(function(carto) {
var tree = require('./tree');
var _ = global._ || require('underscore');


function CartoCSS(style, options) {
  this.options = options || {};
  this.imageURLs = [];
  if(style) {
    this.setStyle(style);
  }
}

CartoCSS.Layer = function(shader, options) {
  this.options = options;
  this.shader = shader;
};


CartoCSS.Layer.prototype = {

  fullName: function() {
    return this.shader.attachment;
  },

  name: function() {
    return this.fullName().split('::')[0];
  },

  // frames this layer need to be rendered
  frames: function() {
    return this.shader.frames;
  },

  attachment: function() {
    return this.fullName().split('::')[1];
  },

  eval: function(prop) {
    var p = this.shader[prop];
    if (!p || !p.style) return;
    return p.style({}, { zoom: 0, 'frame-offset': 0 });
  },

  /*
   * `props`: feature properties
   * `context`: rendering properties, i.e zoom
   */
  getStyle: function(props, context) {
    var style = {};
    for(var i in this.shader) {
      if(i !== 'attachment' && i !== 'zoom' && i !== 'frames' && i !== 'symbolizers') {
        style[i] = this.shader[i].style(props, context);
      }
    }
    return style;
  },

  /**
   * return the symbolizers that need to be rendered with
   * this style. The order is the rendering order.
   * @returns a list with 3 possible values 'line', 'marker', 'polygon'
   */
  getSymbolizers: function() {
    return this.shader.symbolizers;
  },

  /**
   * returns if the style varies with some feature property.
   * Useful to optimize rendering
   */
  isVariable: function() {
    for(var i in this.shader) {
      if(i !== 'attachment' && i !== 'zoom' && i !== 'frames' && i !== 'symbolizers') {
        if (!this.shader[i].constant) {
          return true;
        }
      }
    }
    return false;
  },

  getShader: function() {
    return this.shader;
  },

  /**
   * returns true if a feature needs to be rendered
   */
  filter: function(featureType, props, context) {
    for(var i in this.shader) {
     var s = this.shader[i](props, context);
     if(s) {
       return true;
     }
    }
    return false;
  },

  //
  // given a geoemtry type returns the transformed one acording the CartoCSS
  // For points there are two kind of types: point and sprite, the first one
  // is a circle, second one is an image sprite
  //
  // the other geometry types are the same than geojson (polygon, linestring...)
  //
  transformGeometry: function(type) {
    return type;
  },

  transformGeometries: function(geojson) {
    return geojson;
  }

};

CartoCSS.prototype = {

  setStyle: function(style) {
    var layers = this.parse(style);
    if(!layers) {
      throw new Error(this.parse_env.errors);
    }
    this.layers = layers.map(function(shader) {
        return new CartoCSS.Layer(shader);
    });
  },

  getLayers: function() {
    return this.layers;
  },

  getDefault: function() {
    return this.findLayer({ attachment: '__default__' });
  },

  findLayer: function(where) {
    return _.find(this.layers, function(value) {
      for (var key in where) {
        var v = value[key];
        if (typeof(v) === 'function') {
          v = v.call(value);
        }
        if (where[key] !== v) return false;
      }
      return true;
    });
  },

  _createFn: function(ops) {
    var body = ops.join('\n');
    if(this.options.debug) console.log(body);
    return Function("data","ctx", "var _value = null; " +  body + "; return _value; ");
  },

  _compile: function(shader) {
    if(typeof shader === 'string') {
        shader = eval("(function() { return " + shader +"; })()");
    }
    this.shader_src = shader;
    for(var attr in shader) {
        var c = mapper[attr];
        if(c) {
            this.compiled[c] = eval("(function() { return shader[attr]; })();");
        }
    }
  },
  getImageURLs: function(){
    return this.imageURLs;
  },

  parse: function(cartocss) {
    var parse_env = {
      frames: [],
      errors: [],
      error: function(obj) {
        this.errors.push(obj);
      }
    };
    this.parse_env = parse_env;

    var ruleset = null;
    try {
      ruleset = (new carto.Parser(parse_env)).parse(cartocss);
    } catch(e) {
      // add the style.mss string to match the response from the server
      parse_env.errors.push(e.message);
      return;
    }
    if(ruleset) {

      function defKey(def) {
        return def.elements[0] + "::" + def.attachment;
      }
      var defs = ruleset.toList(parse_env);
      defs.reverse();
      // group by elements[0].value::attachment
      var layers = {};
      for(var i = 0; i < defs.length; ++i) {
        var def = defs[i];
        var key = defKey(def);
        var layer = layers[key] = (layers[key] || {
          symbolizers: []
        });

        for(var u = 0; u<def.rules.length; u++){
          var rule = def.rules[u];
            if(rule.name === "marker-file" || rule.name === "point-file"){
              var value = rule.value.value[0].value[0].value.value;
              this.imageURLs.push(value);
            }
        }

        layer.frames = [];
        layer.zoom = tree.Zoom.all;
        var props = def.toJS(parse_env);
        if (this.options.debug) console.log("props", props);
        for(var v in props) {
          var lyr = layer[v] = layer[v] || {
            constant: false,
            symbolizer: null,
            js: [],
            index: 0
          };
          // build javascript statements
          lyr.js.push(props[v].map(function(a) { return a.js; }).join('\n'));
          // get symbolizer for prop
          lyr.symbolizer = _.first(props[v].map(function(a) { return a.symbolizer; }));
          // serach the max index to know rendering order
          lyr.index = _.max(props[v].map(function(a) { return a.index; }).concat(lyr.index));
          lyr.constant = !_.any(props[v].map(function(a) { return !a.constant; }));
          // True when the property is filtered.
          lyr.filtered = props[v][0].filtered;
        }
      }

      var ordered_layers = [];
      if (this.options.debug) console.log(layers);

      var done = {};
      for(var i = 0; i < defs.length; ++i) {
        var def = defs[i];

        if (this.options.strict) {
          def.toXML(parse_env, {});
          if (parse_env.errors.message) {
            throw new Error(parse_env.errors.message);
          }
        }

        var k = defKey(def);
        var layer = layers[k];
        if(!done[k]) {
          if(this.options.debug) console.log("**", k);
          for(var prop in layer) {
            if (prop !== 'zoom' && prop !== 'frames' && prop !== 'symbolizers') {
              if(this.options.debug) console.log("*", prop);
              layer[prop].style = this._createFn(layer[prop].js);
              layer.symbolizers.push(layer[prop].symbolizer);
              layer.symbolizers = _.uniq(layer.symbolizers);
            }
          }
          layer.attachment = k;
          ordered_layers.push(layer);
          done[k] = true;
        }
        layer.zoom |= def.zoom;
        layer.frames.push(def.frame_offset);
      }

      // uniq the frames
      for(i = 0; i < ordered_layers.length; ++i) {
        ordered_layers[i].frames = _.uniq(ordered_layers[i].frames);
      }

      return ordered_layers;

    }
    return null;
  }
};


carto.RendererJS = function (options) {
    this.options = options || {};
    this.options.mapnik_version = this.options.mapnik_version || 'latest';
    this.reference = this.options.reference || require('./torque-reference').version.latest;
    this.options.strict = this.options.hasOwnProperty('strict') ? this.options.strict : false;
};

// Prepare a javascript object which contains the layers
carto.RendererJS.prototype.render = function render(cartocss, callback) {
    tree.Reference.setData(this.reference);
    return new CartoCSS(cartocss, this.options);
}

if(typeof(module) !== 'undefined') {
  module.exports = carto.RendererJS;
}


})(require('../carto'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../carto":40,"./torque-reference":44,"./tree":45,"underscore":163}],44:[function(require,module,exports){
var _mapnik_reference_latest = {
    "version": "2.1.1",
    "style": {
        "filter-mode": {
            "type": [
                "all",
                "first"
            ],
            "doc": "Control the processing behavior of Rule filters within a Style. If 'all' is used then all Rules are processed sequentially independent of whether any previous filters matched. If 'first' is used then it means processing ends after the first match (a positive filter evaluation) and no further Rules in the Style are processed ('first' is usually the default for CSS implementations on top of Mapnik to simplify translation from CSS to Mapnik XML)",
            "default-value": "all",
            "default-meaning": "All Rules in a Style are processed whether they have filters or not and whether or not the filter conditions evaluate to true."
        },
        "image-filters": {
            "css": "image-filters",
            "default-value": "none",
            "default-meaning": "no filters",
            "type": "functions",
            "functions": [
                ["agg-stack-blur", 2],
                ["emboss", 0],
                ["blur", 0],
                ["gray", 0],
                ["sobel", 0],
                ["edge-detect", 0],
                ["x-gradient", 0],
                ["y-gradient", 0],
                ["invert", 0],
                ["sharpen", 0],
                ["colorize-alpha", -1],
                ["color-to-alpha", 1],
                ["scale-hsla", 8]
            ],
            "doc": "A list of image filters."
        },
        "comp-op": {
            "css": "comp-op",
            "default-value": "src-over",
            "default-meaning": "add the current layer on top of other layers",
            "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
            "type": ["clear",
                "src",
                "dst",
                "src-over",
                "source-over", // added for torque
                "dst-over",
                "src-in",
                "dst-in",
                "src-out",
                "dst-out",
                "src-atop",
                "dst-atop",
                "xor",
                "plus",
                "minus",
                "multiply",
                "screen",
                "overlay",
                "darken",
                "lighten",
                "lighter", // added for torque
                "color-dodge",
                "color-burn",
                "hard-light",
                "soft-light",
                "difference",
                "exclusion",
                "contrast",
                "invert",
                "invert-rgb",
                "grain-merge",
                "grain-extract",
                "hue",
                "saturation",
                "color",
                "value"
            ]
        },
        "opacity": {
            "css": "opacity",
            "type": "float",
            "doc": "An alpha value for the style (which means an alpha applied to all features in separate buffer and then composited back to main buffer)",
            "default-value": 1,
            "default-meaning": "no separate buffer will be used and no alpha will be applied to the style after rendering"
        }
    },
    "layer" : {
        "name": {
            "default-value": "",
            "type":"string",
            "required" : true,
            "default-meaning": "No layer name has been provided",
            "doc": "The name of a layer. Can be anything you wish and is not strictly validated, but ideally unique  in the map"
        },
        "srs": {
            "default-value": "",
            "type":"string",
            "default-meaning": "No srs value is provided and the value will be inherited from the Map's srs",
            "doc": "The spatial reference system definition for the layer, aka the projection. Can either be a proj4 literal string like '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs' or, if the proper proj4 epsg/nad/etc identifier files are installed, a string that uses an id like: '+init=epsg:4326'"
        },
        "status": {
            "default-value": true,
            "type":"boolean",
            "default-meaning": "This layer will be marked as active and available for processing",
            "doc": "A property that can be set to false to disable this layer from being processed"
        },
        "minzoom": {
            "default-value": "0",
            "type":"float",
            "default-meaning": "The layer will be visible at the minimum possible scale",
            "doc": "The minimum scale denominator that this layer will be visible at. A layer's visibility is determined by whether its status is true and if the Map scale >= minzoom - 1e-6 and scale < maxzoom + 1e-6"
        },
        "maxzoom": {
            "default-value": "1.79769e+308",
            "type":"float",
            "default-meaning": "The layer will be visible at the maximum possible scale",
            "doc": "The maximum scale denominator that this layer will be visible at. The default is the numeric limit of the C++ double type, which may vary slightly by system, but is likely a massive number like 1.79769e+308 and ensures that this layer will always be visible unless the value is reduced. A layer's visibility is determined by whether its status is true and if the Map scale >= minzoom - 1e-6 and scale < maxzoom + 1e-6"
        },
        "queryable": {
            "default-value": false,
            "type":"boolean",
            "default-meaning": "The layer will not be available for the direct querying of data values",
            "doc": "This property was added for GetFeatureInfo/WMS compatibility and is rarely used. It is off by default meaning that in a WMS context the layer will not be able to be queried unless the property is explicitly set to true"
        },
        "clear-label-cache": {
            "default-value": false,
            "type":"boolean",
            "default-meaning": "The renderer's collision detector cache (used for avoiding duplicate labels and overlapping markers) will not be cleared immediately before processing this layer",
            "doc": "This property, by default off, can be enabled to allow a user to clear the collision detector cache before a given layer is processed. This may be desirable to ensure that a given layers data shows up on the map even if it normally would not because of collisions with previously rendered labels or markers"
        },
        "group-by": {
            "default-value": "",
            "type":"string",
            "default-meaning": "No special layer grouping will be used during rendering",
            "doc": "https://github.com/mapnik/mapnik/wiki/Grouped-rendering"
        },
        "buffer-size": {
            "default-value": "0",
            "type":"float",
            "default-meaning": "No buffer will be used",
            "doc": "Extra tolerance around the Layer extent (in pixels) used to when querying and (potentially) clipping the layer data during rendering"
        },
        "maximum-extent": {
            "default-value": "none",
            "type":"bbox",
            "default-meaning": "No clipping extent will be used",
            "doc": "An extent to be used to limit the bounds used to query this specific layer data during rendering. Should be minx, miny, maxx, maxy in the coordinates of the Layer."
        }
    },
    "symbolizers" : {
        "*": {
            "image-filters": {
                "css": "image-filters",
                "default-value": "none",
                "default-meaning": "no filters",
                "type": "functions",
                "functions": [
                    ["agg-stack-blur", 2],
                    ["emboss", 0],
                    ["blur", 0],
                    ["gray", 0],
                    ["sobel", 0],
                    ["edge-detect", 0],
                    ["x-gradient", 0],
                    ["y-gradient", 0],
                    ["invert", 0],
                    ["sharpen", 0],
                    ["colorize-alpha", -1],
                    ["color-to-alpha", 1],
                    ["scale-hsla", 8],
                    ["buckets", -1],
                    ["category", -1],
                    ["equal", -1],
                    ["headtails", -1],
                    ["jenks", -1],
                    ["quantiles", -1],
                    ["cartocolor", -1],
                    ["colorbrewer", -1],
                    ["range", -1],
                    ["ramp", -1]
                ],
                "doc": "A list of image filters."
            },
            "comp-op": {
                "css": "comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current layer on top of other layers",
                "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "source-over", // added for torque
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "lighter", // added for torque
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            },
            "opacity": {
                "css": "opacity",
                "type": "float",
                "doc": "An alpha value for the style (which means an alpha applied to all features in separate buffer and then composited back to main buffer)",
                "default-value": 1,
                "default-meaning": "no separate buffer will be used and no alpha will be applied to the style after rendering"
            }
        },
        "map": {
            "background-color": {
                "css": "background-color",
                "default-value": "none",
                "default-meaning": "transparent",
                "type": "color",
                "doc": "Map Background color"
            },
            "background-image": {
                "css": "background-image",
                "type": "uri",
                "default-value": "",
                "default-meaning": "transparent",
                "doc": "An image that is repeated below all features on a map as a background.",
                "description": "Map Background image"
            },
            "srs": {
                "css": "srs",
                "type": "string",
                "default-value": "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs",
                "default-meaning": "The proj4 literal of EPSG:4326 is assumed to be the Map's spatial reference and all data from layers within this map will be plotted using this coordinate system. If any layers do not declare an srs value then they will be assumed to be in the same srs as the Map and not transformations will be needed to plot them in the Map's coordinate space",
                "doc": "Map spatial reference (proj4 string)"
            },
            "buffer-size": {
                "css": "buffer-size",
                "default-value": "0",
                "type":"float",
                "default-meaning": "No buffer will be used",
                "doc": "Extra tolerance around the map (in pixels) used to ensure labels crossing tile boundaries are equally rendered in each tile (e.g. cut in each tile). Not intended to be used in combination with \"avoid-edges\"."
            },
            "maximum-extent": {
                "css": "",
                "default-value": "none",
                "type":"bbox",
                "default-meaning": "No clipping extent will be used",
                "doc": "An extent to be used to limit the bounds used to query all layers during rendering. Should be minx, miny, maxx, maxy in the coordinates of the Map."
            },
            "base": {
                "css": "base",
                "default-value": "",
                "default-meaning": "This base path defaults to an empty string meaning that any relative paths to files referenced in styles or layers will be interpreted relative to the application process.",
                "type": "string",
                "doc": "Any relative paths used to reference files will be understood as relative to this directory path if the map is loaded from an in memory object rather than from the filesystem. If the map is loaded from the filesystem and this option is not provided it will be set to the directory of the stylesheet."
            },
            "paths-from-xml": {
                "css": "",
                "default-value": true,
                "default-meaning": "Paths read from XML will be interpreted from the location of the XML",
                "type": "boolean",
                "doc": "value to control whether paths in the XML will be interpreted from the location of the XML or from the working directory of the program that calls load_map()"
            },
            "minimum-version": {
                "css": "",
                "default-value": "none",
                "default-meaning": "Mapnik version will not be detected and no error will be thrown about compatibility",
                "type": "string",
                "doc": "The minumum Mapnik version (e.g. 0.7.2) needed to use certain functionality in the stylesheet"
            },
            "font-directory": {
                "css": "font-directory",
                "type": "uri",
                "default-value": "none",
                "default-meaning": "No map-specific fonts will be registered",
                "doc": "Path to a directory which holds fonts which should be registered when the Map is loaded (in addition to any fonts that may be automatically registered)."
            }
        },
        "polygon": {
            "fill": {
                "css": "polygon-fill",
                "type": "color",
                "default-value": "rgba(128,128,128,1)",
                "default-meaning": "gray and fully opaque (alpha = 1), same as rgb(128,128,128)",
                "doc": "Fill color to assign to a polygon",
                "expression": true
            },
            "fill-opacity": {
                "css": "polygon-opacity",
                "type": "float",
                "doc": "The opacity of the polygon",
                "default-value": 1,
                "default-meaning": "opaque",
                "expression": true
            },
            "gamma": {
                "css": "polygon-gamma",
                "type": "float",
                "default-value": 1,
                "default-meaning": "fully antialiased",
                "range": "0-1",
                "doc": "Level of antialiasing of polygon edges"
            },
            "gamma-method": {
                "css": "polygon-gamma-method",
                "type": [
                    "power",
                    "linear",
                    "none",
                    "threshold",
                    "multiply"
                ],
                "default-value": "power",
                "default-meaning": "pow(x,gamma) is used to calculate pixel gamma, which produces slightly smoother line and polygon antialiasing than the 'linear' method, while other methods are usually only used to disable AA",
                "doc": "An Antigrain Geometry specific rendering hint to control the quality of antialiasing. Under the hood in Mapnik this method is used in combination with the 'gamma' value (which defaults to 1). The methods are in the AGG source at https://github.com/mapnik/mapnik/blob/master/deps/agg/include/agg_gamma_functions.h"
            },
            "clip": {
                "css": "polygon-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "smooth": {
                "css": "polygon-smooth",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no smoothing",
                "range": "0-1",
                "doc": "Smooths out geometry angles. 0 is no smoothing, 1 is fully smoothed. Values greater than 1 will produce wild, looping geometries."
            },
            "geometry-transform": {
                "css": "polygon-geometry-transform",
                "type": "functions",
                "default-value": "none",
                "default-meaning": "geometry will not be transformed",
                "doc": "Allows transformation functions to be applied to the geometry.",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ]
            },
            "comp-op": {
                "css": "polygon-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "line": {
            "stroke": {
                "css": "line-color",
                "default-value": "rgba(0,0,0,1)",
                "type": "color",
                "default-meaning": "black and fully opaque (alpha = 1), same as rgb(0,0,0)",
                "doc": "The color of a drawn line",
                "expression": true
            },
            "stroke-width": {
                "css": "line-width",
                "default-value": 1,
                "type": "float",
                "doc": "The width of a line in pixels",
                "expression": true
            },
            "stroke-opacity": {
                "css": "line-opacity",
                "default-value": 1,
                "type": "float",
                "default-meaning": "opaque",
                "doc": "The opacity of a line"
            },
            "stroke-linejoin": {
                "css": "line-join",
                "default-value": "miter",
                "type": [
                    "miter",
                    "round",
                    "bevel"
                ],
                "doc": "The behavior of lines when joining"
            },
            "stroke-linecap": {
                "css": "line-cap",
                "default-value": "butt",
                "type": [
                    "butt",
                    "round",
                    "square"
                ],
                "doc": "The display of line endings"
            },
            "stroke-gamma": {
                "css": "line-gamma",
                "type": "float",
                "default-value": 1,
                "default-meaning": "fully antialiased",
                "range": "0-1",
                "doc": "Level of antialiasing of stroke line"
            },
            "stroke-gamma-method": {
                "css": "line-gamma-method",
                "type": [
                    "power",
                    "linear",
                    "none",
                    "threshold",
                    "multiply"
                ],
                "default-value": "power",
                "default-meaning": "pow(x,gamma) is used to calculate pixel gamma, which produces slightly smoother line and polygon antialiasing than the 'linear' method, while other methods are usually only used to disable AA",
                "doc": "An Antigrain Geometry specific rendering hint to control the quality of antialiasing. Under the hood in Mapnik this method is used in combination with the 'gamma' value (which defaults to 1). The methods are in the AGG source at https://github.com/mapnik/mapnik/blob/master/deps/agg/include/agg_gamma_functions.h"
            },
            "stroke-dasharray": {
                "css": "line-dasharray",
                "type": "numbers",
                "doc": "A pair of length values [a,b], where (a) is the dash length and (b) is the gap length respectively. More than two values are supported for more complex patterns.",
                "default-value": "none",
                "default-meaning": "solid line"
            },
            "stroke-dashoffset": {
                "css": "line-dash-offset",
                "type": "numbers",
                "doc": "valid parameter but not currently used in renderers (only exists for experimental svg support in Mapnik which is not yet enabled)",
                "default-value": "none",
                "default-meaning": "solid line"
            },
            "stroke-miterlimit": {
                "css": "line-miterlimit",
                "type": "float",
                "doc": "The limit on the ratio of the miter length to the stroke-width. Used to automatically convert miter joins to bevel joins for sharp angles to avoid the miter extending beyond the thickness of the stroking path. Normally will not need to be set, but a larger value can sometimes help avoid jaggy artifacts.",
                "default-value": 4.0,
                "default-meaning": "Will auto-convert miters to bevel line joins when theta is less than 29 degrees as per the SVG spec: 'miterLength / stroke-width = 1 / sin ( theta / 2 )'"
            },
            "clip": {
                "css": "line-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "smooth": {
                "css": "line-smooth",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no smoothing",
                "range": "0-1",
                "doc": "Smooths out geometry angles. 0 is no smoothing, 1 is fully smoothed. Values greater than 1 will produce wild, looping geometries."
            },
            "offset": {
                "css": "line-offset",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no offset",
                "doc": "Offsets a line a number of pixels parallel to its actual path. Postive values move the line left, negative values move it right (relative to the directionality of the line)."
            },
            "rasterizer": {
                "css": "line-rasterizer",
                "type": [
                    "full",
                    "fast"
                ],
                "default-value": "full",
                "doc": "Exposes an alternate AGG rendering method that sacrifices some accuracy for speed."
            },
            "geometry-transform": {
                "css": "line-geometry-transform",
                "type": "functions",
                "default-value": "none",
                "default-meaning": "geometry will not be transformed",
                "doc": "Allows transformation functions to be applied to the geometry.",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ]
            },
            "comp-op": {
                "css": "line-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "markers": {
            "file": {
                "css": "marker-file",
                "doc": "An SVG file that this marker shows at each placement. If no file is given, the marker will show an ellipse.",
                "default-value": "",
                "default-meaning": "An ellipse or circle, if width equals height",
                "type": "uri",
                "expression": true
            },
            "opacity": {
                "css": "marker-opacity",
                "doc": "The overall opacity of the marker, if set, overrides both the opacity of both the fill and stroke",
                "default-value": 1,
                "default-meaning": "The stroke-opacity and fill-opacity will be used",
                "type": "float"
            },
            "fill-opacity": {
                "css": "marker-fill-opacity",
                "doc": "The fill opacity of the marker",
                "default-value": 1,
                "default-meaning": "opaque",
                "type": "float"
            },
            "stroke": {
                "css": "marker-line-color",
                "doc": "The color of the stroke around a marker shape.",
                "default-value": "black",
                "type": "color"
            },
            "stroke-width": {
                "css": "marker-line-width",
                "doc": "The width of the stroke around a marker shape, in pixels. This is positioned on the boundary, so high values can cover the area itself.",
                "type": "float"
            },
            "stroke-opacity": {
                "css": "marker-line-opacity",
                "default-value": 1,
                "default-meaning": "opaque",
                "doc": "The opacity of a line",
                "type": "float"
            },
            "placement": {
                "css": "marker-placement",
                "type": [
                    "point",
                    "line",
                    "interior"
                ],
                "default-value": "point",
                "default-meaning": "Place markers at the center point (centroid) of the geometry",
                "doc": "Attempt to place markers on a point, in the center of a polygon, or if markers-placement:line, then multiple times along a line. 'interior' placement can be used to ensure that points placed on polygons are forced to be inside the polygon interior"
            },
            "multi-policy": {
                "css": "marker-multi-policy",
                "type": [
                    "each",
                    "whole",
                    "largest"
                ],
                "default-value": "each",
                "default-meaning": "If a feature contains multiple geometries and the placement type is either point or interior then a marker will be rendered for each",
                "doc": "A special setting to allow the user to control rendering behavior for 'multi-geometries' (when a feature contains multiple geometries). This setting does not apply to markers placed along lines. The 'each' policy is default and means all geometries will get a marker. The 'whole' policy means that the aggregate centroid between all geometries will be used. The 'largest' policy means that only the largest (by bounding box areas) feature will get a rendered marker (this is how text labeling behaves by default)."
            },
            "marker-type": {
                "css": "marker-type",
                "type": [
                    "arrow",
                    "ellipse",
                    "rectangle"
                ],
                "default-value": "ellipse",
                "doc": "The default marker-type. If a SVG file is not given as the marker-file parameter, the renderer provides either an arrow or an ellipse (a circle if height is equal to width)"
            },
            "width": {
                "css": "marker-width",
                "default-value": 10,
                "doc": "The width of the marker, if using one of the default types.",
                "type": "float",
                "expression": true
            },
            "height": {
                "css": "marker-height",
                "default-value": 10,
                "doc": "The height of the marker, if using one of the default types.",
                "type": "float",
                "expression": true
            },
            "fill": {
                "css": "marker-fill",
                "default-value": "blue",
                "doc": "The color of the area of the marker.",
                "type": "color",
                "expression": true
            },
            "allow-overlap": {
                "css": "marker-allow-overlap",
                "type": "boolean",
                "default-value": false,
                "doc": "Control whether overlapping markers are shown or hidden.",
                "default-meaning": "Do not allow makers to overlap with each other - overlapping markers will not be shown."
            },
            "ignore-placement": {
                "css": "marker-ignore-placement",
                "type": "boolean",
                "default-value": false,
                "default-meaning": "do not store the bbox of this geometry in the collision detector cache",
                "doc": "value to control whether the placement of the feature will prevent the placement of other features"
            },
            "spacing": {
                "css": "marker-spacing",
                "doc": "Space between repeated labels",
                "default-value": 100,
                "type": "float"
            },
            "max-error": {
                "css": "marker-max-error",
                "type": "float",
                "default-value": 0.2,
                "doc": "The maximum difference between actual marker placement and the marker-spacing parameter. Setting a high value can allow the renderer to try to resolve placement conflicts with other symbolizers."
            },
            "transform": {
                "css": "marker-transform",
                "type": "functions",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ],
                "default-value": "",
                "default-meaning": "No transformation",
                "doc": "SVG transformation definition"
            },
            "clip": {
                "css": "marker-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "smooth": {
                "css": "marker-smooth",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no smoothing",
                "range": "0-1",
                "doc": "Smooths out geometry angles. 0 is no smoothing, 1 is fully smoothed. Values greater than 1 will produce wild, looping geometries."
            },
            "geometry-transform": {
                "css": "marker-geometry-transform",
                "type": "functions",
                "default-value": "none",
                "default-meaning": "geometry will not be transformed",
                "doc": "Allows transformation functions to be applied to the geometry.",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ]
            },
            "comp-op": {
                "css": "marker-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "shield": {
            "name": {
                "css": "shield-name",
                "type": "string",
                "expression": true,
                "serialization": "content",
                "doc": "Value to use for a shield\"s text label. Data columns are specified using brackets like [column_name]"
            },
            "file": {
                "css": "shield-file",
                "required": true,
                "type": "uri",
                "default-value": "none",
                "doc": "Image file to render behind the shield text"
            },
            "face-name": {
                "css": "shield-face-name",
                "type": "string",
                "validate": "font",
                "doc": "Font name and style to use for the shield text",
                "default-value": "",
                "required": true
            },
            "unlock-image": {
                "css": "shield-unlock-image",
                "type": "boolean",
                "doc": "This parameter should be set to true if you are trying to position text beside rather than on top of the shield image",
                "default-value": false,
                "default-meaning": "text alignment relative to the shield image uses the center of the image as the anchor for text positioning."
            },
            "size": {
                "css": "shield-size",
                "type": "float",
                "doc": "The size of the shield text in pixels"
            },
            "fill": {
                "css": "shield-fill",
                "type": "color",
                "doc": "The color of the shield text"
            },
            "placement": {
                "css": "shield-placement",
                "type": [
                    "point",
                    "line",
                    "vertex",
                    "interior"
                ],
                "default-value": "point",
                "doc": "How this shield should be placed. Point placement attempts to place it on top of points, line places along lines multiple times per feature, vertex places on the vertexes of polygons, and interior attempts to place inside of polygons."
            },
            "avoid-edges": {
                "css": "shield-avoid-edges",
                "doc": "Tell positioning algorithm to avoid labeling near intersection edges.",
                "type": "boolean",
                "default-value": false
            },
            "allow-overlap": {
                "css": "shield-allow-overlap",
                "type": "boolean",
                "default-value": false,
                "doc": "Control whether overlapping shields are shown or hidden.",
                "default-meaning": "Do not allow shields to overlap with other map elements already placed."
            },
            "minimum-distance": {
                "css": "shield-min-distance",
                "type": "float",
                "default-value": 0,
                "doc": "Minimum distance to the next shield symbol, not necessarily the same shield."
            },
            "spacing": {
                "css": "shield-spacing",
                "type": "float",
                "default-value": 0,
                "doc": "The spacing between repeated occurrences of the same shield on a line"
            },
            "minimum-padding": {
                "css": "shield-min-padding",
                "default-value": 0,
                "doc": "Determines the minimum amount of padding that a shield gets relative to other shields",
                "type": "float"
            },
            "wrap-width": {
                "css": "shield-wrap-width",
                "type": "unsigned",
                "default-value": 0,
                "doc": "Length of a chunk of text in characters before wrapping text"
            },
            "wrap-before": {
                "css": "shield-wrap-before",
                "type": "boolean",
                "default-value": false,
                "doc": "Wrap text before wrap-width is reached. If false, wrapped lines will be a bit longer than wrap-width."
            },
            "wrap-character": {
                "css": "shield-wrap-character",
                "type": "string",
                "default-value": " ",
                "doc": "Use this character instead of a space to wrap long names."
            },
            "halo-fill": {
                "css": "shield-halo-fill",
                "type": "color",
                "default-value": "#FFFFFF",
                "default-meaning": "white",
                "doc": "Specifies the color of the halo around the text."
            },
            "halo-radius": {
                "css": "shield-halo-radius",
                "doc": "Specify the radius of the halo in pixels",
                "default-value": 0,
                "default-meaning": "no halo",
                "type": "float"
            },
            "character-spacing": {
                "css": "shield-character-spacing",
                "type": "unsigned",
                "default-value": 0,
                "doc": "Horizontal spacing between characters (in pixels). Currently works for point placement only, not line placement."
            },
            "line-spacing": {
                "css": "shield-line-spacing",
                "doc": "Vertical spacing between lines of multiline labels (in pixels)",
                "type": "unsigned"
            },
            "dx": {
                "css": "shield-text-dx",
                "type": "float",
                "doc": "Displace text within shield by fixed amount, in pixels, +/- along the X axis.  A positive value will shift the text right",
                "default-value": 0
            },
            "dy": {
                "css": "shield-text-dy",
                "type": "float",
                "doc": "Displace text within shield by fixed amount, in pixels, +/- along the Y axis.  A positive value will shift the text down",
                "default-value": 0
            },
            "shield-dx": {
                "css": "shield-dx",
                "type": "float",
                "doc": "Displace shield by fixed amount, in pixels, +/- along the X axis.  A positive value will shift the text right",
                "default-value": 0
            },
            "shield-dy": {
                "css": "shield-dy",
                "type": "float",
                "doc": "Displace shield by fixed amount, in pixels, +/- along the Y axis.  A positive value will shift the text down",
                "default-value": 0
            },
            "opacity": {
                "css": "shield-opacity",
                "type": "float",
                "doc": "(Default 1.0) - opacity of the image used for the shield",
                "default-value": 1
            },
            "text-opacity": {
                "css": "shield-text-opacity",
                "type": "float",
                "doc": "(Default 1.0) - opacity of the text placed on top of the shield",
                "default-value": 1
            },
            "horizontal-alignment": {
                "css": "shield-horizontal-alignment",
                "type": [
                    "left",
                    "middle",
                    "right",
                    "auto"
                ],
                "doc": "The shield's horizontal alignment from its centerpoint",
                "default-value": "auto"
            },
            "vertical-alignment": {
                "css": "shield-vertical-alignment",
                "type": [
                    "top",
                    "middle",
                    "bottom",
                    "auto"
                ],
                "doc": "The shield's vertical alignment from its centerpoint",
                "default-value": "middle"
            },
            "text-transform": {
                "css": "shield-text-transform",
                "type": [
                    "none",
                    "uppercase",
                    "lowercase",
                    "capitalize"
                ],
                "doc": "Transform the case of the characters",
                "default-value": "none"
            },
            "justify-alignment": {
                "css": "shield-justify-alignment",
                "type": [
                    "left",
                    "center",
                    "right",
                    "auto"
                ],
                "doc": "Define how text in a shield's label is justified",
                "default-value": "auto"
            },
            "clip": {
                "css": "shield-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "comp-op": {
                "css": "shield-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "line-pattern": {
            "file": {
                "css": "line-pattern-file",
                "type": "uri",
                "default-value": "none",
                "required": true,
                "doc": "An image file to be repeated and warped along a line",
                "expression": true
            },
            "clip": {
                "css": "line-pattern-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "smooth": {
                "css": "line-pattern-smooth",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no smoothing",
                "range": "0-1",
                "doc": "Smooths out geometry angles. 0 is no smoothing, 1 is fully smoothed. Values greater than 1 will produce wild, looping geometries."
            },
            "geometry-transform": {
                "css": "line-pattern-geometry-transform",
                "type": "functions",
                "default-value": "none",
                "default-meaning": "geometry will not be transformed",
                "doc": "Allows transformation functions to be applied to the geometry.",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ]
            },
            "comp-op": {
                "css": "line-pattern-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "polygon-pattern": {
            "file": {
                "css": "polygon-pattern-file",
                "type": "uri",
                "default-value": "none",
                "required": true,
                "doc": "Image to use as a repeated pattern fill within a polygon",
                "expression": true
            },
            "alignment": {
                "css": "polygon-pattern-alignment",
                "type": [
                    "local",
                    "global"
                ],
                "default-value": "local",
                "doc": "Specify whether to align pattern fills to the layer or to the map."
            },
            "gamma": {
                "css": "polygon-pattern-gamma",
                "type": "float",
                "default-value": 1,
                "default-meaning": "fully antialiased",
                "range": "0-1",
                "doc": "Level of antialiasing of polygon pattern edges"
            },
            "opacity": {
                "css": "polygon-pattern-opacity",
                "type": "float",
                "doc": "(Default 1.0) - Apply an opacity level to the image used for the pattern",
                "default-value": 1,
                "default-meaning": "The image is rendered without modifications"
            },
            "clip": {
                "css": "polygon-pattern-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "smooth": {
                "css": "polygon-pattern-smooth",
                "type": "float",
                "default-value": 0,
                "default-meaning": "no smoothing",
                "range": "0-1",
                "doc": "Smooths out geometry angles. 0 is no smoothing, 1 is fully smoothed. Values greater than 1 will produce wild, looping geometries."
            },
            "geometry-transform": {
                "css": "polygon-pattern-geometry-transform",
                "type": "functions",
                "default-value": "none",
                "default-meaning": "geometry will not be transformed",
                "doc": "Allows transformation functions to be applied to the geometry.",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ]
            },
            "comp-op": {
                "css": "polygon-pattern-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "raster": {
            "opacity": {
                "css": "raster-opacity",
                "default-value": 1,
                "default-meaning": "opaque",
                "type": "float",
                "doc": "The opacity of the raster symbolizer on top of other symbolizers."
            },
            "filter-factor": {
                "css": "raster-filter-factor",
                "default-value": -1,
                "default-meaning": "Allow the datasource to choose appropriate downscaling.",
                "type": "float",
                "doc": "This is used by the Raster or Gdal datasources to pre-downscale images using overviews. Higher numbers can sometimes cause much better scaled image output, at the cost of speed."
            },
            "scaling": {
                "css": "raster-scaling",
                "type": [
                    "near",
                    "fast",
                    "bilinear",
                    "bilinear8",
                    "bicubic",
                    "spline16",
                    "spline36",
                    "hanning",
                    "hamming",
                    "hermite",
                    "kaiser",
                    "quadric",
                    "catrom",
                    "gaussian",
                    "bessel",
                    "mitchell",
                    "sinc",
                    "lanczos",
                    "blackman"
                ],
                "default-value": "near",
                "doc": "The scaling algorithm used to making different resolution versions of this raster layer. Bilinear is a good compromise between speed and accuracy, while lanczos gives the highest quality."
            },
            "mesh-size": {
                "css": "raster-mesh-size",
                "default-value": 16,
                "default-meaning": "Reprojection mesh will be 1/16 of the resolution of the source image",
                "type": "unsigned",
                "doc": "A reduced resolution mesh is used for raster reprojection, and the total image size is divided by the mesh-size to determine the quality of that mesh. Values for mesh-size larger than the default will result in faster reprojection but might lead to distortion."
            },
            "comp-op": {
                "css": "raster-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "point": {
            "file": {
                "css": "point-file",
                "type": "uri",
                "required": false,
                "default-value": "none",
                "doc": "Image file to represent a point"
            },
            "allow-overlap": {
                "css": "point-allow-overlap",
                "type": "boolean",
                "default-value": false,
                "doc": "Control whether overlapping points are shown or hidden.",
                "default-meaning": "Do not allow points to overlap with each other - overlapping markers will not be shown."
            },
            "ignore-placement": {
                "css": "point-ignore-placement",
                "type": "boolean",
                "default-value": false,
                "default-meaning": "do not store the bbox of this geometry in the collision detector cache",
                "doc": "value to control whether the placement of the feature will prevent the placement of other features"
            },
            "opacity": {
                "css": "point-opacity",
                "type": "float",
                "default-value": 1.0,
                "default-meaning": "Fully opaque",
                "doc": "A value from 0 to 1 to control the opacity of the point"
            },
            "placement": {
                "css": "point-placement",
                "type": [
                    "centroid",
                    "interior"
                ],
                "doc": "How this point should be placed. Centroid calculates the geometric center of a polygon, which can be outside of it, while interior always places inside of a polygon.",
                "default-value": "centroid"
            },
            "transform": {
                "css": "point-transform",
                "type": "functions",
                "functions": [
                    ["matrix", 6],
                    ["translate", 2],
                    ["scale", 2],
                    ["rotate", 3],
                    ["skewX", 1],
                    ["skewY", 1]
                ],
                "default-value": "",
                "default-meaning": "No transformation",
                "doc": "SVG transformation definition"
            },
            "comp-op": {
                "css": "point-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "text": {
            "name": {
                "css": "text-name",
                "type": "string",
                "expression": true,
                "required": true,
                "default-value": "",
                "serialization": "content",
                "doc": "Value to use for a text label. Data columns are specified using brackets like [column_name]"
            },
            "face-name": {
                "css": "text-face-name",
                "type": "string",
                "validate": "font",
                "doc": "Font name and style to render a label in",
                "required": true
            },
            "size": {
                "css": "text-size",
                "type": "float",
                "default-value": 10,
                "doc": "Text size in pixels"
            },
            "text-ratio": {
                "css": "text-ratio",
                "doc": "Define the amount of text (of the total) present on successive lines when wrapping occurs",
                "default-value": 0,
                "type": "unsigned"
            },
            "wrap-width": {
                "css": "text-wrap-width",
                "doc": "Length of a chunk of text in characters before wrapping text",
                "default-value": 0,
                "type": "unsigned"
            },
            "wrap-before": {
                "css": "text-wrap-before",
                "type": "boolean",
                "default-value": false,
                "doc": "Wrap text before wrap-width is reached. If false, wrapped lines will be a bit longer than wrap-width."
            },
            "wrap-character": {
                "css": "text-wrap-character",
                "type": "string",
                "default-value": " ",
                "doc": "Use this character instead of a space to wrap long text."
            },
            "spacing": {
                "css": "text-spacing",
                "type": "unsigned",
                "doc": "Distance between repeated text labels on a line (aka. label-spacing)"
            },
            "character-spacing": {
                "css": "text-character-spacing",
                "type": "float",
                "default-value": 0,
                "doc": "Horizontal spacing adjustment between characters in pixels"
            },
            "line-spacing": {
                "css": "text-line-spacing",
                "default-value": 0,
                "type": "unsigned",
                "doc": "Vertical spacing adjustment between lines in pixels"
            },
            "label-position-tolerance": {
                "css": "text-label-position-tolerance",
                "default-value": 0,
                "type": "unsigned",
                "doc": "Allows the label to be displaced from its ideal position by a number of pixels (only works with placement:line)"
            },
            "max-char-angle-delta": {
                "css": "text-max-char-angle-delta",
                "type": "float",
                "default-value": "22.5",
                "doc": "The maximum angle change, in degrees, allowed between adjacent characters in a label. This value internally is converted to radians to the default is 22.5*math.pi/180.0. The higher the value the fewer labels will be placed around around sharp corners."
            },
            "fill": {
                "css": "text-fill",
                "doc": "Specifies the color for the text",
                "default-value": "#000000",
                "type": "color"
            },
            "opacity": {
                "css": "text-opacity",
                "doc": "A number from 0 to 1 specifying the opacity for the text",
                "default-value": 1.0,
                "default-meaning": "Fully opaque",
                "type": "float"
            },
            "halo-fill": {
                "css": "text-halo-fill",
                "type": "color",
                "default-value": "#FFFFFF",
                "default-meaning": "white",
                "doc": "Specifies the color of the halo around the text."
            },
            "halo-radius": {
                "css": "text-halo-radius",
                "doc": "Specify the radius of the halo in pixels",
                "default-value": 0,
                "default-meaning": "no halo",
                "type": "float"
            },
            "dx": {
                "css": "text-dx",
                "type": "float",
                "doc": "Displace text by fixed amount, in pixels, +/- along the X axis.  A positive value will shift the text right",
                "default-value": 0
            },
            "dy": {
                "css": "text-dy",
                "type": "float",
                "doc": "Displace text by fixed amount, in pixels, +/- along the Y axis.  A positive value will shift the text down",
                "default-value": 0
            },
            "vertical-alignment": {
                "css": "text-vertical-alignment",
                "type": [
                  "top",
                  "middle",
                  "bottom",
                  "auto"
                ],
                "doc": "Position of label relative to point position.",
                "default-value": "auto",
                "default-meaning": "Default affected by value of dy; \"bottom\" for dy>0, \"top\" for dy<0."
            },
            "avoid-edges": {
                "css": "text-avoid-edges",
                "doc": "Tell positioning algorithm to avoid labeling near intersection edges.",
                "default-value": false,
                "type": "boolean"
            },
            "minimum-distance": {
                "css": "text-min-distance",
                "doc": "Minimum permitted distance to the next text symbolizer.",
                "type": "float"
            },
            "minimum-padding": {
                "css": "text-min-padding",
                "doc": "Determines the minimum amount of padding that a text symbolizer gets relative to other text",
                "type": "float"
            },
            "minimum-path-length": {
                "css": "text-min-path-length",
                "type": "float",
                "default-value": 0,
                "default-meaning": "place labels on all paths",
                "doc": "Place labels only on paths longer than this value."
            },
            "allow-overlap": {
                "css": "text-allow-overlap",
                "type": "boolean",
                "default-value": false,
                "doc": "Control whether overlapping text is shown or hidden.",
                "default-meaning": "Do not allow text to overlap with other text - overlapping markers will not be shown."
            },
            "orientation": {
                "css": "text-orientation",
                "type": "float",
                "expression": true,
                "doc": "Rotate the text."
            },
            "placement": {
                "css": "text-placement",
                "type": [
                    "point",
                    "line",
                    "vertex",
                    "interior"
                ],
                "default-value": "point",
                "doc": "Control the style of placement of a point versus the geometry it is attached to."
            },
            "placement-type": {
                "css": "text-placement-type",
                "doc": "Re-position and/or re-size text to avoid overlaps. \"simple\" for basic algorithm (using text-placements string,) \"dummy\" to turn this feature off.",
                "type": [
                    "dummy",
                    "simple"
                ],
                "default-value": "dummy"
            },
            "placements": {
                "css": "text-placements",
                "type": "string",
                "default-value": "",
                "doc": "If \"placement-type\" is set to \"simple\", use this \"POSITIONS,[SIZES]\" string. An example is `text-placements: \"E,NE,SE,W,NW,SW\";` "
            },
            "text-transform": {
                "css": "text-transform",
                "type": [
                    "none",
                    "uppercase",
                    "lowercase",
                    "capitalize"
                ],
                "doc": "Transform the case of the characters",
                "default-value": "none"
            },
            "horizontal-alignment": {
                "css": "text-horizontal-alignment",
                "type": [
                    "left",
                    "middle",
                    "right",
                    "auto"
                ],
                "doc": "The text's horizontal alignment from its centerpoint",
                "default-value": "auto"
            },
            "justify-alignment": {
                "css": "text-align",
                "type": [
                    "left",
                    "right",
                    "center",
                    "auto"
                ],
                "doc": "Define how text is justified",
                "default-value": "auto",
                "default-meaning": "Auto alignment means that text will be centered by default except when using the `placement-type` parameter - in that case either right or left justification will be used automatically depending on where the text could be fit given the `text-placements` directives"
            },
            "clip": {
                "css": "text-clip",
                "type": "boolean",
                "default-value": true,
                "default-meaning": "geometry will be clipped to map bounds before rendering",
                "doc": "geometries are clipped to map bounds by default for best rendering performance. In some cases users may wish to disable this to avoid rendering artifacts."
            },
            "comp-op": {
                "css": "text-comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current symbolizer on top of other symbolizer",
                "doc": "Composite operation. This defines how this symbolizer should behave relative to symbolizers atop or below it.",
                "type": ["clear",
                    "src",
                    "dst",
                    "src-over",
                    "dst-over",
                    "src-in",
                    "dst-in",
                    "src-out",
                    "dst-out",
                    "src-atop",
                    "dst-atop",
                    "xor",
                    "plus",
                    "minus",
                    "multiply",
                    "screen",
                    "overlay",
                    "darken",
                    "lighten",
                    "color-dodge",
                    "color-burn",
                    "hard-light",
                    "soft-light",
                    "difference",
                    "exclusion",
                    "contrast",
                    "invert",
                    "invert-rgb",
                    "grain-merge",
                    "grain-extract",
                    "hue",
                    "saturation",
                    "color",
                    "value"
                ]
            }
        },
        "building": {
            "fill": {
                "css": "building-fill",
                "default-value": "#FFFFFF",
                "doc": "The color of the buildings walls.",
                "type": "color"
            },
            "fill-opacity": {
                "css": "building-fill-opacity",
                "type": "float",
                "doc": "The opacity of the building as a whole, including all walls.",
                "default-value": 1
            },
            "height": {
                "css": "building-height",
                "doc": "The height of the building in pixels.",
                "type": "float",
                "expression": true,
                "default-value": "0"
            }
        },
        "torque": {
          "-torque-clear-color": {
              "css": "-torque-clear-color",
              "type": "color",
              "default-value": "rgba(255, 255, 255, 0)",
              "default-meaning": "full clear",
              "doc": "color used to clear canvas on each frame"
          },
          "-torque-frame-count": {
              "css": "-torque-frame-count",
              "default-value": "128",
              "type":"float",
              "default-meaning": "the data is broken into 128 time frames",
              "doc": "Number of animation steps/frames used in the animation. If the data contains a fewere number of total frames, the lesser value will be used."
          },
          "-torque-resolution": {
              "css": "-torque-resolution",
              "default-value": "2",
              "type":"float",
              "default-meaning": "",
              "doc": "Spatial resolution in pixels. A resolution of 1 means no spatial aggregation of the data. Any other resolution of N results in spatial aggregation into cells of NxN pixels. The value N must be power of 2"
          },
          "-torque-animation-duration": {
              "css": "-torque-animation-duration",
              "default-value": "30",
              "type":"float",
              "default-meaning": "the animation lasts 30 seconds",
              "doc": "Animation duration in seconds"
          },
          "-torque-aggregation-function": {
              "css": "-torque-aggregation-function",
              "default-value": "count(cartodb_id)",
              "type": "string",
              "default-meaning": "the value for each cell is the count of points in that cell",
              "doc": "A function used to calculate a value from the aggregate data for each cell. See -torque-resolution"
          },
          "-torque-time-attribute": {
              "css": "-torque-time-attribute",
              "default-value": "time",
              "type": "string",
              "default-meaning": "the data column in your table that is of a time based type",
              "doc": "The table column that contains the time information used create the animation"
          },
          "-torque-data-aggregation": {
              "css": "-torque-data-aggregation",
              "default-value": "linear",
              "type": [
                "linear",
                "cumulative"
              ],
              "default-meaning": "previous values are discarded",
              "doc": "A linear animation will discard previous values while a cumulative animation will accumulate them until it restarts"
          }
        }
    },
    "colors": {
        "aliceblue":  [240, 248, 255],
        "antiquewhite":  [250, 235, 215],
        "aqua":  [0, 255, 255],
        "aquamarine":  [127, 255, 212],
        "azure":  [240, 255, 255],
        "beige":  [245, 245, 220],
        "bisque":  [255, 228, 196],
        "black":  [0, 0, 0],
        "blanchedalmond":  [255,235,205],
        "blue":  [0, 0, 255],
        "blueviolet":  [138, 43, 226],
        "brown":  [165, 42, 42],
        "burlywood":  [222, 184, 135],
        "cadetblue":  [95, 158, 160],
        "chartreuse":  [127, 255, 0],
        "chocolate":  [210, 105, 30],
        "coral":  [255, 127, 80],
        "cornflowerblue":  [100, 149, 237],
        "cornsilk":  [255, 248, 220],
        "crimson":  [220, 20, 60],
        "cyan":  [0, 255, 255],
        "darkblue":  [0, 0, 139],
        "darkcyan":  [0, 139, 139],
        "darkgoldenrod":  [184, 134, 11],
        "darkgray":  [169, 169, 169],
        "darkgreen":  [0, 100, 0],
        "darkgrey":  [169, 169, 169],
        "darkkhaki":  [189, 183, 107],
        "darkmagenta":  [139, 0, 139],
        "darkolivegreen":  [85, 107, 47],
        "darkorange":  [255, 140, 0],
        "darkorchid":  [153, 50, 204],
        "darkred":  [139, 0, 0],
        "darksalmon":  [233, 150, 122],
        "darkseagreen":  [143, 188, 143],
        "darkslateblue":  [72, 61, 139],
        "darkslategrey":  [47, 79, 79],
        "darkturquoise":  [0, 206, 209],
        "darkviolet":  [148, 0, 211],
        "deeppink":  [255, 20, 147],
        "deepskyblue":  [0, 191, 255],
        "dimgray":  [105, 105, 105],
        "dimgrey":  [105, 105, 105],
        "dodgerblue":  [30, 144, 255],
        "firebrick":  [178, 34, 34],
        "floralwhite":  [255, 250, 240],
        "forestgreen":  [34, 139, 34],
        "fuchsia":  [255, 0, 255],
        "gainsboro":  [220, 220, 220],
        "ghostwhite":  [248, 248, 255],
        "gold":  [255, 215, 0],
        "goldenrod":  [218, 165, 32],
        "gray":  [128, 128, 128],
        "grey":  [128, 128, 128],
        "green":  [0, 128, 0],
        "greenyellow":  [173, 255, 47],
        "honeydew":  [240, 255, 240],
        "hotpink":  [255, 105, 180],
        "indianred":  [205, 92, 92],
        "indigo":  [75, 0, 130],
        "ivory":  [255, 255, 240],
        "khaki":  [240, 230, 140],
        "lavender":  [230, 230, 250],
        "lavenderblush":  [255, 240, 245],
        "lawngreen":  [124, 252, 0],
        "lemonchiffon":  [255, 250, 205],
        "lightblue":  [173, 216, 230],
        "lightcoral":  [240, 128, 128],
        "lightcyan":  [224, 255, 255],
        "lightgoldenrodyellow":  [250, 250, 210],
        "lightgray":  [211, 211, 211],
        "lightgreen":  [144, 238, 144],
        "lightgrey":  [211, 211, 211],
        "lightpink":  [255, 182, 193],
        "lightsalmon":  [255, 160, 122],
        "lightseagreen":  [32, 178, 170],
        "lightskyblue":  [135, 206, 250],
        "lightslategray":  [119, 136, 153],
        "lightslategrey":  [119, 136, 153],
        "lightsteelblue":  [176, 196, 222],
        "lightyellow":  [255, 255, 224],
        "lime":  [0, 255, 0],
        "limegreen":  [50, 205, 50],
        "linen":  [250, 240, 230],
        "magenta":  [255, 0, 255],
        "maroon":  [128, 0, 0],
        "mediumaquamarine":  [102, 205, 170],
        "mediumblue":  [0, 0, 205],
        "mediumorchid":  [186, 85, 211],
        "mediumpurple":  [147, 112, 219],
        "mediumseagreen":  [60, 179, 113],
        "mediumslateblue":  [123, 104, 238],
        "mediumspringgreen":  [0, 250, 154],
        "mediumturquoise":  [72, 209, 204],
        "mediumvioletred":  [199, 21, 133],
        "midnightblue":  [25, 25, 112],
        "mintcream":  [245, 255, 250],
        "mistyrose":  [255, 228, 225],
        "moccasin":  [255, 228, 181],
        "navajowhite":  [255, 222, 173],
        "navy":  [0, 0, 128],
        "oldlace":  [253, 245, 230],
        "olive":  [128, 128, 0],
        "olivedrab":  [107, 142, 35],
        "orange":  [255, 165, 0],
        "orangered":  [255, 69, 0],
        "orchid":  [218, 112, 214],
        "palegoldenrod":  [238, 232, 170],
        "palegreen":  [152, 251, 152],
        "paleturquoise":  [175, 238, 238],
        "palevioletred":  [219, 112, 147],
        "papayawhip":  [255, 239, 213],
        "peachpuff":  [255, 218, 185],
        "peru":  [205, 133, 63],
        "pink":  [255, 192, 203],
        "plum":  [221, 160, 221],
        "powderblue":  [176, 224, 230],
        "purple":  [128, 0, 128],
        "red":  [255, 0, 0],
        "rosybrown":  [188, 143, 143],
        "royalblue":  [65, 105, 225],
        "saddlebrown":  [139, 69, 19],
        "salmon":  [250, 128, 114],
        "sandybrown":  [244, 164, 96],
        "seagreen":  [46, 139, 87],
        "seashell":  [255, 245, 238],
        "sienna":  [160, 82, 45],
        "silver":  [192, 192, 192],
        "skyblue":  [135, 206, 235],
        "slateblue":  [106, 90, 205],
        "slategray":  [112, 128, 144],
        "slategrey":  [112, 128, 144],
        "snow":  [255, 250, 250],
        "springgreen":  [0, 255, 127],
        "steelblue":  [70, 130, 180],
        "tan":  [210, 180, 140],
        "teal":  [0, 128, 128],
        "thistle":  [216, 191, 216],
        "tomato":  [255, 99, 71],
        "turquoise":  [64, 224, 208],
        "violet":  [238, 130, 238],
        "wheat":  [245, 222, 179],
        "white":  [255, 255, 255],
        "whitesmoke":  [245, 245, 245],
        "yellow":  [255, 255, 0],
        "yellowgreen":  [154, 205, 50],
        "transparent":  [0, 0, 0, 0]
    },
    "filter": {
        "value": [
            "true",
            "false",
            "null",
            "point",
            "linestring",
            "polygon",
            "collection"
        ]
    }
}

module.exports = {
  version: {
    latest: _mapnik_reference_latest,
    '2.1.1': _mapnik_reference_latest
  }
};

},{}],45:[function(require,module,exports){
/**
 * TODO: document this. What does this do?
 */
if(typeof(module) !== "undefined") {
  module.exports.find = function (obj, fun) {
      for (var i = 0, r; i < obj.length; i++) {
          if (r = fun.call(obj, obj[i])) { return r; }
      }
      return null;
  };
}

},{}],46:[function(require,module,exports){
(function (global){
(function(tree) {
var _ = global._ || require('underscore');
tree.Call = function Call(name, args, index) {
    this.name = name;
    this.args = args;
    this.index = index;
};

tree.Call.prototype = {
    is: 'call',
    // When evuating a function call,
    // we either find the function in `tree.functions` [1],
    // in which case we call it, passing the  evaluated arguments,
    // or we simply print it out as it appeared originally [2].
    // The *functions.js* file contains the built-in functions.
    // The reason why we evaluate the arguments, is in the case where
    // we try to pass a variable to a function, like: `saturate(@color)`.
    // The function should receive the value, not the variable.
    'ev': function(env) {
        var args = this.args.map(function(a) { return a.ev(env); });

        for (var i = 0; i < args.length; i++) {
            if (args[i].is === 'undefined') {
                return {
                    is: 'undefined',
                    value: 'undefined'
                };
            }
        }

        if (this.name in tree.functions) {
            if (tree.functions[this.name].length <= args.length) {
                var val = tree.functions[this.name].apply(tree.functions, args);
                if (val === null) {
                    env.error({
                        message: 'incorrect arguments given to ' + this.name + '()',
                        index: this.index,
                        type: 'runtime',
                        filename: this.filename
                    });
                    return { is: 'undefined', value: 'undefined' };
                }
                return val;
            } else {
                env.error({
                    message: 'incorrect number of arguments for ' + this.name +
                        '(). ' + tree.functions[this.name].length + ' expected.',
                    index: this.index,
                    type: 'runtime',
                    filename: this.filename
                });
                return {
                    is: 'undefined',
                    value: 'undefined'
                };
            }
        } else {
            var fn = tree.Reference.mapnikFunctions[this.name];
            if (fn === undefined) {
                var functions = _.pairs(tree.Reference.mapnikFunctions);
                // cheap closest, needs improvement.
                var name = this.name;
                var mean = functions.map(function(f) {
                    return [f[0], tree.Reference.editDistance(name, f[0]), f[1]];
                }).sort(function(a, b) {
                    return a[1] - b[1];
                });
                env.error({
                    message: 'unknown function ' + this.name + '(), did you mean ' +
                        mean[0][0] + '(' + mean[0][2] + ')',
                    index: this.index,
                    type: 'runtime',
                    filename: this.filename
                });
                return {
                    is: 'undefined',
                    value: 'undefined'
                };
            }
            if (fn !== args.length &&
                !(Array.isArray(fn) && _.include(fn, args.length)) &&
                // support variable-arg functions like `colorize-alpha`
                fn !== -1) {
                env.error({
                    message: 'function ' + this.name + '() takes ' +
                        fn + ' arguments and was given ' + args.length,
                    index: this.index,
                    type: 'runtime',
                    filename: this.filename
                });
                return {
                    is: 'undefined',
                    value: 'undefined'
                };
            } else {
                // Save the evaluated versions of arguments
                this.args = args;
                return this;
            }
        }
    },

    toString: function(env, format) {
        if (this.args.length) {
            return this.name + '(' + this.args.join(',') + ')';
        } else {
            return this.name;
        }
    }
};

})(require('../tree'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"underscore":163}],47:[function(require,module,exports){
(function(tree) {
// RGB Colors - #ff0014, #eee
// can be initialized with a 3 or 6 char string or a 3 or 4 element
// numerical array
tree.Color = function Color(rgb, a) {
    // The end goal here, is to parse the arguments
    // into an integer triplet, such as `128, 255, 0`
    //
    // This facilitates operations and conversions.
    if (Array.isArray(rgb)) {
        this.rgb = rgb.slice(0, 3);
    } else if (rgb.length == 6) {
        this.rgb = rgb.match(/.{2}/g).map(function(c) {
            return parseInt(c, 16);
        });
    } else {
        this.rgb = rgb.split('').map(function(c) {
            return parseInt(c + c, 16);
        });
    }

    if (typeof(a) === 'number') {
        this.alpha = a;
    } else if (rgb.length === 4) {
        this.alpha = rgb[3];
    } else {
        this.alpha = 1;
    }
};

tree.Color.prototype = {
    is: 'color',
    'ev': function() { return this; },

    // If we have some transparency, the only way to represent it
    // is via `rgba`. Otherwise, we use the hex representation,
    // which has better compatibility with older browsers.
    // Values are capped between `0` and `255`, rounded and zero-padded.
    toString: function() {
        if (this.alpha < 1.0) {
            return 'rgba(' + this.rgb.map(function(c) {
                return Math.round(c);
            }).concat(this.alpha).join(', ') + ')';
        } else {
            return '#' + this.rgb.map(function(i) {
                i = Math.round(i);
                i = (i > 255 ? 255 : (i < 0 ? 0 : i)).toString(16);
                return i.length === 1 ? '0' + i : i;
            }).join('');
        }
    },

    // Operations have to be done per-channel, if not,
    // channels will spill onto each other. Once we have
    // our result, in the form of an integer triplet,
    // we create a new Color node to hold the result.
    operate: function(env, op, other) {
        var result = [];

        if (! (other instanceof tree.Color)) {
            other = other.toColor();
        }

        for (var c = 0; c < 3; c++) {
            result[c] = tree.operate(op, this.rgb[c], other.rgb[c]);
        }
        return new tree.Color(result);
    },

    toHSL: function() {
        var r = this.rgb[0] / 255,
            g = this.rgb[1] / 255,
            b = this.rgb[2] / 255,
            a = this.alpha;

        var max = Math.max(r, g, b), min = Math.min(r, g, b);
        var h, s, l = (max + min) / 2, d = max - min;

        if (max === min) {
            h = s = 0;
        } else {
            s = l > 0.5 ? d / (2 - max - min) : d / (max + min);

            switch (max) {
                case r: h = (g - b) / d + (g < b ? 6 : 0); break;
                case g: h = (b - r) / d + 2; break;
                case b: h = (r - g) / d + 4; break;
            }
            h /= 6;
        }
        return { h: h * 360, s: s, l: l, a: a };
    }
};

})(require('../tree'));

},{"../tree":45}],48:[function(require,module,exports){
(function(tree) {

tree.Comment = function Comment(value, silent) {
    this.value = value;
    this.silent = !!silent;
};

tree.Comment.prototype = {
    toString: function(env) {
        return '<!--' + this.value + '-->';
    },
    'ev': function() { return this; }
};

})(require('../tree'));

},{"../tree":45}],49:[function(require,module,exports){
(function (global){
(function(tree) {
var assert = require('assert'),
    _ = global._ || require('underscore');

// A definition is the combination of a selector and rules, like
// #foo {
//     polygon-opacity:1.0;
// }
//
// The selector can have filters
tree.Definition = function Definition(selector, rules) {
    this.elements = selector.elements;
    assert.ok(selector.filters instanceof tree.Filterset);
    this.rules = rules;
    this.ruleIndex = {};
    for (var i = 0; i < this.rules.length; i++) {
        if ('zoom' in this.rules[i]) this.rules[i] = this.rules[i].clone();
        this.rules[i].zoom = selector.zoom;
        this.ruleIndex[this.rules[i].updateID()] = true;
    }
    this.filters = selector.filters;
    this.zoom = selector.zoom;
    this.frame_offset = selector.frame_offset;
    this.attachment = selector.attachment || '__default__';
    this.specificity = selector.specificity();
};

tree.Definition.prototype.toString = function() {
    var str = this.filters.toString();
    for (var i = 0; i < this.rules.length; i++) {
        str += '\n    ' + this.rules[i];
    }
    return str;
};

tree.Definition.prototype.clone = function(filters) {
    if (filters) assert.ok(filters instanceof tree.Filterset);
    var clone = Object.create(tree.Definition.prototype);
    clone.rules = this.rules.slice();
    clone.ruleIndex = _.clone(this.ruleIndex);
    clone.filters = filters ? filters : this.filters.clone();
    clone.attachment = this.attachment;
    return clone;
};

tree.Definition.prototype.addRules = function(rules) {
    var added = 0;

    // Add only unique rules.
    for (var i = 0; i < rules.length; i++) {
        if (!this.ruleIndex[rules[i].id]) {
            this.rules.push(rules[i]);
            this.ruleIndex[rules[i].id] = true;
            added++;
        }
    }

    return added;
};

// Determine whether this selector matches a given id
// and array of classes, by determining whether
// all elements it contains match.
tree.Definition.prototype.appliesTo = function(id, classes) {
    for (var i = 0, l = this.elements.length; i < l; i++) {
        var elem = this.elements[i];
        if (!(elem.wildcard ||
            (elem.type === 'class' && classes[elem.clean]) ||
            (elem.type === 'id' && id === elem.clean))) return false;
    }
    return true;
};

function symbolizerName(symbolizer) {
    function capitalize(str) { return str[1].toUpperCase(); }
    return symbolizer.charAt(0).toUpperCase() +
           symbolizer.slice(1).replace(/\-./, capitalize) + 'Symbolizer';
}

// Get a simple list of the symbolizers, in order
function symbolizerList(sym_order) {
    return sym_order.sort(function(a, b) { return a[1] - b[1]; })
        .map(function(v) { return v[0]; });
}

tree.Definition.prototype.symbolizersToXML = function(env, symbolizers, zoom) {
    var xml = zoom.toXML(env).join('') + this.filters.toXML(env);

    // Sort symbolizers by the index of their first property definition
    var sym_order = [], indexes = [];
    for (var key in symbolizers) {
        indexes = [];
        for (var prop in symbolizers[key]) {
            indexes.push(symbolizers[key][prop].index);
        }
        var min_idx = Math.min.apply(Math, indexes);
        sym_order.push([key, min_idx]);
    }

    sym_order = symbolizerList(sym_order);
    var sym_count = 0;

    for (var i = 0; i < sym_order.length; i++) {
        var attributes = symbolizers[sym_order[i]];
        var symbolizer = sym_order[i].split('/').pop();

        // Skip the magical * symbolizer which is used for universal properties
        // which are bubbled up to Style elements intead of Symbolizer elements.
        if (symbolizer === '*') continue;
        sym_count++;

        var fail = tree.Reference.requiredProperties(symbolizer, attributes);
        if (fail) {
            var rule = attributes[Object.keys(attributes).shift()];
            env.error({
                message: fail,
                index: rule.index,
                filename: rule.filename
            });
        }

        var name = symbolizerName(symbolizer);

        var selfclosing = true, tagcontent;
        xml += '    <' + name + ' ';
        for (var j in attributes) {
            if (symbolizer === 'map') env.error({
                message: 'Map properties are not permitted in other rules',
                index: attributes[j].index,
                filename: attributes[j].filename
            });
            var x = tree.Reference.selector(attributes[j].name);
            if (x && x.serialization && x.serialization === 'content') {
                selfclosing = false;
                tagcontent = attributes[j].ev(env).toXML(env, true);
            } else if (x && x.serialization && x.serialization === 'tag') {
                selfclosing = false;
                tagcontent = attributes[j].ev(env).toXML(env, true);
            } else {
                xml += attributes[j].ev(env).toXML(env) + ' ';
            }
        }
        if (selfclosing) {
            xml += '/>\n';
        } else if (typeof tagcontent !== "undefined") {
            if (tagcontent.indexOf('<') != -1) {
                xml += '>' + tagcontent + '</' + name + '>\n';
            } else {
                xml += '><![CDATA[' + tagcontent + ']]></' + name + '>\n';
            }
        }
    }
    if (!sym_count || !xml) return '';
    return '  <Rule>\n' + xml + '  </Rule>\n';
};

// Take a zoom range of zooms and 'i', the index of a rule in this.rules,
// and finds all applicable symbolizers
tree.Definition.prototype.collectSymbolizers = function(zooms, i) {
    var symbolizers = {}, child;

    for (var j = i; j < this.rules.length; j++) {
        child = this.rules[j];
        var key = child.instance + '/' + child.symbolizer;
        if (zooms.current & child.zoom &&
           (!(key in symbolizers) ||
           (!(child.name in symbolizers[key])))) {
            zooms.current &= child.zoom;
            if (!(key in symbolizers)) {
                symbolizers[key] = {};
            }
            symbolizers[key][child.name] = child;
        }
    }

    if (Object.keys(symbolizers).length) {
        zooms.rule &= (zooms.available &= ~zooms.current);
        return symbolizers;
    }
};

// The tree.Zoom.toString function ignores the holes in zoom ranges and outputs
// scaledenominators that cover the whole range from the first to last bit set.
// This algorithm can produces zoom ranges that may have holes. However,
// when using the filter-mode="first", more specific zoom filters will always
// end up before broader ranges. The filter-mode will pick those first before
// resorting to the zoom range with the hole and stop processing further rules.
tree.Definition.prototype.toXML = function(env, existing) {
    var filter = this.filters.toString();
    if (!(filter in existing)) existing[filter] = tree.Zoom.all;

    var available = tree.Zoom.all, xml = '', zoom, symbolizers,
        zooms = { available: tree.Zoom.all };
    for (var i = 0; i < this.rules.length && available; i++) {
        zooms.rule = this.rules[i].zoom;
        if (!(existing[filter] & zooms.rule)) continue;

        while (zooms.current = zooms.rule & available) {
            if (symbolizers = this.collectSymbolizers(zooms, i)) {
                if (!(existing[filter] & zooms.current)) continue;
                xml += this.symbolizersToXML(env, symbolizers,
                    (new tree.Zoom()).setZoom(existing[filter] & zooms.current));
                existing[filter] &= ~zooms.current;
            }
        }
    }

    return xml;
};

tree.Definition.prototype.toJS = function(env) {
  var shaderAttrs = {};
  var frame_offset = this.frame_offset;
  var zoomFilter = "(" + this.zoom + " & (1 << ctx.zoom))";
  var filters = [zoomFilter];
  var originalFilters = this.filters.toJS(env);
  // Ignore default zoom for filtering (https://github.com/CartoDB/carto/issues/40)
  var zoomFiltered = this.zoom !== tree.Zoom.all;
  
  if (originalFilters) {
      filters.push(originalFilters);
  }

  if (frame_offset) {
      filters.push('ctx["frame-offset"] === ' + frame_offset);
  }

  _.each(this.rules, function (rule) {
      var exportedRule = {};

      if (!rule instanceof tree.Rule) {
          throw new Error("Ruleset not supported");
      }

      exportedRule.index = rule.index;
      exportedRule.symbolizer = rule.symbolizer;
      exportedRule.js = "if(" + filters.join(" && ") + "){" + rule.value.toJS(env) + "}";
      exportedRule.constant = rule.value.ev(env).is !== 'field';
      exportedRule.filtered = zoomFiltered || (originalFilters !== '');
      shaderAttrs[rule.name] = shaderAttrs[rule.name] || [];
      shaderAttrs[rule.name].push(exportedRule);
  });

  return shaderAttrs;
};


})(require('../tree'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"assert":35,"underscore":163}],50:[function(require,module,exports){
(function (global){
(function(tree) {
var _ = global._ || require('underscore');
//
// A number with a unit
//
tree.Dimension = function Dimension(value, unit, index) {
    this.value = parseFloat(value);
    this.unit = unit || null;
    this.index = index;
};

tree.Dimension.prototype = {
    is: 'float',
    physical_units: ['m', 'cm', 'in', 'mm', 'pt', 'pc'],
    screen_units: ['px', '%'],
    all_units: ['m', 'cm', 'in', 'mm', 'pt', 'pc', 'px', '%'],
    densities: {
        m: 0.0254,
        mm: 25.4,
        cm: 2.54,
        pt: 72,
        pc: 6
    },
    ev: function (env) {
        if (this.unit && !_.contains(this.all_units, this.unit)) {
            env.error({
                message: "Invalid unit: '" + this.unit + "'",
                index: this.index
            });
            return { is: 'undefined', value: 'undefined' };
        }

        // normalize units which are not px or %
        if (this.unit && _.contains(this.physical_units, this.unit)) {
            if (!env.ppi) {
                env.error({
                    message: "ppi is not set, so metric units can't be used",
                    index: this.index
                });
                return { is: 'undefined', value: 'undefined' };
            }
            // convert all units to inch
            // convert inch to px using ppi
            this.value = (this.value / this.densities[this.unit]) * env.ppi;
            this.unit = 'px';
        }

        return this;
    },
    round: function() {
        this.value = Math.round(this.value);
        return this;
    },
    toColor: function() {
        return new tree.Color([this.value, this.value, this.value]);
    },
    round: function() {
        this.value = Math.round(this.value);
        return this;
    },
    toString: function() {
        return this.value.toString();
    },
    operate: function(env, op, other) {
        if (this.unit === '%' && other.unit !== '%') {
            env.error({
                message: 'If two operands differ, the first must not be %',
                index: this.index
            });
            return {
                is: 'undefined',
                value: 'undefined'
            };
        }

        if (this.unit !== '%' && other.unit === '%') {
            if (op === '*' || op === '/' || op === '%') {
                env.error({
                    message: 'Percent values can only be added or subtracted from other values',
                    index: this.index
                });
                return {
                    is: 'undefined',
                    value: 'undefined'
                };
            }

            return new tree.Dimension(tree.operate(op,
                    this.value, this.value * other.value * 0.01),
                this.unit);
        }

        //here the operands are either the same (% or undefined or px), or one is undefined and the other is px
        return new tree.Dimension(tree.operate(op, this.value, other.value),
            this.unit || other.unit);
    }
};

})(require('../tree'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"underscore":163}],51:[function(require,module,exports){
(function(tree) {

// An element is an id or class selector
tree.Element = function Element(value) {
    this.value = value.trim();
    if (this.value[0] === '#') {
        this.type = 'id';
        this.clean = this.value.replace(/^#/, '');
    }
    if (this.value[0] === '.') {
        this.type = 'class';
        this.clean = this.value.replace(/^\./, '');
    }
    if (this.value.indexOf('*') !== -1) {
        this.type = 'wildcard';
    }
};

// Determine the 'specificity matrix' of this
// specific selector
tree.Element.prototype.specificity = function() {
    return [
        (this.type === 'id') ? 1 : 0, // a
        (this.type === 'class') ? 1 : 0  // b
    ];
};

tree.Element.prototype.toString = function() { return this.value; };

})(require('../tree'));

},{"../tree":45}],52:[function(require,module,exports){
(function(tree) {

tree.Expression = function Expression(value) {
    this.value = value;
};

tree.Expression.prototype = {
    is: 'expression',
    ev: function(env) {
        if (this.value.length > 1) {
            return new tree.Expression(this.value.map(function(e) {
                return e.ev(env);
            }));
        } else {
            return this.value[0].ev(env);
        }
    },

    toString: function(env) {
        return this.value.map(function(e) {
            return e.toString(env);
        }).join(' ');
    }
};

})(require('../tree'));

},{"../tree":45}],53:[function(require,module,exports){
(function(tree) {

tree.Field = function Field(content) {
    this.value = content || '';
};

tree.Field.prototype = {
    is: 'field',
    toString: function() {
        return '[' + this.value + ']';
    },
    'ev': function() {
        return this;
    }
};

})(require('../tree'));

},{"../tree":45}],54:[function(require,module,exports){
(function(tree) {

tree.Filter = function Filter(key, op, val, index, filename) {
    this.key = key;
    this.op = op;
    this.val = val;
    this.index = index;
    this.filename = filename;

    this.id = this.key + this.op + this.val;
};

// xmlsafe, numeric, suffix
var ops = {
    '<': [' &lt; ', 'numeric'],
    '>': [' &gt; ', 'numeric'],
    '=': [' = ', 'both'],
    '!=': [' != ', 'both'],
    '<=': [' &lt;= ', 'numeric'],
    '>=': [' &gt;= ', 'numeric'],
    '=~': ['.match(', 'string', ')']
};

tree.Filter.prototype.ev = function(env) {
    this.key = this.key.ev(env);
    this.val = this.val.ev(env);
    return this;
};

tree.Filter.prototype.toXML = function(env) {
    if (tree.Reference.data.filter) {
        if (this.key.is === 'keyword' && -1 === tree.Reference.data.filter.value.indexOf(this.key.toString())) {
            env.error({
                message: this.key.toString() + ' is not a valid keyword in a filter expression',
                index: this.index,
                filename: this.filename
            });
        }
        if (this.val.is === 'keyword' && -1 === tree.Reference.data.filter.value.indexOf(this.val.toString())) {
            env.error({
                message: this.val.toString() + ' is not a valid keyword in a filter expression',
                index: this.index,
                filename: this.filename
            });
        }
    }
    var key = this.key.toString(false);
    var val = this.val.toString(this.val.is == 'string');

    if (
        (ops[this.op][1] == 'numeric' && isNaN(val) && this.val.is !== 'field') ||
        (ops[this.op][1] == 'string' && (val)[0] != "'")
    ) {
        env.error({
            message: 'Cannot use operator "' + this.op + '" with value ' + this.val,
            index: this.index,
            filename: this.filename
        });
    }

    return key + ops[this.op][0] + val + (ops[this.op][2] || '');
};

tree.Filter.prototype.toString = function() {
    return '[' + this.id + ']';
};

})(require('../tree'));

},{"../tree":45}],55:[function(require,module,exports){
(function (global){
var tree = require('../tree');
var _ = global._ || require('underscore');

tree.Filterset = function Filterset() {
    this.filters = {};
};

tree.Filterset.prototype.toXML = function(env) {
    var filters = [];
    for (var id in this.filters) {
        filters.push('(' + this.filters[id].toXML(env).trim() + ')');
    }
    if (filters.length) {
        return '    <Filter>' + filters.join(' and ') + '</Filter>\n';
    } else {
        return '';
    }
};

tree.Filterset.prototype.toString = function() {
    var arr = [];
    for (var id in this.filters) arr.push(this.filters[id].id);
    return arr.sort().join('\t');
};

tree.Filterset.prototype.ev = function(env) {
    for (var i in this.filters) {
        this.filters[i].ev(env);
    }
    return this;
};

tree.Filterset.prototype.clone = function() {
    var clone = new tree.Filterset();
    for (var id in this.filters) {
        clone.filters[id] = this.filters[id];
    }
    return clone;
};

// Note: other has to be a tree.Filterset.
tree.Filterset.prototype.cloneWith = function(other) {
    var additions = [];
    for (var id in other.filters) {
        var status = this.addable(other.filters[id]);
        // status is true, false or null. if it's null we don't fail this
        // clone nor do we add the filter.
        if (status === false) {
            return false;
        }
        if (status === true) {
            // Adding the filter will override another value.
            additions.push(other.filters[id]);
        }
    }

    // Adding the other filters doesn't make this filterset invalid, but it
    // doesn't add anything to it either.
    if (!additions.length) {
        return null;
    }

    // We can successfully add all filters. Now clone the filterset and add the
    // new rules.
    var clone = new tree.Filterset();

    // We can add the rules that are already present without going through the
    // add function as a Filterset is always in it's simplest canonical form.
    for (id in this.filters) {
        clone.filters[id] = this.filters[id];
    }

    // Only add new filters that actually change the filter.
    while (id = additions.shift()) {
        clone.add(id);
    }

    return clone;
};

tree.Filterset.prototype.toJS = function(env) {
  var opMap = {
    '=': '==='
  };
  return _.map(this.filters, function(filter) {
    var op = filter.op;
    if(op in opMap) {
      op = opMap[op];
    }
    var val = filter.val;
    if(filter._val !== undefined) {
      val = filter._val.toString(true);
    }
    var attrs = "data";
    if (op === '=~') {
      return "(" + attrs + "['" + filter.key.value  + "'] + '').match(" + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val) + ")";
    }
    return attrs + "['" + filter.key.value  + "'] " + op + " " + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val);
  }).join(' && ');
};

// Returns true when the new filter can be added, false otherwise.
// It can also return null, and on the other side we test for === true or
// false
tree.Filterset.prototype.addable = function(filter) {
    var key = filter.key.toString(),
        value = filter.val.toString();

    if (value.match(/^[0-9]+(\.[0-9]*)?$/)) value = parseFloat(value);

    switch (filter.op) {
        case '=':
            // if there is already foo= and we're adding foo=
            if (this.filters[key + '='] !== undefined) {
                if (this.filters[key + '='].val.toString() != value) {
                    return false;
                } else {
                    return null;
                }
            }
            if (this.filters[key + '!=' + value] !== undefined) return false;
            if (this.filters[key + '>'] !== undefined && this.filters[key + '>'].val >= value) return false;
            if (this.filters[key + '<'] !== undefined && this.filters[key + '<'].val <= value) return false;
            if (this.filters[key + '>='] !== undefined  && this.filters[key + '>='].val > value) return false;
            if (this.filters[key + '<='] !== undefined  && this.filters[key + '<='].val < value) return false;
            return true;

        case '=~':
            return true;

        case '!=':
            if (this.filters[key + '='] !== undefined) return (this.filters[key + '='].val == value) ? false : null;
            if (this.filters[key + '!=' + value] !== undefined) return null;
            if (this.filters[key + '>'] !== undefined && this.filters[key + '>'].val >= value) return null;
            if (this.filters[key + '<'] !== undefined && this.filters[key + '<'].val <= value) return null;
            if (this.filters[key + '>='] !== undefined && this.filters[key + '>='].val > value) return null;
            if (this.filters[key + '<='] !== undefined && this.filters[key + '<='].val < value) return null;
            return true;

        case '>':
            if (key + '=' in this.filters) {
                if (this.filters[key + '='].val <= value) {
                    return false;
                } else {
                    return null;
                }
            }
            if (this.filters[key + '<'] !== undefined && this.filters[key + '<'].val <= value) return false;
            if (this.filters[key + '<='] !== undefined  && this.filters[key + '<='].val <= value) return false;
            if (this.filters[key + '>'] !== undefined && this.filters[key + '>'].val >= value) return null;
            if (this.filters[key + '>='] !== undefined  && this.filters[key + '>='].val > value) return null;
            return true;

        case '>=':
            if (this.filters[key + '=' ] !== undefined) return (this.filters[key + '='].val < value) ? false : null;
            if (this.filters[key + '<' ] !== undefined && this.filters[key + '<'].val <= value) return false;
            if (this.filters[key + '<='] !== undefined && this.filters[key + '<='].val < value) return false;
            if (this.filters[key + '>' ] !== undefined && this.filters[key + '>'].val >= value) return null;
            if (this.filters[key + '>='] !== undefined && this.filters[key + '>='].val >= value) return null;
            return true;

        case '<':
            if (this.filters[key + '=' ] !== undefined) return (this.filters[key + '='].val >= value) ? false : null;
            if (this.filters[key + '>' ] !== undefined && this.filters[key + '>'].val >= value) return false;
            if (this.filters[key + '>='] !== undefined && this.filters[key + '>='].val >= value) return false;
            if (this.filters[key + '<' ] !== undefined && this.filters[key + '<'].val <= value) return null;
            if (this.filters[key + '<='] !== undefined && this.filters[key + '<='].val < value) return null;
            return true;

        case '<=':
            if (this.filters[key + '=' ] !== undefined) return (this.filters[key + '='].val > value) ? false : null;
            if (this.filters[key + '>' ] !== undefined && this.filters[key + '>'].val >= value) return false;
            if (this.filters[key + '>='] !== undefined && this.filters[key + '>='].val > value) return false;
            if (this.filters[key + '<' ] !== undefined && this.filters[key + '<'].val <= value) return null;
            if (this.filters[key + '<='] !== undefined && this.filters[key + '<='].val <= value) return null;
            return true;
    }
};

// Does the new filter constitute a conflict?
tree.Filterset.prototype.conflict = function(filter) {
    var key = filter.key.toString(),
        value = filter.val.toString();

    if (!isNaN(parseFloat(value))) value = parseFloat(value);

    // if (a=b) && (a=c)
    // if (a=b) && (a!=b)
    // or (a!=b) && (a=b)
    if ((filter.op === '=' && this.filters[key + '='] !== undefined &&
        value != this.filters[key + '='].val.toString()) ||
        (filter.op === '!=' && this.filters[key + '='] !== undefined &&
        value == this.filters[key + '='].val.toString()) ||
        (filter.op === '=' && this.filters[key + '!='] !== undefined &&
        value == this.filters[key + '!='].val.toString())) {
        return filter.toString() + ' added to ' + this.toString() + ' produces an invalid filter';
    }

    return false;
};

// Only call this function for filters that have been cleared by .addable().
tree.Filterset.prototype.add = function(filter, env) {
    var key = filter.key.toString(),
        id,
        op = filter.op,
        conflict = this.conflict(filter),
        numval;

    if (conflict) return conflict;

    if (op === '=') {
        for (var i in this.filters) {
            if (this.filters[i].key == key) delete this.filters[i];
        }
        this.filters[key + '='] = filter;
    } else if (op === '!=') {
        this.filters[key + '!=' + filter.val] = filter;
    } else if (op === '=~') {
        this.filters[key + '=~' + filter.val] = filter;
    } else if (op === '>') {
        // If there are other filters that are also >
        // but are less than this one, they don't matter, so
        // remove them.
        for (var j in this.filters) {
            if (this.filters[j].key == key && this.filters[j].val <= filter.val) {
                delete this.filters[j];
            }
        }
        this.filters[key + '>'] = filter;
    } else if (op === '>=') {
        for (var k in this.filters) {
            numval = (+this.filters[k].val.toString());
            if (this.filters[k].key == key && numval < filter.val) {
                delete this.filters[k];
            }
        }
        if (this.filters[key + '!=' + filter.val] !== undefined) {
            delete this.filters[key + '!=' + filter.val];
            filter.op = '>';
            this.filters[key + '>'] = filter;
        }
        else {
            this.filters[key + '>='] = filter;
        }
    } else if (op === '<') {
        for (var l in this.filters) {
            numval = (+this.filters[l].val.toString());
            if (this.filters[l].key == key && numval >= filter.val) {
                delete this.filters[l];
            }
        }
        this.filters[key + '<'] = filter;
    } else if (op === '<=') {
        for (var m in this.filters) {
            numval = (+this.filters[m].val.toString());
            if (this.filters[m].key == key && numval > filter.val) {
                delete this.filters[m];
            }
        }
        if (this.filters[key + '!=' + filter.val] !== undefined) {
            delete this.filters[key + '!=' + filter.val];
            filter.op = '<';
            this.filters[key + '<'] = filter;
        }
        else {
            this.filters[key + '<='] = filter;
        }
    }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"underscore":163}],56:[function(require,module,exports){
(function(tree) {

tree._getFontSet = function(env, fonts) {
    var fontKey = fonts.join('');
    if (env._fontMap && env._fontMap[fontKey]) {
        return env._fontMap[fontKey];
    }

    var new_fontset = new tree.FontSet(env, fonts);
    env.effects.push(new_fontset);
    if (!env._fontMap) env._fontMap = {};
    env._fontMap[fontKey] = new_fontset;
    return new_fontset;
};

tree.FontSet = function FontSet(env, fonts) {
    this.fonts = fonts;
    this.name = 'fontset-' + env.effects.length;
};

tree.FontSet.prototype.toXML = function(env) {
    return '<FontSet name="' +
        this.name +
        '">\n' +
        this.fonts.map(function(f) {
            return '  <Font face-name="' + f +'"/>';
        }).join('\n') +
        '\n</FontSet>';
};

})(require('../tree'));

},{"../tree":45}],57:[function(require,module,exports){
var tree = require('../tree');

// Storage for Frame offset value
// and stores them as bit-sequences so that they can be combined,
// inverted, and compared quickly.
tree.FrameOffset = function(op, value, index) {
    value = parseInt(value, 10);
    if (value > tree.FrameOffset.max || value <= 0) {
        throw {
            message: 'Only frame-offset levels between 1 and ' +
                tree.FrameOffset.max + ' supported.',
            index: index
        };
    }

    if (op !== '=') {
        throw {
            message: 'only = operator is supported for frame-offset',
            index: index
        };
    }
    return value;
};

tree.FrameOffset.max = 32;
tree.FrameOffset.none = 0;


},{"../tree":45}],58:[function(require,module,exports){
(function(tree) {

tree.ImageFilter = function ImageFilter(filter, args) {
    this.filter = filter;
    this.args = args || null;
};

tree.ImageFilter.prototype = {
    is: 'imagefilter',
    ev: function() { return this; },

    toString: function() {
        if (this.args) {
            return this.filter + '(' + this.args.join(',') + ')';
        } else {
            return this.filter;
        }
    }
};


})(require('../tree'));

},{"../tree":45}],59:[function(require,module,exports){
(function (tree) {
tree.Invalid = function Invalid(chunk, index, message) {
    this.chunk = chunk;
    this.index = index;
    this.type = 'syntax';
    this.message = message || "Invalid code: " + this.chunk;
};

tree.Invalid.prototype.is = 'invalid';

tree.Invalid.prototype.ev = function(env) {
    env.error({
        chunk: this.chunk,
        index: this.index,
        type: 'syntax',
        message: this.message || "Invalid code: " + this.chunk
    });
    return {
        is: 'undefined'
    };
};
})(require('../tree'));

},{"../tree":45}],60:[function(require,module,exports){
(function(tree) {

tree.Keyword = function Keyword(value) {
    this.value = value;
    var special = {
        'transparent': 'color',
        'true': 'boolean',
        'false': 'boolean'
    };
    this.is = special[value] ? special[value] : 'keyword';
};
tree.Keyword.prototype = {
    ev: function() { return this; },
    toString: function() { return this.value; }
};

})(require('../tree'));

},{"../tree":45}],61:[function(require,module,exports){
(function(tree) {

tree.LayerXML = function(obj, styles) {
    var dsoptions = [];
    for (var i in obj.Datasource) {
        dsoptions.push('<Parameter name="' + i + '"><![CDATA[' +
            obj.Datasource[i] + ']]></Parameter>');
    }

    var prop_string = '';
    for (var prop in obj.properties) {
        if (prop === 'minzoom') {
            prop_string += '  maxzoom="' + tree.Zoom.ranges[obj.properties[prop]] + '"\n';
        } else if (prop === 'maxzoom') {
            prop_string += '  minzoom="' + tree.Zoom.ranges[obj.properties[prop]+1] + '"\n';
        } else {
            prop_string += '  ' + prop + '="' + obj.properties[prop] + '"\n';
        }
    }

    return '<Layer' +
        ' name="' + obj.name + '"\n' +
        prop_string +
        ((typeof obj.status === 'undefined') ? '' : '  status="' + obj.status + '"\n') +
        ((typeof obj.srs === 'undefined') ? '' : '  srs="' + obj.srs + '"') + '>\n    ' +
        styles.reverse().map(function(s) {
            return '<StyleName>' + s + '</StyleName>';
        }).join('\n    ') +
        (dsoptions.length ?
        '\n    <Datasource>\n       ' +
        dsoptions.join('\n       ') +
        '\n    </Datasource>\n'
        : '') +
        '  </Layer>\n';
};

})(require('../tree'));

},{"../tree":45}],62:[function(require,module,exports){
// A literal is a literal string for Mapnik - the
// result of the combination of a `tree.Field` with any
// other type.
(function(tree) {

tree.Literal = function Field(content) {
    this.value = content || '';
    this.is = 'field';
};

tree.Literal.prototype = {
    toString: function() {
        return this.value;
    },
    'ev': function() {
        return this;
    }
};

})(require('../tree'));

},{"../tree":45}],63:[function(require,module,exports){
// An operation is an expression with an op in between two operands,
// like 2 + 1.
(function(tree) {

tree.Operation = function Operation(op, operands, index) {
    this.op = op.trim();
    this.operands = operands;
    this.index = index;
};

tree.Operation.prototype.is = 'operation';

tree.Operation.prototype.ev = function(env) {
    var a = this.operands[0].ev(env),
        b = this.operands[1].ev(env),
        temp;

    if (a.is === 'undefined' || b.is === 'undefined') {
        return {
            is: 'undefined',
            value: 'undefined'
        };
    }

    if (a instanceof tree.Dimension && b instanceof tree.Color) {
        if (this.op === '*' || this.op === '+') {
            temp = b, b = a, a = temp;
        } else {
            env.error({
                name: "OperationError",
                message: "Can't substract or divide a color from a number",
                index: this.index
            });
        }
    }

    // Only concatenate plain strings, because this is easily
    // pre-processed
    if (a instanceof tree.Quoted && b instanceof tree.Quoted && this.op !== '+') {
        env.error({
           message: "Can't subtract, divide, or multiply strings.",
           index: this.index,
           type: 'runtime',
           filename: this.filename
        });
        return {
            is: 'undefined',
            value: 'undefined'
        };
    }

    // Fields, literals, dimensions, and quoted strings can be combined.
    if (a instanceof tree.Field || b instanceof tree.Field ||
        a instanceof tree.Literal || b instanceof tree.Literal) {
        if (a.is === 'color' || b.is === 'color') {
            env.error({
               message: "Can't subtract, divide, or multiply colors in expressions.",
               index: this.index,
               type: 'runtime',
               filename: this.filename
            });
            return {
                is: 'undefined',
                value: 'undefined'
            };
        } else {
            return new tree.Literal(a.ev(env).toString(true) + this.op + b.ev(env).toString(true));
        }
    }

    if (a.operate === undefined) {
        env.error({
           message: 'Cannot do math with type ' + a.is + '.',
           index: this.index,
           type: 'runtime',
           filename: this.filename
        });
        return {
            is: 'undefined',
            value: 'undefined'
        };
    }

    return a.operate(env, this.op, b);
};

tree.operate = function(op, a, b) {
    switch (op) {
        case '+': return a + b;
        case '-': return a - b;
        case '*': return a * b;
        case '%': return a % b;
        case '/': return a / b;
    }
};

})(require('../tree'));

},{"../tree":45}],64:[function(require,module,exports){
(function(tree) {

tree.Quoted = function Quoted(content) {
    this.value = content || '';
};

tree.Quoted.prototype = {
    is: 'string',

    toString: function(quotes) {
        var escapedValue = this.value
            .replace(/&/g, '&amp;')
        var xmlvalue = escapedValue
            .replace(/\'/g, '\\\'')
            .replace(/\"/g, '&quot;')
            .replace(/</g, '&lt;')
            .replace(/\>/g, '&gt;');
        return (quotes === true) ? "'" + xmlvalue + "'" : escapedValue;
    },

    'ev': function() {
        return this;
    },

    operate: function(env, op, other) {
        return new tree.Quoted(tree.operate(op, this.toString(), other.toString(this.contains_field)));
    }
};

})(require('../tree'));

},{"../tree":45}],65:[function(require,module,exports){
(function (global){
// Carto pulls in a reference from the `mapnik-reference`
// module. This file builds indexes from that file for its various
// options, and provides validation methods for property: value
// combinations.
(function(tree) {

var _ = global._ || require('underscore'),
    ref = {};

ref.setData = function(data) {
    ref.data = data;
    ref.selector_cache = generateSelectorCache(data);
    ref.mapnikFunctions = generateMapnikFunctions(data);

    ref.mapnikFunctions.matrix = [6];
    ref.mapnikFunctions.translate = [1, 2];
    ref.mapnikFunctions.scale = [1, 2];
    ref.mapnikFunctions.rotate = [1, 3];
    ref.mapnikFunctions.skewX = [1];
    ref.mapnikFunctions.skewY = [1];

    ref.required_cache = generateRequiredProperties(data);
};

ref.setVersion = function(version) {
    var mapnik_reference = require('mapnik-reference');
    if (mapnik_reference.version.hasOwnProperty(version)) {
        ref.setData(mapnik_reference.version[version]);
        return true;
    } else {
        return false;
    }
};

ref.selectorData = function(selector, i) {
    if (ref.selector_cache[selector]) return ref.selector_cache[selector][i];
};

ref.validSelector = function(selector) { return !!ref.selector_cache[selector]; };
ref.selectorName = function(selector) { return ref.selectorData(selector, 2); };
ref.selector = function(selector) { return ref.selectorData(selector, 0); };
ref.symbolizer = function(selector) { return ref.selectorData(selector, 1); };

function generateSelectorCache(data) {
    var index = {};
    for (var i in data.symbolizers) {
        for (var j in data.symbolizers[i]) {
            if (data.symbolizers[i][j].hasOwnProperty('css')) {
                index[data.symbolizers[i][j].css] = [data.symbolizers[i][j], i, j];
            }
        }
    }
    return index;
}

function generateMapnikFunctions(data) {
    var functions = {};
    for (var i in data.symbolizers) {
        for (var j in data.symbolizers[i]) {
            if (data.symbolizers[i][j].type === 'functions') {
                for (var k = 0; k < data.symbolizers[i][j].functions.length; k++) {
                    var fn = data.symbolizers[i][j].functions[k];
                    functions[fn[0]] = fn[1];
                }
            }
        }
    }
    return functions;
}

function generateRequiredProperties(data) {
    var cache = {};
    for (var symbolizer_name in data.symbolizers) {
        cache[symbolizer_name] = [];
        for (var j in data.symbolizers[symbolizer_name]) {
            if (data.symbolizers[symbolizer_name][j].required) {
                cache[symbolizer_name].push(data.symbolizers[symbolizer_name][j].css);
            }
        }
    }
    return cache;
}

ref.requiredProperties = function(symbolizer_name, rules) {
    var req = ref.required_cache[symbolizer_name];
    for (var i in req) {
        if (!(req[i] in rules)) {
            return 'Property ' + req[i] + ' required for defining ' +
                symbolizer_name + ' styles.';
        }
    }
};

// TODO: finish implementation - this is dead code
ref._validateValue = {
    'font': function(env, value) {
        if (env.validation_data && env.validation_data.fonts) {
            return env.validation_data.fonts.indexOf(value) != -1;
        } else {
            return true;
        }
    }
};

ref.isFont = function(selector) {
    return ref.selector(selector).validate == 'font';
};

// https://gist.github.com/982927
ref.editDistance = function(a, b){
    if (a.length === 0) return b.length;
    if (b.length === 0) return a.length;
    var matrix = [];
    for (var i = 0; i <= b.length; i++) { matrix[i] = [i]; }
    for (var j = 0; j <= a.length; j++) { matrix[0][j] = j; }
    for (i = 1; i <= b.length; i++) {
        for (j = 1; j <= a.length; j++) {
            if (b.charAt(i-1) == a.charAt(j-1)) {
                matrix[i][j] = matrix[i-1][j-1];
            } else {
                matrix[i][j] = Math.min(matrix[i-1][j-1] + 1, // substitution
                    Math.min(matrix[i][j-1] + 1, // insertion
                    matrix[i-1][j] + 1)); // deletion
            }
        }
    }
    return matrix[b.length][a.length];
};

function validateFunctions(value, selector) {
    if (value.value[0].is === 'string') return true;
    for (var i in value.value) {
        for (var j in value.value[i].value) {
            if (value.value[i].value[j].is !== 'call') return false;
            var f = _.find(ref
                .selector(selector).functions, function(x) {
                    return x[0] == value.value[i].value[j].name;
                });
            if (!(f && f[1] == -1)) {
                // This filter is unknown or given an incorrect number of arguments
                if (!f || f[1] !== value.value[i].value[j].args.length) return false;
            }
        }
    }
    return true;
}

function validateKeyword(value, selector) {
    if (typeof ref.selector(selector).type === 'object') {
        return ref.selector(selector).type
            .indexOf(value.value[0].value) !== -1;
    } else {
        // allow unquoted keywords as strings
        return ref.selector(selector).type === 'string';
    }
}

ref.validValue = function(env, selector, value) {
    var i, j;
    // TODO: handle in reusable way
    if (!ref.selector(selector)) {
        return false;
    } else if (value.value[0].is == 'keyword') {
        return validateKeyword(value, selector);
    } else if (value.value[0].is == 'undefined') {
        // caught earlier in the chain - ignore here so that
        // error is not overridden
        return true;
    } else if (ref.selector(selector).type == 'numbers') {
        for (i in value.value) {
            if (value.value[i].is !== 'float') {
                return false;
            }
        }
        return true;
    } else if (ref.selector(selector).type == 'tags') {
        if (!value.value) return false;
        if (!value.value[0].value) {
            return value.value[0].is === 'tag';
        }
        for (i = 0; i < value.value[0].value.length; i++) {
            if (value.value[0].value[i].is !== 'tag') return false;
        }
        return true;
    } else if (ref.selector(selector).type == 'functions') {
        // For backwards compatibility, you can specify a string for `functions`-compatible
        // values, though they will not be validated.
        return validateFunctions(value, selector);
    } else if (ref.selector(selector).type === 'unsigned') {
        if (value.value[0].is === 'float') {
            value.value[0].round();
            return true;
        } else {
            return false;
        }
    } else if ((ref.selector(selector).expression)) {
        return true;
    } else {
        if (ref.selector(selector).validate) {
            var valid = false;
            for (i = 0; i < value.value.length; i++) {
                if (ref.selector(selector).type == value.value[i].is &&
                    ref
                        ._validateValue
                            [ref.selector(selector).validate]
                            (env, value.value[i].value)) {
                    return true;
                }
            }
            return valid;
        } else {
            return ref.selector(selector).type == value.value[0].is;
        }
    }
};

tree.Reference = ref;

})(require('../tree'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"mapnik-reference":86,"underscore":163}],66:[function(require,module,exports){
(function(tree) {
// a rule is a single property and value combination, or variable
// name and value combination, like
// polygon-opacity: 1.0; or @opacity: 1.0;
tree.Rule = function Rule(name, value, index, filename) {
    var parts = name.split('/');
    this.name = parts.pop();
    this.instance = parts.length ? parts[0] : '__default__';
    this.value = (value instanceof tree.Value) ?
        value : new tree.Value([value]);
    this.index = index;
    this.symbolizer = tree.Reference.symbolizer(this.name);
    this.filename = filename;
    this.variable = (name.charAt(0) === '@');
};

tree.Rule.prototype.is = 'rule';

tree.Rule.prototype.clone = function() {
    var clone = Object.create(tree.Rule.prototype);
    clone.name = this.name;
    clone.value = this.value;
    clone.index = this.index;
    clone.instance = this.instance;
    clone.symbolizer = this.symbolizer;
    clone.filename = this.filename;
    clone.variable = this.variable;
    return clone;
};

tree.Rule.prototype.updateID = function() {
    return this.id = this.zoom + '#' + this.instance + '#' + this.name;
};

tree.Rule.prototype.toString = function() {
    return '[' + tree.Zoom.toString(this.zoom) + '] ' + this.name + ': ' + this.value;
};

function getMean(name) {
    return Object.keys(tree.Reference.selector_cache).map(function(f) {
        return [f, tree.Reference.editDistance(name, f)];
    }).sort(function(a, b) { return a[1] - b[1]; });
}

// second argument, if true, outputs the value of this
// rule without the usual attribute="content" wrapping. Right
// now this is just for the TextSymbolizer, but applies to other
// properties in reference.json which specify serialization=content
tree.Rule.prototype.toXML = function(env, content, sep, format) {
    if (!tree.Reference.validSelector(this.name)) {
        var mean = getMean(this.name);
        var mean_message = '';
        if (mean[0][1] < 3) {
            mean_message = '. Did you mean ' + mean[0][0] + '?';
        }
        return env.error({
            message: "Unrecognized rule: " + this.name + mean_message,
            index: this.index,
            type: 'syntax',
            filename: this.filename
        });
    }

    if ((this.value instanceof tree.Value) &&
        !tree.Reference.validValue(env, this.name, this.value)) {
        if (!tree.Reference.selector(this.name)) {
            return env.error({
                message: 'Unrecognized property: ' +
                    this.name,
                index: this.index,
                type: 'syntax',
                filename: this.filename
            });
        } else {
            var typename;
            if (tree.Reference.selector(this.name).validate) {
                typename = tree.Reference.selector(this.name).validate;
            } else if (typeof tree.Reference.selector(this.name).type === 'object') {
                typename = 'keyword (options: ' + tree.Reference.selector(this.name).type.join(', ') + ')';
            } else {
                typename = tree.Reference.selector(this.name).type;
            }
            return env.error({
                message: 'Invalid value for ' +
                    this.name +
                    ', the type ' + typename +
                    ' is expected. ' + this.value +
                    ' (of type ' + this.value.value[0].is + ') ' +
                    ' was given.',
                index: this.index,
                type: 'syntax',
                filename: this.filename
            });
        }
    }

    if (this.variable) {
        return '';
    } else if (tree.Reference.isFont(this.name) && this.value.value.length > 1) {
        var f = tree._getFontSet(env, this.value.value);
        return 'fontset-name="' + f.name + '"';
    } else if (content) {
        return this.value.toString(env, this.name, sep);
    } else {
        return tree.Reference.selectorName(this.name) +
            '="' +
            this.value.toString(env, this.name) +
            '"';
    }
};

// TODO: Rule ev chain should add fontsets to env.frames
tree.Rule.prototype.ev = function(context) {
    return new tree.Rule(this.name,
        this.value.ev(context),
        this.index,
        this.filename);
};

})(require('../tree'));

},{"../tree":45}],67:[function(require,module,exports){
(function(tree) {

tree.Ruleset = function Ruleset(selectors, rules) {
    this.selectors = selectors;
    this.rules = rules;
    // static cache of find() function
    this._lookups = {};
};
tree.Ruleset.prototype = {
    is: 'ruleset',
    'ev': function(env) {
        var i,
            ruleset = new tree.Ruleset(this.selectors, this.rules.slice(0));
        ruleset.root = this.root;

        // push the current ruleset to the frames stack
        env.frames.unshift(ruleset);

        // Evaluate everything else
        for (i = 0, rule; i < ruleset.rules.length; i++) {
            rule = ruleset.rules[i];
            ruleset.rules[i] = rule.ev ? rule.ev(env) : rule;
        }

        // Pop the stack
        env.frames.shift();

        return ruleset;
    },
    match: function(args) {
        return !args || args.length === 0;
    },
    variables: function() {
        if (this._variables) { return this._variables; }
        else {
            return this._variables = this.rules.reduce(function(hash, r) {
                if (r instanceof tree.Rule && r.variable === true) {
                    hash[r.name] = r;
                }
                return hash;
            }, {});
        }
    },
    variable: function(name) {
        return this.variables()[name];
    },
    rulesets: function() {
        if (this._rulesets) { return this._rulesets; }
        else {
            return this._rulesets = this.rules.filter(function(r) {
                return (r instanceof tree.Ruleset);
            });
        }
    },
    find: function(selector, self) {
        self = self || this;
        var rules = [], rule, match,
            key = selector.toString();

        if (key in this._lookups) { return this._lookups[key]; }

        this.rulesets().forEach(function(rule) {
            if (rule !== self) {
                for (var j = 0; j < rule.selectors.length; j++) {
                    match = selector.match(rule.selectors[j]);
                    if (match) {
                        if (selector.elements.length > 1) {
                            Array.prototype.push.apply(rules, rule.find(
                                new tree.Selector(null, null, null, selector.elements.slice(1)), self));
                        } else {
                            rules.push(rule);
                        }
                        break;
                    }
                }
            }
        });
        return this._lookups[key] = rules;
    },
    // Zooms can use variables. This replaces tree.Zoom objects on selectors
    // with simple bit-arrays that we can compare easily.
    evZooms: function(env) {
        for (var i = 0; i < this.selectors.length; i++) {
            var zval = tree.Zoom.all;
            for (var z = 0; z < this.selectors[i].zoom.length; z++) {
                zval = zval & this.selectors[i].zoom[z].ev(env).zoom;
            }
            this.selectors[i].zoom = zval;
        }
    },
    flatten: function(result, parents, env) {
        var selectors = [], i, j;
        if (this.selectors.length === 0) {
            env.frames = env.frames.concat(this.rules);
        }
        // evaluate zoom variables on this object.
        this.evZooms(env);
        for (i = 0; i < this.selectors.length; i++) {
            var child = this.selectors[i];

            if (!child.filters) {
                // TODO: is this internal inconsistency?
                // This is an invalid filterset.
                continue;
            }

            if (parents.length) {
                for (j = 0; j < parents.length; j++) {
                    var parent = parents[j];

                    var mergedFilters = parent.filters.cloneWith(child.filters);
                    if (mergedFilters === null) {
                        // Filters could be added, but they didn't change the
                        // filters. This means that we only have to clone when
                        // the zoom levels or the attachment is different too.
                        if (parent.zoom === (parent.zoom & child.zoom) &&
                            parent.frame_offset === child.frame_offset &&
                            parent.attachment === child.attachment &&
                            parent.elements.join() === child.elements.join()) {
                            selectors.push(parent);
                            continue;
                        } else {
                            mergedFilters = parent.filters;
                        }
                    } else if (!mergedFilters) {
                        // The merged filters are invalid, that means we don't
                        // have to clone.
                        continue;
                    }

                    var clone = Object.create(tree.Selector.prototype);
                    clone.filters = mergedFilters;
                    clone.zoom = parent.zoom & child.zoom;
                    clone.frame_offset = child.frame_offset;
                    clone.elements = parent.elements.concat(child.elements);
                    if (parent.attachment && child.attachment) {
                        clone.attachment = parent.attachment + '/' + child.attachment;
                    }
                    else clone.attachment = child.attachment || parent.attachment;
                    clone.conditions = parent.conditions + child.conditions;
                    clone.index = child.index;
                    selectors.push(clone);
                }
            } else {
                selectors.push(child);
            }
        }

        var rules = [];
        for (i = 0; i < this.rules.length; i++) {
            var rule = this.rules[i];

            // Recursively flatten any nested rulesets
            if (rule instanceof tree.Ruleset) {
                rule.flatten(result, selectors, env);
            } else if (rule instanceof tree.Rule) {
                rules.push(rule);
            } else if (rule instanceof tree.Invalid) {
                env.error(rule);
            }
        }

        var index = rules.length ? rules[0].index : false;
        for (i = 0; i < selectors.length; i++) {
            // For specificity sort, use the position of the first rule to allow
            // defining attachments that are under current element as a descendant
            // selector.
            if (index !== false) {
                selectors[i].index = index;
            }
            result.push(new tree.Definition(selectors[i], rules.slice()));
        }

        return result;
    }
};
})(require('../tree'));

},{"../tree":45}],68:[function(require,module,exports){
(function(tree) {

tree.Selector = function Selector(filters, zoom, frame_offset, elements, attachment, conditions, index) {
    this.elements = elements || [];
    this.attachment = attachment;
    this.filters = filters || {};
    this.frame_offset = frame_offset;
    this.zoom = typeof zoom !== 'undefined' ? zoom : tree.Zoom.all;
    this.conditions = conditions;
    this.index = index;
};

// Determine the specificity of this selector
// based on the specificity of its elements - calling
// Element.specificity() in order to do so
//
// [ID, Class, Filters, Position in document]
tree.Selector.prototype.specificity = function() {
    return this.elements.reduce(function(memo, e) {
        var spec = e.specificity();
        memo[0] += spec[0];
        memo[1] += spec[1];
        return memo;
    }, [0, 0, this.conditions, this.index]);
};

})(require('../tree'));

},{"../tree":45}],69:[function(require,module,exports){
(function (global){
(function(tree) {
var _ = global._ || require('underscore');

// Given a style's name, attachment, definitions, and an environment object,
// return a stringified style for Mapnik
tree.StyleXML = function(name, attachment, definitions, env) {
    var existing = {};
    var image_filters = [], image_filters_inflate = [], direct_image_filters = [], comp_op = [], opacity = [];

    for (var i = 0; i < definitions.length; i++) {
        for (var j = 0; j < definitions[i].rules.length; j++) {
            if (definitions[i].rules[j].name === 'image-filters') {
                image_filters.push(definitions[i].rules[j]);
            }
            if (definitions[i].rules[j].name === 'image-filters-inflate') {
                image_filters_inflate.push(definitions[i].rules[j]);
            }
            if (definitions[i].rules[j].name === 'direct-image-filters') {
                direct_image_filters.push(definitions[i].rules[j]);
            }
            if (definitions[i].rules[j].name === 'comp-op') {
                comp_op.push(definitions[i].rules[j]);
            }
            if (definitions[i].rules[j].name === 'opacity') {
                opacity.push(definitions[i].rules[j]);
            }
        }
    }

    var rules = definitions.map(function(definition) {
        return definition.toXML(env, existing);
    });

    var attrs_xml = '';

    if (image_filters.length) {
        attrs_xml += ' image-filters="' + _.chain(image_filters)
            // prevent identical filters from being duplicated in the style
            .uniq(function(i) { return i.id; }).map(function(f) {
            return f.ev(env).toXML(env, true, ',', 'image-filter');
        }).value().join(',') + '"';
    }

    if (image_filters_inflate.length) {
        attrs_xml += ' image-filters-inflate="' + image_filters_inflate[0].value.ev(env).toString() + '"';
    }

    if (direct_image_filters.length) {
        attrs_xml += ' direct-image-filters="' + _.chain(direct_image_filters)
            // prevent identical filters from being duplicated in the style
            .uniq(function(i) { return i.id; }).map(function(f) {
            return f.ev(env).toXML(env, true, ',', 'direct-image-filter');
        }).value().join(',') + '"';
    }

    if (comp_op.length && comp_op[0].value.ev(env).value != 'src-over') {
        attrs_xml += ' comp-op="' + comp_op[0].value.ev(env).toString() + '"';
    }

    if (opacity.length && opacity[0].value.ev(env).value != 1) {
        attrs_xml += ' opacity="' + opacity[0].value.ev(env).toString() + '"';
    }
    var rule_string = rules.join('');
    if (!attrs_xml && !rule_string) return '';
    return '<Style name="' + name + '" filter-mode="first"' + attrs_xml + '>\n' + rule_string + '</Style>';
};

})(require('../tree'));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../tree":45,"underscore":163}],70:[function(require,module,exports){
(function(tree) {

tree.URL = function URL(val, paths) {
    this.value = val;
    this.paths = paths;
};

tree.URL.prototype = {
    is: 'uri',
    toString: function() {
        return this.value.toString();
    },
    ev: function(ctx) {
        return new tree.URL(this.value.ev(ctx), this.paths);
    }
};

})(require('../tree'));

},{"../tree":45}],71:[function(require,module,exports){
(function(tree) {

tree.Value = function Value(value) {
    this.value = value;
};

tree.Value.prototype = {
    is: 'value',
    ev: function(env) {
        if (this.value.length === 1) {
            return this.value[0].ev(env);
        } else {
            return new tree.Value(this.value.map(function(v) {
                return v.ev(env);
            }));
        }
    },
    toString: function(env, selector, sep, format) {
        return this.value.map(function(e) {
            return e.toString(env, format);
        }).join(sep || ', ');
    },
    clone: function() {
        var obj = Object.create(tree.Value.prototype);
        if (Array.isArray(obj)) obj.value = this.value.slice();
        else obj.value = this.value;
        obj.is = this.is;
        return obj;
    },

    toJS: function(env) {
      //var v = this.value[0].value[0];
      var val = this.ev(env);
      var v = val.toString();
      if(val.is === "color" || val.is === 'uri' || val.is === 'string' || val.is === 'keyword') {
        v = "'" + v + "'";
      } else if (Array.isArray(this.value) && this.value.length > 1) {
        // This covers something like `line-dasharray: 5, 10;`
        // where the return _value has more than one element.
        // Without this the generated code will look like:
        // _value = 5, 10; which will ignore the 10.
        v = '[' + this.value.join(',') + ']';
      } else if (val.is === 'field') {
        // replace [variable] by ctx['variable']
        v = v.replace(/\[([^\]]*)\]/g, function(matched) {
            return matched.replace(/\[(.*)\]/g, "data['$1']");
        });
      }else if (val.is === 'call') {
        v = JSON.stringify({
            name: val.name,
            args: val.args
        })
      }
      return "_value = " + v + ";";
    }

};

})(require('../tree'));

},{"../tree":45}],72:[function(require,module,exports){
(function(tree) {

tree.Variable = function Variable(name, index, filename) {
    this.name = name;
    this.index = index;
    this.filename = filename;
};

tree.Variable.prototype = {
    is: 'variable',
    toString: function() {
        return this.name;
    },
    ev: function(env) {
        var variable,
            v,
            name = this.name;

        if (this._css) return this._css;

        var thisframe = env.frames.filter(function(f) {
            return f.name == this.name;
        }.bind(this));
        if (thisframe.length) {
            return thisframe[0].value.ev(env);
        } else {
            env.error({
                message: 'variable ' + this.name + ' is undefined',
                index: this.index,
                type: 'runtime',
                filename: this.filename
            });
            return {
                is: 'undefined',
                value: 'undefined'
            };
        }
    }
};

})(require('../tree'));

},{"../tree":45}],73:[function(require,module,exports){
var tree = require('../tree');

// Storage for zoom ranges. Only supports continuous ranges,
// and stores them as bit-sequences so that they can be combined,
// inverted, and compared quickly.
tree.Zoom = function(op, value, index) {
    this.op = op;
    this.value = value;
    this.index = index;
};

tree.Zoom.prototype.setZoom = function(zoom) {
    this.zoom = zoom;
    return this;
};

tree.Zoom.prototype.ev = function(env) {
    var start = 0,
        end = Infinity,
        value = parseInt(this.value.ev(env).toString(), 10),
        zoom = 0;

    if (value > tree.Zoom.maxZoom || value < 0) {
        env.error({
            message: 'Only zoom levels between 0 and ' +
                tree.Zoom.maxZoom + ' supported.',
            index: this.index
        });
    }

    switch (this.op) {
        case '=':
            this.zoom = 1 << value;
            return this;
        case '>':
            start = value + 1;
            break;
        case '>=':
            start = value;
            break;
        case '<':
            end = value - 1;
            break;
        case '<=':
            end = value;
            break;
    }
    for (var i = 0; i <= tree.Zoom.maxZoom; i++) {
        if (i >= start && i <= end) {
            zoom |= (1 << i);
        }
    }
    this.zoom = zoom;
    return this;
};

tree.Zoom.prototype.toString = function() {
    return this.zoom;
};

// Covers all zoomlevels from 0 to 22
tree.Zoom.all = 0x7FFFFF;

tree.Zoom.maxZoom = 22;

tree.Zoom.ranges = {
     0: 1000000000,
     1: 500000000,
     2: 200000000,
     3: 100000000,
     4: 50000000,
     5: 25000000,
     6: 12500000,
     7: 6500000,
     8: 3000000,
     9: 1500000,
    10: 750000,
    11: 400000,
    12: 200000,
    13: 100000,
    14: 50000,
    15: 25000,
    16: 12500,
    17: 5000,
    18: 2500,
    19: 1500,
    20: 750,
    21: 500,
    22: 250,
    23: 100
};

// Only works for single range zooms. `[XXX....XXXXX.........]` is invalid.
tree.Zoom.prototype.toXML = function() {
    var conditions = [];
    if (this.zoom != tree.Zoom.all) {
        var start = null, end = null;
        for (var i = 0; i <= tree.Zoom.maxZoom; i++) {
            if (this.zoom & (1 << i)) {
                if (start === null) start = i;
                end = i;
            }
        }
        if (start > 0) conditions.push('    <MaxScaleDenominator>' +
            tree.Zoom.ranges[start] + '</MaxScaleDenominator>\n');
        if (end < 22) conditions.push('    <MinScaleDenominator>' +
            tree.Zoom.ranges[end + 1] + '</MinScaleDenominator>\n');
    }
    return conditions;
};

tree.Zoom.prototype.toString = function() {
    var str = '';
    for (var i = 0; i <= tree.Zoom.maxZoom; i++) {
        str += (this.zoom & (1 << i)) ? 'X' : '.';
    }
    return str;
};

},{"../tree":45}],74:[function(require,module,exports){
module.exports={
  "_args": [
    [
      {
        "raw": "carto@github:cartodb/carto#master",
        "scope": null,
        "escapedName": "carto",
        "name": "carto",
        "rawSpec": "github:cartodb/carto#master",
        "spec": "github:cartodb/carto#master",
        "type": "hosted",
        "hosted": {
          "type": "github",
          "ssh": "git@github.com:cartodb/carto.git#master",
          "sshUrl": "git+ssh://git@github.com/cartodb/carto.git#master",
          "httpsUrl": "git+https://github.com/cartodb/carto.git#master",
          "gitUrl": "git://github.com/cartodb/carto.git#master",
          "shortcut": "github:cartodb/carto#master",
          "directUrl": "https://raw.githubusercontent.com/cartodb/carto/master/package.json"
        }
      },
      "/Users/ruben/Projects/Carto/torque"
    ]
  ],
  "_from": "cartodb/carto#master",
  "_id": "carto@0.15.1-cdb4",
  "_inCache": true,
  "_location": "/carto",
  "_phantomChildren": {},
  "_requested": {
    "raw": "carto@github:cartodb/carto#master",
    "scope": null,
    "escapedName": "carto",
    "name": "carto",
    "rawSpec": "github:cartodb/carto#master",
    "spec": "github:cartodb/carto#master",
    "type": "hosted",
    "hosted": {
      "type": "github",
      "ssh": "git@github.com:cartodb/carto.git#master",
      "sshUrl": "git+ssh://git@github.com/cartodb/carto.git#master",
      "httpsUrl": "git+https://github.com/cartodb/carto.git#master",
      "gitUrl": "git://github.com/cartodb/carto.git#master",
      "shortcut": "github:cartodb/carto#master",
      "directUrl": "https://raw.githubusercontent.com/cartodb/carto/master/package.json"
    }
  },
  "_requiredBy": [
    "/"
  ],
  "_resolved": "git://github.com/cartodb/carto.git#cbe66020f98647429d2bb04b7cf73dcf194f2abf",
  "_shasum": "81502a07a925021884ef159715147788290f7910",
  "_shrinkwrap": null,
  "_spec": "carto@github:cartodb/carto#master",
  "_where": "/Users/ruben/Projects/Carto/torque",
  "author": {
    "name": "CartoDB",
    "url": "http://cartodb.com/"
  },
  "bin": {
    "carto": "./bin/carto"
  },
  "bugs": {
    "url": "https://github.com/cartodb/carto/issues"
  },
  "contributors": [
    {
      "name": "Tom MacWright",
      "email": "macwright@gmail.com"
    },
    {
      "name": "Konstantin Käfer"
    },
    {
      "name": "Alexis Sellier",
      "email": "self@cloudhead.net"
    },
    {
      "name": "Raul Ochoa",
      "email": "rochoa@cartodb.com"
    },
    {
      "name": "Javi Santana",
      "email": "jsantana@cartodb.com"
    }
  ],
  "dependencies": {
    "mapnik-reference": "~6.0.2",
    "optimist": "~0.6.0",
    "underscore": "1.8.3"
  },
  "description": "CartoCSS Stylesheet Compiler",
  "devDependencies": {
    "browserify": "~7.0.0",
    "coveralls": "~2.10.1",
    "istanbul": "~0.2.14",
    "jshint": "0.2.x",
    "mocha": "1.12.x",
    "sax": "0.1.x",
    "uglify-js": "1.3.3"
  },
  "engines": {
    "node": ">=0.4.x"
  },
  "gitHead": "cbe66020f98647429d2bb04b7cf73dcf194f2abf",
  "homepage": "https://github.com/cartodb/carto#readme",
  "keywords": [
    "maps",
    "css",
    "stylesheets"
  ],
  "licenses": [
    {
      "type": "Apache"
    }
  ],
  "main": "./lib/carto/index",
  "man": [
    "./man/carto.1"
  ],
  "name": "carto",
  "optionalDependencies": {},
  "readme": "# CartoCSS\n\n[![Build Status](https://travis-ci.org/CartoDB/carto.png?branch=master)](https://travis-ci.org/CartoDB/carto)\n\nIs as stylesheet renderer for javascript, It's an evolution of the Mapnik renderer from Mapbox.\nPlease, see original [Mapbox repo](http://github.com/mapbox/carto) for more information and credits\n\n## Quick Start\n\n```javascript\n// shader is a CartoCSS object\n\nvar cartocss = [\n    '#layer {',\n    ' marker-width: [property]',\n    ' marker-fill: red',\n    '}'\n].join('')\nvar shader = new carto.RendererJS().render(cartocss);\nvar layers = shader.getLayers()\nfor (var i = 0; i < layers.length; ++i) {\n    var layer = layers[i];\n    console.log(\"layer name: \", layer.fullName())\n    console.log(\"- frames: \", layer.frames())\n    console.log(\"- attachment: \", layer.attachment())\n\n    var layerShader = layer.getStyle({ property: 1 }, { zoom: 10 })\n    console.log(layerShader['marker-width']) // 1\n    console.log(layerShader['marker-fill']) // #FF0000\n}\n\n```\n\n# API\n\n## RendererJS\n\n### render(cartocss)\n\n## CartoCSS\n\ncompiled cartocss object\n\n### getLayers\n\nreturn the layers, an array of ``CartoCSS.Layer`` object\n\n### getDefault\n\nreturn the default layer (``CartoCSS.Layer``), usually the Map layer\n\n\n### findLayer(where)\n\nfind a layer using where object.\n\n```\nshader.findLayer({ name: 'test' })\n```\n\n## CartoCSS.Layer\n\n### getStyle(props, context)\n\nreturn the evaluated style:\n    - props: object containing properties needed to render the style. If the cartocss style uses\n      some variables they should be passed in this object\n    - context: rendering context variables like ``zoom`` or animation ``frame``\n\n\n\n\n\n\n\n\n\n\n## Reference Documentation\n\n* [mapbox.com/carto](http://mapbox.com/carto/)\n\n\n",
  "readmeFilename": "README.md",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/cartodb/carto.git"
  },
  "scripts": {
    "coverage": "istanbul cover ./node_modules/.bin/_mocha && coveralls < ./coverage/lcov.info",
    "pretest": "npm install",
    "tdd": "env HIDE_LOGS=true mocha -w -R spec",
    "test": "mocha -R spec"
  },
  "url": "https://github.com/cartodb/carto",
  "version": "0.15.1-cdb4"
}

},{}],75:[function(require,module,exports){
!function() {

var cartocolor = {
    "Burg": {
        "2": [
            "#ffc6c4",
            "#672044"
        ],
        "3": [
            "#ffc6c4",
            "#cc607d",
            "#672044"
        ],
        "4": [
            "#ffc6c4",
            "#e38191",
            "#ad466c",
            "#672044"
        ],
        "5": [
            "#ffc6c4",
            "#ee919b",
            "#cc607d",
            "#9e3963",
            "#672044"
        ],
        "6": [
            "#ffc6c4",
            "#f29ca3",
            "#da7489",
            "#b95073",
            "#93345d",
            "#672044"
        ],
        "7": [
            "#ffc6c4",
            "#f4a3a8",
            "#e38191",
            "#cc607d",
            "#ad466c",
            "#8b3058",
            "#672044"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "BurgYl": {
        "2": [
            "#fbe6c5",
            "#70284a"
        ],
        "3": [
            "#fbe6c5",
            "#dc7176",
            "#70284a"
        ],
        "4": [
            "#fbe6c5",
            "#ee8a82",
            "#c8586c",
            "#70284a"
        ],
        "5": [
            "#fbe6c5",
            "#f2a28a",
            "#dc7176",
            "#b24b65",
            "#70284a"
        ],
        "6": [
            "#fbe6c5",
            "#f4b191",
            "#e7807d",
            "#d06270",
            "#a44360",
            "#70284a"
        ],
        "7": [
            "#fbe6c5",
            "#f5ba98",
            "#ee8a82",
            "#dc7176",
            "#c8586c",
            "#9c3f5d",
            "#70284a"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "RedOr": {
        "2": [
            "#f6d2a9",
            "#b13f64"
        ],
        "3": [
            "#f6d2a9",
            "#ea8171",
            "#b13f64"
        ],
        "4": [
            "#f6d2a9",
            "#f19c7c",
            "#dd686c",
            "#b13f64"
        ],
        "5": [
            "#f6d2a9",
            "#f3aa84",
            "#ea8171",
            "#d55d6a",
            "#b13f64"
        ],
        "6": [
            "#f6d2a9",
            "#f4b28a",
            "#ef9177",
            "#e3726d",
            "#cf5669",
            "#b13f64"
        ],
        "7": [
            "#f6d2a9",
            "#f5b78e",
            "#f19c7c",
            "#ea8171",
            "#dd686c",
            "#ca5268",
            "#b13f64"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "OrYel": {
        "2": [
            "#ecda9a",
            "#ee4d5a"
        ],
        "3": [
            "#ecda9a",
            "#f7945d",
            "#ee4d5a"
        ],
        "4": [
            "#ecda9a",
            "#f3ad6a",
            "#f97b57",
            "#ee4d5a"
        ],
        "5": [
            "#ecda9a",
            "#f1b973",
            "#f7945d",
            "#f86f56",
            "#ee4d5a"
        ],
        "6": [
            "#ecda9a",
            "#f0c079",
            "#f5a363",
            "#f98558",
            "#f76856",
            "#ee4d5a"
        ],
        "7": [
            "#ecda9a",
            "#efc47e",
            "#f3ad6a",
            "#f7945d",
            "#f97b57",
            "#f66356",
            "#ee4d5a"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "Peach": {
        "2": [
            "#fde0c5",
            "#eb4a40"
        ],
        "3": [
            "#fde0c5",
            "#f59e72",
            "#eb4a40"
        ],
        "4": [
            "#fde0c5",
            "#f8b58b",
            "#f2855d",
            "#eb4a40"
        ],
        "5": [
            "#fde0c5",
            "#f9c098",
            "#f59e72",
            "#f17854",
            "#eb4a40"
        ],
        "6": [
            "#fde0c5",
            "#fac7a1",
            "#f7ac80",
            "#f38f65",
            "#f0704f",
            "#eb4a40"
        ],
        "7": [
            "#fde0c5",
            "#facba6",
            "#f8b58b",
            "#f59e72",
            "#f2855d",
            "#ef6a4c",
            "#eb4a40"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "PinkYl": {
        "2": [
            "#fef6b5",
            "#e15383"
        ],
        "3": [
            "#fef6b5",
            "#ffa679",
            "#e15383"
        ],
        "4": [
            "#fef6b5",
            "#ffc285",
            "#fa8a76",
            "#e15383"
        ],
        "5": [
            "#fef6b5",
            "#ffd08e",
            "#ffa679",
            "#f67b77",
            "#e15383"
        ],
        "6": [
            "#fef6b5",
            "#ffd795",
            "#ffb77f",
            "#fd9576",
            "#f37378",
            "#e15383"
        ],
        "7": [
            "#fef6b5",
            "#ffdd9a",
            "#ffc285",
            "#ffa679",
            "#fa8a76",
            "#f16d7a",
            "#e15383"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "Mint": {
        "2": [
            "#e4f1e1",
            "#0d585f"
        ],
        "3": [
            "#e4f1e1",
            "#63a6a0",
            "#0d585f"
        ],
        "4": [
            "#e4f1e1",
            "#89c0b6",
            "#448c8a",
            "#0d585f"
        ],
        "5": [
            "#E4F1E1",
            "#9CCDC1",
            "#63A6A0",
            "#337F7F",
            "#0D585F"
        ],
        "6": [
            "#e4f1e1",
            "#abd4c7",
            "#7ab5ad",
            "#509693",
            "#2c7778",
            "#0d585f"
        ],
        "7": [
            "#e4f1e1",
            "#b4d9cc",
            "#89c0b6",
            "#63a6a0",
            "#448c8a",
            "#287274",
            "#0d585f"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "BluGrn": {
        "2": [
            "#c4e6c3",
            "#1d4f60"
        ],
        "3": [
            "#c4e6c3",
            "#4da284",
            "#1d4f60"
        ],
        "4": [
            "#c4e6c3",
            "#6dbc90",
            "#36877a",
            "#1d4f60"
        ],
        "5": [
            "#c4e6c3",
            "#80c799",
            "#4da284",
            "#2d7974",
            "#1d4f60"
        ],
        "6": [
            "#c4e6c3",
            "#8dce9f",
            "#5fb28b",
            "#3e927e",
            "#297071",
            "#1d4f60"
        ],
        "7": [
            "#c4e6c3",
            "#96d2a4",
            "#6dbc90",
            "#4da284",
            "#36877a",
            "#266b6e",
            "#1d4f60"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "DarkMint": {
        "2": [
            "#d2fbd4",
            "#123f5a"
        ],
        "3": [
            "#d2fbd4",
            "#559c9e",
            "#123f5a"
        ],
        "4": [
            "#d2fbd4",
            "#7bbcb0",
            "#3a7c89",
            "#123f5a"
        ],
        "5": [
            "#d2fbd4",
            "#8eccb9",
            "#559c9e",
            "#2b6c7f",
            "#123f5a"
        ],
        "6": [
            "#d2fbd4",
            "#9cd5be",
            "#6cafa9",
            "#458892",
            "#266377",
            "#123f5a"
        ],
        "7": [
            "#d2fbd4",
            "#a5dbc2",
            "#7bbcb0",
            "#559c9e",
            "#3a7c89",
            "#235d72",
            "#123f5a"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "Emrld": {
        "2": [
            "#d3f2a3",
            "#074050"
        ],
        "3": [
            "#d3f2a3",
            "#4c9b82",
            "#074050"
        ],
        "4": [
            "#d3f2a3",
            "#6cc08b",
            "#217a79",
            "#074050"
        ],
        "5": [
            "#d3f2a3",
            "#82d091",
            "#4c9b82",
            "#19696f",
            "#074050"
        ],
        "6": [
            "#d3f2a3",
            "#8fda94",
            "#60b187",
            "#35877d",
            "#145f69",
            "#074050"
        ],
        "7": [
            "#d3f2a3",
            "#97e196",
            "#6cc08b",
            "#4c9b82",
            "#217a79",
            "#105965",
            "#074050"
        ],
        "tags": [
            "quantitative"
        ]
    },
    "ag_GrnYl": {
        "2": [
            "#245668",
            "#EDEF5D"
        ],
        "3": [
            "#245668",
            "#39AB7E",
            "#EDEF5D"
        ],
        "4": [
            "#245668",
            "#0D8F81",
            "#6EC574",
            "#EDEF5D"
        ],
        "5": [
            "#245668",
            "#04817E",
            "#39AB7E",
            "#8BD16D",
            "#EDEF5D"
        ],
        "6": [
            "#245668",
            "#09787C",
            "#1D9A81",
            "#58BB79",
            "#9DD869",
            "#EDEF5D"
        ],
        "7": [
            "#245668",
            "#0F7279",
            "#0D8F81",
            "#39AB7E",
            "#6EC574",
            "#A9DC67",
            "#EDEF5D"
        ],
        "tags": [
            "aggregation"
        ]
    },
    "BluYl": {
        "2": [
            "#f7feae",
            "#045275"
        ],
        "3": [
            "#f7feae",
            "#46aea0",
            "#045275"
        ],
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        "6": [
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            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#B3B3B3"
        ],
        "7": [
            "#66C5CC",
            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#FE88B1",
            "#B3B3B3"
        ],
        "8": [
            "#66C5CC",
            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#FE88B1",
            "#C9DB74",
            "#B3B3B3"
        ],
        "9": [
            "#66C5CC",
            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#FE88B1",
            "#C9DB74",
            "#8BE0A4",
            "#B3B3B3"
        ],
        "10": [
            "#66C5CC",
            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#FE88B1",
            "#C9DB74",
            "#8BE0A4",
            "#B497E7",
            "#B3B3B3"
        ],
        "11": [
            "#66C5CC",
            "#F6CF71",
            "#F89C74",
            "#DCB0F2",
            "#87C55F",
            "#9EB9F3",
            "#FE88B1",
            "#C9DB74",
            "#8BE0A4",
            "#B497E7",
            "#D3B484",
            "#B3B3B3"
        ],
        "tags": [
            "qualitative"
        ]
    },
    "Prism": {
        "2": [
            "#5F4690",
            "#1D6996",
            "#666666"
        ],
        "3": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#666666"
        ],
        "4": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#666666"
        ],
        "5": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#666666"
        ],
        "6": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#666666"
        ],
        "7": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#E17C05",
            "#666666"
        ],
        "8": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#E17C05",
            "#CC503E",
            "#666666"
        ],
        "9": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#E17C05",
            "#CC503E",
            "#94346E",
            "#666666"
        ],
        "10": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#E17C05",
            "#CC503E",
            "#94346E",
            "#6F4070",
            "#666666"
        ],
        "11": [
            "#5F4690",
            "#1D6996",
            "#38A6A5",
            "#0F8554",
            "#73AF48",
            "#EDAD08",
            "#E17C05",
            "#CC503E",
            "#94346E",
            "#6F4070",
            "#994E95",
            "#666666"
        ],
        "tags": [
            "qualitative"
        ]
    },
    "Safe": {
        "2": [
            "#88CCEE",
            "#CC6677",
            "#888888"
        ],
        "3": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#888888"
        ],
        "4": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#888888"
        ],
        "5": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#888888"
        ],
        "6": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#888888"
        ],
        "7": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#44AA99",
            "#888888"
        ],
        "8": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#44AA99",
            "#999933",
            "#888888"
        ],
        "9": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#44AA99",
            "#999933",
            "#882255",
            "#888888"
        ],
        "10": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#44AA99",
            "#999933",
            "#882255",
            "#661100",
            "#888888"
        ],
        "11": [
            "#88CCEE",
            "#CC6677",
            "#DDCC77",
            "#117733",
            "#332288",
            "#AA4499",
            "#44AA99",
            "#999933",
            "#882255",
            "#661100",
            "#6699CC",
            "#888888"
        ],
        "tags": [
            "qualitative",
            "colorblind"
        ]
    },
    "Vivid": {
        "2": [
            "#E58606",
            "#5D69B1",
            "#A5AA99"
        ],
        "3": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#A5AA99"
        ],
        "4": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#A5AA99"
        ],
        "5": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#A5AA99"
        ],
        "6": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#A5AA99"
        ],
        "7": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#DAA51B",
            "#A5AA99"
        ],
        "8": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#DAA51B",
            "#2F8AC4",
            "#A5AA99"
        ],
        "9": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#DAA51B",
            "#2F8AC4",
            "#764E9F",
            "#A5AA99"
        ],
        "10": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#DAA51B",
            "#2F8AC4",
            "#764E9F",
            "#ED645A",
            "#A5AA99"
        ],
        "11": [
            "#E58606",
            "#5D69B1",
            "#52BCA3",
            "#99C945",
            "#CC61B0",
            "#24796C",
            "#DAA51B",
            "#2F8AC4",
            "#764E9F",
            "#ED645A",
            "#CC3A8E",
            "#A5AA99"
        ],
        "tags": [
            "qualitative"
        ]
    }
};

var colorbrewer_tags = {
  "Blues": { "tags": ["quantitative"] },
  "BrBG": { "tags": ["diverging"] },
  "Greys": { "tags": ["quantitative"] },
  "PiYG": { "tags": ["diverging"] },
  "PRGn": { "tags": ["diverging"] },
  "Purples": { "tags": ["quantitative"] },
  "RdYlGn": { "tags": ["diverging"] },
  "Spectral": { "tags": ["diverging"] },
  "YlOrBr": { "tags": ["quantitative"] },
  "YlGn": { "tags": ["quantitative"] },
  "YlGnBu": { "tags": ["quantitative"] },
  "YlOrRd": { "tags": ["quantitative"] }
}

var colorbrewer = require('colorbrewer');

// augment colorbrewer with tags
for (var r in colorbrewer) {
  var ramps = colorbrewer[r];
  var augmentedRamps = {};
  for (var i in ramps) {
    augmentedRamps[i] = ramps[i];
  }

  if (r in colorbrewer_tags) {
    augmentedRamps.tags = colorbrewer_tags[r].tags;
  }

  cartocolor['cb_' + r] = augmentedRamps;
}

if (typeof define === "function" && define.amd) {
    define(cartocolor);
} else if (typeof module === "object" && module.exports) {
    module.exports = cartocolor;
} else {
    this.colorbrewer = cartocolor;
}

}();

},{"colorbrewer":78}],76:[function(require,module,exports){
module.exports = require('./cartocolor');

},{"./cartocolor":75}],77:[function(require,module,exports){
// This product includes color specifications and designs developed by Cynthia Brewer (http://colorbrewer.org/).
// JavaScript specs as packaged in the D3 library (d3js.org). Please see license at http://colorbrewer.org/export/LICENSE.txt
!function() {

var colorbrewer = {YlGn: {
3: ["#f7fcb9","#addd8e","#31a354"],
4: ["#ffffcc","#c2e699","#78c679","#238443"],
5: ["#ffffcc","#c2e699","#78c679","#31a354","#006837"],
6: ["#ffffcc","#d9f0a3","#addd8e","#78c679","#31a354","#006837"],
7: ["#ffffcc","#d9f0a3","#addd8e","#78c679","#41ab5d","#238443","#005a32"],
8: ["#ffffe5","#f7fcb9","#d9f0a3","#addd8e","#78c679","#41ab5d","#238443","#005a32"],
9: ["#ffffe5","#f7fcb9","#d9f0a3","#addd8e","#78c679","#41ab5d","#238443","#006837","#004529"]
},YlGnBu: {
3: ["#edf8b1","#7fcdbb","#2c7fb8"],
4: ["#ffffcc","#a1dab4","#41b6c4","#225ea8"],
5: ["#ffffcc","#a1dab4","#41b6c4","#2c7fb8","#253494"],
6: ["#ffffcc","#c7e9b4","#7fcdbb","#41b6c4","#2c7fb8","#253494"],
7: ["#ffffcc","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#0c2c84"],
8: ["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#0c2c84"],
9: ["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"]
},GnBu: {
3: ["#e0f3db","#a8ddb5","#43a2ca"],
4: ["#f0f9e8","#bae4bc","#7bccc4","#2b8cbe"],
5: ["#f0f9e8","#bae4bc","#7bccc4","#43a2ca","#0868ac"],
6: ["#f0f9e8","#ccebc5","#a8ddb5","#7bccc4","#43a2ca","#0868ac"],
7: ["#f0f9e8","#ccebc5","#a8ddb5","#7bccc4","#4eb3d3","#2b8cbe","#08589e"],
8: ["#f7fcf0","#e0f3db","#ccebc5","#a8ddb5","#7bccc4","#4eb3d3","#2b8cbe","#08589e"],
9: ["#f7fcf0","#e0f3db","#ccebc5","#a8ddb5","#7bccc4","#4eb3d3","#2b8cbe","#0868ac","#084081"]
},BuGn: {
3: ["#e5f5f9","#99d8c9","#2ca25f"],
4: ["#edf8fb","#b2e2e2","#66c2a4","#238b45"],
5: ["#edf8fb","#b2e2e2","#66c2a4","#2ca25f","#006d2c"],
6: ["#edf8fb","#ccece6","#99d8c9","#66c2a4","#2ca25f","#006d2c"],
7: ["#edf8fb","#ccece6","#99d8c9","#66c2a4","#41ae76","#238b45","#005824"],
8: ["#f7fcfd","#e5f5f9","#ccece6","#99d8c9","#66c2a4","#41ae76","#238b45","#005824"],
9: ["#f7fcfd","#e5f5f9","#ccece6","#99d8c9","#66c2a4","#41ae76","#238b45","#006d2c","#00441b"]
},PuBuGn: {
3: ["#ece2f0","#a6bddb","#1c9099"],
4: ["#f6eff7","#bdc9e1","#67a9cf","#02818a"],
5: ["#f6eff7","#bdc9e1","#67a9cf","#1c9099","#016c59"],
6: ["#f6eff7","#d0d1e6","#a6bddb","#67a9cf","#1c9099","#016c59"],
7: ["#f6eff7","#d0d1e6","#a6bddb","#67a9cf","#3690c0","#02818a","#016450"],
8: ["#fff7fb","#ece2f0","#d0d1e6","#a6bddb","#67a9cf","#3690c0","#02818a","#016450"],
9: ["#fff7fb","#ece2f0","#d0d1e6","#a6bddb","#67a9cf","#3690c0","#02818a","#016c59","#014636"]
},PuBu: {
3: ["#ece7f2","#a6bddb","#2b8cbe"],
4: ["#f1eef6","#bdc9e1","#74a9cf","#0570b0"],
5: ["#f1eef6","#bdc9e1","#74a9cf","#2b8cbe","#045a8d"],
6: ["#f1eef6","#d0d1e6","#a6bddb","#74a9cf","#2b8cbe","#045a8d"],
7: ["#f1eef6","#d0d1e6","#a6bddb","#74a9cf","#3690c0","#0570b0","#034e7b"],
8: ["#fff7fb","#ece7f2","#d0d1e6","#a6bddb","#74a9cf","#3690c0","#0570b0","#034e7b"],
9: ["#fff7fb","#ece7f2","#d0d1e6","#a6bddb","#74a9cf","#3690c0","#0570b0","#045a8d","#023858"]
},BuPu: {
3: ["#e0ecf4","#9ebcda","#8856a7"],
4: ["#edf8fb","#b3cde3","#8c96c6","#88419d"],
5: ["#edf8fb","#b3cde3","#8c96c6","#8856a7","#810f7c"],
6: ["#edf8fb","#bfd3e6","#9ebcda","#8c96c6","#8856a7","#810f7c"],
7: ["#edf8fb","#bfd3e6","#9ebcda","#8c96c6","#8c6bb1","#88419d","#6e016b"],
8: ["#f7fcfd","#e0ecf4","#bfd3e6","#9ebcda","#8c96c6","#8c6bb1","#88419d","#6e016b"],
9: ["#f7fcfd","#e0ecf4","#bfd3e6","#9ebcda","#8c96c6","#8c6bb1","#88419d","#810f7c","#4d004b"]
},RdPu: {
3: ["#fde0dd","#fa9fb5","#c51b8a"],
4: ["#feebe2","#fbb4b9","#f768a1","#ae017e"],
5: ["#feebe2","#fbb4b9","#f768a1","#c51b8a","#7a0177"],
6: ["#feebe2","#fcc5c0","#fa9fb5","#f768a1","#c51b8a","#7a0177"],
7: ["#feebe2","#fcc5c0","#fa9fb5","#f768a1","#dd3497","#ae017e","#7a0177"],
8: ["#fff7f3","#fde0dd","#fcc5c0","#fa9fb5","#f768a1","#dd3497","#ae017e","#7a0177"],
9: ["#fff7f3","#fde0dd","#fcc5c0","#fa9fb5","#f768a1","#dd3497","#ae017e","#7a0177","#49006a"]
},PuRd: {
3: ["#e7e1ef","#c994c7","#dd1c77"],
4: ["#f1eef6","#d7b5d8","#df65b0","#ce1256"],
5: ["#f1eef6","#d7b5d8","#df65b0","#dd1c77","#980043"],
6: ["#f1eef6","#d4b9da","#c994c7","#df65b0","#dd1c77","#980043"],
7: ["#f1eef6","#d4b9da","#c994c7","#df65b0","#e7298a","#ce1256","#91003f"],
8: ["#f7f4f9","#e7e1ef","#d4b9da","#c994c7","#df65b0","#e7298a","#ce1256","#91003f"],
9: ["#f7f4f9","#e7e1ef","#d4b9da","#c994c7","#df65b0","#e7298a","#ce1256","#980043","#67001f"]
},OrRd: {
3: ["#fee8c8","#fdbb84","#e34a33"],
4: ["#fef0d9","#fdcc8a","#fc8d59","#d7301f"],
5: ["#fef0d9","#fdcc8a","#fc8d59","#e34a33","#b30000"],
6: ["#fef0d9","#fdd49e","#fdbb84","#fc8d59","#e34a33","#b30000"],
7: ["#fef0d9","#fdd49e","#fdbb84","#fc8d59","#ef6548","#d7301f","#990000"],
8: ["#fff7ec","#fee8c8","#fdd49e","#fdbb84","#fc8d59","#ef6548","#d7301f","#990000"],
9: ["#fff7ec","#fee8c8","#fdd49e","#fdbb84","#fc8d59","#ef6548","#d7301f","#b30000","#7f0000"]
},YlOrRd: {
3: ["#ffeda0","#feb24c","#f03b20"],
4: ["#ffffb2","#fecc5c","#fd8d3c","#e31a1c"],
5: ["#ffffb2","#fecc5c","#fd8d3c","#f03b20","#bd0026"],
6: ["#ffffb2","#fed976","#feb24c","#fd8d3c","#f03b20","#bd0026"],
7: ["#ffffb2","#fed976","#feb24c","#fd8d3c","#fc4e2a","#e31a1c","#b10026"],
8: ["#ffffcc","#ffeda0","#fed976","#feb24c","#fd8d3c","#fc4e2a","#e31a1c","#b10026"],
9: ["#ffffcc","#ffeda0","#fed976","#feb24c","#fd8d3c","#fc4e2a","#e31a1c","#bd0026","#800026"]
},YlOrBr: {
3: ["#fff7bc","#fec44f","#d95f0e"],
4: ["#ffffd4","#fed98e","#fe9929","#cc4c02"],
5: ["#ffffd4","#fed98e","#fe9929","#d95f0e","#993404"],
6: ["#ffffd4","#fee391","#fec44f","#fe9929","#d95f0e","#993404"],
7: ["#ffffd4","#fee391","#fec44f","#fe9929","#ec7014","#cc4c02","#8c2d04"],
8: ["#ffffe5","#fff7bc","#fee391","#fec44f","#fe9929","#ec7014","#cc4c02","#8c2d04"],
9: ["#ffffe5","#fff7bc","#fee391","#fec44f","#fe9929","#ec7014","#cc4c02","#993404","#662506"]
},Purples: {
3: ["#efedf5","#bcbddc","#756bb1"],
4: ["#f2f0f7","#cbc9e2","#9e9ac8","#6a51a3"],
5: ["#f2f0f7","#cbc9e2","#9e9ac8","#756bb1","#54278f"],
6: ["#f2f0f7","#dadaeb","#bcbddc","#9e9ac8","#756bb1","#54278f"],
7: ["#f2f0f7","#dadaeb","#bcbddc","#9e9ac8","#807dba","#6a51a3","#4a1486"],
8: ["#fcfbfd","#efedf5","#dadaeb","#bcbddc","#9e9ac8","#807dba","#6a51a3","#4a1486"],
9: ["#fcfbfd","#efedf5","#dadaeb","#bcbddc","#9e9ac8","#807dba","#6a51a3","#54278f","#3f007d"]
},Blues: {
3: ["#deebf7","#9ecae1","#3182bd"],
4: ["#eff3ff","#bdd7e7","#6baed6","#2171b5"],
5: ["#eff3ff","#bdd7e7","#6baed6","#3182bd","#08519c"],
6: ["#eff3ff","#c6dbef","#9ecae1","#6baed6","#3182bd","#08519c"],
7: ["#eff3ff","#c6dbef","#9ecae1","#6baed6","#4292c6","#2171b5","#084594"],
8: ["#f7fbff","#deebf7","#c6dbef","#9ecae1","#6baed6","#4292c6","#2171b5","#084594"],
9: ["#f7fbff","#deebf7","#c6dbef","#9ecae1","#6baed6","#4292c6","#2171b5","#08519c","#08306b"]
},Greens: {
3: ["#e5f5e0","#a1d99b","#31a354"],
4: ["#edf8e9","#bae4b3","#74c476","#238b45"],
5: ["#edf8e9","#bae4b3","#74c476","#31a354","#006d2c"],
6: ["#edf8e9","#c7e9c0","#a1d99b","#74c476","#31a354","#006d2c"],
7: ["#edf8e9","#c7e9c0","#a1d99b","#74c476","#41ab5d","#238b45","#005a32"],
8: ["#f7fcf5","#e5f5e0","#c7e9c0","#a1d99b","#74c476","#41ab5d","#238b45","#005a32"],
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4: ["#feedde","#fdbe85","#fd8d3c","#d94701"],
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3: ["#fee0d2","#fc9272","#de2d26"],
4: ["#fee5d9","#fcae91","#fb6a4a","#cb181d"],
5: ["#fee5d9","#fcae91","#fb6a4a","#de2d26","#a50f15"],
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3: ["#f0f0f0","#bdbdbd","#636363"],
4: ["#f7f7f7","#cccccc","#969696","#525252"],
5: ["#f7f7f7","#cccccc","#969696","#636363","#252525"],
6: ["#f7f7f7","#d9d9d9","#bdbdbd","#969696","#636363","#252525"],
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4: ["#e66101","#fdb863","#b2abd2","#5e3c99"],
5: ["#e66101","#fdb863","#f7f7f7","#b2abd2","#5e3c99"],
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4: ["#a6611a","#dfc27d","#80cdc1","#018571"],
5: ["#a6611a","#dfc27d","#f5f5f5","#80cdc1","#018571"],
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4: ["#7b3294","#c2a5cf","#a6dba0","#008837"],
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3: ["#e9a3c9","#f7f7f7","#a1d76a"],
4: ["#d01c8b","#f1b6da","#b8e186","#4dac26"],
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3: ["#ef8a62","#f7f7f7","#67a9cf"],
4: ["#ca0020","#f4a582","#92c5de","#0571b0"],
5: ["#ca0020","#f4a582","#f7f7f7","#92c5de","#0571b0"],
6: ["#b2182b","#ef8a62","#fddbc7","#d1e5f0","#67a9cf","#2166ac"],
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8: ["#b2182b","#d6604d","#f4a582","#fddbc7","#d1e5f0","#92c5de","#4393c3","#2166ac"],
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3: ["#ef8a62","#ffffff","#999999"],
4: ["#ca0020","#f4a582","#bababa","#404040"],
5: ["#ca0020","#f4a582","#ffffff","#bababa","#404040"],
6: ["#b2182b","#ef8a62","#fddbc7","#e0e0e0","#999999","#4d4d4d"],
7: ["#b2182b","#ef8a62","#fddbc7","#ffffff","#e0e0e0","#999999","#4d4d4d"],
8: ["#b2182b","#d6604d","#f4a582","#fddbc7","#e0e0e0","#bababa","#878787","#4d4d4d"],
9: ["#b2182b","#d6604d","#f4a582","#fddbc7","#ffffff","#e0e0e0","#bababa","#878787","#4d4d4d"],
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3: ["#fc8d59","#ffffbf","#91bfdb"],
4: ["#d7191c","#fdae61","#abd9e9","#2c7bb6"],
5: ["#d7191c","#fdae61","#ffffbf","#abd9e9","#2c7bb6"],
6: ["#d73027","#fc8d59","#fee090","#e0f3f8","#91bfdb","#4575b4"],
7: ["#d73027","#fc8d59","#fee090","#ffffbf","#e0f3f8","#91bfdb","#4575b4"],
8: ["#d73027","#f46d43","#fdae61","#fee090","#e0f3f8","#abd9e9","#74add1","#4575b4"],
9: ["#d73027","#f46d43","#fdae61","#fee090","#ffffbf","#e0f3f8","#abd9e9","#74add1","#4575b4"],
10: ["#a50026","#d73027","#f46d43","#fdae61","#fee090","#e0f3f8","#abd9e9","#74add1","#4575b4","#313695"],
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3: ["#fc8d59","#ffffbf","#99d594"],
4: ["#d7191c","#fdae61","#abdda4","#2b83ba"],
5: ["#d7191c","#fdae61","#ffffbf","#abdda4","#2b83ba"],
6: ["#d53e4f","#fc8d59","#fee08b","#e6f598","#99d594","#3288bd"],
7: ["#d53e4f","#fc8d59","#fee08b","#ffffbf","#e6f598","#99d594","#3288bd"],
8: ["#d53e4f","#f46d43","#fdae61","#fee08b","#e6f598","#abdda4","#66c2a5","#3288bd"],
9: ["#d53e4f","#f46d43","#fdae61","#fee08b","#ffffbf","#e6f598","#abdda4","#66c2a5","#3288bd"],
10: ["#9e0142","#d53e4f","#f46d43","#fdae61","#fee08b","#e6f598","#abdda4","#66c2a5","#3288bd","#5e4fa2"],
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},RdYlGn: {
3: ["#fc8d59","#ffffbf","#91cf60"],
4: ["#d7191c","#fdae61","#a6d96a","#1a9641"],
5: ["#d7191c","#fdae61","#ffffbf","#a6d96a","#1a9641"],
6: ["#d73027","#fc8d59","#fee08b","#d9ef8b","#91cf60","#1a9850"],
7: ["#d73027","#fc8d59","#fee08b","#ffffbf","#d9ef8b","#91cf60","#1a9850"],
8: ["#d73027","#f46d43","#fdae61","#fee08b","#d9ef8b","#a6d96a","#66bd63","#1a9850"],
9: ["#d73027","#f46d43","#fdae61","#fee08b","#ffffbf","#d9ef8b","#a6d96a","#66bd63","#1a9850"],
10: ["#a50026","#d73027","#f46d43","#fdae61","#fee08b","#d9ef8b","#a6d96a","#66bd63","#1a9850","#006837"],
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3: ["#7fc97f","#beaed4","#fdc086"],
4: ["#7fc97f","#beaed4","#fdc086","#ffff99"],
5: ["#7fc97f","#beaed4","#fdc086","#ffff99","#386cb0"],
6: ["#7fc97f","#beaed4","#fdc086","#ffff99","#386cb0","#f0027f"],
7: ["#7fc97f","#beaed4","#fdc086","#ffff99","#386cb0","#f0027f","#bf5b17"],
8: ["#7fc97f","#beaed4","#fdc086","#ffff99","#386cb0","#f0027f","#bf5b17","#666666"]
},Dark2: {
3: ["#1b9e77","#d95f02","#7570b3"],
4: ["#1b9e77","#d95f02","#7570b3","#e7298a"],
5: ["#1b9e77","#d95f02","#7570b3","#e7298a","#66a61e"],
6: ["#1b9e77","#d95f02","#7570b3","#e7298a","#66a61e","#e6ab02"],
7: ["#1b9e77","#d95f02","#7570b3","#e7298a","#66a61e","#e6ab02","#a6761d"],
8: ["#1b9e77","#d95f02","#7570b3","#e7298a","#66a61e","#e6ab02","#a6761d","#666666"]
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3: ["#a6cee3","#1f78b4","#b2df8a"],
4: ["#a6cee3","#1f78b4","#b2df8a","#33a02c"],
5: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99"],
6: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c"],
7: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f"],
8: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f","#ff7f00"],
9: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f","#ff7f00","#cab2d6"],
10: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f","#ff7f00","#cab2d6","#6a3d9a"],
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12: ["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f","#ff7f00","#cab2d6","#6a3d9a","#ffff99","#b15928"]
},Pastel1: {
3: ["#fbb4ae","#b3cde3","#ccebc5"],
4: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4"],
5: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4","#fed9a6"],
6: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4","#fed9a6","#ffffcc"],
7: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4","#fed9a6","#ffffcc","#e5d8bd"],
8: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4","#fed9a6","#ffffcc","#e5d8bd","#fddaec"],
9: ["#fbb4ae","#b3cde3","#ccebc5","#decbe4","#fed9a6","#ffffcc","#e5d8bd","#fddaec","#f2f2f2"]
},Pastel2: {
3: ["#b3e2cd","#fdcdac","#cbd5e8"],
4: ["#b3e2cd","#fdcdac","#cbd5e8","#f4cae4"],
5: ["#b3e2cd","#fdcdac","#cbd5e8","#f4cae4","#e6f5c9"],
6: ["#b3e2cd","#fdcdac","#cbd5e8","#f4cae4","#e6f5c9","#fff2ae"],
7: ["#b3e2cd","#fdcdac","#cbd5e8","#f4cae4","#e6f5c9","#fff2ae","#f1e2cc"],
8: ["#b3e2cd","#fdcdac","#cbd5e8","#f4cae4","#e6f5c9","#fff2ae","#f1e2cc","#cccccc"]
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3: ["#e41a1c","#377eb8","#4daf4a"],
4: ["#e41a1c","#377eb8","#4daf4a","#984ea3"],
5: ["#e41a1c","#377eb8","#4daf4a","#984ea3","#ff7f00"],
6: ["#e41a1c","#377eb8","#4daf4a","#984ea3","#ff7f00","#ffff33"],
7: ["#e41a1c","#377eb8","#4daf4a","#984ea3","#ff7f00","#ffff33","#a65628"],
8: ["#e41a1c","#377eb8","#4daf4a","#984ea3","#ff7f00","#ffff33","#a65628","#f781bf"],
9: ["#e41a1c","#377eb8","#4daf4a","#984ea3","#ff7f00","#ffff33","#a65628","#f781bf","#999999"]
},Set2: {
3: ["#66c2a5","#fc8d62","#8da0cb"],
4: ["#66c2a5","#fc8d62","#8da0cb","#e78ac3"],
5: ["#66c2a5","#fc8d62","#8da0cb","#e78ac3","#a6d854"],
6: ["#66c2a5","#fc8d62","#8da0cb","#e78ac3","#a6d854","#ffd92f"],
7: ["#66c2a5","#fc8d62","#8da0cb","#e78ac3","#a6d854","#ffd92f","#e5c494"],
8: ["#66c2a5","#fc8d62","#8da0cb","#e78ac3","#a6d854","#ffd92f","#e5c494","#b3b3b3"]
},Set3: {
3: ["#8dd3c7","#ffffb3","#bebada"],
4: ["#8dd3c7","#ffffb3","#bebada","#fb8072"],
5: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3"],
6: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462"],
7: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69"],
8: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5"],
9: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9"],
10: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9","#bc80bd"],
11: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9","#bc80bd","#ccebc5"],
12: ["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9","#bc80bd","#ccebc5","#ffed6f"]
}};

if (typeof define === "function" && define.amd) {
    define(colorbrewer);
} else if (typeof module === "object" && module.exports) {
    module.exports = colorbrewer;
} else {
    this.colorbrewer = colorbrewer;
}

}();

},{}],78:[function(require,module,exports){
module.exports = require('./colorbrewer.js');

},{"./colorbrewer.js":77}],79:[function(require,module,exports){
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    version: "3.5.17"
  };
  var d3_arraySlice = [].slice, d3_array = function(list) {
    return d3_arraySlice.call(list);
  };
  var d3_document = this.document;
  function d3_documentElement(node) {
    return node && (node.ownerDocument || node.document || node).documentElement;
  }
  function d3_window(node) {
    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
  }
  if (d3_document) {
    try {
      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
    } catch (e) {
      d3_array = function(list) {
        var i = list.length, array = new Array(i);
        while (i--) array[i] = list[i];
        return array;
      };
    }
  }
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  if (d3_document) {
    try {
      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
    } catch (error) {
      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
      d3_element_prototype.setAttribute = function(name, value) {
        d3_element_setAttribute.call(this, name, value + "");
      };
      d3_element_prototype.setAttributeNS = function(space, local, value) {
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      };
      d3_style_prototype.setProperty = function(name, value, priority) {
        d3_style_setProperty.call(this, name, value + "", priority);
      };
    }
  }
  d3.ascending = d3_ascending;
  function d3_ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  function d3_number(x) {
    return x === null ? NaN : +x;
  }
  function d3_numeric(x) {
    return !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    } else {
      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.mean = function(array, f) {
    var s = 0, n = array.length, a, i = -1, j = n;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    }
    if (j) return s / j;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.median = function(array, f) {
    var numbers = [], n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    }
    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
  };
  d3.variance = function(array, f) {
    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) {
        if (d3_numeric(a = d3_number(array[i]))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    } else {
      while (++i < n) {
        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    }
    if (j > 1) return s / (j - 1);
  };
  d3.deviation = function() {
    var v = d3.variance.apply(this, arguments);
    return v ? Math.sqrt(v) : v;
  };
  function d3_bisector(compare) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  }
  var d3_bisect = d3_bisector(d3_ascending);
  d3.bisectLeft = d3_bisect.left;
  d3.bisect = d3.bisectRight = d3_bisect.right;
  d3.bisector = function(f) {
    return d3_bisector(f.length === 1 ? function(d, x) {
      return d3_ascending(f(d), x);
    } : f);
  };
  d3.shuffle = function(array, i0, i1) {
    if ((m = arguments.length) < 3) {
      i1 = array.length;
      if (m < 2) i0 = 0;
    }
    var m = i1 - i0, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    }
    return array;
  };
  d3.permute = function(array, indexes) {
    var i = indexes.length, permutes = new Array(i);
    while (i--) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.pairs = function(array) {
    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    return pairs;
  };
  d3.transpose = function(matrix) {
    if (!(n = matrix.length)) return [];
    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
        row[j] = matrix[j][i];
      }
    }
    return transpose;
  };
  function d3_transposeLength(d) {
    return d.length;
  }
  d3.zip = function() {
    return d3.transpose(arguments);
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.merge = function(arrays) {
    var n = arrays.length, m, i = -1, j = 0, merged, array;
    while (++i < n) j += arrays[i].length;
    merged = new Array(j);
    while (--n >= 0) {
      array = arrays[n];
      m = array.length;
      while (--m >= 0) {
        merged[--j] = array[m];
      }
    }
    return merged;
  };
  var abs = Math.abs;
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  function d3_class(ctor, properties) {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  }
  d3.map = function(object, f) {
    var map = new d3_Map();
    if (object instanceof d3_Map) {
      object.forEach(function(key, value) {
        map.set(key, value);
      });
    } else if (Array.isArray(object)) {
      var i = -1, n = object.length, o;
      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    } else {
      for (var key in object) map.set(key, object[key]);
    }
    return map;
  };
  function d3_Map() {
    this._ = Object.create(null);
  }
  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
  d3_class(d3_Map, {
    has: d3_map_has,
    get: function(key) {
      return this._[d3_map_escape(key)];
    },
    set: function(key, value) {
      return this._[d3_map_escape(key)] = value;
    },
    remove: d3_map_remove,
    keys: d3_map_keys,
    values: function() {
      var values = [];
      for (var key in this._) values.push(this._[key]);
      return values;
    },
    entries: function() {
      var entries = [];
      for (var key in this._) entries.push({
        key: d3_map_unescape(key),
        value: this._[key]
      });
      return entries;
    },
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    }
  });
  function d3_map_escape(key) {
    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
  }
  function d3_map_unescape(key) {
    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
  }
  function d3_map_has(key) {
    return d3_map_escape(key) in this._;
  }
  function d3_map_remove(key) {
    return (key = d3_map_escape(key)) in this._ && delete this._[key];
  }
  function d3_map_keys() {
    var keys = [];
    for (var key in this._) keys.push(d3_map_unescape(key));
    return keys;
  }
  function d3_map_size() {
    var size = 0;
    for (var key in this._) ++size;
    return size;
  }
  function d3_map_empty() {
    for (var key in this._) return false;
    return true;
  }
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(mapType, array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      if (mapType) {
        object = mapType();
        setter = function(keyValue, values) {
          object.set(keyValue, map(mapType, values, depth));
        };
      } else {
        object = {};
        setter = function(keyValue, values) {
          object[keyValue] = map(mapType, values, depth);
        };
      }
      valuesByKey.forEach(setter);
      return object;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var array = [], sortKey = sortKeys[depth++];
      map.forEach(function(key, keyMap) {
        array.push({
          key: key,
          values: entries(keyMap, depth)
        });
      });
      return sortKey ? array.sort(function(a, b) {
        return sortKey(a.key, b.key);
      }) : array;
    }
    nest.map = function(array, mapType) {
      return map(mapType, array, 0);
    };
    nest.entries = function(array) {
      return entries(map(d3.map, array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.set = function(array) {
    var set = new d3_Set();
    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    return set;
  };
  function d3_Set() {
    this._ = Object.create(null);
  }
  d3_class(d3_Set, {
    has: d3_map_has,
    add: function(key) {
      this._[d3_map_escape(key += "")] = true;
      return key;
    },
    remove: d3_map_remove,
    values: d3_map_keys,
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key));
    }
  });
  d3.behavior = {};
  function d3_identity(d) {
    return d;
  }
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  function d3_vendorSymbol(object, name) {
    if (name in object) return name;
    name = name.charAt(0).toUpperCase() + name.slice(1);
    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
      var prefixName = d3_vendorPrefixes[i] + name;
      if (prefixName in object) return prefixName;
    }
  }
  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
  function d3_noop() {}
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i >= 0) {
      name = type.slice(i + 1);
      type = type.slice(0, i);
    }
    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    if (arguments.length === 2) {
      if (listener == null) for (type in this) {
        if (this.hasOwnProperty(type)) this[type].on(name, null);
      }
      return this;
    }
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.event = null;
  function d3_eventPreventDefault() {
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    object.__proto__ = prototype;
  } : function(object, prototype) {
    for (var property in prototype) object[property] = prototype[property];
  };
  function d3_selection(groups) {
    d3_subclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectMatches = function(n, s) {
    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
    d3_selectMatches = function(n, s) {
      return d3_selectMatcher.call(n, s);
    };
    return d3_selectMatches(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = Sizzle;
    d3_selectMatches = Sizzle.matchesSelector;
  }
  d3.selection = function() {
    return d3.select(d3_document.documentElement);
  };
  var d3_selectionPrototype = d3.selection.prototype = [];
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_selectAll(selector, this);
    };
  }
  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: d3_nsXhtml,
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.getAttribute("class");
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classes(name) {
    return (name + "").trim().split(/^|\s+/);
  }
  function d3_selection_classed(name, value) {
    name = d3_selection_classes(name).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.getAttribute("class") || "";
      if (value) {
        re.lastIndex = 0;
        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
      } else {
        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) {
        var node = this.node();
        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
      }
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3_selection_creator(name);
    return this.select(function() {
      return this.appendChild(name.apply(this, arguments));
    });
  };
  function d3_selection_creator(name) {
    function create() {
      var document = this.ownerDocument, namespace = this.namespaceURI;
      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
    }
    function createNS() {
      return this.ownerDocument.createElementNS(name.space, name.local);
    }
    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
  }
  d3_selectionPrototype.insert = function(name, before) {
    name = d3_selection_creator(name);
    before = d3_selection_selector(before);
    return this.select(function() {
      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    });
  };
  d3_selectionPrototype.remove = function() {
    return this.each(d3_selectionRemove);
  };
  function d3_selectionRemove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
        for (i = -1; ++i < n; ) {
          if (node = group[i]) {
            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
              exitNodes[i] = node;
            } else {
              nodeByKeyValue.set(keyValue, node);
            }
            keyValues[i] = keyValue;
          }
        }
        for (i = -1; ++i < m; ) {
          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          } else if (node !== true) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          }
          nodeByKeyValue.set(keyValue, true);
        }
        for (i = -1; ++i < n; ) {
          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3_ascending;
    return function(a, b) {
      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    };
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.size = function() {
    var n = 0;
    d3_selection_each(this, function() {
      ++n;
    });
    return n;
  };
  function d3_selection_enter(selection) {
    d3_subclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  d3_selection_enterPrototype.insert = function(name, before) {
    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
    return d3_selectionPrototype.insert.call(this, name, before);
  };
  function d3_selection_enterInsertBefore(enter) {
    var i0, j0;
    return function(d, i, j) {
      var group = enter[j].update, n = group.length, node;
      if (j != j0) j0 = j, i0 = 0;
      if (i >= i0) i0 = i + 1;
      while (!(node = group[i0]) && ++i0 < n) ;
      return node;
    };
  }
  d3.select = function(node) {
    var group;
    if (typeof node === "string") {
      group = [ d3_select(node, d3_document) ];
      group.parentNode = d3_document.documentElement;
    } else {
      group = [ node ];
      group.parentNode = d3_documentElement(node);
    }
    return d3_selection([ group ]);
  };
  d3.selectAll = function(nodes) {
    var group;
    if (typeof nodes === "string") {
      group = d3_array(d3_selectAll(nodes, d3_document));
      group.parentNode = d3_document.documentElement;
    } else {
      group = d3_array(nodes);
      group.parentNode = null;
    }
    return d3_selection([ group ]);
  };
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
    if (i > 0) type = type.slice(0, i);
    var filter = d3_selection_onFilters.get(type);
    if (filter) type = filter, wrap = d3_selection_onFilter;
    function onRemove() {
      var l = this[name];
      if (l) {
        this.removeEventListener(type, l, l.$);
        delete this[name];
      }
    }
    function onAdd() {
      var l = wrap(listener, d3_array(arguments));
      onRemove.call(this);
      this.addEventListener(type, this[name] = l, l.$ = capture);
      l._ = listener;
    }
    function removeAll() {
      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
      for (var name in this) {
        if (match = name.match(re)) {
          var l = this[name];
          this.removeEventListener(match[1], l, l.$);
          delete this[name];
        }
      }
    }
    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
  }
  var d3_selection_onFilters = d3.map({
    mouseenter: "mouseover",
    mouseleave: "mouseout"
  });
  if (d3_document) {
    d3_selection_onFilters.forEach(function(k) {
      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
    });
  }
  function d3_selection_onListener(listener, argumentz) {
    return function(e) {
      var o = d3.event;
      d3.event = e;
      argumentz[0] = this.__data__;
      try {
        listener.apply(this, argumentz);
      } finally {
        d3.event = o;
      }
    };
  }
  function d3_selection_onFilter(listener, argumentz) {
    var l = d3_selection_onListener(listener, argumentz);
    return function(e) {
      var target = this, related = e.relatedTarget;
      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
        l.call(target, e);
      }
    };
  }
  var d3_event_dragSelect, d3_event_dragId = 0;
  function d3_event_dragSuppress(node) {
    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
    if (d3_event_dragSelect == null) {
      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
    }
    if (d3_event_dragSelect) {
      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
      style[d3_event_dragSelect] = "none";
    }
    return function(suppressClick) {
      w.on(name, null);
      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
      if (suppressClick) {
        var off = function() {
          w.on(click, null);
        };
        w.on(click, function() {
          d3_eventPreventDefault();
          off();
        }, true);
        setTimeout(off, 0);
      }
    };
  }
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    if (e.changedTouches) e = e.changedTouches[0];
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0) {
        var window = d3_window(container);
        if (window.scrollX || window.scrollY) {
          svg = d3.select("body").append("svg").style({
            position: "absolute",
            top: 0,
            left: 0,
            margin: 0,
            padding: 0,
            border: "none"
          }, "important");
          var ctm = svg[0][0].getScreenCTM();
          d3_mouse_bug44083 = !(ctm.f || ctm.e);
          svg.remove();
        }
      }
      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
      point.y = e.clientY;
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touch = function(container, touches, identifier) {
    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
      if ((touch = touches[i]).identifier === identifier) {
        return d3_mousePoint(container, touch);
      }
    }
  };
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
    }
    function dragstart(id, position, subject, move, end) {
      return function() {
        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
        if (origin) {
          dragOffset = origin.apply(that, arguments);
          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
        } else {
          dragOffset = [ 0, 0 ];
        }
        dispatch({
          type: "dragstart"
        });
        function moved() {
          var position1 = position(parent, dragId), dx, dy;
          if (!position1) return;
          dx = position1[0] - position0[0];
          dy = position1[1] - position0[1];
          dragged |= dx | dy;
          position0 = position1;
          dispatch({
            type: "drag",
            x: position1[0] + dragOffset[0],
            y: position1[1] + dragOffset[1],
            dx: dx,
            dy: dy
          });
        }
        function ended() {
          if (!position(parent, dragId)) return;
          dragSubject.on(move + dragName, null).on(end + dragName, null);
          dragRestore(dragged);
          dispatch({
            type: "dragend"
          });
        }
      };
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  function d3_behavior_dragTouchId() {
    return d3.event.changedTouches[0].identifier;
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  function d3_sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function d3_cross2d(a, b, c) {
    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
  }
  function d3_acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function d3_asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function d3_sinh(x) {
    return ((x = Math.exp(x)) - 1 / x) / 2;
  }
  function d3_cosh(x) {
    return ((x = Math.exp(x)) + 1 / x) / 2;
  }
  function d3_tanh(x) {
    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
  }
  function d3_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
  d3.interpolateZoom = function(p0, p1) {
    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
    if (d2 < ε2) {
      S = Math.log(w1 / w0) / ρ;
      i = function(t) {
        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
      };
    } else {
      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
      S = (r1 - r0) / ρ;
      i = function(t) {
        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
      };
    }
    i.duration = S * 1e3;
    return i;
  };
  d3.behavior.zoom = function() {
    var view = {
      x: 0,
      y: 0,
      k: 1
    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
    if (!d3_behavior_zoomWheel) {
      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return d3.event.wheelDelta;
      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
        return -d3.event.detail;
      }, "MozMousePixelScroll");
    }
    function zoom(g) {
      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
    }
    zoom.event = function(g) {
      g.each(function() {
        var dispatch = event.of(this, arguments), view1 = view;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.zoom", function() {
            view = this.__chart__ || {
              x: 0,
              y: 0,
              k: 1
            };
            zoomstarted(dispatch);
          }).tween("zoom:zoom", function() {
            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
            return function(t) {
              var l = i(t), k = dx / l[2];
              this.__chart__ = view = {
                x: cx - l[0] * k,
                y: cy - l[1] * k,
                k: k
              };
              zoomed(dispatch);
            };
          }).each("interrupt.zoom", function() {
            zoomended(dispatch);
          }).each("end.zoom", function() {
            zoomended(dispatch);
          });
        } else {
          this.__chart__ = view;
          zoomstarted(dispatch);
          zoomed(dispatch);
          zoomended(dispatch);
        }
      });
    };
    zoom.translate = function(_) {
      if (!arguments.length) return [ view.x, view.y ];
      view = {
        x: +_[0],
        y: +_[1],
        k: view.k
      };
      rescale();
      return zoom;
    };
    zoom.scale = function(_) {
      if (!arguments.length) return view.k;
      view = {
        x: view.x,
        y: view.y,
        k: null
      };
      scaleTo(+_);
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(_) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.center = function(_) {
      if (!arguments.length) return center;
      center = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.size = function(_) {
      if (!arguments.length) return size;
      size = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.duration = function(_) {
      if (!arguments.length) return duration;
      duration = +_;
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    function location(p) {
      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
    }
    function point(l) {
      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
    }
    function scaleTo(s) {
      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      view.x += p[0] - l[0];
      view.y += p[1] - l[1];
    }
    function zoomTo(that, p, l, k) {
      that.__chart__ = {
        x: view.x,
        y: view.y,
        k: view.k
      };
      scaleTo(Math.pow(2, k));
      translateTo(center0 = p, l);
      that = d3.select(that);
      if (duration > 0) that = that.transition().duration(duration);
      that.call(zoom.event);
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - view.x) / view.k;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - view.y) / view.k;
      }).map(y0.invert));
    }
    function zoomstarted(dispatch) {
      if (!zooming++) dispatch({
        type: "zoomstart"
      });
    }
    function zoomed(dispatch) {
      rescale();
      dispatch({
        type: "zoom",
        scale: view.k,
        translate: [ view.x, view.y ]
      });
    }
    function zoomended(dispatch) {
      if (!--zooming) dispatch({
        type: "zoomend"
      }), center0 = null;
    }
    function mousedowned() {
      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
      d3_selection_interrupt.call(that);
      zoomstarted(dispatch);
      function moved() {
        dragged = 1;
        translateTo(d3.mouse(that), location0);
        zoomed(dispatch);
      }
      function ended() {
        subject.on(mousemove, null).on(mouseup, null);
        dragRestore(dragged);
        zoomended(dispatch);
      }
    }
    function touchstarted() {
      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
      started();
      zoomstarted(dispatch);
      subject.on(mousedown, null).on(touchstart, started);
      function relocate() {
        var touches = d3.touches(that);
        scale0 = view.k;
        touches.forEach(function(t) {
          if (t.identifier in locations0) locations0[t.identifier] = location(t);
        });
        return touches;
      }
      function started() {
        var target = d3.event.target;
        d3.select(target).on(touchmove, moved).on(touchend, ended);
        targets.push(target);
        var changed = d3.event.changedTouches;
        for (var i = 0, n = changed.length; i < n; ++i) {
          locations0[changed[i].identifier] = null;
        }
        var touches = relocate(), now = Date.now();
        if (touches.length === 1) {
          if (now - touchtime < 500) {
            var p = touches[0];
            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
            d3_eventPreventDefault();
          }
          touchtime = now;
        } else if (touches.length > 1) {
          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
          distance0 = dx * dx + dy * dy;
        }
      }
      function moved() {
        var touches = d3.touches(that), p0, l0, p1, l1;
        d3_selection_interrupt.call(that);
        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
          p1 = touches[i];
          if (l1 = locations0[p1.identifier]) {
            if (l0) break;
            p0 = p1, l0 = l1;
          }
        }
        if (l1) {
          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
          scaleTo(scale1 * scale0);
        }
        touchtime = null;
        translateTo(p0, l0);
        zoomed(dispatch);
      }
      function ended() {
        if (d3.event.touches.length) {
          var changed = d3.event.changedTouches;
          for (var i = 0, n = changed.length; i < n; ++i) {
            delete locations0[changed[i].identifier];
          }
          for (var identifier in locations0) {
            return void relocate();
          }
        }
        d3.selectAll(targets).on(zoomName, null);
        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
        dragRestore();
        zoomended(dispatch);
      }
    }
    function mousewheeled() {
      var dispatch = event.of(this, arguments);
      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
      mousewheelTimer = setTimeout(function() {
        mousewheelTimer = null;
        zoomended(dispatch);
      }, 50);
      d3_eventPreventDefault();
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
      translateTo(center0, translate0);
      zoomed(dispatch);
    }
    function dblclicked() {
      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
  d3.color = d3_color;
  function d3_color() {}
  d3_color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.hsl = d3_hsl;
  function d3_hsl(h, s, l) {
    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
  }
  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = d3_hcl;
  function d3_hcl(h, c, l) {
    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
  }
  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
  d3_hclPrototype.brighter = function(k) {
    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    if (isNaN(h)) h = 0;
    if (isNaN(c)) c = 0;
    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = d3_lab;
  function d3_lab(l, a, b) {
    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_lab.prototype = new d3_color();
  d3_labPrototype.brighter = function(k) {
    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  d3.rgb = d3_rgb;
  function d3_rgb(r, g, b) {
    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
  }
  function d3_rgbNumber(value) {
    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
  }
  function d3_rgbString(value) {
    return d3_rgbNumber(value) + "";
  }
  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return new d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_rgb(k * this.r, k * this.g, k * this.b);
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, color;
    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (color = d3_rgb_names.get(format)) {
      return rgb(color.r, color.g, color.b);
    }
    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
      if (format.length === 4) {
        r = (color & 3840) >> 4;
        r = r >> 4 | r;
        g = color & 240;
        g = g >> 4 | g;
        b = color & 15;
        b = b << 4 | b;
      } else if (format.length === 7) {
        r = (color & 16711680) >> 16;
        g = (color & 65280) >> 8;
        b = color & 255;
      }
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      h = NaN;
      s = l > 0 && l < 1 ? 0 : h;
    }
    return new d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: 15792383,
    antiquewhite: 16444375,
    aqua: 65535,
    aquamarine: 8388564,
    azure: 15794175,
    beige: 16119260,
    bisque: 16770244,
    black: 0,
    blanchedalmond: 16772045,
    blue: 255,
    blueviolet: 9055202,
    brown: 10824234,
    burlywood: 14596231,
    cadetblue: 6266528,
    chartreuse: 8388352,
    chocolate: 13789470,
    coral: 16744272,
    cornflowerblue: 6591981,
    cornsilk: 16775388,
    crimson: 14423100,
    cyan: 65535,
    darkblue: 139,
    darkcyan: 35723,
    darkgoldenrod: 12092939,
    darkgray: 11119017,
    darkgreen: 25600,
    darkgrey: 11119017,
    darkkhaki: 12433259,
    darkmagenta: 9109643,
    darkolivegreen: 5597999,
    darkorange: 16747520,
    darkorchid: 10040012,
    darkred: 9109504,
    darksalmon: 15308410,
    darkseagreen: 9419919,
    darkslateblue: 4734347,
    darkslategray: 3100495,
    darkslategrey: 3100495,
    darkturquoise: 52945,
    darkviolet: 9699539,
    deeppink: 16716947,
    deepskyblue: 49151,
    dimgray: 6908265,
    dimgrey: 6908265,
    dodgerblue: 2003199,
    firebrick: 11674146,
    floralwhite: 16775920,
    forestgreen: 2263842,
    fuchsia: 16711935,
    gainsboro: 14474460,
    ghostwhite: 16316671,
    gold: 16766720,
    goldenrod: 14329120,
    gray: 8421504,
    green: 32768,
    greenyellow: 11403055,
    grey: 8421504,
    honeydew: 15794160,
    hotpink: 16738740,
    indianred: 13458524,
    indigo: 4915330,
    ivory: 16777200,
    khaki: 15787660,
    lavender: 15132410,
    lavenderblush: 16773365,
    lawngreen: 8190976,
    lemonchiffon: 16775885,
    lightblue: 11393254,
    lightcoral: 15761536,
    lightcyan: 14745599,
    lightgoldenrodyellow: 16448210,
    lightgray: 13882323,
    lightgreen: 9498256,
    lightgrey: 13882323,
    lightpink: 16758465,
    lightsalmon: 16752762,
    lightseagreen: 2142890,
    lightskyblue: 8900346,
    lightslategray: 7833753,
    lightslategrey: 7833753,
    lightsteelblue: 11584734,
    lightyellow: 16777184,
    lime: 65280,
    limegreen: 3329330,
    linen: 16445670,
    magenta: 16711935,
    maroon: 8388608,
    mediumaquamarine: 6737322,
    mediumblue: 205,
    mediumorchid: 12211667,
    mediumpurple: 9662683,
    mediumseagreen: 3978097,
    mediumslateblue: 8087790,
    mediumspringgreen: 64154,
    mediumturquoise: 4772300,
    mediumvioletred: 13047173,
    midnightblue: 1644912,
    mintcream: 16121850,
    mistyrose: 16770273,
    moccasin: 16770229,
    navajowhite: 16768685,
    navy: 128,
    oldlace: 16643558,
    olive: 8421376,
    olivedrab: 7048739,
    orange: 16753920,
    orangered: 16729344,
    orchid: 14315734,
    palegoldenrod: 15657130,
    palegreen: 10025880,
    paleturquoise: 11529966,
    palevioletred: 14381203,
    papayawhip: 16773077,
    peachpuff: 16767673,
    peru: 13468991,
    pink: 16761035,
    plum: 14524637,
    powderblue: 11591910,
    purple: 8388736,
    rebeccapurple: 6697881,
    red: 16711680,
    rosybrown: 12357519,
    royalblue: 4286945,
    saddlebrown: 9127187,
    salmon: 16416882,
    sandybrown: 16032864,
    seagreen: 3050327,
    seashell: 16774638,
    sienna: 10506797,
    silver: 12632256,
    skyblue: 8900331,
    slateblue: 6970061,
    slategray: 7372944,
    slategrey: 7372944,
    snow: 16775930,
    springgreen: 65407,
    steelblue: 4620980,
    tan: 13808780,
    teal: 32896,
    thistle: 14204888,
    tomato: 16737095,
    turquoise: 4251856,
    violet: 15631086,
    wheat: 16113331,
    white: 16777215,
    whitesmoke: 16119285,
    yellow: 16776960,
    yellowgreen: 10145074
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgbNumber(value));
  });
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.xhr = d3_xhrType(d3_identity);
  function d3_xhrType(response) {
    return function(url, mimeType, callback) {
      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
      mimeType = null;
      return d3_xhr(url, mimeType, response, callback);
    };
  }
  function d3_xhr(url, mimeType, response, callback) {
    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var status = request.status, result;
      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
        try {
          result = response.call(xhr, request);
        } catch (e) {
          dispatch.error.call(xhr, e);
          return;
        }
        dispatch.load.call(xhr, result);
      } else {
        dispatch.error.call(xhr, request);
      }
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.responseType = function(value) {
      if (!arguments.length) return responseType;
      responseType = value;
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (responseType != null) request.responseType = responseType;
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      dispatch.beforesend.call(xhr, request);
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  }
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  function d3_xhrHasResponse(request) {
    var type = request.responseType;
    return type && type !== "text" ? request.response : request.responseText;
  }
  d3.dsv = function(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, row, callback) {
      if (arguments.length < 3) callback = row, row = null;
      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
      xhr.row = function(_) {
        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
      };
      return xhr;
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    function typedResponse(f) {
      return function(request) {
        return dsv.parse(request.responseText, f);
      };
    }
    dsv.parse = function(text, f) {
      var o;
      return dsv.parseRows(text, function(row, i) {
        if (o) return o(row, i - 1);
        var a = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
        o = f ? function(row, i) {
          return f(a(row), i);
        } : a;
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.slice(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.slice(j, I - k);
        }
        return text.slice(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && (a = f(a, n++)) == null) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
      var fieldSet = new d3_Set(), fields = [];
      rows.forEach(function(row) {
        for (var field in row) {
          if (!fieldSet.has(field)) {
            fields.push(fieldSet.add(field));
          }
        }
      });
      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
        return fields.map(function(field) {
          return formatValue(row[field]);
        }).join(delimiter);
      })).join("\n");
    };
    dsv.formatRows = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  };
  d3.csv = d3.dsv(",", "text/csv");
  d3.tsv = d3.dsv("	", "text/tab-separated-values");
  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
    setTimeout(callback, 17);
  };
  d3.timer = function() {
    d3_timer.apply(this, arguments);
  };
  function d3_timer(callback, delay, then) {
    var n = arguments.length;
    if (n < 2) delay = 0;
    if (n < 3) then = Date.now();
    var time = then + delay, timer = {
      c: callback,
      t: time,
      n: null
    };
    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
    d3_timer_queueTail = timer;
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
    return timer;
  }
  function d3_timer_step() {
    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    d3_timer_mark();
    d3_timer_sweep();
  };
  function d3_timer_mark() {
    var now = Date.now(), timer = d3_timer_queueHead;
    while (timer) {
      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
      timer = timer.n;
    }
    return now;
  }
  function d3_timer_sweep() {
    var t0, t1 = d3_timer_queueHead, time = Infinity;
    while (t1) {
      if (t1.c) {
        if (t1.t < time) time = t1.t;
        t1 = (t0 = t1).n;
      } else {
        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
      }
    }
    d3_timer_queueTail = t0;
    return time;
  }
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value = +value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  function d3_locale_numberFormat(locale) {
    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
      while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = locale_grouping[j = (j + 1) % locale_grouping.length];
      }
      return t.reverse().join(locale_thousands);
    } : d3_identity;
    return function(specifier) {
      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
      if (precision) precision = +precision.substring(1);
      if (zfill || fill === "0" && align === "=") {
        zfill = fill = "0";
        align = "=";
      }
      switch (type) {
       case "n":
        comma = true;
        type = "g";
        break;

       case "%":
        scale = 100;
        suffix = "%";
        type = "f";
        break;

       case "p":
        scale = 100;
        suffix = "%";
        type = "r";
        break;

       case "b":
       case "o":
       case "x":
       case "X":
        if (symbol === "#") prefix = "0" + type.toLowerCase();

       case "c":
        exponent = false;

       case "d":
        integer = true;
        precision = 0;
        break;

       case "s":
        scale = -1;
        type = "r";
        break;
      }
      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
      if (type == "r" && !precision) type = "g";
      if (precision != null) {
        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
      }
      type = d3_format_types.get(type) || d3_format_typeDefault;
      var zcomma = zfill && comma;
      return function(value) {
        var fullSuffix = suffix;
        if (integer && value % 1) return "";
        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
        if (scale < 0) {
          var unit = d3.formatPrefix(value, precision);
          value = unit.scale(value);
          fullSuffix = unit.symbol + suffix;
        } else {
          value *= scale;
        }
        value = type(value, precision);
        var i = value.lastIndexOf("."), before, after;
        if (i < 0) {
          var j = exponent ? value.lastIndexOf("e") : -1;
          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
        } else {
          before = value.substring(0, i);
          after = locale_decimal + value.substring(i + 1);
        }
        if (!zfill && comma) before = formatGroup(before, Infinity);
        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
        negative += prefix;
        value = before + after;
        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
      };
    };
  }
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_time = d3.time = {}, d3_date = Date;
  function d3_date_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_date_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_date(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_date(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_date = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_date = Date;
      }
    };
  }
  d3_time.year = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3_time.years = d3_time.year.range;
  d3_time.years.utc = d3_time.year.utc.range;
  d3_time.day = d3_time_interval(function(date) {
    var day = new d3_date(2e3, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3_time.days = d3_time.day.range;
  d3_time.days.utc = d3_time.day.utc.range;
  d3_time.dayOfYear = function(date) {
    var year = d3_time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
    i = 7 - i;
    var interval = d3_time[day] = d3_time_interval(function(date) {
      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3_time[day + "s"] = interval.range;
    d3_time[day + "s"].utc = interval.utc.range;
    d3_time[day + "OfYear"] = function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3_time.week = d3_time.sunday;
  d3_time.weeks = d3_time.sunday.range;
  d3_time.weeks.utc = d3_time.sunday.utc.range;
  d3_time.weekOfYear = d3_time.sundayOfYear;
  function d3_locale_timeFormat(locale) {
    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
    function d3_time_format(template) {
      var n = template.length;
      function format(date) {
        var string = [], i = -1, j = 0, c, p, f;
        while (++i < n) {
          if (template.charCodeAt(i) === 37) {
            string.push(template.slice(j, i));
            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
            string.push(c);
            j = i + 1;
          }
        }
        string.push(template.slice(j, i));
        return string.join("");
      }
      format.parse = function(string) {
        var d = {
          y: 1900,
          m: 0,
          d: 1,
          H: 0,
          M: 0,
          S: 0,
          L: 0,
          Z: null
        }, i = d3_time_parse(d, template, string, 0);
        if (i != string.length) return null;
        if ("p" in d) d.H = d.H % 12 + d.p * 12;
        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
          date.setFullYear(d.y, 0, 1);
          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
        } else date.setFullYear(d.y, d.m, d.d);
        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
        return localZ ? date._ : date;
      };
      format.toString = function() {
        return template;
      };
      return format;
    }
    function d3_time_parse(date, template, string, j) {
      var c, p, t, i = 0, n = template.length, m = string.length;
      while (i < n) {
        if (j >= m) return -1;
        c = template.charCodeAt(i++);
        if (c === 37) {
          t = template.charAt(i++);
          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
          if (!p || (j = p(date, string, j)) < 0) return -1;
        } else if (c != string.charCodeAt(j++)) {
          return -1;
        }
      }
      return j;
    }
    d3_time_format.utc = function(template) {
      var local = d3_time_format(template);
      function format(date) {
        try {
          d3_date = d3_date_utc;
          var utc = new d3_date();
          utc._ = date;
          return local(utc);
        } finally {
          d3_date = Date;
        }
      }
      format.parse = function(string) {
        try {
          d3_date = d3_date_utc;
          var date = local.parse(string);
          return date && date._;
        } finally {
          d3_date = Date;
        }
      };
      format.toString = local.toString;
      return format;
    };
    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
    locale_periods.forEach(function(p, i) {
      d3_time_periodLookup.set(p.toLowerCase(), i);
    });
    var d3_time_formats = {
      a: function(d) {
        return locale_shortDays[d.getDay()];
      },
      A: function(d) {
        return locale_days[d.getDay()];
      },
      b: function(d) {
        return locale_shortMonths[d.getMonth()];
      },
      B: function(d) {
        return locale_months[d.getMonth()];
      },
      c: d3_time_format(locale_dateTime),
      d: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      e: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      H: function(d, p) {
        return d3_time_formatPad(d.getHours(), p, 2);
      },
      I: function(d, p) {
        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
      },
      j: function(d, p) {
        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
      },
      L: function(d, p) {
        return d3_time_formatPad(d.getMilliseconds(), p, 3);
      },
      m: function(d, p) {
        return d3_time_formatPad(d.getMonth() + 1, p, 2);
      },
      M: function(d, p) {
        return d3_time_formatPad(d.getMinutes(), p, 2);
      },
      p: function(d) {
        return locale_periods[+(d.getHours() >= 12)];
      },
      S: function(d, p) {
        return d3_time_formatPad(d.getSeconds(), p, 2);
      },
      U: function(d, p) {
        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
      },
      w: function(d) {
        return d.getDay();
      },
      W: function(d, p) {
        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
      },
      x: d3_time_format(locale_date),
      X: d3_time_format(locale_time),
      y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
      },
      Y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
      },
      Z: d3_time_zone,
      "%": function() {
        return "%";
      }
    };
    var d3_time_parsers = {
      a: d3_time_parseWeekdayAbbrev,
      A: d3_time_parseWeekday,
      b: d3_time_parseMonthAbbrev,
      B: d3_time_parseMonth,
      c: d3_time_parseLocaleFull,
      d: d3_time_parseDay,
      e: d3_time_parseDay,
      H: d3_time_parseHour24,
      I: d3_time_parseHour24,
      j: d3_time_parseDayOfYear,
      L: d3_time_parseMilliseconds,
      m: d3_time_parseMonthNumber,
      M: d3_time_parseMinutes,
      p: d3_time_parseAmPm,
      S: d3_time_parseSeconds,
      U: d3_time_parseWeekNumberSunday,
      w: d3_time_parseWeekdayNumber,
      W: d3_time_parseWeekNumberMonday,
      x: d3_time_parseLocaleDate,
      X: d3_time_parseLocaleTime,
      y: d3_time_parseYear,
      Y: d3_time_parseFullYear,
      Z: d3_time_parseZone,
      "%": d3_time_parseLiteralPercent
    };
    function d3_time_parseWeekdayAbbrev(date, string, i) {
      d3_time_dayAbbrevRe.lastIndex = 0;
      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseWeekday(date, string, i) {
      d3_time_dayRe.lastIndex = 0;
      var n = d3_time_dayRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonthAbbrev(date, string, i) {
      d3_time_monthAbbrevRe.lastIndex = 0;
      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonth(date, string, i) {
      d3_time_monthRe.lastIndex = 0;
      var n = d3_time_monthRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseLocaleFull(date, string, i) {
      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
    }
    function d3_time_parseLocaleDate(date, string, i) {
      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
    }
    function d3_time_parseLocaleTime(date, string, i) {
      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
    }
    function d3_time_parseAmPm(date, string, i) {
      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
      return n == null ? -1 : (date.p = n, i);
    }
    return d3_time_format;
  }
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  function d3_time_formatPad(value, fill, width) {
    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_parseWeekdayNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
    return n ? (date.w = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberSunday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.U = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberMonday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.W = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
    return n ? (date.y = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
  }
  function d3_time_parseZone(date, string, i) {
    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
    i + 5) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.d = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseDayOfYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.j = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.H = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.M = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.S = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.L = +n[0], i + n[0].length) : -1;
  }
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  function d3_time_parseLiteralPercent(date, string, i) {
    d3_time_percentRe.lastIndex = 0;
    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
    return n ? i + n[0].length : -1;
  }
  function d3_time_formatMulti(formats) {
    var n = formats.length, i = -1;
    while (++i < n) formats[i][0] = this(formats[i][0]);
    return function(date) {
      var i = 0, f = formats[i];
      while (!f[1](date)) f = formats[++i];
      return f[0](date);
    };
  }
  d3.locale = function(locale) {
    return {
      numberFormat: d3_locale_numberFormat(locale),
      timeFormat: d3_locale_timeFormat(locale)
    };
  };
  var d3_locale_enUS = d3.locale({
    decimal: ".",
    thousands: ",",
    grouping: [ 3 ],
    currency: [ "$", "" ],
    dateTime: "%a %b %e %X %Y",
    date: "%m/%d/%Y",
    time: "%H:%M:%S",
    periods: [ "AM", "PM" ],
    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
  });
  d3.format = d3_locale_enUS.numberFormat;
  d3.geo = {};
  function d3_adder() {}
  d3_adder.prototype = {
    s: 0,
    t: 0,
    add: function(y) {
      d3_adderSum(y, this.t, d3_adderTemp);
      d3_adderSum(d3_adderTemp.s, this.s, this);
      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
    },
    reset: function() {
      this.s = this.t = 0;
    },
    valueOf: function() {
      return this.s;
    }
  };
  var d3_adderTemp = new d3_adder();
  function d3_adderSum(a, b, o) {
    var x = o.s = a + b, bv = x - a, av = x - bv;
    o.t = a - av + (b - bv);
  }
  d3.geo.stream = function(object, listener) {
    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      object = object.coordinates;
      listener.point(object[0], object[1], object[2]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingSum.reset();
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * d3_geo_areaRingSum;
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
      d3_geo_areaRingSum.add(Math.atan2(v, u));
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
  }
  d3.geo.bounds = function() {
    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
    var bound = {
      point: point,
      lineStart: lineStart,
      lineEnd: lineEnd,
      polygonStart: function() {
        bound.point = ringPoint;
        bound.lineStart = ringStart;
        bound.lineEnd = ringEnd;
        dλSum = 0;
        d3_geo_area.polygonStart();
      },
      polygonEnd: function() {
        d3_geo_area.polygonEnd();
        bound.point = point;
        bound.lineStart = lineStart;
        bound.lineEnd = lineEnd;
        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
        range[0] = λ0, range[1] = λ1;
      }
    };
    function point(λ, φ) {
      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
      if (φ < φ0) φ0 = φ;
      if (φ > φ1) φ1 = φ;
    }
    function linePoint(λ, φ) {
      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
      if (p0) {
        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
        d3_geo_cartesianNormalize(inflection);
        inflection = d3_geo_spherical(inflection);
        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = inflection[1] * d3_degrees;
          if (φi > φ1) φ1 = φi;
        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = -inflection[1] * d3_degrees;
          if (φi < φ0) φ0 = φi;
        } else {
          if (φ < φ0) φ0 = φ;
          if (φ > φ1) φ1 = φ;
        }
        if (antimeridian) {
          if (λ < λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        } else {
          if (λ1 >= λ0) {
            if (λ < λ0) λ0 = λ;
            if (λ > λ1) λ1 = λ;
          } else {
            if (λ > λ_) {
              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
            } else {
              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
            }
          }
        }
      } else {
        point(λ, φ);
      }
      p0 = p, λ_ = λ;
    }
    function lineStart() {
      bound.point = linePoint;
    }
    function lineEnd() {
      range[0] = λ0, range[1] = λ1;
      bound.point = point;
      p0 = null;
    }
    function ringPoint(λ, φ) {
      if (p0) {
        var dλ = λ - λ_;
        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
      } else λ__ = λ, φ__ = φ;
      d3_geo_area.point(λ, φ);
      linePoint(λ, φ);
    }
    function ringStart() {
      d3_geo_area.lineStart();
    }
    function ringEnd() {
      ringPoint(λ__, φ__);
      d3_geo_area.lineEnd();
      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
      range[0] = λ0, range[1] = λ1;
      p0 = null;
    }
    function angle(λ0, λ1) {
      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
    }
    function compareRanges(a, b) {
      return a[0] - b[0];
    }
    function withinRange(x, range) {
      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
    }
    return function(feature) {
      φ1 = λ1 = -(λ0 = φ0 = Infinity);
      ranges = [];
      d3.geo.stream(feature, bound);
      var n = ranges.length;
      if (n) {
        ranges.sort(compareRanges);
        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
          b = ranges[i];
          if (withinRange(b[0], a) || withinRange(b[1], a)) {
            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
          } else {
            merged.push(a = b);
          }
        }
        var best = -Infinity, dλ;
        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
          b = merged[i];
          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
        }
      }
      ranges = range = null;
      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
    };
  }();
  d3.geo.centroid = function(object) {
    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
    if (m < ε2) {
      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
      m = x * x + y * y + z * z;
      if (m < ε2) return [ NaN, NaN ];
    }
    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
  };
  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
  var d3_geo_centroid = {
    sphere: d3_noop,
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
  }
  function d3_geo_centroidPointXYZ(x, y, z) {
    ++d3_geo_centroidW0;
    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00, x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ00 = λ, φ00 = φ;
      d3_geo_centroid.point = nextPoint;
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    d3_geo_centroid.lineEnd = function() {
      nextPoint(λ00, φ00);
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
      d3_geo_centroid.point = d3_geo_centroidPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
      d3_geo_centroidX2 += v * cx;
      d3_geo_centroidY2 += v * cy;
      d3_geo_centroidZ2 += v * cz;
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_true() {
    return true;
  }
  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length - 1) <= 0) return;
      var n, p0 = segment[0], p1 = segment[n];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
      a.o = b;
      subject.push(a);
      clip.push(b);
      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
      a.o = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(compare);
    d3_geo_clipPolygonLinkCircular(subject);
    d3_geo_clipPolygonLinkCircular(clip);
    if (!subject.length) return;
    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
      clip[i].e = entry = !entry;
    }
    var start = subject[0], points, point;
    while (1) {
      var current = start, isSubject = true;
      while (current.v) if ((current = current.n) === start) return;
      points = current.z;
      listener.lineStart();
      do {
        current.v = current.o.v = true;
        if (current.e) {
          if (isSubject) {
            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.n.x, 1, listener);
          }
          current = current.n;
        } else {
          if (isSubject) {
            points = current.p.z;
            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.p.x, -1, listener);
          }
          current = current.p;
        }
        current = current.o;
        points = current.z;
        isSubject = !isSubject;
      } while (!current.v);
      listener.lineEnd();
    }
  }
  function d3_geo_clipPolygonLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.n = b = array[i];
      b.p = a;
      a = b;
    }
    a.n = b = array[0];
    b.p = a;
  }
  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
    this.x = point;
    this.z = points;
    this.o = other;
    this.e = entry;
    this.v = false;
    this.n = this.p = null;
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
    return function(rotate, listener) {
      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          segments = [];
          polygon = [];
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
          if (segments.length) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
          } else if (clipStartInside) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
          segments = polygon = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        var point = rotate(λ, φ);
        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        var point = rotate(λ, φ);
        line.point(point[0], point[1]);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
      function pointRing(λ, φ) {
        ring.push([ λ, φ ]);
        var point = rotate(λ, φ);
        ringListener.point(point[0], point[1]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        ring.pop();
        polygon.push(ring);
        ring = null;
        if (!n) return;
        if (clean & 1) {
          segment = ringSegments[0];
          var n = segment.length - 1, i = -1, point;
          if (n > 0) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            while (++i < n) listener.point((point = segment[i])[0], point[1]);
            listener.lineEnd();
          }
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      },
      rejoin: function() {
        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
      }
    };
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
        if (abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * halfπ;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (abs(from[0] - to[0]) > ε) {
      var s = from[0] < to[0] ? π : -π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_pointInPolygon(point, polygon) {
    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
    d3_geo_areaRingSum.reset();
    for (var i = 0, n = polygon.length; i < n; ++i) {
      var ring = polygon[i], m = ring.length;
      if (!m) continue;
      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
      while (true) {
        if (j === m) j = 0;
        point = ring[j];
        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
          d3_geo_cartesianNormalize(arc);
          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
          d3_geo_cartesianNormalize(intersection);
          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
          }
        }
        if (!j++) break;
        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
      }
    }
    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
  }
  function d3_geo_clipCircle(radius) {
    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, c0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          } else if (notHemisphere && point0 && smallRadius ^ v) {
            var t;
            if (!(c & c0) && (t = intersect(point1, point0, true))) {
              clean = 0;
              if (smallRadius) {
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
              } else {
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
              }
            }
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
            listener.point(point1[0], point1[1]);
          }
          point0 = point1, v0 = v, c0 = c;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b, two) {
      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return !two && a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
      if (t2 < 0) return;
      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      q = d3_geo_spherical(q);
      if (!two) return q;
      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
        d3_geo_cartesianAdd(q1, A);
        return [ q, d3_geo_spherical(q1) ];
      }
    }
    function code(λ, φ) {
      var r = smallRadius ? radius : π - radius, code = 0;
      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
      return code;
    }
  }
  function d3_geom_clipLine(x0, y0, x1, y1) {
    return function(line) {
      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
      r = x0 - ax;
      if (!dx && r > 0) return;
      r /= dx;
      if (dx < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dx > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = x1 - ax;
      if (!dx && r < 0) return;
      r /= dx;
      if (dx < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dx > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      r = y0 - ay;
      if (!dy && r > 0) return;
      r /= dy;
      if (dy < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dy > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = y1 - ay;
      if (!dy && r < 0) return;
      r /= dy;
      if (dy < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dy > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      if (t0 > 0) line.a = {
        x: ax + t0 * dx,
        y: ay + t0 * dy
      };
      if (t1 < 1) line.b = {
        x: ax + t1 * dx,
        y: ay + t1 * dy
      };
      return line;
    };
  }
  var d3_geo_clipExtentMAX = 1e9;
  d3.geo.clipExtent = function() {
    var x0, y0, x1, y1, stream, clip, clipExtent = {
      stream: function(output) {
        if (stream) stream.valid = false;
        stream = clip(output);
        stream.valid = true;
        return stream;
      },
      extent: function(_) {
        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
        if (stream) stream.valid = false, stream = null;
        return clipExtent;
      }
    };
    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
  };
  function d3_geo_clipExtent(x0, y0, x1, y1) {
    return function(listener) {
      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          listener = bufferListener;
          segments = [];
          polygon = [];
          clean = true;
        },
        polygonEnd: function() {
          listener = listener_;
          segments = d3.merge(segments);
          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
          if (inside || visible) {
            listener.polygonStart();
            if (inside) {
              listener.lineStart();
              interpolate(null, null, 1, listener);
              listener.lineEnd();
            }
            if (visible) {
              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
            }
            listener.polygonEnd();
          }
          segments = polygon = ring = null;
        }
      };
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {
          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
            b = v[j];
            if (a[1] <= y) {
              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
            } else {
              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
            }
            a = b;
          }
        }
        return wn !== 0;
      }
      function interpolate(from, to, direction, listener) {
        var a = 0, a1 = 0;
        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
          do {
            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
          } while ((a = (a + direction + 4) % 4) !== a1);
        } else {
          listener.point(to[0], to[1]);
        }
      }
      function pointVisible(x, y) {
        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
      }
      function point(x, y) {
        if (pointVisible(x, y)) listener.point(x, y);
      }
      var x__, y__, v__, x_, y_, v_, first, clean;
      function lineStart() {
        clip.point = linePoint;
        if (polygon) polygon.push(ring = []);
        first = true;
        v_ = false;
        x_ = y_ = NaN;
      }
      function lineEnd() {
        if (segments) {
          linePoint(x__, y__);
          if (v__ && v_) bufferListener.rejoin();
          segments.push(bufferListener.buffer());
        }
        clip.point = point;
        if (v_) listener.lineEnd();
      }
      function linePoint(x, y) {
        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
        var v = pointVisible(x, y);
        if (polygon) ring.push([ x, y ]);
        if (first) {
          x__ = x, y__ = y, v__ = v;
          first = false;
          if (v) {
            listener.lineStart();
            listener.point(x, y);
          }
        } else {
          if (v && v_) listener.point(x, y); else {
            var l = {
              a: {
                x: x_,
                y: y_
              },
              b: {
                x: x,
                y: y
              }
            };
            if (clipLine(l)) {
              if (!v_) {
                listener.lineStart();
                listener.point(l.a.x, l.a.y);
              }
              listener.point(l.b.x, l.b.y);
              if (!v) listener.lineEnd();
              clean = false;
            } else if (v) {
              listener.lineStart();
              listener.point(x, y);
              clean = false;
            }
          }
        }
        x_ = x, y_ = y, v_ = v;
      }
      return clip;
    };
    function corner(p, direction) {
      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
    }
    function compare(a, b) {
      return comparePoints(a.x, b.x);
    }
    function comparePoints(a, b) {
      var ca = corner(a, 1), cb = corner(b, 1);
      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
    }
  }
  function d3_geo_conic(projectAt) {
    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
    };
    return p;
  }
  function d3_geo_conicEqualArea(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function forward(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return forward;
  }
  (d3.geo.conicEqualArea = function() {
    return d3_geo_conic(d3_geo_conicEqualArea);
  }).raw = d3_geo_conicEqualArea;
  d3.geo.albers = function() {
    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
    var point, pointStream = {
      point: function(x, y) {
        point = [ x, y ];
      }
    }, lower48Point, alaskaPoint, hawaiiPoint;
    function albersUsa(coordinates) {
      var x = coordinates[0], y = coordinates[1];
      point = null;
      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
      return point;
    }
    albersUsa.invert = function(coordinates) {
      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
    };
    albersUsa.stream = function(stream) {
      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
      return {
        point: function(x, y) {
          lower48Stream.point(x, y);
          alaskaStream.point(x, y);
          hawaiiStream.point(x, y);
        },
        sphere: function() {
          lower48Stream.sphere();
          alaskaStream.sphere();
          hawaiiStream.sphere();
        },
        lineStart: function() {
          lower48Stream.lineStart();
          alaskaStream.lineStart();
          hawaiiStream.lineStart();
        },
        lineEnd: function() {
          lower48Stream.lineEnd();
          alaskaStream.lineEnd();
          hawaiiStream.lineEnd();
        },
        polygonStart: function() {
          lower48Stream.polygonStart();
          alaskaStream.polygonStart();
          hawaiiStream.polygonStart();
        },
        polygonEnd: function() {
          lower48Stream.polygonEnd();
          alaskaStream.polygonEnd();
          hawaiiStream.polygonEnd();
        }
      };
    };
    albersUsa.precision = function(_) {
      if (!arguments.length) return lower48.precision();
      lower48.precision(_);
      alaska.precision(_);
      hawaii.precision(_);
      return albersUsa;
    };
    albersUsa.scale = function(_) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(_);
      alaska.scale(_ * .35);
      hawaii.scale(_);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(_) {
      if (!arguments.length) return lower48.translate();
      var k = lower48.scale(), x = +_[0], y = +_[1];
      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      return albersUsa;
    };
    return albersUsa.scale(1070);
  };
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
  var d3_geo_pathBounds = {
    point: d3_geo_pathBoundsPoint,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_pathBoundsPoint(x, y) {
    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathBufferCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathBufferCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    d3_geo_centroidX0 += x;
    d3_geo_centroidY0 += y;
    ++d3_geo_centroidZ0;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      z = y0 * x - x0 * y;
      d3_geo_centroidX2 += z * (x0 + x);
      d3_geo_centroidY2 += z * (y0 + y);
      d3_geo_centroidZ2 += z * 3;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x + pointRadius, y);
      context.arc(x, y, pointRadius, 0, τ);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
    function resample(stream) {
      return (maxDepth ? resampleRecursive : resampleNone)(stream);
    }
    function resampleNone(stream) {
      return d3_geo_transformPoint(stream, function(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      });
    }
    function resampleRecursive(stream) {
      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = ringStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function ringStart() {
        lineStart();
        resample.point = ringPoint;
        resample.lineEnd = ringEnd;
      }
      function ringPoint(λ, φ) {
        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
        resample.point = linePoint;
      }
      function ringEnd() {
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
        resample.lineEnd = lineEnd;
        lineEnd();
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
    function path(object) {
      if (object) {
        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
        d3.geo.stream(object, cacheStream);
      }
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
    };
    path.bounds = function(object) {
      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return reset();
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
      return reset();
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
      return path;
    };
    function reset() {
      cacheStream = null;
      return path;
    }
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(x, y) {
      return project([ x * d3_degrees, y * d3_degrees ]);
    });
    return function(stream) {
      return d3_geo_projectionRadians(resample(stream));
    };
  }
  d3.geo.transform = function(methods) {
    return {
      stream: function(stream) {
        var transform = new d3_geo_transform(stream);
        for (var k in methods) transform[k] = methods[k];
        return transform;
      }
    };
  };
  function d3_geo_transform(stream) {
    this.stream = stream;
  }
  d3_geo_transform.prototype = {
    point: function(x, y) {
      this.stream.point(x, y);
    },
    sphere: function() {
      this.stream.sphere();
    },
    lineStart: function() {
      this.stream.lineStart();
    },
    lineEnd: function() {
      this.stream.lineEnd();
    },
    polygonStart: function() {
      this.stream.polygonStart();
    },
    polygonEnd: function() {
      this.stream.polygonEnd();
    }
  };
  function d3_geo_transformPoint(stream, point) {
    return {
      point: point,
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(output) {
      if (stream) stream.valid = false;
      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
      stream.valid = true;
      return stream;
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
      return invalidate();
    };
    projection.clipExtent = function(_) {
      if (!arguments.length) return clipExtent;
      clipExtent = _;
      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
      return invalidate();
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return invalidate();
    }
    function invalidate() {
      if (stream) stream.valid = false, stream = null;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadians(stream) {
    return d3_geo_transformPoint(stream, function(x, y) {
      stream.point(x * d3_radians, y * d3_radians);
    });
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  d3.geo.rotation = function(rotate) {
    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
    function forward(coordinates) {
      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    }
    forward.invert = function(coordinates) {
      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    };
    return forward;
  };
  function d3_geo_identityRotation(λ, φ) {
    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
  }
  d3_geo_identityRotation.invert = d3_geo_equirectangular;
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
    };
    return rotation;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radius, precision) {
    var cr = Math.cos(radius), sr = Math.sin(radius);
    return function(from, to, direction, listener) {
      var step = direction * precision;
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * τ;
      } else {
        from = radius + direction * τ;
        to = radius - .5 * step;
      }
      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = d3_acos(-a[1]);
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  d3.geo.distance = function(a, b) {
    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
  };
  d3.geo.graticule = function() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
        return abs(x % DX) > ε;
      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
        return abs(y % DY) > ε;
      }).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return graticule.minorExtent();
      return graticule.majorExtent(_).minorExtent(_);
    };
    graticule.majorExtent = function(_) {
      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
      X0 = +_[0][0], X1 = +_[1][0];
      Y0 = +_[0][1], Y1 = +_[1][1];
      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
      return graticule.precision(precision);
    };
    graticule.minorExtent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return graticule.minorStep();
      return graticule.majorStep(_).minorStep(_);
    };
    graticule.majorStep = function(_) {
      if (!arguments.length) return [ DX, DY ];
      DX = +_[0], DY = +_[1];
      return graticule;
    };
    graticule.minorStep = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, 90);
      y = d3_geo_graticuleY(x0, x1, precision);
      X = d3_geo_graticuleX(Y0, Y1, 90);
      Y = d3_geo_graticuleY(X0, X1, precision);
      return graticule;
    };
    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_source(d) {
    return d.source;
  }
  function d3_target(d) {
    return d.target;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_;
    function greatArc() {
      return {
        type: "LineString",
        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
      };
    }
    greatArc.distance = function() {
      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.precision = function() {
      return arguments.length ? greatArc : 0;
    };
    return greatArc;
  };
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.length = function(object) {
    d3_geo_lengthSum = 0;
    d3.geo.stream(object, d3_geo_length);
    return d3_geo_lengthSum;
  };
  var d3_geo_lengthSum;
  var d3_geo_length = {
    sphere: d3_noop,
    point: d3_noop,
    lineStart: d3_geo_lengthLineStart,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_lengthLineStart() {
    var λ0, sinφ0, cosφ0;
    d3_geo_length.point = function(λ, φ) {
      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
      d3_geo_length.point = nextPoint;
    };
    d3_geo_length.lineEnd = function() {
      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
    };
    function nextPoint(λ, φ) {
      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
    }
  }
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  function d3_geo_conicConformal(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), t = function(φ) {
      return Math.tan(π / 4 + φ / 2);
    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
    if (!n) return d3_geo_mercator;
    function forward(λ, φ) {
      if (F > 0) {
        if (φ < -halfπ + ε) φ = -halfπ + ε;
      } else {
        if (φ > halfπ - ε) φ = halfπ - ε;
      }
      var ρ = F / Math.pow(t(φ), n);
      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
    };
    return forward;
  }
  (d3.geo.conicConformal = function() {
    return d3_geo_conic(d3_geo_conicConformal);
  }).raw = d3_geo_conicConformal;
  function d3_geo_conicEquidistant(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
    if (abs(n) < ε) return d3_geo_equirectangular;
    function forward(λ, φ) {
      var ρ = G - φ;
      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = G - y;
      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
    };
    return forward;
  }
  (d3.geo.conicEquidistant = function() {
    return d3_geo_conic(d3_geo_conicEquidistant);
  }).raw = d3_geo_conicEquidistant;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  function d3_geo_mercator(λ, φ) {
    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
  };
  function d3_geo_mercatorProjection(project) {
    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
    m.scale = function() {
      var v = scale.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.translate = function() {
      var v = translate.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.clipExtent = function(_) {
      var v = clipExtent.apply(m, arguments);
      if (v === m) {
        if (clipAuto = _ == null) {
          var k = π * scale(), t = translate();
          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
        }
      } else if (clipAuto) {
        v = null;
      }
      return v;
    };
    return m.clipExtent(null);
  }
  (d3.geo.mercator = function() {
    return d3_geo_mercatorProjection(d3_geo_mercator);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_transverseMercator(λ, φ) {
    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
  }
  d3_geo_transverseMercator.invert = function(x, y) {
    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
  };
  (d3.geo.transverseMercator = function() {
    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
    projection.center = function(_) {
      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
    };
    projection.rotate = function(_) {
      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
      [ _[0], _[1], _[2] - 90 ]);
    };
    return rotate([ 0, 0, 90 ]);
  }).raw = d3_geo_transverseMercator;
  d3.geom = {};
  function d3_geom_pointX(d) {
    return d[0];
  }
  function d3_geom_pointY(d) {
    return d[1];
  }
  d3.geom.hull = function(vertices) {
    var x = d3_geom_pointX, y = d3_geom_pointY;
    if (arguments.length) return hull(vertices);
    function hull(data) {
      if (data.length < 3) return [];
      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
      for (i = 0; i < n; i++) {
        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
      }
      points.sort(d3_geom_hullOrder);
      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
      return polygon;
    }
    hull.x = function(_) {
      return arguments.length ? (x = _, hull) : x;
    };
    hull.y = function(_) {
      return arguments.length ? (y = _, hull) : y;
    };
    return hull;
  };
  function d3_geom_hullUpper(points) {
    var n = points.length, hull = [ 0, 1 ], hs = 2;
    for (var i = 2; i < n; i++) {
      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
      hull[hs++] = i;
    }
    return hull.slice(0, hs);
  }
  function d3_geom_hullOrder(a, b) {
    return a[0] - b[0] || a[1] - b[1];
  }
  d3.geom.polygon = function(coordinates) {
    d3_subclass(coordinates, d3_geom_polygonPrototype);
    return coordinates;
  };
  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
  d3_geom_polygonPrototype.area = function() {
    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
    while (++i < n) {
      a = b;
      b = this[i];
      area += a[1] * b[0] - a[0] * b[1];
    }
    return area * .5;
  };
  d3_geom_polygonPrototype.centroid = function(k) {
    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
    if (!arguments.length) k = -1 / (6 * this.area());
    while (++i < n) {
      a = b;
      b = this[i];
      c = a[0] * b[1] - b[0] * a[1];
      x += (a[0] + b[0]) * c;
      y += (a[1] + b[1]) * c;
    }
    return [ x * k, y * k ];
  };
  d3_geom_polygonPrototype.clip = function(subject) {
    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
    while (++i < n) {
      input = subject.slice();
      subject.length = 0;
      b = this[i];
      c = input[(m = input.length - closed) - 1];
      j = -1;
      while (++j < m) {
        d = input[j];
        if (d3_geom_polygonInside(d, a, b)) {
          if (!d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          subject.push(d);
        } else if (d3_geom_polygonInside(c, a, b)) {
          subject.push(d3_geom_polygonIntersect(c, d, a, b));
        }
        c = d;
      }
      if (closed) subject.push(subject[0]);
      a = b;
    }
    return subject;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  function d3_geom_polygonClosed(coordinates) {
    var a = coordinates[0], b = coordinates[coordinates.length - 1];
    return !(a[0] - b[0] || a[1] - b[1]);
  }
  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  function d3_geom_voronoiBeach() {
    d3_geom_voronoiRedBlackNode(this);
    this.edge = this.site = this.circle = null;
  }
  function d3_geom_voronoiCreateBeach(site) {
    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
    beach.site = site;
    return beach;
  }
  function d3_geom_voronoiDetachBeach(beach) {
    d3_geom_voronoiDetachCircle(beach);
    d3_geom_voronoiBeaches.remove(beach);
    d3_geom_voronoiBeachPool.push(beach);
    d3_geom_voronoiRedBlackNode(beach);
  }
  function d3_geom_voronoiRemoveBeach(beach) {
    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
      x: x,
      y: y
    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
    d3_geom_voronoiDetachBeach(beach);
    var lArc = previous;
    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
      previous = lArc.P;
      disappearing.unshift(lArc);
      d3_geom_voronoiDetachBeach(lArc);
      lArc = previous;
    }
    disappearing.unshift(lArc);
    d3_geom_voronoiDetachCircle(lArc);
    var rArc = next;
    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
      next = rArc.N;
      disappearing.push(rArc);
      d3_geom_voronoiDetachBeach(rArc);
      rArc = next;
    }
    disappearing.push(rArc);
    d3_geom_voronoiDetachCircle(rArc);
    var nArcs = disappearing.length, iArc;
    for (iArc = 1; iArc < nArcs; ++iArc) {
      rArc = disappearing[iArc];
      lArc = disappearing[iArc - 1];
      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
    }
    lArc = disappearing[0];
    rArc = disappearing[nArcs - 1];
    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiAddBeach(site) {
    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
    while (node) {
      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
      if (dxl > ε) node = node.L; else {
        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
        if (dxr > ε) {
          if (!node.R) {
            lArc = node;
            break;
          }
          node = node.R;
        } else {
          if (dxl > -ε) {
            lArc = node.P;
            rArc = node;
          } else if (dxr > -ε) {
            lArc = node;
            rArc = node.N;
          } else {
            lArc = rArc = node;
          }
          break;
        }
      }
    }
    var newArc = d3_geom_voronoiCreateBeach(site);
    d3_geom_voronoiBeaches.insert(lArc, newArc);
    if (!lArc && !rArc) return;
    if (lArc === rArc) {
      d3_geom_voronoiDetachCircle(lArc);
      rArc = d3_geom_voronoiCreateBeach(lArc.site);
      d3_geom_voronoiBeaches.insert(newArc, rArc);
      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      d3_geom_voronoiAttachCircle(lArc);
      d3_geom_voronoiAttachCircle(rArc);
      return;
    }
    if (!rArc) {
      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      return;
    }
    d3_geom_voronoiDetachCircle(lArc);
    d3_geom_voronoiDetachCircle(rArc);
    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
      x: (cy * hb - by * hc) / d + ax,
      y: (bx * hc - cx * hb) / d + ay
    };
    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
    if (!pby2) return rfocx;
    var lArc = arc.P;
    if (!lArc) return -Infinity;
    site = lArc.site;
    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
    if (!plby2) return lfocx;
    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
    return (rfocx + lfocx) / 2;
  }
  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
    var rArc = arc.N;
    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
    var site = arc.site;
    return site.y === directrix ? site.x : Infinity;
  }
  function d3_geom_voronoiCell(site) {
    this.site = site;
    this.edges = [];
  }
  d3_geom_voronoiCell.prototype.prepare = function() {
    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
    while (iHalfEdge--) {
      edge = halfEdges[iHalfEdge].edge;
      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
    }
    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
    return halfEdges.length;
  };
  function d3_geom_voronoiCloseCells(extent) {
    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
    while (iCell--) {
      cell = cells[iCell];
      if (!cell || !cell.prepare()) continue;
      halfEdges = cell.edges;
      nHalfEdges = halfEdges.length;
      iHalfEdge = 0;
      while (iHalfEdge < nHalfEdges) {
        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
            x: x0,
            y: abs(x2 - x0) < ε ? y2 : y1
          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
            x: abs(y2 - y1) < ε ? x2 : x1,
            y: y1
          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
            x: x1,
            y: abs(x2 - x1) < ε ? y2 : y0
          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
            x: abs(y2 - y0) < ε ? x2 : x0,
            y: y0
          } : null), cell.site, null));
          ++nHalfEdges;
        }
      }
    }
  }
  function d3_geom_voronoiHalfEdgeOrder(a, b) {
    return b.angle - a.angle;
  }
  function d3_geom_voronoiCircle() {
    d3_geom_voronoiRedBlackNode(this);
    this.x = this.y = this.arc = this.site = this.cy = null;
  }
  function d3_geom_voronoiAttachCircle(arc) {
    var lArc = arc.P, rArc = arc.N;
    if (!lArc || !rArc) return;
    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
    if (lSite === rSite) return;
    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
    var d = 2 * (ax * cy - ay * cx);
    if (d >= -ε2) return;
    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
    circle.arc = arc;
    circle.site = cSite;
    circle.x = x + bx;
    circle.y = cy + Math.sqrt(x * x + y * y);
    circle.cy = cy;
    arc.circle = circle;
    var before = null, node = d3_geom_voronoiCircles._;
    while (node) {
      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
        if (node.L) node = node.L; else {
          before = node.P;
          break;
        }
      } else {
        if (node.R) node = node.R; else {
          before = node;
          break;
        }
      }
    }
    d3_geom_voronoiCircles.insert(before, circle);
    if (!before) d3_geom_voronoiFirstCircle = circle;
  }
  function d3_geom_voronoiDetachCircle(arc) {
    var circle = arc.circle;
    if (circle) {
      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
      d3_geom_voronoiCircles.remove(circle);
      d3_geom_voronoiCirclePool.push(circle);
      d3_geom_voronoiRedBlackNode(circle);
      arc.circle = null;
    }
  }
  function d3_geom_voronoiClipEdges(extent) {
    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
    while (i--) {
      e = edges[i];
      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
        e.a = e.b = null;
        edges.splice(i, 1);
      }
    }
  }
  function d3_geom_voronoiConnectEdge(edge, extent) {
    var vb = edge.b;
    if (vb) return true;
    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
    if (ry === ly) {
      if (fx < x0 || fx >= x1) return;
      if (lx > rx) {
        if (!va) va = {
          x: fx,
          y: y0
        }; else if (va.y >= y1) return;
        vb = {
          x: fx,
          y: y1
        };
      } else {
        if (!va) va = {
          x: fx,
          y: y1
        }; else if (va.y < y0) return;
        vb = {
          x: fx,
          y: y0
        };
      }
    } else {
      fm = (lx - rx) / (ry - ly);
      fb = fy - fm * fx;
      if (fm < -1 || fm > 1) {
        if (lx > rx) {
          if (!va) va = {
            x: (y0 - fb) / fm,
            y: y0
          }; else if (va.y >= y1) return;
          vb = {
            x: (y1 - fb) / fm,
            y: y1
          };
        } else {
          if (!va) va = {
            x: (y1 - fb) / fm,
            y: y1
          }; else if (va.y < y0) return;
          vb = {
            x: (y0 - fb) / fm,
            y: y0
          };
        }
      } else {
        if (ly < ry) {
          if (!va) va = {
            x: x0,
            y: fm * x0 + fb
          }; else if (va.x >= x1) return;
          vb = {
            x: x1,
            y: fm * x1 + fb
          };
        } else {
          if (!va) va = {
            x: x1,
            y: fm * x1 + fb
          }; else if (va.x < x0) return;
          vb = {
            x: x0,
            y: fm * x0 + fb
          };
        }
      }
    }
    edge.a = va;
    edge.b = vb;
    return true;
  }
  function d3_geom_voronoiEdge(lSite, rSite) {
    this.l = lSite;
    this.r = rSite;
    this.a = this.b = null;
  }
  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, rSite);
    d3_geom_voronoiEdges.push(edge);
    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
    return edge;
  }
  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, null);
    edge.a = va;
    edge.b = vb;
    d3_geom_voronoiEdges.push(edge);
    return edge;
  }
  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
    if (!edge.a && !edge.b) {
      edge.a = vertex;
      edge.l = lSite;
      edge.r = rSite;
    } else if (edge.l === rSite) {
      edge.b = vertex;
    } else {
      edge.a = vertex;
    }
  }
  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
    var va = edge.a, vb = edge.b;
    this.edge = edge;
    this.site = lSite;
    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
  }
  d3_geom_voronoiHalfEdge.prototype = {
    start: function() {
      return this.edge.l === this.site ? this.edge.a : this.edge.b;
    },
    end: function() {
      return this.edge.l === this.site ? this.edge.b : this.edge.a;
    }
  };
  function d3_geom_voronoiRedBlackTree() {
    this._ = null;
  }
  function d3_geom_voronoiRedBlackNode(node) {
    node.U = node.C = node.L = node.R = node.P = node.N = null;
  }
  d3_geom_voronoiRedBlackTree.prototype = {
    insert: function(after, node) {
      var parent, grandpa, uncle;
      if (after) {
        node.P = after;
        node.N = after.N;
        if (after.N) after.N.P = node;
        after.N = node;
        if (after.R) {
          after = after.R;
          while (after.L) after = after.L;
          after.L = node;
        } else {
          after.R = node;
        }
        parent = after;
      } else if (this._) {
        after = d3_geom_voronoiRedBlackFirst(this._);
        node.P = null;
        node.N = after;
        after.P = after.L = node;
        parent = after;
      } else {
        node.P = node.N = null;
        this._ = node;
        parent = null;
      }
      node.L = node.R = null;
      node.U = parent;
      node.C = true;
      after = node;
      while (parent && parent.C) {
        grandpa = parent.U;
        if (parent === grandpa.L) {
          uncle = grandpa.R;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.R) {
              d3_geom_voronoiRedBlackRotateLeft(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
          }
        } else {
          uncle = grandpa.L;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.L) {
              d3_geom_voronoiRedBlackRotateRight(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
          }
        }
        parent = after.U;
      }
      this._.C = false;
    },
    remove: function(node) {
      if (node.N) node.N.P = node.P;
      if (node.P) node.P.N = node.N;
      node.N = node.P = null;
      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
      if (parent) {
        if (parent.L === node) parent.L = next; else parent.R = next;
      } else {
        this._ = next;
      }
      if (left && right) {
        red = next.C;
        next.C = node.C;
        next.L = left;
        left.U = next;
        if (next !== right) {
          parent = next.U;
          next.U = node.U;
          node = next.R;
          parent.L = node;
          next.R = right;
          right.U = next;
        } else {
          next.U = parent;
          parent = next;
          node = next.R;
        }
      } else {
        red = node.C;
        node = next;
      }
      if (node) node.U = parent;
      if (red) return;
      if (node && node.C) {
        node.C = false;
        return;
      }
      do {
        if (node === this._) break;
        if (node === parent.L) {
          sibling = parent.R;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            sibling = parent.R;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.R || !sibling.R.C) {
              sibling.L.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateRight(this, sibling);
              sibling = parent.R;
            }
            sibling.C = parent.C;
            parent.C = sibling.R.C = false;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            node = this._;
            break;
          }
        } else {
          sibling = parent.L;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            sibling = parent.L;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.L || !sibling.L.C) {
              sibling.R.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
              sibling = parent.L;
            }
            sibling.C = parent.C;
            parent.C = sibling.L.C = false;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            node = this._;
            break;
          }
        }
        sibling.C = true;
        node = parent;
        parent = parent.U;
      } while (!node.C);
      if (node) node.C = false;
    }
  };
  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
    var p = node, q = node.R, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.R = q.L;
    if (p.R) p.R.U = p;
    q.L = p;
  }
  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
    var p = node, q = node.L, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.L = q.R;
    if (p.L) p.L.U = p;
    q.R = p;
  }
  function d3_geom_voronoiRedBlackFirst(node) {
    while (node.L) node = node.L;
    return node;
  }
  function d3_geom_voronoi(sites, bbox) {
    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
    d3_geom_voronoiEdges = [];
    d3_geom_voronoiCells = new Array(sites.length);
    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
    while (true) {
      circle = d3_geom_voronoiFirstCircle;
      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
        if (site.x !== x0 || site.y !== y0) {
          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
          d3_geom_voronoiAddBeach(site);
          x0 = site.x, y0 = site.y;
        }
        site = sites.pop();
      } else if (circle) {
        d3_geom_voronoiRemoveBeach(circle.arc);
      } else {
        break;
      }
    }
    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
    var diagram = {
      cells: d3_geom_voronoiCells,
      edges: d3_geom_voronoiEdges
    };
    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
    return diagram;
  }
  function d3_geom_voronoiVertexOrder(a, b) {
    return b.y - a.y || b.x - a.x;
  }
  d3.geom.voronoi = function(points) {
    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
    if (points) return voronoi(points);
    function voronoi(data) {
      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
          var s = e.start();
          return [ s.x, s.y ];
        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
        polygon.point = data[i];
      });
      return polygons;
    }
    function sites(data) {
      return data.map(function(d, i) {
        return {
          x: Math.round(fx(d, i) / ε) * ε,
          y: Math.round(fy(d, i) / ε) * ε,
          i: i
        };
      });
    }
    voronoi.links = function(data) {
      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
        return edge.l && edge.r;
      }).map(function(edge) {
        return {
          source: data[edge.l.i],
          target: data[edge.r.i]
        };
      });
    };
    voronoi.triangles = function(data) {
      var triangles = [];
      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
        while (++j < m) {
          e0 = e1;
          s0 = s1;
          e1 = edges[j].edge;
          s1 = e1.l === site ? e1.r : e1.l;
          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
          }
        }
      });
      return triangles;
    };
    voronoi.x = function(_) {
      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
    };
    voronoi.y = function(_) {
      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
    };
    voronoi.clipExtent = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
      return voronoi;
    };
    voronoi.size = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
    };
    return voronoi;
  };
  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
  function d3_geom_voronoiTriangleArea(a, b, c) {
    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
  }
  d3.geom.delaunay = function(vertices) {
    return d3.geom.voronoi().triangles(vertices);
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
    if (compat = arguments.length) {
      x = d3_geom_quadtreeCompatX;
      y = d3_geom_quadtreeCompatY;
      if (compat === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      }
      return quadtree(points);
    }
    function quadtree(data) {
      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
      if (x1 != null) {
        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
      } else {
        x2_ = y2_ = -(x1_ = y1_ = Infinity);
        xs = [], ys = [];
        n = data.length;
        if (compat) for (i = 0; i < n; ++i) {
          d = data[i];
          if (d.x < x1_) x1_ = d.x;
          if (d.y < y1_) y1_ = d.y;
          if (d.x > x2_) x2_ = d.x;
          if (d.y > y2_) y2_ = d.y;
          xs.push(d.x);
          ys.push(d.y);
        } else for (i = 0; i < n; ++i) {
          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
          if (x_ < x1_) x1_ = x_;
          if (y_ < y1_) y1_ = y_;
          if (x_ > x2_) x2_ = x_;
          if (y_ > y2_) y2_ = y_;
          xs.push(x_);
          ys.push(y_);
        }
      }
      var dx = x2_ - x1_, dy = y2_ - y1_;
      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
      function insert(n, d, x, y, x1, y1, x2, y2) {
        if (isNaN(x) || isNaN(y)) return;
        if (n.leaf) {
          var nx = n.x, ny = n.y;
          if (nx != null) {
            if (abs(nx - x) + abs(ny - y) < .01) {
              insertChild(n, d, x, y, x1, y1, x2, y2);
            } else {
              var nPoint = n.point;
              n.x = n.y = n.point = null;
              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
              insertChild(n, d, x, y, x1, y1, x2, y2);
            }
          } else {
            n.x = x, n.y = y, n.point = d;
          }
        } else {
          insertChild(n, d, x, y, x1, y1, x2, y2);
        }
      }
      function insertChild(n, d, x, y, x1, y1, x2, y2) {
        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
        n.leaf = false;
        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
        if (right) x1 = xm; else x2 = xm;
        if (below) y1 = ym; else y2 = ym;
        insert(n, d, x, y, x1, y1, x2, y2);
      }
      var root = d3_geom_quadtreeNode();
      root.add = function(d) {
        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
      };
      root.visit = function(f) {
        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
      };
      root.find = function(point) {
        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
      };
      i = -1;
      if (x1 == null) {
        while (++i < n) {
          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
        }
        --i;
      } else data.forEach(root.add);
      xs = ys = data = d = null;
      return root;
    }
    quadtree.x = function(_) {
      return arguments.length ? (x = _, quadtree) : x;
    };
    quadtree.y = function(_) {
      return arguments.length ? (y = _, quadtree) : y;
    };
    quadtree.extent = function(_) {
      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
      y2 = +_[1][1];
      return quadtree;
    };
    quadtree.size = function(_) {
      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
      return quadtree;
    };
    return quadtree;
  };
  function d3_geom_quadtreeCompatX(d) {
    return d.x;
  }
  function d3_geom_quadtreeCompatY(d) {
    return d.y;
  }
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null,
      x: null,
      y: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
    var minDistance2 = Infinity, closestPoint;
    (function find(node, x1, y1, x2, y2) {
      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
      if (point = node.point) {
        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
        if (distance2 < minDistance2) {
          var distance = Math.sqrt(minDistance2 = distance2);
          x0 = x - distance, y0 = y - distance;
          x3 = x + distance, y3 = y + distance;
          closestPoint = point;
        }
      }
      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
        if (node = children[i & 3]) switch (i & 3) {
         case 0:
          find(node, x1, y1, xm, ym);
          break;

         case 1:
          find(node, xm, y1, x2, ym);
          break;

         case 2:
          find(node, x1, ym, xm, y2);
          break;

         case 3:
          find(node, xm, ym, x2, y2);
          break;
        }
      }
    })(root, x0, y0, x3, y3);
    return closestPoint;
  }
  d3.interpolateRgb = d3_interpolateRgb;
  function d3_interpolateRgb(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  }
  d3.interpolateObject = d3_interpolateObject;
  function d3_interpolateObject(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolate(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }
  d3.interpolateNumber = d3_interpolateNumber;
  function d3_interpolateNumber(a, b) {
    a = +a, b = +b;
    return function(t) {
      return a * (1 - t) + b * t;
    };
  }
  d3.interpolateString = d3_interpolateString;
  function d3_interpolateString(a, b) {
    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
    a = a + "", b = b + "";
    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
      if ((bs = bm.index) > bi) {
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) {
        if (s[i]) s[i] += bm; else s[++i] = bm;
      } else {
        s[++i] = null;
        q.push({
          i: i,
          x: d3_interpolateNumber(am, bm)
        });
      }
      bi = d3_interpolate_numberB.lastIndex;
    }
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; else s[++i] = bs;
    }
    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
      return b(t) + "";
    }) : function() {
      return b;
    } : (b = q.length, function(t) {
      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    });
  }
  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
  d3.interpolate = d3_interpolate;
  function d3_interpolate(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  }
  d3.interpolators = [ function(a, b) {
    var t = typeof b;
    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
  } ];
  d3.interpolateArray = d3_interpolateArray;
  function d3_interpolateArray(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * halfπ);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.interpolateHcl = d3_interpolateHcl;
  function d3_interpolateHcl(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  }
  d3.interpolateHsl = d3_interpolateHsl;
  function d3_interpolateHsl(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
    };
  }
  d3.interpolateLab = d3_interpolateLab;
  function d3_interpolateLab(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  }
  d3.interpolateRound = d3_interpolateRound;
  function d3_interpolateRound(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      if (string != null) {
        g.setAttribute("transform", string);
        var t = g.transform.baseVal.consolidate();
      }
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolateTransform = d3_interpolateTransform;
  function d3_interpolateTransformPop(s) {
    return s.length ? s.pop() + "," : "";
  }
  function d3_interpolateTranslate(ta, tb, s, q) {
    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
      var i = s.push("translate(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ta[0], tb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    }
  }
  function d3_interpolateRotate(ra, rb, s, q) {
    if (ra !== rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
        x: d3_interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
    }
  }
  function d3_interpolateSkew(wa, wb, s, q) {
    if (wa !== wb) {
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
        x: d3_interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
    }
  }
  function d3_interpolateScale(ka, kb, s, q) {
    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ka[0], kb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] !== 1 || kb[1] !== 1) {
      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
    }
  }
  function d3_interpolateTransform(a, b) {
    var s = [], q = [];
    a = d3.transform(a), b = d3.transform(b);
    d3_interpolateTranslate(a.translate, b.translate, s, q);
    d3_interpolateRotate(a.rotate, b.rotate, s, q);
    d3_interpolateSkew(a.skew, b.skew, s, q);
    d3_interpolateScale(a.scale, b.scale, s, q);
    a = b = null;
    return function(t) {
      var i = -1, n = q.length, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  }
  function d3_uninterpolateNumber(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return (x - a) / b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) / b));
    };
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (τ - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: groupSums[di]
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
          if (dw * dw / theta2 < dn) {
            if (dn < chargeDistance2) {
              var k = quad.charge / dn;
              node.px -= dx * k;
              node.py -= dy * k;
            }
            return true;
          }
          if (quad.point && dn && dn < chargeDistance2) {
            var k = quad.pointCharge / dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        timer = null;
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.chargeDistance = function(x) {
      if (!arguments.length) return Math.sqrt(chargeDistance2);
      chargeDistance2 = x * x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return Math.sqrt(theta2);
      theta2 = x * x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) {
          alpha = x;
        } else {
          timer.c = null, timer.t = NaN, timer = null;
          event.end({
            type: "end",
            alpha: alpha = 0
          });
        }
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        timer = d3_timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        if (!neighbors) {
          neighbors = new Array(n);
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        var candidates = neighbors[i], j = -1, l = candidates.length, x;
        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
        return Math.random() * size;
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function hierarchy(root) {
      var stack = [ root ], nodes = [], node;
      root.depth = 0;
      while ((node = stack.pop()) != null) {
        nodes.push(node);
        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
          var n, childs, child;
          while (--n >= 0) {
            stack.push(child = childs[n]);
            child.parent = node;
            child.depth = node.depth + 1;
          }
          if (value) node.value = 0;
          node.children = childs;
        } else {
          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
          delete node.children;
        }
      }
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var childs, parent;
        if (sort && (childs = node.children)) childs.sort(sort);
        if (value && (parent = node.parent)) parent.value += node.value;
      });
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      if (value) {
        d3_layout_hierarchyVisitBefore(root, function(node) {
          if (node.children) node.value = 0;
        });
        d3_layout_hierarchyVisitAfter(root, function(node) {
          var parent;
          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
          if (parent = node.parent) parent.value += node.value;
        });
      }
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyVisitBefore(node, callback) {
    var nodes = [ node ];
    while ((node = nodes.pop()) != null) {
      callback(node);
      if ((children = node.children) && (n = children.length)) {
        var n, children;
        while (--n >= 0) nodes.push(children[n]);
      }
    }
  }
  function d3_layout_hierarchyVisitAfter(node, callback) {
    var nodes = [ node ], nodes2 = [];
    while ((node = nodes.pop()) != null) {
      nodes2.push(node);
      if ((children = node.children) && (n = children.length)) {
        var i = -1, n, children;
        while (++i < n) nodes.push(children[i]);
      }
    }
    while ((node = nodes2.pop()) != null) {
      callback(node);
    }
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
    function pie(data) {
      var n = data.length, values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      index.forEach(function(i) {
        arcs[i] = {
          data: data[i],
          value: v = values[i],
          startAngle: a,
          endAngle: a += v * k + pa,
          padAngle: p
        };
      });
      return arcs;
    }
    pie.value = function(_) {
      if (!arguments.length) return value;
      value = _;
      return pie;
    };
    pie.sort = function(_) {
      if (!arguments.length) return sort;
      sort = _;
      return pie;
    };
    pie.startAngle = function(_) {
      if (!arguments.length) return startAngle;
      startAngle = _;
      return pie;
    };
    pie.endAngle = function(_) {
      if (!arguments.length) return endAngle;
      endAngle = _;
      return pie;
    };
    pie.padAngle = function(_) {
      if (!arguments.length) return padAngle;
      padAngle = _;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      if (!(n = data.length)) return data;
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var m = series[0].length, n, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
        return radius;
      };
      root.x = root.y = 0;
      d3_layout_hierarchyVisitAfter(root, function(d) {
        d.r = +r(d.value);
      });
      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
      if (padding) {
        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r -= dr;
        });
      }
      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
      return nodes;
    }
    pack.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return pack;
    };
    pack.radius = function(_) {
      if (!arguments.length) return radius;
      radius = _ == null || typeof _ === "function" ? _ : +_;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return .999 * dr * dr > dx * dx + dy * dy;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
      d3_layout_hierarchyVisitBefore(root1, secondWalk);
      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
        var left = root0, right = root0, bottom = root0;
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          if (node.x < left.x) left = node;
          if (node.x > right.x) right = node;
          if (node.depth > bottom.depth) bottom = node;
        });
        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          node.x = (node.x + tx) * kx;
          node.y = node.depth * ky;
        });
      }
      return nodes;
    }
    function wrapTree(root0) {
      var root1 = {
        A: null,
        children: [ root0 ]
      }, queue = [ root1 ], node1;
      while ((node1 = queue.pop()) != null) {
        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
          queue.push((children[i] = child = {
            _: children[i],
            parent: node1,
            children: (child = children[i].children) && child.slice() || [],
            A: null,
            a: null,
            z: 0,
            m: 0,
            c: 0,
            s: 0,
            t: null,
            i: i
          }).a = child);
        }
      }
      return root1.children[0];
    }
    function firstWalk(v) {
      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
      if (children.length) {
        d3_layout_treeShift(v);
        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
        if (w) {
          v.z = w.z + separation(v._, w._);
          v.m = v.z - midpoint;
        } else {
          v.z = midpoint;
        }
      } else if (w) {
        v.z = w.z + separation(v._, w._);
      }
      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
    }
    function secondWalk(v) {
      v._.x = v.z + v.parent.m;
      v.m += v.parent.m;
    }
    function apportion(v, w, ancestor) {
      if (w) {
        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
          vom = d3_layout_treeLeft(vom);
          vop = d3_layout_treeRight(vop);
          vop.a = v;
          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
          if (shift > 0) {
            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
            sip += shift;
            sop += shift;
          }
          sim += vim.m;
          sip += vip.m;
          som += vom.m;
          sop += vop.m;
        }
        if (vim && !d3_layout_treeRight(vop)) {
          vop.t = vim;
          vop.m += sim - sop;
        }
        if (vip && !d3_layout_treeLeft(vom)) {
          vom.t = vip;
          vom.m += sip - som;
          ancestor = v;
        }
      }
      return ancestor;
    }
    function sizeNode(node) {
      node.x *= size[0];
      node.y = node.depth * size[1];
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null ? sizeNode : null;
      return tree;
    };
    tree.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) == null ? null : sizeNode;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(v) {
    var children = v.children;
    return children.length ? children[0] : v.t;
  }
  function d3_layout_treeRight(v) {
    var children = v.children, n;
    return (n = children.length) ? children[n - 1] : v.t;
  }
  function d3_layout_treeMove(wm, wp, shift) {
    var change = shift / (wp.i - wm.i);
    wp.c -= change;
    wp.s += shift;
    wm.c += change;
    wp.z += shift;
    wp.m += shift;
  }
  function d3_layout_treeShift(v) {
    var shift = 0, change = 0, children = v.children, i = children.length, w;
    while (--i >= 0) {
      w = children[i];
      w.z += shift;
      w.m += shift;
      shift += w.s + (change += w.c);
    }
  }
  function d3_layout_treeAncestor(vim, v, ancestor) {
    return vim.a.parent === v.parent ? vim.a : ancestor;
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
        node.x = (node.x - root.x) * size[0];
        node.y = (root.y - node.y) * size[1];
      } : function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null;
      return cluster;
    };
    cluster.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) != null;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = root.y = 0;
      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    bates: function(m) {
      var random = d3.random.irwinHall(m);
      return function() {
        return random() / m;
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s;
      };
    }
  };
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
    return domain;
  }
  function d3_scale_niceStep(step) {
    return step ? {
      floor: function(x) {
        return Math.floor(x / step) * step;
      },
      ceil: function(x) {
        return Math.ceil(x / step) * step;
      }
    } : d3_scale_niceIdentity;
  }
  var d3_scale_niceIdentity = {
    floor: d3_identity,
    ceil: d3_identity
  };
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3_interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3_interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      d3_scale_linearNice(domain, m);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(domain, m) {
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    return domain;
  }
  function d3_scale_linearTickRange(domain, m) {
    if (m == null) m = 10;
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m, format) {
    var range = d3_scale_linearTickRange(domain, m);
    if (format) {
      var match = d3_format_re.exec(format);
      match.shift();
      if (match[8] === "s") {
        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
        match[8] = "f";
        format = d3.format(match.join(""));
        return function(d) {
          return format(prefix.scale(d)) + prefix.symbol;
        };
      }
      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
      format = match.join("");
    } else {
      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
    }
    return d3.format(format);
  }
  var d3_scale_linearFormatSignificant = {
    s: 1,
    g: 1,
    p: 1,
    r: 1,
    e: 1
  };
  function d3_scale_linearPrecision(value) {
    return -Math.floor(Math.log(value) / Math.LN10 + .01);
  }
  function d3_scale_linearFormatPrecision(type, range) {
    var p = d3_scale_linearPrecision(range[2]);
    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
  };
  function d3_scale_log(linear, base, positive, domain) {
    function log(x) {
      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
    }
    function pow(x) {
      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
    }
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      positive = x[0] >= 0;
      linear.domain((domain = x.map(Number)).map(log));
      return scale;
    };
    scale.base = function(_) {
      if (!arguments.length) return base;
      base = +_;
      linear.domain(domain.map(log));
      return scale;
    };
    scale.nice = function() {
      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
      linear.domain(niced);
      domain = niced.map(pow);
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
      if (isFinite(j - i)) {
        if (positive) {
          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        } else {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (!arguments.length) return d3_scale_logFormat;
      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
      var k = Math.max(1, base * n / scale.ticks().length);
      return function(d) {
        var i = d / pow(Math.round(log(d)));
        if (i * base < base - .5) i *= base;
        return i <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), base, positive, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
    floor: function(x) {
      return -Math.ceil(-x);
    },
    ceil: function(x) {
      return -Math.floor(-x);
    }
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
  };
  function d3_scale_pow(linear, exponent, domain) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      linear.domain((domain = x.map(Number)).map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_linearNice(domain, m));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      linear.domain(domain.map(powp));
      return scale;
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
      0) : (stop - start) / (domain.length - 1 + padding);
      range = steps(start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundPoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
      0) : (stop - start) / (domain.length - 1 + padding) | 0;
      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
      rangeBand = 0;
      ranger = {
        t: "rangeRoundPoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      y = y < 0 ? NaN : y / kx + x0;
      return [ y, y + 1 / kx ];
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      if (x <= x) return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return [ domain[y - 1], domain[y] ];
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  function d3_zero() {
    return 0;
  }
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
    function arc() {
      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
        if (!cw) p1 *= -1;
        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
      }
      if (r1) {
        x0 = r1 * Math.cos(a0 + p1);
        y0 = r1 * Math.sin(a0 + p1);
        x1 = r1 * Math.cos(a1 - p1);
        y1 = r1 * Math.sin(a1 - p1);
        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
          var h1 = (a0 + a1) / 2;
          x0 = r1 * Math.cos(h1);
          y0 = r1 * Math.sin(h1);
          x1 = y1 = null;
        }
      } else {
        x0 = y0 = 0;
      }
      if (r0) {
        x2 = r0 * Math.cos(a1 - p0);
        y2 = r0 * Math.sin(a1 - p0);
        x3 = r0 * Math.cos(a0 + p0);
        y3 = r0 * Math.sin(a0 + p0);
        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
          var h0 = (a0 + a1) / 2;
          x2 = r0 * Math.cos(h0);
          y2 = r0 * Math.sin(h0);
          x3 = y3 = null;
        }
      } else {
        x2 = y2 = 0;
      }
      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
        cr = r0 < r1 ^ cw ? 0 : 1;
        var rc1 = rc, rc0 = rc;
        if (da < π) {
          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
        }
        if (x1 != null) {
          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
          if (rc === rc1) {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
          } else {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
          }
        } else {
          path.push("M", x0, ",", y0);
        }
        if (x3 != null) {
          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
          if (rc === rc0) {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          } else {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          }
        } else {
          path.push("L", x2, ",", y2);
        }
      } else {
        path.push("M", x0, ",", y0);
        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
        path.push("L", x2, ",", y2);
        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
      }
      path.push("Z");
      return path.join("");
    }
    function circleSegment(r1, cw) {
      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.cornerRadius = function(v) {
      if (!arguments.length) return cornerRadius;
      cornerRadius = d3_functor(v);
      return arc;
    };
    arc.padRadius = function(v) {
      if (!arguments.length) return padRadius;
      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.padAngle = function(v) {
      if (!arguments.length) return padAngle;
      padAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcAuto = "auto";
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_arcPadAngle(d) {
    return d && d.padAngle;
  }
  function d3_svg_arcSweep(x0, y0, x1, y1) {
    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
  }
  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
  }
  function d3_svg_line(projection) {
    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    step: d3_svg_lineStep,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.length > 1 ? points.join("L") : points + "Z";
  }
  function d3_svg_lineLinearClosed(points) {
    return points.join("L") + "Z";
  }
  function d3_svg_lineStep(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
    if (n > 1) path.push("H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    points.push(points[n - 1]);
    while (++i <= n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    points.pop();
    path.push("L", pi);
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (abs(d) < ε) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] - halfπ;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3_selectionPrototype.transition = function(name) {
    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
      time: Date.now(),
      ease: d3_ease_cubicInOut,
      delay: 0,
      duration: 250
    };
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_selectionPrototype.interrupt = function(name) {
    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
  };
  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  function d3_selection_interruptNS(ns) {
    return function() {
      var lock, activeId, active;
      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
        active.timer.c = null;
        active.timer.t = NaN;
        if (--lock.count) delete lock[activeId]; else delete this[ns];
        lock.active += .5;
        active.event && active.event.interrupt.call(this, this.__data__, active.index);
      }
    };
  }
  function d3_transition(groups, ns, id) {
    d3_subclass(groups, d3_transitionPrototype);
    groups.namespace = ns;
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3_transitionPrototype.size = d3_selectionPrototype.size;
  d3.transition = function(selection, name) {
    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node[ns][id];
          subnodes = selector.call(node, node.__data__, i, j);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.namespace, this.id);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node[ns][id].tween.remove(name);
    } : function(node) {
      node[ns][id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id, ns = groups.namespace;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node[ns][id].tween.set(name, value);
    }));
  }
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrTween(b) {
      return b == null ? attrNull : (b += "", function() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      });
    }
    function attrTweenNS(b) {
      return b == null ? attrNullNS : (b += "", function() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      });
    }
    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleString(b) {
      return b == null ? styleNull : (b += "", function() {
        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = d3_interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      });
    }
    return d3_transition_tween(this, "style." + name, value, styleString);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    function styleTween(d, i) {
      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    }
    return this.tween("style." + name, styleTween);
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    var ns = this.namespace;
    return this.each("end.transition", function() {
      var p;
      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node[ns][id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].delay;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].delay = +value.call(node, node.__data__, i, j);
    } : (value = +value, function(node) {
      node[ns][id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].duration;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
    } : (value = Math.max(1, value), function(node) {
      node[ns][id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      try {
        d3_transitionInheritId = id;
        d3_selection_each(this, function(node, i, j) {
          d3_transitionInherit = node[ns][id];
          type.call(node, node.__data__, i, j);
        });
      } finally {
        d3_transitionInherit = inherit;
        d3_transitionInheritId = inheritId;
      }
    } else {
      d3_selection_each(this, function(node) {
        var transition = node[ns][id];
        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = node[ns][id0];
          d3_transitionNode(node, i, ns, id1, {
            time: transition.time,
            ease: transition.ease,
            delay: transition.delay + transition.duration,
            duration: transition.duration
          });
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id1);
  };
  function d3_transitionNamespace(name) {
    return name == null ? "__transition__" : "__transition_" + name + "__";
  }
  function d3_transitionNode(node, i, ns, id, inherit) {
    var lock = node[ns] || (node[ns] = {
      active: 0,
      count: 0
    }), transition = lock[id], time, timer, duration, ease, tweens;
    function schedule(elapsed) {
      var delay = transition.delay;
      timer.t = delay + time;
      if (delay <= elapsed) return start(elapsed - delay);
      timer.c = start;
    }
    function start(elapsed) {
      var activeId = lock.active, active = lock[activeId];
      if (active) {
        active.timer.c = null;
        active.timer.t = NaN;
        --lock.count;
        delete lock[activeId];
        active.event && active.event.interrupt.call(node, node.__data__, active.index);
      }
      for (var cancelId in lock) {
        if (+cancelId < id) {
          var cancel = lock[cancelId];
          cancel.timer.c = null;
          cancel.timer.t = NaN;
          --lock.count;
          delete lock[cancelId];
        }
      }
      timer.c = tick;
      d3_timer(function() {
        if (timer.c && tick(elapsed || 1)) {
          timer.c = null;
          timer.t = NaN;
        }
        return 1;
      }, 0, time);
      lock.active = id;
      transition.event && transition.event.start.call(node, node.__data__, i);
      tweens = [];
      transition.tween.forEach(function(key, value) {
        if (value = value.call(node, node.__data__, i)) {
          tweens.push(value);
        }
      });
      ease = transition.ease;
      duration = transition.duration;
    }
    function tick(elapsed) {
      var t = elapsed / duration, e = ease(t), n = tweens.length;
      while (n > 0) {
        tweens[--n].call(node, e);
      }
      if (t >= 1) {
        transition.event && transition.event.end.call(node, node.__data__, i);
        if (--lock.count) delete lock[id]; else delete node[ns];
        return 1;
      }
    }
    if (!transition) {
      time = inherit.time;
      timer = d3_timer(schedule, 0, time);
      transition = lock[id] = {
        tween: new d3_Map(),
        time: time,
        timer: timer,
        delay: inherit.delay,
        duration: inherit.duration,
        ease: inherit.ease,
        index: i
      };
      inherit = null;
      ++lock.count;
    }
  }
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
        d3.transition(path));
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
        if (orient === "bottom" || orient === "top") {
          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
        } else {
          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
        }
        lineEnter.attr(y2, sign * innerTickSize);
        textEnter.attr(y1, sign * tickSpacing);
        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
        if (scale1.rangeBand) {
          var x = scale1, dx = x.rangeBand() / 2;
          scale0 = scale1 = function(d) {
            return x(d) + dx;
          };
        } else if (scale0.rangeBand) {
          scale0 = scale1;
        } else {
          tickExit.call(tickTransform, scale1, scale0);
        }
        tickEnter.call(tickTransform, scale0, scale1);
        tickUpdate.call(tickTransform, scale1, scale1);
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = d3_array(arguments);
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x) {
      var n = arguments.length;
      if (!n) return innerTickSize;
      innerTickSize = +x;
      outerTickSize = +arguments[n - 1];
      return axis;
    };
    axis.innerTickSize = function(x) {
      if (!arguments.length) return innerTickSize;
      innerTickSize = +x;
      return axis;
    };
    axis.outerTickSize = function(x) {
      if (!arguments.length) return outerTickSize;
      outerTickSize = +x;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function() {
      return arguments.length && axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x0, x1) {
    selection.attr("transform", function(d) {
      var v0 = x0(d);
      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y0, y1) {
    selection.attr("transform", function(d) {
      var v0 = y0(d);
      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
    });
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
    function brush(g) {
      g.each(function() {
        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        var background = g.selectAll(".background").data([ 0 ]);
        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
        var resize = g.selectAll(".resize").data(resizes, d3_identity);
        resize.exit().remove();
        resize.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        resize.style("display", brush.empty() ? "none" : null);
        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
        if (x) {
          range = d3_scaleRange(x);
          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
          redrawX(gUpdate);
        }
        if (y) {
          range = d3_scaleRange(y);
          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
          redrawY(gUpdate);
        }
        redraw(gUpdate);
      });
    }
    brush.event = function(g) {
      g.each(function() {
        var event_ = event.of(this, arguments), extent1 = {
          x: xExtent,
          y: yExtent,
          i: xExtentDomain,
          j: yExtentDomain
        }, extent0 = this.__chart__ || extent1;
        this.__chart__ = extent1;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.brush", function() {
            xExtentDomain = extent0.i;
            yExtentDomain = extent0.j;
            xExtent = extent0.x;
            yExtent = extent0.y;
            event_({
              type: "brushstart"
            });
          }).tween("brush:brush", function() {
            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
            xExtentDomain = yExtentDomain = null;
            return function(t) {
              xExtent = extent1.x = xi(t);
              yExtent = extent1.y = yi(t);
              event_({
                type: "brush",
                mode: "resize"
              });
            };
          }).each("end.brush", function() {
            xExtentDomain = extent1.i;
            yExtentDomain = extent1.j;
            event_({
              type: "brush",
              mode: "resize"
            });
            event_({
              type: "brushend"
            });
          });
        } else {
          event_({
            type: "brushstart"
          });
          event_({
            type: "brush",
            mode: "resize"
          });
          event_({
            type: "brushend"
          });
        }
      });
    };
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", xExtent[0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", yExtent[0]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (d3.event.changedTouches) {
        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
      } else {
        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
      }
      g.interrupt().selectAll("*").interrupt();
      if (dragging) {
        origin[0] = xExtent[0] - origin[0];
        origin[1] = yExtent[0] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
        origin[0] = xExtent[ex];
        origin[1] = yExtent[ey];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= xExtent[1];
            origin[1] -= yExtent[1];
            dragging = 2;
          }
          d3_eventPreventDefault();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += xExtent[1];
          origin[1] += yExtent[1];
          dragging = 0;
          d3_eventPreventDefault();
        }
      }
      function brushmove() {
        var point = d3.mouse(target), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
            origin[0] = xExtent[+(point[0] < center[0])];
            origin[1] = yExtent[+(point[1] < center[1])];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0] != min || extent[1] != max) {
          if (i) yExtentDomain = null; else xExtentDomain = null;
          extent[0] = min;
          extent[1] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        dragRestore();
        event_({
          type: "brushend"
        });
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.clamp = function(z) {
      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        if (x) {
          if (xExtentDomain) {
            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
          } else {
            x0 = xExtent[0], x1 = xExtent[1];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          if (yExtentDomain) {
            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
          } else {
            y0 = yExtent[0], y1 = yExtent[1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        xExtentDomain = [ x0, x1 ];
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        yExtentDomain = [ y0, y1 ];
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
      }
      return brush;
    };
    brush.clear = function() {
      if (!brush.empty()) {
        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
        xExtentDomain = yExtentDomain = null;
      }
      return brush;
    };
    brush.empty = function() {
      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
  var d3_time_formatUtc = d3_time_format.utc;
  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  d3_time.second = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3_time.seconds = d3_time.second.range;
  d3_time.seconds.utc = d3_time.second.utc.range;
  d3_time.minute = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3_time.minutes = d3_time.minute.range;
  d3_time.minutes.utc = d3_time.minute.utc.range;
  d3_time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3_time.hours = d3_time.hour.range;
  d3_time.hours.utc = d3_time.hour.utc.range;
  d3_time.month = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3_time.months = d3_time.month.range;
  d3_time.months.utc = d3_time.month.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    function tickMethod(extent, count) {
      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
        return d / 31536e6;
      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
    }
    scale.nice = function(interval, skip) {
      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
      if (method) interval = method[0], skip = method[1];
      function skipped(date) {
        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
      }
      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
        floor: function(date) {
          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
          return date;
        },
        ceil: function(date) {
          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
          return date;
        }
      } : interval));
    };
    scale.ticks = function(interval, skip) {
      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
        range: interval
      }, skip ];
      if (method) interval = method[0], skip = method[1];
      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
    return d.getMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getMinutes();
  } ], [ "%I %p", function(d) {
    return d.getHours();
  } ], [ "%a %d", function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getDate() != 1;
  } ], [ "%B", function(d) {
    return d.getMonth();
  } ], [ "%Y", d3_true ] ]);
  var d3_time_scaleMilliseconds = {
    range: function(start, stop, step) {
      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
    },
    floor: d3_identity,
    ceil: d3_identity
  };
  d3_time_scaleLocalMethods.year = d3_time.year;
  d3_time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
    return d.getUTCMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getUTCSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getUTCMinutes();
  } ], [ "%I %p", function(d) {
    return d.getUTCHours();
  } ], [ "%a %d", function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getUTCDate() != 1;
  } ], [ "%B", function(d) {
    return d.getUTCMonth();
  } ], [ "%Y", d3_true ] ]);
  d3_time_scaleUtcMethods.year = d3_time.year.utc;
  d3_time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
  };
  d3.text = d3_xhrType(function(request) {
    return request.responseText;
  });
  d3.json = function(url, callback) {
    return d3_xhr(url, "application/json", d3_json, callback);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3_xhr(url, "text/html", d3_html, callback);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = d3_xhrType(function(request) {
    return request.responseXML;
  });
  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
}();
},{}],80:[function(require,module,exports){

/**
 * This is the web browser implementation of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = 'undefined' != typeof chrome
               && 'undefined' != typeof chrome.storage
                  ? chrome.storage.local
                  : localstorage();

/**
 * Colors.
 */

exports.colors = [
  'lightseagreen',
  'forestgreen',
  'goldenrod',
  'dodgerblue',
  'darkorchid',
  'crimson'
];

/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */

function useColors() {
  // is webkit? http://stackoverflow.com/a/16459606/376773
  return ('WebkitAppearance' in document.documentElement.style) ||
    // is firebug? http://stackoverflow.com/a/398120/376773
    (window.console && (console.firebug || (console.exception && console.table))) ||
    // is firefox >= v31?
    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
    (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
}

/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

exports.formatters.j = function(v) {
  return JSON.stringify(v);
};


/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */

function formatArgs() {
  var args = arguments;
  var useColors = this.useColors;

  args[0] = (useColors ? '%c' : '')
    + this.namespace
    + (useColors ? ' %c' : ' ')
    + args[0]
    + (useColors ? '%c ' : ' ')
    + '+' + exports.humanize(this.diff);

  if (!useColors) return args;

  var c = 'color: ' + this.color;
  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));

  // the final "%c" is somewhat tricky, because there could be other
  // arguments passed either before or after the %c, so we need to
  // figure out the correct index to insert the CSS into
  var index = 0;
  var lastC = 0;
  args[0].replace(/%[a-z%]/g, function(match) {
    if ('%%' === match) return;
    index++;
    if ('%c' === match) {
      // we only are interested in the *last* %c
      // (the user may have provided their own)
      lastC = index;
    }
  });

  args.splice(lastC, 0, c);
  return args;
}

/**
 * Invokes `console.log()` when available.
 * No-op when `console.log` is not a "function".
 *
 * @api public
 */

function log() {
  // this hackery is required for IE8/9, where
  // the `console.log` function doesn't have 'apply'
  return 'object' === typeof console
    && console.log
    && Function.prototype.apply.call(console.log, console, arguments);
}

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */

function save(namespaces) {
  try {
    if (null == namespaces) {
      exports.storage.removeItem('debug');
    } else {
      exports.storage.debug = namespaces;
    }
  } catch(e) {}
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */

function load() {
  var r;
  try {
    r = exports.storage.debug;
  } catch(e) {}
  return r;
}

/**
 * Enable namespaces listed in `localStorage.debug` initially.
 */

exports.enable(load());

/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */

function localstorage(){
  try {
    return window.localStorage;
  } catch (e) {}
}

},{"./debug":81}],81:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = debug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');

/**
 * The currently active debug mode names, and names to skip.
 */

exports.names = [];
exports.skips = [];

/**
 * Map of special "%n" handling functions, for the debug "format" argument.
 *
 * Valid key names are a single, lowercased letter, i.e. "n".
 */

exports.formatters = {};

/**
 * Previously assigned color.
 */

var prevColor = 0;

/**
 * Previous log timestamp.
 */

var prevTime;

/**
 * Select a color.
 *
 * @return {Number}
 * @api private
 */

function selectColor() {
  return exports.colors[prevColor++ % exports.colors.length];
}

/**
 * Create a debugger with the given `namespace`.
 *
 * @param {String} namespace
 * @return {Function}
 * @api public
 */

function debug(namespace) {

  // define the `disabled` version
  function disabled() {
  }
  disabled.enabled = false;

  // define the `enabled` version
  function enabled() {

    var self = enabled;

    // set `diff` timestamp
    var curr = +new Date();
    var ms = curr - (prevTime || curr);
    self.diff = ms;
    self.prev = prevTime;
    self.curr = curr;
    prevTime = curr;

    // add the `color` if not set
    if (null == self.useColors) self.useColors = exports.useColors();
    if (null == self.color && self.useColors) self.color = selectColor();

    var args = Array.prototype.slice.call(arguments);

    args[0] = exports.coerce(args[0]);

    if ('string' !== typeof args[0]) {
      // anything else let's inspect with %o
      args = ['%o'].concat(args);
    }

    // apply any `formatters` transformations
    var index = 0;
    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
      // if we encounter an escaped % then don't increase the array index
      if (match === '%%') return match;
      index++;
      var formatter = exports.formatters[format];
      if ('function' === typeof formatter) {
        var val = args[index];
        match = formatter.call(self, val);

        // now we need to remove `args[index]` since it's inlined in the `format`
        args.splice(index, 1);
        index--;
      }
      return match;
    });

    if ('function' === typeof exports.formatArgs) {
      args = exports.formatArgs.apply(self, args);
    }
    var logFn = enabled.log || exports.log || console.log.bind(console);
    logFn.apply(self, args);
  }
  enabled.enabled = true;

  var fn = exports.enabled(namespace) ? enabled : disabled;

  fn.namespace = namespace;

  return fn;
}

/**
 * Enables a debug mode by namespaces. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} namespaces
 * @api public
 */

function enable(namespaces) {
  exports.save(namespaces);

  var split = (namespaces || '').split(/[\s,]+/);
  var len = split.length;

  for (var i = 0; i < len; i++) {
    if (!split[i]) continue; // ignore empty strings
    namespaces = split[i].replace(/\*/g, '.*?');
    if (namespaces[0] === '-') {
      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
    } else {
      exports.names.push(new RegExp('^' + namespaces + '$'));
    }
  }
}

/**
 * Disable debug output.
 *
 * @api public
 */

function disable() {
  exports.enable('');
}

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

function enabled(name) {
  var i, len;
  for (i = 0, len = exports.skips.length; i < len; i++) {
    if (exports.skips[i].test(name)) {
      return false;
    }
  }
  for (i = 0, len = exports.names.length; i < len; i++) {
    if (exports.names[i].test(name)) {
      return true;
    }
  }
  return false;
}

/**
 * Coerce `val`.
 *
 * @param {Mixed} val
 * @return {Mixed}
 * @api private
 */

function coerce(val) {
  if (val instanceof Error) return val.stack || val.message;
  return val;
}

},{"ms":87}],82:[function(require,module,exports){
(function (process,global){
/*!
 * @overview es6-promise - a tiny implementation of Promises/A+.
 * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
 * @license   Licensed under MIT license
 *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
 * @version   3.1.2
 */

(function() {
    "use strict";
    function lib$es6$promise$utils$$objectOrFunction(x) {
      return typeof x === 'function' || (typeof x === 'object' && x !== null);
    }

    function lib$es6$promise$utils$$isFunction(x) {
      return typeof x === 'function';
    }

    function lib$es6$promise$utils$$isMaybeThenable(x) {
      return typeof x === 'object' && x !== null;
    }

    var lib$es6$promise$utils$$_isArray;
    if (!Array.isArray) {
      lib$es6$promise$utils$$_isArray = function (x) {
        return Object.prototype.toString.call(x) === '[object Array]';
      };
    } else {
      lib$es6$promise$utils$$_isArray = Array.isArray;
    }

    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
    var lib$es6$promise$asap$$len = 0;
    var lib$es6$promise$asap$$vertxNext;
    var lib$es6$promise$asap$$customSchedulerFn;

    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
      lib$es6$promise$asap$$len += 2;
      if (lib$es6$promise$asap$$len === 2) {
        // If len is 2, that means that we need to schedule an async flush.
        // If additional callbacks are queued before the queue is flushed, they
        // will be processed by this flush that we are scheduling.
        if (lib$es6$promise$asap$$customSchedulerFn) {
          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
        } else {
          lib$es6$promise$asap$$scheduleFlush();
        }
      }
    }

    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
    }

    function lib$es6$promise$asap$$setAsap(asapFn) {
      lib$es6$promise$asap$$asap = asapFn;
    }

    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';

    // test for web worker but not in IE10
    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
      typeof importScripts !== 'undefined' &&
      typeof MessageChannel !== 'undefined';

    // node
    function lib$es6$promise$asap$$useNextTick() {
      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
      // see https://github.com/cujojs/when/issues/410 for details
      return function() {
        process.nextTick(lib$es6$promise$asap$$flush);
      };
    }

    // vertx
    function lib$es6$promise$asap$$useVertxTimer() {
      return function() {
        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
      };
    }

    function lib$es6$promise$asap$$useMutationObserver() {
      var iterations = 0;
      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
      var node = document.createTextNode('');
      observer.observe(node, { characterData: true });

      return function() {
        node.data = (iterations = ++iterations % 2);
      };
    }

    // web worker
    function lib$es6$promise$asap$$useMessageChannel() {
      var channel = new MessageChannel();
      channel.port1.onmessage = lib$es6$promise$asap$$flush;
      return function () {
        channel.port2.postMessage(0);
      };
    }

    function lib$es6$promise$asap$$useSetTimeout() {
      return function() {
        setTimeout(lib$es6$promise$asap$$flush, 1);
      };
    }

    var lib$es6$promise$asap$$queue = new Array(1000);
    function lib$es6$promise$asap$$flush() {
      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
        var callback = lib$es6$promise$asap$$queue[i];
        var arg = lib$es6$promise$asap$$queue[i+1];

        callback(arg);

        lib$es6$promise$asap$$queue[i] = undefined;
        lib$es6$promise$asap$$queue[i+1] = undefined;
      }

      lib$es6$promise$asap$$len = 0;
    }

    function lib$es6$promise$asap$$attemptVertx() {
      try {
        var r = require;
        var vertx = r('vertx');
        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
        return lib$es6$promise$asap$$useVertxTimer();
      } catch(e) {
        return lib$es6$promise$asap$$useSetTimeout();
      }
    }

    var lib$es6$promise$asap$$scheduleFlush;
    // Decide what async method to use to triggering processing of queued callbacks:
    if (lib$es6$promise$asap$$isNode) {
      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
    } else if (lib$es6$promise$asap$$isWorker) {
      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
    } else {
      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
    }
    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
      var parent = this;
      var state = parent._state;

      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
        return this;
      }

      var child = new this.constructor(lib$es6$promise$$internal$$noop);
      var result = parent._result;

      if (state) {
        var callback = arguments[state - 1];
        lib$es6$promise$asap$$asap(function(){
          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
        });
      } else {
        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
      }

      return child;
    }
    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
    function lib$es6$promise$promise$resolve$$resolve(object) {
      /*jshint validthis:true */
      var Constructor = this;

      if (object && typeof object === 'object' && object.constructor === Constructor) {
        return object;
      }

      var promise = new Constructor(lib$es6$promise$$internal$$noop);
      lib$es6$promise$$internal$$resolve(promise, object);
      return promise;
    }
    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;

    function lib$es6$promise$$internal$$noop() {}

    var lib$es6$promise$$internal$$PENDING   = void 0;
    var lib$es6$promise$$internal$$FULFILLED = 1;
    var lib$es6$promise$$internal$$REJECTED  = 2;

    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();

    function lib$es6$promise$$internal$$selfFulfillment() {
      return new TypeError("You cannot resolve a promise with itself");
    }

    function lib$es6$promise$$internal$$cannotReturnOwn() {
      return new TypeError('A promises callback cannot return that same promise.');
    }

    function lib$es6$promise$$internal$$getThen(promise) {
      try {
        return promise.then;
      } catch(error) {
        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
        return lib$es6$promise$$internal$$GET_THEN_ERROR;
      }
    }

    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
      try {
        then.call(value, fulfillmentHandler, rejectionHandler);
      } catch(e) {
        return e;
      }
    }

    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
       lib$es6$promise$asap$$asap(function(promise) {
        var sealed = false;
        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
          if (sealed) { return; }
          sealed = true;
          if (thenable !== value) {
            lib$es6$promise$$internal$$resolve(promise, value);
          } else {
            lib$es6$promise$$internal$$fulfill(promise, value);
          }
        }, function(reason) {
          if (sealed) { return; }
          sealed = true;

          lib$es6$promise$$internal$$reject(promise, reason);
        }, 'Settle: ' + (promise._label || ' unknown promise'));

        if (!sealed && error) {
          sealed = true;
          lib$es6$promise$$internal$$reject(promise, error);
        }
      }, promise);
    }

    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
        lib$es6$promise$$internal$$reject(promise, thenable._result);
      } else {
        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
          lib$es6$promise$$internal$$resolve(promise, value);
        }, function(reason) {
          lib$es6$promise$$internal$$reject(promise, reason);
        });
      }
    }

    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
      if (maybeThenable.constructor === promise.constructor &&
          then === lib$es6$promise$then$$default &&
          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
      } else {
        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
        } else if (then === undefined) {
          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
        } else if (lib$es6$promise$utils$$isFunction(then)) {
          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
        } else {
          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
        }
      }
    }

    function lib$es6$promise$$internal$$resolve(promise, value) {
      if (promise === value) {
        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
      } else {
        lib$es6$promise$$internal$$fulfill(promise, value);
      }
    }

    function lib$es6$promise$$internal$$publishRejection(promise) {
      if (promise._onerror) {
        promise._onerror(promise._result);
      }

      lib$es6$promise$$internal$$publish(promise);
    }

    function lib$es6$promise$$internal$$fulfill(promise, value) {
      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }

      promise._result = value;
      promise._state = lib$es6$promise$$internal$$FULFILLED;

      if (promise._subscribers.length !== 0) {
        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
      }
    }

    function lib$es6$promise$$internal$$reject(promise, reason) {
      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
      promise._state = lib$es6$promise$$internal$$REJECTED;
      promise._result = reason;

      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
    }

    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
      var subscribers = parent._subscribers;
      var length = subscribers.length;

      parent._onerror = null;

      subscribers[length] = child;
      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;

      if (length === 0 && parent._state) {
        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
      }
    }

    function lib$es6$promise$$internal$$publish(promise) {
      var subscribers = promise._subscribers;
      var settled = promise._state;

      if (subscribers.length === 0) { return; }

      var child, callback, detail = promise._result;

      for (var i = 0; i < subscribers.length; i += 3) {
        child = subscribers[i];
        callback = subscribers[i + settled];

        if (child) {
          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
        } else {
          callback(detail);
        }
      }

      promise._subscribers.length = 0;
    }

    function lib$es6$promise$$internal$$ErrorObject() {
      this.error = null;
    }

    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();

    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
      try {
        return callback(detail);
      } catch(e) {
        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
      }
    }

    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
          value, error, succeeded, failed;

      if (hasCallback) {
        value = lib$es6$promise$$internal$$tryCatch(callback, detail);

        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
          failed = true;
          error = value.error;
          value = null;
        } else {
          succeeded = true;
        }

        if (promise === value) {
          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
          return;
        }

      } else {
        value = detail;
        succeeded = true;
      }

      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
        // noop
      } else if (hasCallback && succeeded) {
        lib$es6$promise$$internal$$resolve(promise, value);
      } else if (failed) {
        lib$es6$promise$$internal$$reject(promise, error);
      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
        lib$es6$promise$$internal$$fulfill(promise, value);
      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
        lib$es6$promise$$internal$$reject(promise, value);
      }
    }

    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
      try {
        resolver(function resolvePromise(value){
          lib$es6$promise$$internal$$resolve(promise, value);
        }, function rejectPromise(reason) {
          lib$es6$promise$$internal$$reject(promise, reason);
        });
      } catch(e) {
        lib$es6$promise$$internal$$reject(promise, e);
      }
    }

    function lib$es6$promise$promise$all$$all(entries) {
      return new lib$es6$promise$enumerator$$default(this, entries).promise;
    }
    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
    function lib$es6$promise$promise$race$$race(entries) {
      /*jshint validthis:true */
      var Constructor = this;

      var promise = new Constructor(lib$es6$promise$$internal$$noop);

      if (!lib$es6$promise$utils$$isArray(entries)) {
        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
        return promise;
      }

      var length = entries.length;

      function onFulfillment(value) {
        lib$es6$promise$$internal$$resolve(promise, value);
      }

      function onRejection(reason) {
        lib$es6$promise$$internal$$reject(promise, reason);
      }

      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
      }

      return promise;
    }
    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
    function lib$es6$promise$promise$reject$$reject(reason) {
      /*jshint validthis:true */
      var Constructor = this;
      var promise = new Constructor(lib$es6$promise$$internal$$noop);
      lib$es6$promise$$internal$$reject(promise, reason);
      return promise;
    }
    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;

    var lib$es6$promise$promise$$counter = 0;

    function lib$es6$promise$promise$$needsResolver() {
      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
    }

    function lib$es6$promise$promise$$needsNew() {
      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
    }

    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
    /**
      Promise objects represent the eventual result of an asynchronous operation. The
      primary way of interacting with a promise is through its `then` method, which
      registers callbacks to receive either a promise's eventual value or the reason
      why the promise cannot be fulfilled.

      Terminology
      -----------

      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
      - `thenable` is an object or function that defines a `then` method.
      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
      - `exception` is a value that is thrown using the throw statement.
      - `reason` is a value that indicates why a promise was rejected.
      - `settled` the final resting state of a promise, fulfilled or rejected.

      A promise can be in one of three states: pending, fulfilled, or rejected.

      Promises that are fulfilled have a fulfillment value and are in the fulfilled
      state.  Promises that are rejected have a rejection reason and are in the
      rejected state.  A fulfillment value is never a thenable.

      Promises can also be said to *resolve* a value.  If this value is also a
      promise, then the original promise's settled state will match the value's
      settled state.  So a promise that *resolves* a promise that rejects will
      itself reject, and a promise that *resolves* a promise that fulfills will
      itself fulfill.


      Basic Usage:
      ------------

      ```js
      var promise = new Promise(function(resolve, reject) {
        // on success
        resolve(value);

        // on failure
        reject(reason);
      });

      promise.then(function(value) {
        // on fulfillment
      }, function(reason) {
        // on rejection
      });
      ```

      Advanced Usage:
      ---------------

      Promises shine when abstracting away asynchronous interactions such as
      `XMLHttpRequest`s.

      ```js
      function getJSON(url) {
        return new Promise(function(resolve, reject){
          var xhr = new XMLHttpRequest();

          xhr.open('GET', url);
          xhr.onreadystatechange = handler;
          xhr.responseType = 'json';
          xhr.setRequestHeader('Accept', 'application/json');
          xhr.send();

          function handler() {
            if (this.readyState === this.DONE) {
              if (this.status === 200) {
                resolve(this.response);
              } else {
                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
              }
            }
          };
        });
      }

      getJSON('/posts.json').then(function(json) {
        // on fulfillment
      }, function(reason) {
        // on rejection
      });
      ```

      Unlike callbacks, promises are great composable primitives.

      ```js
      Promise.all([
        getJSON('/posts'),
        getJSON('/comments')
      ]).then(function(values){
        values[0] // => postsJSON
        values[1] // => commentsJSON

        return values;
      });
      ```

      @class Promise
      @param {function} resolver
      Useful for tooling.
      @constructor
    */
    function lib$es6$promise$promise$$Promise(resolver) {
      this._id = lib$es6$promise$promise$$counter++;
      this._state = undefined;
      this._result = undefined;
      this._subscribers = [];

      if (lib$es6$promise$$internal$$noop !== resolver) {
        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
      }
    }

    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;

    lib$es6$promise$promise$$Promise.prototype = {
      constructor: lib$es6$promise$promise$$Promise,

    /**
      The primary way of interacting with a promise is through its `then` method,
      which registers callbacks to receive either a promise's eventual value or the
      reason why the promise cannot be fulfilled.

      ```js
      findUser().then(function(user){
        // user is available
      }, function(reason){
        // user is unavailable, and you are given the reason why
      });
      ```

      Chaining
      --------

      The return value of `then` is itself a promise.  This second, 'downstream'
      promise is resolved with the return value of the first promise's fulfillment
      or rejection handler, or rejected if the handler throws an exception.

      ```js
      findUser().then(function (user) {
        return user.name;
      }, function (reason) {
        return 'default name';
      }).then(function (userName) {
        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
        // will be `'default name'`
      });

      findUser().then(function (user) {
        throw new Error('Found user, but still unhappy');
      }, function (reason) {
        throw new Error('`findUser` rejected and we're unhappy');
      }).then(function (value) {
        // never reached
      }, function (reason) {
        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
      });
      ```
      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.

      ```js
      findUser().then(function (user) {
        throw new PedagogicalException('Upstream error');
      }).then(function (value) {
        // never reached
      }).then(function (value) {
        // never reached
      }, function (reason) {
        // The `PedgagocialException` is propagated all the way down to here
      });
      ```

      Assimilation
      ------------

      Sometimes the value you want to propagate to a downstream promise can only be
      retrieved asynchronously. This can be achieved by returning a promise in the
      fulfillment or rejection handler. The downstream promise will then be pending
      until the returned promise is settled. This is called *assimilation*.

      ```js
      findUser().then(function (user) {
        return findCommentsByAuthor(user);
      }).then(function (comments) {
        // The user's comments are now available
      });
      ```

      If the assimliated promise rejects, then the downstream promise will also reject.

      ```js
      findUser().then(function (user) {
        return findCommentsByAuthor(user);
      }).then(function (comments) {
        // If `findCommentsByAuthor` fulfills, we'll have the value here
      }, function (reason) {
        // If `findCommentsByAuthor` rejects, we'll have the reason here
      });
      ```

      Simple Example
      --------------

      Synchronous Example

      ```javascript
      var result;

      try {
        result = findResult();
        // success
      } catch(reason) {
        // failure
      }
      ```

      Errback Example

      ```js
      findResult(function(result, err){
        if (err) {
          // failure
        } else {
          // success
        }
      });
      ```

      Promise Example;

      ```javascript
      findResult().then(function(result){
        // success
      }, function(reason){
        // failure
      });
      ```

      Advanced Example
      --------------

      Synchronous Example

      ```javascript
      var author, books;

      try {
        author = findAuthor();
        books  = findBooksByAuthor(author);
        // success
      } catch(reason) {
        // failure
      }
      ```

      Errback Example

      ```js

      function foundBooks(books) {

      }

      function failure(reason) {

      }

      findAuthor(function(author, err){
        if (err) {
          failure(err);
          // failure
        } else {
          try {
            findBoooksByAuthor(author, function(books, err) {
              if (err) {
                failure(err);
              } else {
                try {
                  foundBooks(books);
                } catch(reason) {
                  failure(reason);
                }
              }
            });
          } catch(error) {
            failure(err);
          }
          // success
        }
      });
      ```

      Promise Example;

      ```javascript
      findAuthor().
        then(findBooksByAuthor).
        then(function(books){
          // found books
      }).catch(function(reason){
        // something went wrong
      });
      ```

      @method then
      @param {Function} onFulfilled
      @param {Function} onRejected
      Useful for tooling.
      @return {Promise}
    */
      then: lib$es6$promise$then$$default,

    /**
      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
      as the catch block of a try/catch statement.

      ```js
      function findAuthor(){
        throw new Error('couldn't find that author');
      }

      // synchronous
      try {
        findAuthor();
      } catch(reason) {
        // something went wrong
      }

      // async with promises
      findAuthor().catch(function(reason){
        // something went wrong
      });
      ```

      @method catch
      @param {Function} onRejection
      Useful for tooling.
      @return {Promise}
    */
      'catch': function(onRejection) {
        return this.then(null, onRejection);
      }
    };
    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
      this._instanceConstructor = Constructor;
      this.promise = new Constructor(lib$es6$promise$$internal$$noop);

      if (Array.isArray(input)) {
        this._input     = input;
        this.length     = input.length;
        this._remaining = input.length;

        this._result = new Array(this.length);

        if (this.length === 0) {
          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
        } else {
          this.length = this.length || 0;
          this._enumerate();
          if (this._remaining === 0) {
            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
          }
        }
      } else {
        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
      }
    }

    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
      return new Error('Array Methods must be provided an Array');
    };

    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
      var length  = this.length;
      var input   = this._input;

      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
        this._eachEntry(input[i], i);
      }
    };

    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
      var c = this._instanceConstructor;
      var resolve = c.resolve;

      if (resolve === lib$es6$promise$promise$resolve$$default) {
        var then = lib$es6$promise$$internal$$getThen(entry);

        if (then === lib$es6$promise$then$$default &&
            entry._state !== lib$es6$promise$$internal$$PENDING) {
          this._settledAt(entry._state, i, entry._result);
        } else if (typeof then !== 'function') {
          this._remaining--;
          this._result[i] = entry;
        } else if (c === lib$es6$promise$promise$$default) {
          var promise = new c(lib$es6$promise$$internal$$noop);
          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
          this._willSettleAt(promise, i);
        } else {
          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
        }
      } else {
        this._willSettleAt(resolve(entry), i);
      }
    };

    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
      var promise = this.promise;

      if (promise._state === lib$es6$promise$$internal$$PENDING) {
        this._remaining--;

        if (state === lib$es6$promise$$internal$$REJECTED) {
          lib$es6$promise$$internal$$reject(promise, value);
        } else {
          this._result[i] = value;
        }
      }

      if (this._remaining === 0) {
        lib$es6$promise$$internal$$fulfill(promise, this._result);
      }
    };

    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
      var enumerator = this;

      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
      }, function(reason) {
        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
      });
    };
    function lib$es6$promise$polyfill$$polyfill() {
      var local;

      if (typeof global !== 'undefined') {
          local = global;
      } else if (typeof self !== 'undefined') {
          local = self;
      } else {
          try {
              local = Function('return this')();
          } catch (e) {
              throw new Error('polyfill failed because global object is unavailable in this environment');
          }
      }

      var P = local.Promise;

      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
        return;
      }

      local.Promise = lib$es6$promise$promise$$default;
    }
    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;

    var lib$es6$promise$umd$$ES6Promise = {
      'Promise': lib$es6$promise$promise$$default,
      'polyfill': lib$es6$promise$polyfill$$default
    };

    /* global define:true module:true window: true */
    if (typeof define === 'function' && define['amd']) {
      define(function() { return lib$es6$promise$umd$$ES6Promise; });
    } else if (typeof module !== 'undefined' && module['exports']) {
      module['exports'] = lib$es6$promise$umd$$ES6Promise;
    } else if (typeof this !== 'undefined') {
      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
    }

    lib$es6$promise$polyfill$$default();
}).call(this);


}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":118}],83:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],84:[function(require,module,exports){

/**
 * isArray
 */

var isArray = Array.isArray;

/**
 * toString
 */

var str = Object.prototype.toString;

/**
 * Whether or not the given `val`
 * is an array.
 *
 * example:
 *
 *        isArray([]);
 *        // > true
 *        isArray(arguments);
 *        // > false
 *        isArray('');
 *        // > false
 *
 * @param {mixed} val
 * @return {bool}
 */

module.exports = isArray || function (val) {
  return !! val && '[object Array]' == str.call(val);
};

},{}],85:[function(require,module,exports){
/*
 * $Id: base64.js,v 2.15 2014/04/05 12:58:57 dankogai Exp dankogai $
 *
 *  Licensed under the MIT license.
 *    http://opensource.org/licenses/mit-license
 *
 *  References:
 *    http://en.wikipedia.org/wiki/Base64
 */

(function(global) {
    'use strict';
    // existing version for noConflict()
    var _Base64 = global.Base64;
    var version = "2.1.9";
    // if node.js, we use Buffer
    var buffer;
    if (typeof module !== 'undefined' && module.exports) {
        try {
            buffer = require('buffer').Buffer;
        } catch (err) {}
    }
    // constants
    var b64chars
        = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    var b64tab = function(bin) {
        var t = {};
        for (var i = 0, l = bin.length; i < l; i++) t[bin.charAt(i)] = i;
        return t;
    }(b64chars);
    var fromCharCode = String.fromCharCode;
    // encoder stuff
    var cb_utob = function(c) {
        if (c.length < 2) {
            var cc = c.charCodeAt(0);
            return cc < 0x80 ? c
                : cc < 0x800 ? (fromCharCode(0xc0 | (cc >>> 6))
                                + fromCharCode(0x80 | (cc & 0x3f)))
                : (fromCharCode(0xe0 | ((cc >>> 12) & 0x0f))
                   + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                   + fromCharCode(0x80 | ( cc         & 0x3f)));
        } else {
            var cc = 0x10000
                + (c.charCodeAt(0) - 0xD800) * 0x400
                + (c.charCodeAt(1) - 0xDC00);
            return (fromCharCode(0xf0 | ((cc >>> 18) & 0x07))
                    + fromCharCode(0x80 | ((cc >>> 12) & 0x3f))
                    + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                    + fromCharCode(0x80 | ( cc         & 0x3f)));
        }
    };
    var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
    var utob = function(u) {
        return u.replace(re_utob, cb_utob);
    };
    var cb_encode = function(ccc) {
        var padlen = [0, 2, 1][ccc.length % 3],
        ord = ccc.charCodeAt(0) << 16
            | ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8)
            | ((ccc.length > 2 ? ccc.charCodeAt(2) : 0)),
        chars = [
            b64chars.charAt( ord >>> 18),
            b64chars.charAt((ord >>> 12) & 63),
            padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
            padlen >= 1 ? '=' : b64chars.charAt(ord & 63)
        ];
        return chars.join('');
    };
    var btoa = global.btoa ? function(b) {
        return global.btoa(b);
    } : function(b) {
        return b.replace(/[\s\S]{1,3}/g, cb_encode);
    };
    var _encode = buffer ? function (u) {
        return (u.constructor === buffer.constructor ? u : new buffer(u))
        .toString('base64')
    }
    : function (u) { return btoa(utob(u)) }
    ;
    var encode = function(u, urisafe) {
        return !urisafe
            ? _encode(String(u))
            : _encode(String(u)).replace(/[+\/]/g, function(m0) {
                return m0 == '+' ? '-' : '_';
            }).replace(/=/g, '');
    };
    var encodeURI = function(u) { return encode(u, true) };
    // decoder stuff
    var re_btou = new RegExp([
        '[\xC0-\xDF][\x80-\xBF]',
        '[\xE0-\xEF][\x80-\xBF]{2}',
        '[\xF0-\xF7][\x80-\xBF]{3}'
    ].join('|'), 'g');
    var cb_btou = function(cccc) {
        switch(cccc.length) {
        case 4:
            var cp = ((0x07 & cccc.charCodeAt(0)) << 18)
                |    ((0x3f & cccc.charCodeAt(1)) << 12)
                |    ((0x3f & cccc.charCodeAt(2)) <<  6)
                |     (0x3f & cccc.charCodeAt(3)),
            offset = cp - 0x10000;
            return (fromCharCode((offset  >>> 10) + 0xD800)
                    + fromCharCode((offset & 0x3FF) + 0xDC00));
        case 3:
            return fromCharCode(
                ((0x0f & cccc.charCodeAt(0)) << 12)
                    | ((0x3f & cccc.charCodeAt(1)) << 6)
                    |  (0x3f & cccc.charCodeAt(2))
            );
        default:
            return  fromCharCode(
                ((0x1f & cccc.charCodeAt(0)) << 6)
                    |  (0x3f & cccc.charCodeAt(1))
            );
        }
    };
    var btou = function(b) {
        return b.replace(re_btou, cb_btou);
    };
    var cb_decode = function(cccc) {
        var len = cccc.length,
        padlen = len % 4,
        n = (len > 0 ? b64tab[cccc.charAt(0)] << 18 : 0)
            | (len > 1 ? b64tab[cccc.charAt(1)] << 12 : 0)
            | (len > 2 ? b64tab[cccc.charAt(2)] <<  6 : 0)
            | (len > 3 ? b64tab[cccc.charAt(3)]       : 0),
        chars = [
            fromCharCode( n >>> 16),
            fromCharCode((n >>>  8) & 0xff),
            fromCharCode( n         & 0xff)
        ];
        chars.length -= [0, 0, 2, 1][padlen];
        return chars.join('');
    };
    var atob = global.atob ? function(a) {
        return global.atob(a);
    } : function(a){
        return a.replace(/[\s\S]{1,4}/g, cb_decode);
    };
    var _decode = buffer ? function(a) {
        return (a.constructor === buffer.constructor
                ? a : new buffer(a, 'base64')).toString();
    }
    : function(a) { return btou(atob(a)) };
    var decode = function(a){
        return _decode(
            String(a).replace(/[-_]/g, function(m0) { return m0 == '-' ? '+' : '/' })
                .replace(/[^A-Za-z0-9\+\/]/g, '')
        );
    };
    var noConflict = function() {
        var Base64 = global.Base64;
        global.Base64 = _Base64;
        return Base64;
    };
    // export Base64
    global.Base64 = {
        VERSION: version,
        atob: atob,
        btoa: btoa,
        fromBase64: decode,
        toBase64: encode,
        utob: utob,
        encode: encode,
        encodeURI: encodeURI,
        btou: btou,
        decode: decode,
        noConflict: noConflict
    };
    // if ES5 is available, make Base64.extendString() available
    if (typeof Object.defineProperty === 'function') {
        var noEnum = function(v){
            return {value:v,enumerable:false,writable:true,configurable:true};
        };
        global.Base64.extendString = function () {
            Object.defineProperty(
                String.prototype, 'fromBase64', noEnum(function () {
                    return decode(this)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64', noEnum(function (urisafe) {
                    return encode(this, urisafe)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64URI', noEnum(function () {
                    return encode(this, true)
                }));
        };
    }
    // that's it!
    if (global['Meteor']) {
       Base64 = global.Base64; // for normal export in Meteor.js
    }
})(this);

},{"buffer":38}],86:[function(require,module,exports){
(function (__dirname){
var fs = require('fs'),
    path = require('path'),
    existsSync = require('fs').existsSync || require('path').existsSync;

// Load all stated versions into the module exports
module.exports.version = {};

var refs = [
 '2.0.0',
 '2.0.1',
 '2.0.2',
 '2.1.0',
 '2.1.1',
 '2.2.0',
 '2.3.0',
 '3.0.0'
];

refs.map(function(version) {
    module.exports.version[version] = require(path.join(__dirname, version, 'reference.json'));
    var ds_path = path.join(__dirname, version, 'datasources.json');
    if (existsSync(ds_path)) {
        module.exports.version[version].datasources = require(ds_path).datasources;
    }
});

}).call(this,"/node_modules/mapnik-reference")
},{"fs":37,"path":88}],87:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} options
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options){
  options = options || {};
  if ('string' == typeof val) return parse(val);
  return options.long
    ? long(val)
    : short(val);
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = '' + str;
  if (str.length > 10000) return;
  var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);
  if (!match) return;
  var n = parseFloat(match[1]);
  var type = (match[2] || 'ms').toLowerCase();
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function short(ms) {
  if (ms >= d) return Math.round(ms / d) + 'd';
  if (ms >= h) return Math.round(ms / h) + 'h';
  if (ms >= m) return Math.round(ms / m) + 'm';
  if (ms >= s) return Math.round(ms / s) + 's';
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function long(ms) {
  return plural(ms, d, 'day')
    || plural(ms, h, 'hour')
    || plural(ms, m, 'minute')
    || plural(ms, s, 'second')
    || ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, n, name) {
  if (ms < n) return;
  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
  return Math.ceil(ms / n) + ' ' + name + 's';
}

},{}],88:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// Split a filename into [root, dir, basename, ext], unix version
// 'root' is just a slash, or nothing.
var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
};

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
};


exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};


exports.extname = function(path) {
  return splitPath(path)[3];
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":118}],89:[function(require,module,exports){
var parse = require('./parse');
var walk = require('./walk');
var stringify = require('./stringify');

function ValueParser(value) {
    if (this instanceof ValueParser) {
        this.nodes = parse(value);
        return this;
    }
    return new ValueParser(value);
}

ValueParser.prototype.toString = function () {
    return Array.isArray(this.nodes) ? stringify(this.nodes) : '';
};

ValueParser.prototype.walk = function (cb, bubble) {
    walk(this.nodes, cb, bubble);
    return this;
};

ValueParser.unit = require('./unit');

ValueParser.walk = walk;

ValueParser.stringify = stringify;

module.exports = ValueParser;

},{"./parse":90,"./stringify":91,"./unit":92,"./walk":93}],90:[function(require,module,exports){
var openParentheses = '('.charCodeAt(0);
var closeParentheses = ')'.charCodeAt(0);
var singleQuote = '\''.charCodeAt(0);
var doubleQuote = '"'.charCodeAt(0);
var backslash = '\\'.charCodeAt(0);
var slash = '/'.charCodeAt(0);
var comma = ','.charCodeAt(0);
var colon = ':'.charCodeAt(0);
var star = '*'.charCodeAt(0);

module.exports = function (input) {
    var tokens = [];
    var value = input;

    var next, quote, prev, token, escape, escapePos, whitespacePos;
    var pos = 0;
    var code = value.charCodeAt(pos);
    var max = value.length;
    var stack = [{ nodes: tokens }];
    var balanced = 0;
    var parent;

    var name = '';
    var before = '';
    var after = '';

    while (pos < max) {
        // Whitespaces
        if (code <= 32) {
            next = pos;
            do {
                next += 1;
                code = value.charCodeAt(next);
            } while (code <= 32);
            token = value.slice(pos, next);

            prev = tokens[tokens.length - 1];
            if (code === closeParentheses && balanced) {
                after = token;
            } else if (prev && prev.type === 'div') {
                prev.after = token;
            } else if (code === comma || code === colon || code === slash && value.charCodeAt(next + 1) !== star) {
                before = token;
            } else {
                tokens.push({
                    type: 'space',
                    sourceIndex: pos,
                    value: token
                });
            }

            pos = next;

        // Quotes
        } else if (code === singleQuote || code === doubleQuote) {
            next = pos;
            quote = code === singleQuote ? '\'' : '"';
            token = {
                type: 'string',
                sourceIndex: pos,
                quote: quote
            };
            do {
                escape = false;
                next = value.indexOf(quote, next + 1);
                if (~next) {
                    escapePos = next;
                    while (value.charCodeAt(escapePos - 1) === backslash) {
                        escapePos -= 1;
                        escape = !escape;
                    }
                } else {
                    value += quote;
                    next = value.length - 1;
                    token.unclosed = true;
                }
            } while (escape);
            token.value = value.slice(pos + 1, next);

            tokens.push(token);
            pos = next + 1;
            code = value.charCodeAt(pos);

        // Comments
        } else if (code === slash && value.charCodeAt(pos + 1) === star) {
            token = {
                type: 'comment',
                sourceIndex: pos
            };

            next = value.indexOf('*/', pos);
            if (next === -1) {
                token.unclosed = true;
                next = value.length;
            }

            token.value = value.slice(pos + 2, next);
            tokens.push(token);

            pos = next + 2;
            code = value.charCodeAt(pos);

        // Dividers
        } else if (code === slash || code === comma || code === colon) {
            token = value[pos];

            tokens.push({
                type: 'div',
                sourceIndex: pos - before.length,
                value: token,
                before: before,
                after: ''
            });
            before = '';

            pos += 1;
            code = value.charCodeAt(pos);

        // Open parentheses
        } else if (openParentheses === code) {
            // Whitespaces after open parentheses
            next = pos;
            do {
                next += 1;
                code = value.charCodeAt(next);
            } while (code <= 32);
            token = {
                type: 'function',
                sourceIndex: pos - name.length,
                value: name,
                before: value.slice(pos + 1, next)
            };
            pos = next;

            if (name === 'url' && code !== singleQuote && code !== doubleQuote) {
                next -= 1;
                do {
                    escape = false;
                    next = value.indexOf(')', next + 1);
                    if (~next) {
                        escapePos = next;
                        while (value.charCodeAt(escapePos - 1) === backslash) {
                            escapePos -= 1;
                            escape = !escape;
                        }
                    } else {
                        value += ')';
                        next = value.length - 1;
                        token.unclosed = true;
                    }
                } while (escape);
                // Whitespaces before closed
                whitespacePos = next;
                do {
                    whitespacePos -= 1;
                    code = value.charCodeAt(whitespacePos);
                } while (code <= 32);
                if (pos !== whitespacePos + 1) {
                    token.nodes = [{
                        type: 'word',
                        sourceIndex: pos,
                        value: value.slice(pos, whitespacePos + 1)
                    }];
                } else {
                    token.nodes = [];
                }
                if (token.unclosed && whitespacePos + 1 !== next) {
                    token.after = '';
                    token.nodes.push({
                        type: 'space',
                        sourceIndex: whitespacePos + 1,
                        value: value.slice(whitespacePos + 1, next)
                    });
                } else {
                    token.after = value.slice(whitespacePos + 1, next);
                }
                pos = next + 1;
                code = value.charCodeAt(pos);
                tokens.push(token);
            } else {
                balanced += 1;
                token.after = '';
                tokens.push(token);
                stack.push(token);
                tokens = token.nodes = [];
                parent = token;
            }
            name = '';

        // Close parentheses
        } else if (closeParentheses === code && balanced) {
            pos += 1;
            code = value.charCodeAt(pos);

            parent.after = after;
            after = '';
            balanced -= 1;
            stack.pop();
            parent = stack[balanced];
            tokens = parent.nodes;

        // Words
        } else {
            next = pos;
            do {
                if (code === backslash) {
                    next += 1;
                }
                next += 1;
                code = value.charCodeAt(next);
            } while (next < max && !(
                code <= 32 ||
                code === singleQuote ||
                code === doubleQuote ||
                code === comma ||
                code === colon ||
                code === slash ||
                code === openParentheses ||
                code === closeParentheses && balanced
            ));
            token = value.slice(pos, next);

            if (openParentheses === code) {
                name = token;
            } else {
                tokens.push({
                    type: 'word',
                    sourceIndex: pos,
                    value: token
                });
            }

            pos = next;
        }
    }

    for (pos = stack.length - 1; pos; pos -= 1) {
        stack[pos].unclosed = true;
    }

    return stack[0].nodes;
};

},{}],91:[function(require,module,exports){
function stringifyNode(node, custom) {
    var type = node.type;
    var value = node.value;
    var buf;
    var customResult;

    if (custom && (customResult = custom(node)) !== undefined) {
        return customResult;
    } else if (type === 'word' || type === 'space') {
        return value;
    } else if (type === 'string') {
        buf = node.quote || '';
        return buf + value + (node.unclosed ? '' : buf);
    } else if (type === 'comment') {
        return '/*' + value + (node.unclosed ? '' : '*/');
    } else if (type === 'div') {
        return (node.before || '') + value + (node.after || '');
    } else if (Array.isArray(node.nodes)) {
        buf = stringify(node.nodes);
        if (type !== 'function') {
            return buf;
        }
        return value + '(' + (node.before || '') + buf + (node.after || '') + (node.unclosed ? '' : ')');
    }
    return value;
}

function stringify(nodes, custom) {
    var result, i;

    if (Array.isArray(nodes)) {
        result = '';
        for (i = nodes.length - 1; ~i; i -= 1) {
            result = stringifyNode(nodes[i], custom) + result;
        }
        return result;
    }
    return stringifyNode(nodes, custom);
}

module.exports = stringify;

},{}],92:[function(require,module,exports){
var minus = '-'.charCodeAt(0);
var plus  = '+'.charCodeAt(0);
var dot   = '.'.charCodeAt(0);

module.exports = function (value) {
    var pos = 0;
    var length = value.length;
    var dotted = false;
    var containsNumber = false;
    var code;
    var number = '';

    while (pos < length) {
        code = value.charCodeAt(pos);

        if (code >= 48 && code <= 57) {
            number += value[pos];
            containsNumber = true;
        } else if (code === dot) {
            if (dotted) {
                break;
            }
            dotted = true;
            number += value[pos];
        } else if (code === plus || code === minus) {
            if (pos !== 0) {
                break;
            }
            number += value[pos];
        } else {
            break;
        }

        pos += 1;
    }

    return containsNumber ? {
        number: number,
        unit: value.slice(pos)
    } : false;
};

},{}],93:[function(require,module,exports){
module.exports = function walk(nodes, cb, bubble) {
    var i, max, node, result;

    for (i = 0, max = nodes.length; i < max; i += 1) {
        node = nodes[i];
        if (!bubble) {
            result = cb(node, i, nodes);
        }

        if (result !== false && node.type === 'function' && Array.isArray(node.nodes)) {
            walk(node.nodes, cb, bubble);
        }

        if (bubble) {
            cb(node, i, nodes);
        }
    }
};

},{}],94:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _container = require('./container');

var _container2 = _interopRequireDefault(_container);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var AtRule = function (_Container) {
    _inherits(AtRule, _Container);

    function AtRule(defaults) {
        _classCallCheck(this, AtRule);

        var _this = _possibleConstructorReturn(this, _Container.call(this, defaults));

        _this.type = 'atrule';
        return _this;
    }

    AtRule.prototype.append = function append() {
        var _Container$prototype$;

        if (!this.nodes) this.nodes = [];

        for (var _len = arguments.length, children = Array(_len), _key = 0; _key < _len; _key++) {
            children[_key] = arguments[_key];
        }

        return (_Container$prototype$ = _Container.prototype.append).call.apply(_Container$prototype$, [this].concat(children));
    };

    AtRule.prototype.prepend = function prepend() {
        var _Container$prototype$2;

        if (!this.nodes) this.nodes = [];

        for (var _len2 = arguments.length, children = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
            children[_key2] = arguments[_key2];
        }

        return (_Container$prototype$2 = _Container.prototype.prepend).call.apply(_Container$prototype$2, [this].concat(children));
    };

    /* istanbul ignore next */


    _createClass(AtRule, [{
        key: 'afterName',
        get: function get() {
            (0, _warnOnce2.default)('AtRule#afterName was deprecated. Use AtRule#raws.afterName');
            return this.raws.afterName;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('AtRule#afterName was deprecated. Use AtRule#raws.afterName');
            this.raws.afterName = val;
        }

        /* istanbul ignore next */

    }, {
        key: '_params',
        get: function get() {
            (0, _warnOnce2.default)('AtRule#_params was deprecated. Use AtRule#raws.params');
            return this.raws.params;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('AtRule#_params was deprecated. Use AtRule#raws.params');
            this.raws.params = val;
        }
    }]);

    return AtRule;
}(_container2.default);

exports.default = AtRule;
module.exports = exports['default'];
},{"./container":96,"./warn-once":116}],95:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

var _node = require('./node');

var _node2 = _interopRequireDefault(_node);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Comment = function (_Node) {
    _inherits(Comment, _Node);

    function Comment(defaults) {
        _classCallCheck(this, Comment);

        var _this = _possibleConstructorReturn(this, _Node.call(this, defaults));

        _this.type = 'comment';
        return _this;
    }

    /* istanbul ignore next */


    _createClass(Comment, [{
        key: 'left',
        get: function get() {
            (0, _warnOnce2.default)('Comment#left was deprecated. Use Comment#raws.left');
            return this.raws.left;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Comment#left was deprecated. Use Comment#raws.left');
            this.raws.left = val;
        }

        /* istanbul ignore next */

    }, {
        key: 'right',
        get: function get() {
            (0, _warnOnce2.default)('Comment#right was deprecated. Use Comment#raws.right');
            return this.raws.right;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Comment#right was deprecated. Use Comment#raws.right');
            this.raws.right = val;
        }
    }]);

    return Comment;
}(_node2.default);

exports.default = Comment;
module.exports = exports['default'];
},{"./node":103,"./warn-once":116}],96:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _declaration = require('./declaration');

var _declaration2 = _interopRequireDefault(_declaration);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

var _comment = require('./comment');

var _comment2 = _interopRequireDefault(_comment);

var _node = require('./node');

var _node2 = _interopRequireDefault(_node);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Container = function (_Node) {
    _inherits(Container, _Node);

    function Container() {
        _classCallCheck(this, Container);

        return _possibleConstructorReturn(this, _Node.apply(this, arguments));
    }

    Container.prototype.push = function push(child) {
        child.parent = this;
        this.nodes.push(child);
        return this;
    };

    Container.prototype.each = function each(callback) {
        if (!this.lastEach) this.lastEach = 0;
        if (!this.indexes) this.indexes = {};

        this.lastEach += 1;
        var id = this.lastEach;
        this.indexes[id] = 0;

        if (!this.nodes) return undefined;

        var index = undefined,
            result = undefined;
        while (this.indexes[id] < this.nodes.length) {
            index = this.indexes[id];
            result = callback(this.nodes[index], index);
            if (result === false) break;

            this.indexes[id] += 1;
        }

        delete this.indexes[id];

        return result;
    };

    Container.prototype.walk = function walk(callback) {
        return this.each(function (child, i) {
            var result = callback(child, i);
            if (result !== false && child.walk) {
                result = child.walk(callback);
            }
            return result;
        });
    };

    Container.prototype.walkDecls = function walkDecls(prop, callback) {
        if (!callback) {
            callback = prop;
            return this.walk(function (child, i) {
                if (child.type === 'decl') {
                    return callback(child, i);
                }
            });
        } else if (prop instanceof RegExp) {
            return this.walk(function (child, i) {
                if (child.type === 'decl' && prop.test(child.prop)) {
                    return callback(child, i);
                }
            });
        } else {
            return this.walk(function (child, i) {
                if (child.type === 'decl' && child.prop === prop) {
                    return callback(child, i);
                }
            });
        }
    };

    Container.prototype.walkRules = function walkRules(selector, callback) {
        if (!callback) {
            callback = selector;

            return this.walk(function (child, i) {
                if (child.type === 'rule') {
                    return callback(child, i);
                }
            });
        } else if (selector instanceof RegExp) {
            return this.walk(function (child, i) {
                if (child.type === 'rule' && selector.test(child.selector)) {
                    return callback(child, i);
                }
            });
        } else {
            return this.walk(function (child, i) {
                if (child.type === 'rule' && child.selector === selector) {
                    return callback(child, i);
                }
            });
        }
    };

    Container.prototype.walkAtRules = function walkAtRules(name, callback) {
        if (!callback) {
            callback = name;
            return this.walk(function (child, i) {
                if (child.type === 'atrule') {
                    return callback(child, i);
                }
            });
        } else if (name instanceof RegExp) {
            return this.walk(function (child, i) {
                if (child.type === 'atrule' && name.test(child.name)) {
                    return callback(child, i);
                }
            });
        } else {
            return this.walk(function (child, i) {
                if (child.type === 'atrule' && child.name === name) {
                    return callback(child, i);
                }
            });
        }
    };

    Container.prototype.walkComments = function walkComments(callback) {
        return this.walk(function (child, i) {
            if (child.type === 'comment') {
                return callback(child, i);
            }
        });
    };

    Container.prototype.append = function append() {
        for (var _len = arguments.length, children = Array(_len), _key = 0; _key < _len; _key++) {
            children[_key] = arguments[_key];
        }

        for (var _iterator = children, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
            var _ref;

            if (_isArray) {
                if (_i >= _iterator.length) break;
                _ref = _iterator[_i++];
            } else {
                _i = _iterator.next();
                if (_i.done) break;
                _ref = _i.value;
            }

            var child = _ref;

            var nodes = this.normalize(child, this.last);
            for (var _iterator2 = nodes, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
                var _ref2;

                if (_isArray2) {
                    if (_i2 >= _iterator2.length) break;
                    _ref2 = _iterator2[_i2++];
                } else {
                    _i2 = _iterator2.next();
                    if (_i2.done) break;
                    _ref2 = _i2.value;
                }

                var node = _ref2;
                this.nodes.push(node);
            }
        }
        return this;
    };

    Container.prototype.prepend = function prepend() {
        for (var _len2 = arguments.length, children = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
            children[_key2] = arguments[_key2];
        }

        children = children.reverse();
        for (var _iterator3 = children, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
            var _ref3;

            if (_isArray3) {
                if (_i3 >= _iterator3.length) break;
                _ref3 = _iterator3[_i3++];
            } else {
                _i3 = _iterator3.next();
                if (_i3.done) break;
                _ref3 = _i3.value;
            }

            var child = _ref3;

            var nodes = this.normalize(child, this.first, 'prepend').reverse();
            for (var _iterator4 = nodes, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator]();;) {
                var _ref4;

                if (_isArray4) {
                    if (_i4 >= _iterator4.length) break;
                    _ref4 = _iterator4[_i4++];
                } else {
                    _i4 = _iterator4.next();
                    if (_i4.done) break;
                    _ref4 = _i4.value;
                }

                var node = _ref4;
                this.nodes.unshift(node);
            }for (var id in this.indexes) {
                this.indexes[id] = this.indexes[id] + nodes.length;
            }
        }
        return this;
    };

    Container.prototype.cleanRaws = function cleanRaws(keepBetween) {
        _Node.prototype.cleanRaws.call(this, keepBetween);
        if (this.nodes) {
            for (var _iterator5 = this.nodes, _isArray5 = Array.isArray(_iterator5), _i5 = 0, _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator]();;) {
                var _ref5;

                if (_isArray5) {
                    if (_i5 >= _iterator5.length) break;
                    _ref5 = _iterator5[_i5++];
                } else {
                    _i5 = _iterator5.next();
                    if (_i5.done) break;
                    _ref5 = _i5.value;
                }

                var node = _ref5;
                node.cleanRaws(keepBetween);
            }
        }
    };

    Container.prototype.insertBefore = function insertBefore(exist, add) {
        exist = this.index(exist);

        var type = exist === 0 ? 'prepend' : false;
        var nodes = this.normalize(add, this.nodes[exist], type).reverse();
        for (var _iterator6 = nodes, _isArray6 = Array.isArray(_iterator6), _i6 = 0, _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator]();;) {
            var _ref6;

            if (_isArray6) {
                if (_i6 >= _iterator6.length) break;
                _ref6 = _iterator6[_i6++];
            } else {
                _i6 = _iterator6.next();
                if (_i6.done) break;
                _ref6 = _i6.value;
            }

            var node = _ref6;
            this.nodes.splice(exist, 0, node);
        }var index = undefined;
        for (var id in this.indexes) {
            index = this.indexes[id];
            if (exist <= index) {
                this.indexes[id] = index + nodes.length;
            }
        }

        return this;
    };

    Container.prototype.insertAfter = function insertAfter(exist, add) {
        exist = this.index(exist);

        var nodes = this.normalize(add, this.nodes[exist]).reverse();
        for (var _iterator7 = nodes, _isArray7 = Array.isArray(_iterator7), _i7 = 0, _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator]();;) {
            var _ref7;

            if (_isArray7) {
                if (_i7 >= _iterator7.length) break;
                _ref7 = _iterator7[_i7++];
            } else {
                _i7 = _iterator7.next();
                if (_i7.done) break;
                _ref7 = _i7.value;
            }

            var node = _ref7;
            this.nodes.splice(exist + 1, 0, node);
        }var index = undefined;
        for (var id in this.indexes) {
            index = this.indexes[id];
            if (exist < index) {
                this.indexes[id] = index + nodes.length;
            }
        }

        return this;
    };

    Container.prototype.remove = function remove(child) {
        /* istanbul ignore if */
        if (typeof child !== 'undefined') {
            (0, _warnOnce2.default)('Container#remove is deprecated. ' + 'Use Container#removeChild');
            this.removeChild(child);
        } else {
            _Node.prototype.remove.call(this);
        }
        return this;
    };

    Container.prototype.removeChild = function removeChild(child) {
        child = this.index(child);
        this.nodes[child].parent = undefined;
        this.nodes.splice(child, 1);

        var index = undefined;
        for (var id in this.indexes) {
            index = this.indexes[id];
            if (index >= child) {
                this.indexes[id] = index - 1;
            }
        }

        return this;
    };

    Container.prototype.removeAll = function removeAll() {
        for (var _iterator8 = this.nodes, _isArray8 = Array.isArray(_iterator8), _i8 = 0, _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator]();;) {
            var _ref8;

            if (_isArray8) {
                if (_i8 >= _iterator8.length) break;
                _ref8 = _iterator8[_i8++];
            } else {
                _i8 = _iterator8.next();
                if (_i8.done) break;
                _ref8 = _i8.value;
            }

            var node = _ref8;
            node.parent = undefined;
        }this.nodes = [];
        return this;
    };

    Container.prototype.replaceValues = function replaceValues(regexp, opts, callback) {
        if (!callback) {
            callback = opts;
            opts = {};
        }

        this.walkDecls(function (decl) {
            if (opts.props && opts.props.indexOf(decl.prop) === -1) return;
            if (opts.fast && decl.value.indexOf(opts.fast) === -1) return;

            decl.value = decl.value.replace(regexp, callback);
        });

        return this;
    };

    Container.prototype.every = function every(condition) {
        return this.nodes.every(condition);
    };

    Container.prototype.some = function some(condition) {
        return this.nodes.some(condition);
    };

    Container.prototype.index = function index(child) {
        if (typeof child === 'number') {
            return child;
        } else {
            return this.nodes.indexOf(child);
        }
    };

    Container.prototype.normalize = function normalize(nodes, sample) {
        var _this2 = this;

        if (typeof nodes === 'string') {
            var parse = require('./parse');
            nodes = parse(nodes).nodes;
        } else if (!Array.isArray(nodes)) {
            if (nodes.type === 'root') {
                nodes = nodes.nodes;
            } else if (nodes.type) {
                nodes = [nodes];
            } else if (nodes.prop) {
                if (typeof nodes.value === 'undefined') {
                    throw new Error('Value field is missed in node creation');
                }
                nodes = [new _declaration2.default(nodes)];
            } else if (nodes.selector) {
                var Rule = require('./rule');
                nodes = [new Rule(nodes)];
            } else if (nodes.name) {
                var AtRule = require('./at-rule');
                nodes = [new AtRule(nodes)];
            } else if (nodes.text) {
                nodes = [new _comment2.default(nodes)];
            } else {
                throw new Error('Unknown node type in node creation');
            }
        }

        var processed = nodes.map(function (i) {
            /* istanbul ignore if */
            if (typeof i.raws === 'undefined') i = _this2.rebuild(i);

            if (i.parent) i = i.clone();
            if (typeof i.raws.before === 'undefined') {
                if (sample && typeof sample.raws.before !== 'undefined') {
                    i.raws.before = sample.raws.before.replace(/[^\s]/g, '');
                }
            }
            i.parent = _this2;
            return i;
        });

        return processed;
    };

    /* istanbul ignore next */


    Container.prototype.rebuild = function rebuild(node, parent) {
        var _this3 = this;

        var fix = undefined;
        if (node.type === 'root') {
            var Root = require('./root');
            fix = new Root();
        } else if (node.type === 'atrule') {
            var AtRule = require('./at-rule');
            fix = new AtRule();
        } else if (node.type === 'rule') {
            var Rule = require('./rule');
            fix = new Rule();
        } else if (node.type === 'decl') {
            fix = new _declaration2.default();
        } else if (node.type === 'comment') {
            fix = new _comment2.default();
        }

        for (var i in node) {
            if (i === 'nodes') {
                fix.nodes = node.nodes.map(function (j) {
                    return _this3.rebuild(j, fix);
                });
            } else if (i === 'parent' && parent) {
                fix.parent = parent;
            } else if (node.hasOwnProperty(i)) {
                fix[i] = node[i];
            }
        }

        return fix;
    };

    /* istanbul ignore next */


    Container.prototype.eachInside = function eachInside(callback) {
        (0, _warnOnce2.default)('Container#eachInside is deprecated. ' + 'Use Container#walk instead.');
        return this.walk(callback);
    };

    /* istanbul ignore next */


    Container.prototype.eachDecl = function eachDecl(prop, callback) {
        (0, _warnOnce2.default)('Container#eachDecl is deprecated. ' + 'Use Container#walkDecls instead.');
        return this.walkDecls(prop, callback);
    };

    /* istanbul ignore next */


    Container.prototype.eachRule = function eachRule(selector, callback) {
        (0, _warnOnce2.default)('Container#eachRule is deprecated. ' + 'Use Container#walkRules instead.');
        return this.walkRules(selector, callback);
    };

    /* istanbul ignore next */


    Container.prototype.eachAtRule = function eachAtRule(name, callback) {
        (0, _warnOnce2.default)('Container#eachAtRule is deprecated. ' + 'Use Container#walkAtRules instead.');
        return this.walkAtRules(name, callback);
    };

    /* istanbul ignore next */


    Container.prototype.eachComment = function eachComment(callback) {
        (0, _warnOnce2.default)('Container#eachComment is deprecated. ' + 'Use Container#walkComments instead.');
        return this.walkComments(callback);
    };

    /* istanbul ignore next */


    _createClass(Container, [{
        key: 'first',
        get: function get() {
            if (!this.nodes) return undefined;
            return this.nodes[0];
        }
    }, {
        key: 'last',
        get: function get() {
            if (!this.nodes) return undefined;
            return this.nodes[this.nodes.length - 1];
        }
    }, {
        key: 'semicolon',
        get: function get() {
            (0, _warnOnce2.default)('Node#semicolon is deprecated. Use Node#raws.semicolon');
            return this.raws.semicolon;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#semicolon is deprecated. Use Node#raws.semicolon');
            this.raws.semicolon = val;
        }

        /* istanbul ignore next */

    }, {
        key: 'after',
        get: function get() {
            (0, _warnOnce2.default)('Node#after is deprecated. Use Node#raws.after');
            return this.raws.after;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#after is deprecated. Use Node#raws.after');
            this.raws.after = val;
        }
    }]);

    return Container;
}(_node2.default);

exports.default = Container;
module.exports = exports['default'];
},{"./at-rule":94,"./comment":95,"./declaration":98,"./node":103,"./parse":104,"./root":110,"./rule":111,"./warn-once":116}],97:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _supportsColor = require('supports-color');

var _supportsColor2 = _interopRequireDefault(_supportsColor);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var CssSyntaxError = function () {
    function CssSyntaxError(message, line, column, source, file, plugin) {
        _classCallCheck(this, CssSyntaxError);

        this.name = 'CssSyntaxError';

        this.reason = message;

        if (file) this.file = file;
        if (source) this.source = source;
        if (plugin) this.plugin = plugin;
        if (typeof line !== 'undefined' && typeof column !== 'undefined') {
            this.line = line;
            this.column = column;
        }

        this.setMessage();

        if (Error.captureStackTrace) {
            Error.captureStackTrace(this, CssSyntaxError);
        }
    }

    CssSyntaxError.prototype.setMessage = function setMessage() {
        this.message = this.plugin ? this.plugin + ': ' : '';
        this.message += this.file ? this.file : '<css input>';
        if (typeof this.line !== 'undefined') {
            this.message += ':' + this.line + ':' + this.column;
        }
        this.message += ': ' + this.reason;
    };

    CssSyntaxError.prototype.showSourceCode = function showSourceCode(color) {
        if (!this.source) return '';

        var num = this.line - 1;
        var lines = this.source.split('\n');

        var prev = num > 0 ? lines[num - 1] + '\n' : '';
        var broken = lines[num];
        var next = num < lines.length - 1 ? '\n' + lines[num + 1] : '';

        var mark = '\n';
        for (var i = 0; i < this.column - 1; i++) {
            mark += ' ';
        }

        if (typeof color === 'undefined') color = _supportsColor2.default;
        if (color) {
            mark += '\x1B[1;31m^\x1B[0m';
        } else {
            mark += '^';
        }

        return '\n' + prev + broken + mark + next;
    };

    CssSyntaxError.prototype.toString = function toString() {
        return this.name + ': ' + this.message + this.showSourceCode();
    };

    /* istanbul ignore next */


    _createClass(CssSyntaxError, [{
        key: 'generated',
        get: function get() {
            (0, _warnOnce2.default)('CssSyntaxError#generated is depreacted. Use input instead.');
            return this.input;
        }
    }]);

    return CssSyntaxError;
}();

exports.default = CssSyntaxError;
module.exports = exports['default'];
},{"./warn-once":116,"supports-color":131}],98:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

var _node = require('./node');

var _node2 = _interopRequireDefault(_node);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Declaration = function (_Node) {
    _inherits(Declaration, _Node);

    function Declaration(defaults) {
        _classCallCheck(this, Declaration);

        var _this = _possibleConstructorReturn(this, _Node.call(this, defaults));

        _this.type = 'decl';
        return _this;
    }

    /* istanbul ignore next */


    _createClass(Declaration, [{
        key: '_value',
        get: function get() {
            (0, _warnOnce2.default)('Node#_value was deprecated. Use Node#raws.value');
            return this.raws.value;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#_value was deprecated. Use Node#raws.value');
            this.raws.value = val;
        }

        /* istanbul ignore next */

    }, {
        key: '_important',
        get: function get() {
            (0, _warnOnce2.default)('Node#_important was deprecated. Use Node#raws.important');
            return this.raws.important;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#_important was deprecated. Use Node#raws.important');
            this.raws.important = val;
        }
    }]);

    return Declaration;
}(_node2.default);

exports.default = Declaration;
module.exports = exports['default'];
},{"./node":103,"./warn-once":116}],99:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _cssSyntaxError = require('./css-syntax-error');

var _cssSyntaxError2 = _interopRequireDefault(_cssSyntaxError);

var _previousMap = require('./previous-map');

var _previousMap2 = _interopRequireDefault(_previousMap);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var sequence = 0;

var Input = function () {
    function Input(css) {
        var opts = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        _classCallCheck(this, Input);

        this.css = css.toString();

        if (this.css[0] === '' || this.css[0] === '￾') {
            this.css = this.css.slice(1);
        }

        if (opts.from) this.file = _path2.default.resolve(opts.from);

        var map = new _previousMap2.default(this.css, opts);
        if (map.text) {
            this.map = map;
            var file = map.consumer().file;
            if (!this.file && file) this.file = this.mapResolve(file);
        }

        if (!this.file) {
            sequence += 1;
            this.id = '<input css ' + sequence + '>';
        }
        if (this.map) this.map.file = this.from;
    }

    Input.prototype.error = function error(message, line, column) {
        var opts = arguments.length <= 3 || arguments[3] === undefined ? {} : arguments[3];

        var result = undefined;
        var origin = this.origin(line, column);
        if (origin) {
            result = new _cssSyntaxError2.default(message, origin.line, origin.column, origin.source, origin.file, opts.plugin);
        } else {
            result = new _cssSyntaxError2.default(message, line, column, this.css, this.file, opts.plugin);
        }

        result.input = { line: line, column: column, source: this.css };
        if (this.file) result.input.file = this.file;

        return result;
    };

    Input.prototype.origin = function origin(line, column) {
        if (!this.map) return false;
        var consumer = this.map.consumer();

        var from = consumer.originalPositionFor({ line: line, column: column });
        if (!from.source) return false;

        var result = {
            file: this.mapResolve(from.source),
            line: from.line,
            column: from.column
        };

        var source = consumer.sourceContentFor(from.source);
        if (source) result.source = source;

        return result;
    };

    Input.prototype.mapResolve = function mapResolve(file) {
        return _path2.default.resolve(this.map.consumer().sourceRoot || '.', file);
    };

    _createClass(Input, [{
        key: 'from',
        get: function get() {
            return this.file || this.id;
        }
    }]);

    return Input;
}();

exports.default = Input;
module.exports = exports['default'];
},{"./css-syntax-error":97,"./previous-map":107,"path":88}],100:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

var _mapGenerator = require('./map-generator');

var _mapGenerator2 = _interopRequireDefault(_mapGenerator);

var _stringify2 = require('./stringify');

var _stringify3 = _interopRequireDefault(_stringify2);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

var _result = require('./result');

var _result2 = _interopRequireDefault(_result);

var _parse = require('./parse');

var _parse2 = _interopRequireDefault(_parse);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function isPromise(obj) {
    return (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && typeof obj.then === 'function';
}

var LazyResult = function () {
    function LazyResult(processor, css, opts) {
        _classCallCheck(this, LazyResult);

        this.stringified = false;
        this.processed = false;

        var root = undefined;
        if ((typeof css === 'undefined' ? 'undefined' : _typeof(css)) === 'object' && css.type === 'root') {
            root = css;
        } else if (css instanceof LazyResult || css instanceof _result2.default) {
            root = css.root;
            if (css.map) {
                if (typeof opts.map === 'undefined') opts.map = {};
                if (!opts.map.inline) opts.map.inline = false;
                opts.map.prev = css.map;
            }
        } else {
            var parser = _parse2.default;
            if (opts.syntax) parser = opts.syntax.parse;
            if (opts.parser) parser = opts.parser;
            if (parser.parse) parser = parser.parse;

            try {
                root = parser(css, opts);
            } catch (error) {
                this.error = error;
            }
        }

        this.result = new _result2.default(processor, root, opts);
    }

    LazyResult.prototype.warnings = function warnings() {
        return this.sync().warnings();
    };

    LazyResult.prototype.toString = function toString() {
        return this.css;
    };

    LazyResult.prototype.then = function then(onFulfilled, onRejected) {
        return this.async().then(onFulfilled, onRejected);
    };

    LazyResult.prototype.catch = function _catch(onRejected) {
        return this.async().catch(onRejected);
    };

    LazyResult.prototype.handleError = function handleError(error, plugin) {
        try {
            this.error = error;
            if (error.name === 'CssSyntaxError' && !error.plugin) {
                error.plugin = plugin.postcssPlugin;
                error.setMessage();
            } else if (plugin.postcssVersion) {
                var pluginName = plugin.postcssPlugin;
                var pluginVer = plugin.postcssVersion;
                var runtimeVer = this.result.processor.version;
                var a = pluginVer.split('.');
                var b = runtimeVer.split('.');

                if (a[0] !== b[0] || parseInt(a[1]) > parseInt(b[1])) {
                    (0, _warnOnce2.default)('Your current PostCSS version ' + 'is ' + runtimeVer + ', but ' + pluginName + ' ' + 'uses ' + pluginVer + '. Perhaps this is ' + 'the source of the error below.');
                }
            }
        } catch (err) {
            /* istanbul ignore next */
            if (console && console.error) console.error(err);
        }
    };

    LazyResult.prototype.asyncTick = function asyncTick(resolve, reject) {
        var _this = this;

        if (this.plugin >= this.processor.plugins.length) {
            this.processed = true;
            return resolve();
        }

        try {
            (function () {
                var plugin = _this.processor.plugins[_this.plugin];
                var promise = _this.run(plugin);
                _this.plugin += 1;

                if (isPromise(promise)) {
                    promise.then(function () {
                        _this.asyncTick(resolve, reject);
                    }).catch(function (error) {
                        _this.handleError(error, plugin);
                        _this.processed = true;
                        reject(error);
                    });
                } else {
                    _this.asyncTick(resolve, reject);
                }
            })();
        } catch (error) {
            this.processed = true;
            reject(error);
        }
    };

    LazyResult.prototype.async = function async() {
        var _this2 = this;

        if (this.processed) {
            return new Promise(function (resolve, reject) {
                if (_this2.error) {
                    reject(_this2.error);
                } else {
                    resolve(_this2.stringify());
                }
            });
        }
        if (this.processing) {
            return this.processing;
        }

        this.processing = new Promise(function (resolve, reject) {
            if (_this2.error) return reject(_this2.error);
            _this2.plugin = 0;
            _this2.asyncTick(resolve, reject);
        }).then(function () {
            _this2.processed = true;
            return _this2.stringify();
        });

        return this.processing;
    };

    LazyResult.prototype.sync = function sync() {
        if (this.processed) return this.result;
        this.processed = true;

        if (this.processing) {
            throw new Error('Use process(css).then(cb) to work with async plugins');
        }

        if (this.error) throw this.error;

        for (var _iterator = this.result.processor.plugins, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
            var _ref;

            if (_isArray) {
                if (_i >= _iterator.length) break;
                _ref = _iterator[_i++];
            } else {
                _i = _iterator.next();
                if (_i.done) break;
                _ref = _i.value;
            }

            var plugin = _ref;

            var promise = this.run(plugin);
            if (isPromise(promise)) {
                throw new Error('Use process(css).then(cb) to work with async plugins');
            }
        }

        return this.result;
    };

    LazyResult.prototype.run = function run(plugin) {
        this.result.lastPlugin = plugin;

        try {
            return plugin(this.result.root, this.result);
        } catch (error) {
            this.handleError(error, plugin);
            throw error;
        }
    };

    LazyResult.prototype.stringify = function stringify() {
        if (this.stringified) return this.result;
        this.stringified = true;

        this.sync();

        var opts = this.result.opts;
        var str = _stringify3.default;
        if (opts.syntax) str = opts.syntax.stringify;
        if (opts.stringifier) str = opts.stringifier;
        if (str.stringify) str = str.stringify;

        var map = new _mapGenerator2.default(str, this.result.root, this.result.opts);
        var data = map.generate();
        this.result.css = data[0];
        this.result.map = data[1];

        return this.result;
    };

    _createClass(LazyResult, [{
        key: 'processor',
        get: function get() {
            return this.result.processor;
        }
    }, {
        key: 'opts',
        get: function get() {
            return this.result.opts;
        }
    }, {
        key: 'css',
        get: function get() {
            return this.stringify().css;
        }
    }, {
        key: 'content',
        get: function get() {
            return this.stringify().content;
        }
    }, {
        key: 'map',
        get: function get() {
            return this.stringify().map;
        }
    }, {
        key: 'root',
        get: function get() {
            return this.sync().root;
        }
    }, {
        key: 'messages',
        get: function get() {
            return this.sync().messages;
        }
    }]);

    return LazyResult;
}();

exports.default = LazyResult;
module.exports = exports['default'];
},{"./map-generator":102,"./parse":104,"./result":109,"./stringify":113,"./warn-once":116}],101:[function(require,module,exports){
'use strict';

exports.__esModule = true;
var list = {
    split: function split(string, separators, last) {
        var array = [];
        var current = '';
        var split = false;

        var func = 0;
        var quote = false;
        var escape = false;

        for (var i = 0; i < string.length; i++) {
            var letter = string[i];

            if (quote) {
                if (escape) {
                    escape = false;
                } else if (letter === '\\') {
                    escape = true;
                } else if (letter === quote) {
                    quote = false;
                }
            } else if (letter === '"' || letter === '\'') {
                quote = letter;
            } else if (letter === '(') {
                func += 1;
            } else if (letter === ')') {
                if (func > 0) func -= 1;
            } else if (func === 0) {
                if (separators.indexOf(letter) !== -1) split = true;
            }

            if (split) {
                if (current !== '') array.push(current.trim());
                current = '';
                split = false;
            } else {
                current += letter;
            }
        }

        if (last || current !== '') array.push(current.trim());
        return array;
    },
    space: function space(string) {
        var spaces = [' ', '\n', '\t'];
        return list.split(string, spaces);
    },
    comma: function comma(string) {
        var comma = ',';
        return list.split(string, [comma], true);
    }
};

exports.default = list;
module.exports = exports['default'];
},{}],102:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _jsBase = require('js-base64');

var _sourceMap = require('source-map');

var _sourceMap2 = _interopRequireDefault(_sourceMap);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _class = function () {
    function _class(stringify, root, opts) {
        _classCallCheck(this, _class);

        this.stringify = stringify;
        this.mapOpts = opts.map || {};
        this.root = root;
        this.opts = opts;
    }

    _class.prototype.isMap = function isMap() {
        if (typeof this.opts.map !== 'undefined') {
            return !!this.opts.map;
        } else {
            return this.previous().length > 0;
        }
    };

    _class.prototype.previous = function previous() {
        var _this = this;

        if (!this.previousMaps) {
            this.previousMaps = [];
            this.root.walk(function (node) {
                if (node.source && node.source.input.map) {
                    var map = node.source.input.map;
                    if (_this.previousMaps.indexOf(map) === -1) {
                        _this.previousMaps.push(map);
                    }
                }
            });
        }

        return this.previousMaps;
    };

    _class.prototype.isInline = function isInline() {
        if (typeof this.mapOpts.inline !== 'undefined') {
            return this.mapOpts.inline;
        }

        var annotation = this.mapOpts.annotation;
        if (typeof annotation !== 'undefined' && annotation !== true) {
            return false;
        }

        if (this.previous().length) {
            return this.previous().some(function (i) {
                return i.inline;
            });
        } else {
            return true;
        }
    };

    _class.prototype.isSourcesContent = function isSourcesContent() {
        if (typeof this.mapOpts.sourcesContent !== 'undefined') {
            return this.mapOpts.sourcesContent;
        }
        if (this.previous().length) {
            return this.previous().some(function (i) {
                return i.withContent();
            });
        } else {
            return true;
        }
    };

    _class.prototype.clearAnnotation = function clearAnnotation() {
        if (this.mapOpts.annotation === false) return;

        var node = undefined;
        for (var i = this.root.nodes.length - 1; i >= 0; i--) {
            node = this.root.nodes[i];
            if (node.type !== 'comment') continue;
            if (node.text.indexOf('# sourceMappingURL=') === 0) {
                this.root.removeChild(i);
            }
        }
    };

    _class.prototype.setSourcesContent = function setSourcesContent() {
        var _this2 = this;

        var already = {};
        this.root.walk(function (node) {
            if (node.source) {
                var from = node.source.input.from;
                if (from && !already[from]) {
                    already[from] = true;
                    var relative = _this2.relative(from);
                    _this2.map.setSourceContent(relative, node.source.input.css);
                }
            }
        });
    };

    _class.prototype.applyPrevMaps = function applyPrevMaps() {
        for (var _iterator = this.previous(), _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
            var _ref;

            if (_isArray) {
                if (_i >= _iterator.length) break;
                _ref = _iterator[_i++];
            } else {
                _i = _iterator.next();
                if (_i.done) break;
                _ref = _i.value;
            }

            var prev = _ref;

            var from = this.relative(prev.file);
            var root = prev.root || _path2.default.dirname(prev.file);
            var map = undefined;

            if (this.mapOpts.sourcesContent === false) {
                map = new _sourceMap2.default.SourceMapConsumer(prev.text);
                if (map.sourcesContent) {
                    map.sourcesContent = map.sourcesContent.map(function () {
                        return null;
                    });
                }
            } else {
                map = prev.consumer();
            }

            this.map.applySourceMap(map, from, this.relative(root));
        }
    };

    _class.prototype.isAnnotation = function isAnnotation() {
        if (this.isInline()) {
            return true;
        } else if (typeof this.mapOpts.annotation !== 'undefined') {
            return this.mapOpts.annotation;
        } else if (this.previous().length) {
            return this.previous().some(function (i) {
                return i.annotation;
            });
        } else {
            return true;
        }
    };

    _class.prototype.addAnnotation = function addAnnotation() {
        var content = undefined;

        if (this.isInline()) {
            content = 'data:application/json;base64,' + _jsBase.Base64.encode(this.map.toString());
        } else if (typeof this.mapOpts.annotation === 'string') {
            content = this.mapOpts.annotation;
        } else {
            content = this.outputFile() + '.map';
        }

        var eol = '\n';
        if (this.css.indexOf('\r\n') !== -1) eol = '\r\n';

        this.css += eol + '/*# sourceMappingURL=' + content + ' */';
    };

    _class.prototype.outputFile = function outputFile() {
        if (this.opts.to) {
            return this.relative(this.opts.to);
        } else if (this.opts.from) {
            return this.relative(this.opts.from);
        } else {
            return 'to.css';
        }
    };

    _class.prototype.generateMap = function generateMap() {
        this.generateString();
        if (this.isSourcesContent()) this.setSourcesContent();
        if (this.previous().length > 0) this.applyPrevMaps();
        if (this.isAnnotation()) this.addAnnotation();

        if (this.isInline()) {
            return [this.css];
        } else {
            return [this.css, this.map];
        }
    };

    _class.prototype.relative = function relative(file) {
        var from = this.opts.to ? _path2.default.dirname(this.opts.to) : '.';

        if (typeof this.mapOpts.annotation === 'string') {
            from = _path2.default.dirname(_path2.default.resolve(from, this.mapOpts.annotation));
        }

        file = _path2.default.relative(from, file);
        /* istanbul ignore next */
        if (_path2.default.sep === '\\') {
            return file.replace(/\\/g, '/');
        } else {
            return file;
        }
    };

    _class.prototype.sourcePath = function sourcePath(node) {
        return this.relative(node.source.input.from);
    };

    _class.prototype.generateString = function generateString() {
        var _this3 = this;

        this.css = '';
        this.map = new _sourceMap2.default.SourceMapGenerator({ file: this.outputFile() });

        var line = 1;
        var column = 1;

        var lines = undefined,
            last = undefined;
        this.stringify(this.root, function (str, node, type) {
            _this3.css += str;

            if (node && node.source && node.source.start && type !== 'end') {
                _this3.map.addMapping({
                    source: _this3.sourcePath(node),
                    original: {
                        line: node.source.start.line,
                        column: node.source.start.column - 1
                    },
                    generated: { line: line, column: column - 1 }
                });
            }

            lines = str.match(/\n/g);
            if (lines) {
                line += lines.length;
                last = str.lastIndexOf('\n');
                column = str.length - last;
            } else {
                column += str.length;
            }

            if (node && node.source && node.source.end && type !== 'start') {
                _this3.map.addMapping({
                    source: _this3.sourcePath(node),
                    original: {
                        line: node.source.end.line,
                        column: node.source.end.column
                    },
                    generated: { line: line, column: column - 1 }
                });
            }
        });
    };

    _class.prototype.generate = function generate() {
        this.clearAnnotation();

        if (this.isMap()) {
            return this.generateMap();
        } else {
            var result = '';
            this.stringify(this.root, function (i) {
                result += i;
            });
            return [result];
        }
    };

    return _class;
}();

exports.default = _class;
module.exports = exports['default'];
},{"js-base64":85,"path":88,"source-map":130}],103:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

var _cssSyntaxError = require('./css-syntax-error');

var _cssSyntaxError2 = _interopRequireDefault(_cssSyntaxError);

var _stringifier = require('./stringifier');

var _stringifier2 = _interopRequireDefault(_stringifier);

var _stringify = require('./stringify');

var _stringify2 = _interopRequireDefault(_stringify);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var cloneNode = function cloneNode(obj, parent) {
    var cloned = new obj.constructor();

    for (var i in obj) {
        if (!obj.hasOwnProperty(i)) continue;
        var value = obj[i];
        var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);

        if (i === 'parent' && type === 'object') {
            if (parent) cloned[i] = parent;
        } else if (i === 'source') {
            cloned[i] = value;
        } else if (value instanceof Array) {
            cloned[i] = value.map(function (j) {
                return cloneNode(j, cloned);
            });
        } else if (i !== 'before' && i !== 'after' && i !== 'between' && i !== 'semicolon') {
            if (type === 'object' && value !== null) value = cloneNode(value);
            cloned[i] = value;
        }
    }

    return cloned;
};

var Node = function () {
    function Node() {
        var defaults = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        _classCallCheck(this, Node);

        this.raws = {};

        for (var name in defaults) {
            this[name] = defaults[name];
        }
    }

    Node.prototype.error = function error(message) {
        var opts = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        if (this.source) {
            var pos = this.positionBy(opts);
            return this.source.input.error(message, pos.line, pos.column, opts);
        } else {
            return new _cssSyntaxError2.default(message);
        }
    };

    Node.prototype.warn = function warn(result, text, opts) {
        return result.warn(text, _extends({ node: this }, opts));
    };

    Node.prototype.remove = function remove() {
        if (this.parent) {
            this.parent.removeChild(this);
        }
        this.parent = undefined;
        return this;
    };

    Node.prototype.toString = function toString() {
        var stringifier = arguments.length <= 0 || arguments[0] === undefined ? _stringify2.default : arguments[0];

        if (stringifier.stringify) stringifier = stringifier.stringify;
        var result = '';
        stringifier(this, function (i) {
            result += i;
        });
        return result;
    };

    Node.prototype.clone = function clone() {
        var overrides = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        var cloned = cloneNode(this);
        for (var name in overrides) {
            cloned[name] = overrides[name];
        }
        return cloned;
    };

    Node.prototype.cloneBefore = function cloneBefore() {
        var overrides = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        var cloned = this.clone(overrides);
        this.parent.insertBefore(this, cloned);
        return cloned;
    };

    Node.prototype.cloneAfter = function cloneAfter() {
        var overrides = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        var cloned = this.clone(overrides);
        this.parent.insertAfter(this, cloned);
        return cloned;
    };

    Node.prototype.replaceWith = function replaceWith() {
        if (this.parent) {
            for (var _len = arguments.length, nodes = Array(_len), _key = 0; _key < _len; _key++) {
                nodes[_key] = arguments[_key];
            }

            for (var _iterator = nodes, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
                var _ref;

                if (_isArray) {
                    if (_i >= _iterator.length) break;
                    _ref = _iterator[_i++];
                } else {
                    _i = _iterator.next();
                    if (_i.done) break;
                    _ref = _i.value;
                }

                var node = _ref;

                this.parent.insertBefore(this, node);
            }

            this.remove();
        }

        return this;
    };

    Node.prototype.moveTo = function moveTo(container) {
        this.cleanRaws(this.root() === container.root());
        this.remove();
        container.append(this);
        return this;
    };

    Node.prototype.moveBefore = function moveBefore(node) {
        this.cleanRaws(this.root() === node.root());
        this.remove();
        node.parent.insertBefore(node, this);
        return this;
    };

    Node.prototype.moveAfter = function moveAfter(node) {
        this.cleanRaws(this.root() === node.root());
        this.remove();
        node.parent.insertAfter(node, this);
        return this;
    };

    Node.prototype.next = function next() {
        var index = this.parent.index(this);
        return this.parent.nodes[index + 1];
    };

    Node.prototype.prev = function prev() {
        var index = this.parent.index(this);
        return this.parent.nodes[index - 1];
    };

    Node.prototype.toJSON = function toJSON() {
        var fixed = {};

        for (var name in this) {
            if (!this.hasOwnProperty(name)) continue;
            if (name === 'parent') continue;
            var value = this[name];

            if (value instanceof Array) {
                fixed[name] = value.map(function (i) {
                    if ((typeof i === 'undefined' ? 'undefined' : _typeof(i)) === 'object' && i.toJSON) {
                        return i.toJSON();
                    } else {
                        return i;
                    }
                });
            } else if ((typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object' && value.toJSON) {
                fixed[name] = value.toJSON();
            } else {
                fixed[name] = value;
            }
        }

        return fixed;
    };

    Node.prototype.raw = function raw(own, detect) {
        var str = new _stringifier2.default();
        return str.raw(this, own, detect);
    };

    Node.prototype.root = function root() {
        var result = this;
        while (result.parent) {
            result = result.parent;
        }return result;
    };

    Node.prototype.cleanRaws = function cleanRaws(keepBetween) {
        delete this.raws.before;
        delete this.raws.after;
        if (!keepBetween) delete this.raws.between;
    };

    Node.prototype.positionInside = function positionInside(index) {
        var string = this.toString();
        var column = this.source.start.column;
        var line = this.source.start.line;

        for (var i = 0; i < index; i++) {
            if (string[i] === '\n') {
                column = 1;
                line += 1;
            } else {
                column += 1;
            }
        }

        return { line: line, column: column };
    };

    Node.prototype.positionBy = function positionBy(opts) {
        var pos = this.source.start;
        if (opts.index) {
            pos = this.positionInside(opts.index);
        } else if (opts.word) {
            var index = this.toString().indexOf(opts.word);
            if (index !== -1) pos = this.positionInside(index);
        }
        return pos;
    };

    /* istanbul ignore next */


    Node.prototype.removeSelf = function removeSelf() {
        (0, _warnOnce2.default)('Node#removeSelf is deprecated. Use Node#remove.');
        return this.remove();
    };

    /* istanbul ignore next */


    Node.prototype.replace = function replace(nodes) {
        (0, _warnOnce2.default)('Node#replace is deprecated. Use Node#replaceWith');
        return this.replaceWith(nodes);
    };

    /* istanbul ignore next */


    Node.prototype.style = function style(own, detect) {
        (0, _warnOnce2.default)('Node#style() is deprecated. Use Node#raw()');
        return this.raw(own, detect);
    };

    /* istanbul ignore next */


    Node.prototype.cleanStyles = function cleanStyles(keepBetween) {
        (0, _warnOnce2.default)('Node#cleanStyles() is deprecated. Use Node#cleanRaws()');
        return this.cleanRaws(keepBetween);
    };

    /* istanbul ignore next */


    _createClass(Node, [{
        key: 'before',
        get: function get() {
            (0, _warnOnce2.default)('Node#before is deprecated. Use Node#raws.before');
            return this.raws.before;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#before is deprecated. Use Node#raws.before');
            this.raws.before = val;
        }

        /* istanbul ignore next */

    }, {
        key: 'between',
        get: function get() {
            (0, _warnOnce2.default)('Node#between is deprecated. Use Node#raws.between');
            return this.raws.between;
        }

        /* istanbul ignore next */
        ,
        set: function set(val) {
            (0, _warnOnce2.default)('Node#between is deprecated. Use Node#raws.between');
            this.raws.between = val;
        }
    }]);

    return Node;
}();

exports.default = Node;
module.exports = exports['default'];
},{"./css-syntax-error":97,"./stringifier":112,"./stringify":113,"./warn-once":116}],104:[function(require,module,exports){
'use strict';

exports.__esModule = true;
exports.default = parse;

var _parser = require('./parser');

var _parser2 = _interopRequireDefault(_parser);

var _input = require('./input');

var _input2 = _interopRequireDefault(_input);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function parse(css, opts) {
    /* istanbul ignore if */
    if (opts && opts.safe) {
        throw new Error('Option safe was removed. ' + 'Use parser: require("postcss-safe-parser")');
    }

    var input = new _input2.default(css, opts);

    var parser = new _parser2.default(input);
    parser.tokenize();
    parser.loop();

    return parser.root;
}
module.exports = exports['default'];
},{"./input":99,"./parser":105}],105:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _declaration = require('./declaration');

var _declaration2 = _interopRequireDefault(_declaration);

var _tokenize = require('./tokenize');

var _tokenize2 = _interopRequireDefault(_tokenize);

var _comment = require('./comment');

var _comment2 = _interopRequireDefault(_comment);

var _atRule = require('./at-rule');

var _atRule2 = _interopRequireDefault(_atRule);

var _root = require('./root');

var _root2 = _interopRequireDefault(_root);

var _rule = require('./rule');

var _rule2 = _interopRequireDefault(_rule);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Parser = function () {
    function Parser(input) {
        _classCallCheck(this, Parser);

        this.input = input;

        this.pos = 0;
        this.root = new _root2.default();
        this.current = this.root;
        this.spaces = '';
        this.semicolon = false;

        this.root.source = { input: input, start: { line: 1, column: 1 } };
    }

    Parser.prototype.tokenize = function tokenize() {
        this.tokens = (0, _tokenize2.default)(this.input);
    };

    Parser.prototype.loop = function loop() {
        var token = undefined;
        while (this.pos < this.tokens.length) {
            token = this.tokens[this.pos];

            switch (token[0]) {
                case 'word':
                case ':':
                    this.word();
                    break;

                case '}':
                    this.end(token);
                    break;

                case 'comment':
                    this.comment(token);
                    break;

                case 'at-word':
                    this.atrule(token);
                    break;

                case '{':
                    this.emptyRule(token);
                    break;

                default:
                    this.spaces += token[1];
                    break;
            }

            this.pos += 1;
        }
        this.endFile();
    };

    Parser.prototype.comment = function comment(token) {
        var node = new _comment2.default();
        this.init(node, token[2], token[3]);
        node.source.end = { line: token[4], column: token[5] };

        var text = token[1].slice(2, -2);
        if (/^\s*$/.test(text)) {
            node.text = '';
            node.raws.left = text;
            node.raws.right = '';
        } else {
            var match = text.match(/^(\s*)([^]*[^\s])(\s*)$/);
            node.text = match[2];
            node.raws.left = match[1];
            node.raws.right = match[3];
        }
    };

    Parser.prototype.emptyRule = function emptyRule(token) {
        var node = new _rule2.default();
        this.init(node, token[2], token[3]);
        node.selector = '';
        node.raws.between = '';
        this.current = node;
    };

    Parser.prototype.word = function word() {
        var token = undefined;
        var end = false;
        var type = null;
        var colon = false;
        var bracket = null;
        var brackets = 0;

        var start = this.pos;
        this.pos += 1;
        while (this.pos < this.tokens.length) {
            token = this.tokens[this.pos];
            type = token[0];

            if (type === '(') {
                if (!bracket) bracket = token;
                brackets += 1;
            } else if (brackets === 0) {
                if (type === ';') {
                    if (colon) {
                        this.decl(this.tokens.slice(start, this.pos + 1));
                        return;
                    } else {
                        break;
                    }
                } else if (type === '{') {
                    this.rule(this.tokens.slice(start, this.pos + 1));
                    return;
                } else if (type === '}') {
                    this.pos -= 1;
                    end = true;
                    break;
                } else if (type === ':') {
                    colon = true;
                }
            } else if (type === ')') {
                brackets -= 1;
                if (brackets === 0) bracket = null;
            }

            this.pos += 1;
        }
        if (this.pos === this.tokens.length) {
            this.pos -= 1;
            end = true;
        }

        if (brackets > 0) this.unclosedBracket(bracket);

        if (end && colon) {
            while (this.pos > start) {
                token = this.tokens[this.pos][0];
                if (token !== 'space' && token !== 'comment') break;
                this.pos -= 1;
            }
            this.decl(this.tokens.slice(start, this.pos + 1));
            return;
        }

        this.unknownWord(start);
    };

    Parser.prototype.rule = function rule(tokens) {
        tokens.pop();

        var node = new _rule2.default();
        this.init(node, tokens[0][2], tokens[0][3]);

        node.raws.between = this.spacesFromEnd(tokens);
        this.raw(node, 'selector', tokens);
        this.current = node;
    };

    Parser.prototype.decl = function decl(tokens) {
        var node = new _declaration2.default();
        this.init(node);

        var last = tokens[tokens.length - 1];
        if (last[0] === ';') {
            this.semicolon = true;
            tokens.pop();
        }
        if (last[4]) {
            node.source.end = { line: last[4], column: last[5] };
        } else {
            node.source.end = { line: last[2], column: last[3] };
        }

        while (tokens[0][0] !== 'word') {
            node.raws.before += tokens.shift()[1];
        }
        node.source.start = { line: tokens[0][2], column: tokens[0][3] };

        node.prop = '';
        while (tokens.length) {
            var type = tokens[0][0];
            if (type === ':' || type === 'space' || type === 'comment') {
                break;
            }
            node.prop += tokens.shift()[1];
        }

        node.raws.between = '';

        var token = undefined;
        while (tokens.length) {
            token = tokens.shift();

            if (token[0] === ':') {
                node.raws.between += token[1];
                break;
            } else {
                node.raws.between += token[1];
            }
        }

        if (node.prop[0] === '_' || node.prop[0] === '*') {
            node.raws.before += node.prop[0];
            node.prop = node.prop.slice(1);
        }
        node.raws.between += this.spacesFromStart(tokens);
        this.precheckMissedSemicolon(tokens);

        for (var i = tokens.length - 1; i > 0; i--) {
            token = tokens[i];
            if (token[1] === '!important') {
                node.important = true;
                var string = this.stringFrom(tokens, i);
                string = this.spacesFromEnd(tokens) + string;
                if (string !== ' !important') node.raws.important = string;
                break;
            } else if (token[1] === 'important') {
                var cache = tokens.slice(0);
                var str = '';
                for (var j = i; j > 0; j--) {
                    var type = cache[j][0];
                    if (str.trim().indexOf('!') === 0 && type !== 'space') {
                        break;
                    }
                    str = cache.pop()[1] + str;
                }
                if (str.trim().indexOf('!') === 0) {
                    node.important = true;
                    node.raws.important = str;
                    tokens = cache;
                }
            }

            if (token[0] !== 'space' && token[0] !== 'comment') {
                break;
            }
        }

        this.raw(node, 'value', tokens);

        if (node.value.indexOf(':') !== -1) this.checkMissedSemicolon(tokens);
    };

    Parser.prototype.atrule = function atrule(token) {
        var node = new _atRule2.default();
        node.name = token[1].slice(1);
        if (node.name === '') {
            this.unnamedAtrule(node, token);
        }
        this.init(node, token[2], token[3]);

        var last = false;
        var open = false;
        var params = [];

        this.pos += 1;
        while (this.pos < this.tokens.length) {
            token = this.tokens[this.pos];

            if (token[0] === ';') {
                node.source.end = { line: token[2], column: token[3] };
                this.semicolon = true;
                break;
            } else if (token[0] === '{') {
                open = true;
                break;
            } else if (token[0] === '}') {
                this.end(token);
                break;
            } else {
                params.push(token);
            }

            this.pos += 1;
        }
        if (this.pos === this.tokens.length) {
            last = true;
        }

        node.raws.between = this.spacesFromEnd(params);
        if (params.length) {
            node.raws.afterName = this.spacesFromStart(params);
            this.raw(node, 'params', params);
            if (last) {
                token = params[params.length - 1];
                node.source.end = { line: token[4], column: token[5] };
                this.spaces = node.raws.between;
                node.raws.between = '';
            }
        } else {
            node.raws.afterName = '';
            node.params = '';
        }

        if (open) {
            node.nodes = [];
            this.current = node;
        }
    };

    Parser.prototype.end = function end(token) {
        if (this.current.nodes && this.current.nodes.length) {
            this.current.raws.semicolon = this.semicolon;
        }
        this.semicolon = false;

        this.current.raws.after = (this.current.raws.after || '') + this.spaces;
        this.spaces = '';

        if (this.current.parent) {
            this.current.source.end = { line: token[2], column: token[3] };
            this.current = this.current.parent;
        } else {
            this.unexpectedClose(token);
        }
    };

    Parser.prototype.endFile = function endFile() {
        if (this.current.parent) this.unclosedBlock();
        if (this.current.nodes && this.current.nodes.length) {
            this.current.raws.semicolon = this.semicolon;
        }
        this.current.raws.after = (this.current.raws.after || '') + this.spaces;
    };

    // Helpers

    Parser.prototype.init = function init(node, line, column) {
        this.current.push(node);

        node.source = { start: { line: line, column: column }, input: this.input };
        node.raws.before = this.spaces;
        this.spaces = '';
        if (node.type !== 'comment') this.semicolon = false;
    };

    Parser.prototype.raw = function raw(node, prop, tokens) {
        var token = undefined,
            type = undefined;
        var length = tokens.length;
        var value = '';
        var clean = true;
        for (var i = 0; i < length; i += 1) {
            token = tokens[i];
            type = token[0];
            if (type === 'comment' || type === 'space' && i === length - 1) {
                clean = false;
            } else {
                value += token[1];
            }
        }
        if (!clean) {
            var raw = tokens.reduce(function (all, i) {
                return all + i[1];
            }, '');
            node.raws[prop] = { value: value, raw: raw };
        }
        node[prop] = value;
    };

    Parser.prototype.spacesFromEnd = function spacesFromEnd(tokens) {
        var next = undefined;
        var spaces = '';
        while (tokens.length) {
            next = tokens[tokens.length - 1][0];
            if (next !== 'space' && next !== 'comment') break;
            spaces += tokens.pop()[1];
        }
        return spaces;
    };

    Parser.prototype.spacesFromStart = function spacesFromStart(tokens) {
        var next = undefined;
        var spaces = '';
        while (tokens.length) {
            next = tokens[0][0];
            if (next !== 'space' && next !== 'comment') break;
            spaces += tokens.shift()[1];
        }
        return spaces;
    };

    Parser.prototype.stringFrom = function stringFrom(tokens, from) {
        var result = '';
        for (var i = from; i < tokens.length; i++) {
            result += tokens[i][1];
        }
        tokens.splice(from, tokens.length - from);
        return result;
    };

    Parser.prototype.colon = function colon(tokens) {
        var brackets = 0;
        var token = undefined,
            type = undefined,
            prev = undefined;
        for (var i = 0; i < tokens.length; i++) {
            token = tokens[i];
            type = token[0];

            if (type === '(') {
                brackets += 1;
            } else if (type === ')') {
                brackets -= 1;
            } else if (brackets === 0 && type === ':') {
                if (!prev) {
                    this.doubleColon(token);
                } else if (prev[0] === 'word' && prev[1] === 'progid') {
                    continue;
                } else {
                    return i;
                }
            }

            prev = token;
        }
        return false;
    };

    // Errors

    Parser.prototype.unclosedBracket = function unclosedBracket(bracket) {
        throw this.input.error('Unclosed bracket', bracket[2], bracket[3]);
    };

    Parser.prototype.unknownWord = function unknownWord(start) {
        var token = this.tokens[start];
        throw this.input.error('Unknown word', token[2], token[3]);
    };

    Parser.prototype.unexpectedClose = function unexpectedClose(token) {
        throw this.input.error('Unexpected }', token[2], token[3]);
    };

    Parser.prototype.unclosedBlock = function unclosedBlock() {
        var pos = this.current.source.start;
        throw this.input.error('Unclosed block', pos.line, pos.column);
    };

    Parser.prototype.doubleColon = function doubleColon(token) {
        throw this.input.error('Double colon', token[2], token[3]);
    };

    Parser.prototype.unnamedAtrule = function unnamedAtrule(node, token) {
        throw this.input.error('At-rule without name', token[2], token[3]);
    };

    Parser.prototype.precheckMissedSemicolon = function precheckMissedSemicolon(tokens) {
        // Hook for Safe Parser
        tokens;
    };

    Parser.prototype.checkMissedSemicolon = function checkMissedSemicolon(tokens) {
        var colon = this.colon(tokens);
        if (colon === false) return;

        var founded = 0;
        var token = undefined;
        for (var j = colon - 1; j >= 0; j--) {
            token = tokens[j];
            if (token[0] !== 'space') {
                founded += 1;
                if (founded === 2) break;
            }
        }
        throw this.input.error('Missed semicolon', token[2], token[3]);
    };

    return Parser;
}();

exports.default = Parser;
module.exports = exports['default'];
},{"./at-rule":94,"./comment":95,"./declaration":98,"./root":110,"./rule":111,"./tokenize":114}],106:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _declaration = require('./declaration');

var _declaration2 = _interopRequireDefault(_declaration);

var _processor = require('./processor');

var _processor2 = _interopRequireDefault(_processor);

var _stringify = require('./stringify');

var _stringify2 = _interopRequireDefault(_stringify);

var _comment = require('./comment');

var _comment2 = _interopRequireDefault(_comment);

var _atRule = require('./at-rule');

var _atRule2 = _interopRequireDefault(_atRule);

var _vendor = require('./vendor');

var _vendor2 = _interopRequireDefault(_vendor);

var _parse = require('./parse');

var _parse2 = _interopRequireDefault(_parse);

var _list = require('./list');

var _list2 = _interopRequireDefault(_list);

var _rule = require('./rule');

var _rule2 = _interopRequireDefault(_rule);

var _root = require('./root');

var _root2 = _interopRequireDefault(_root);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var postcss = function postcss() {
    for (var _len = arguments.length, plugins = Array(_len), _key = 0; _key < _len; _key++) {
        plugins[_key] = arguments[_key];
    }

    if (plugins.length === 1 && Array.isArray(plugins[0])) {
        plugins = plugins[0];
    }
    return new _processor2.default(plugins);
};

postcss.plugin = function (name, initializer) {
    var creator = function creator() {
        var transformer = initializer.apply(undefined, arguments);
        transformer.postcssPlugin = name;
        transformer.postcssVersion = new _processor2.default().version;
        return transformer;
    };

    creator.postcss = creator();
    creator.process = function (css, opts) {
        return postcss([creator(opts)]).process(css, opts);
    };
    return creator;
};

postcss.stringify = _stringify2.default;
postcss.vendor = _vendor2.default;
postcss.parse = _parse2.default;
postcss.list = _list2.default;

postcss.comment = function (defaults) {
    return new _comment2.default(defaults);
};
postcss.atRule = function (defaults) {
    return new _atRule2.default(defaults);
};
postcss.decl = function (defaults) {
    return new _declaration2.default(defaults);
};
postcss.rule = function (defaults) {
    return new _rule2.default(defaults);
};
postcss.root = function (defaults) {
    return new _root2.default(defaults);
};

exports.default = postcss;
module.exports = exports['default'];
},{"./at-rule":94,"./comment":95,"./declaration":98,"./list":101,"./parse":104,"./processor":108,"./root":110,"./rule":111,"./stringify":113,"./vendor":115}],107:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

var _jsBase = require('js-base64');

var _sourceMap = require('source-map');

var _sourceMap2 = _interopRequireDefault(_sourceMap);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var PreviousMap = function () {
    function PreviousMap(css, opts) {
        _classCallCheck(this, PreviousMap);

        this.loadAnnotation(css);
        this.inline = this.startWith(this.annotation, 'data:');

        var prev = opts.map ? opts.map.prev : undefined;
        var text = this.loadMap(opts.from, prev);
        if (text) this.text = text;
    }

    PreviousMap.prototype.consumer = function consumer() {
        if (!this.consumerCache) {
            this.consumerCache = new _sourceMap2.default.SourceMapConsumer(this.text);
        }
        return this.consumerCache;
    };

    PreviousMap.prototype.withContent = function withContent() {
        return !!(this.consumer().sourcesContent && this.consumer().sourcesContent.length > 0);
    };

    PreviousMap.prototype.startWith = function startWith(string, start) {
        if (!string) return false;
        return string.substr(0, start.length) === start;
    };

    PreviousMap.prototype.loadAnnotation = function loadAnnotation(css) {
        var match = css.match(/\/\*\s*# sourceMappingURL=(.*)\s*\*\//);
        if (match) this.annotation = match[1].trim();
    };

    PreviousMap.prototype.decodeInline = function decodeInline(text) {
        var utf64 = 'data:application/json;charset=utf-8;base64,';
        var b64 = 'data:application/json;base64,';
        var uri = 'data:application/json,';

        if (this.startWith(text, uri)) {
            return decodeURIComponent(text.substr(uri.length));
        } else if (this.startWith(text, b64)) {
            return _jsBase.Base64.decode(text.substr(b64.length));
        } else if (this.startWith(text, utf64)) {
            return _jsBase.Base64.decode(text.substr(utf64.length));
        } else {
            var encoding = text.match(/data:application\/json;([^,]+),/)[1];
            throw new Error('Unsupported source map encoding ' + encoding);
        }
    };

    PreviousMap.prototype.loadMap = function loadMap(file, prev) {
        if (prev === false) return false;

        if (prev) {
            if (typeof prev === 'string') {
                return prev;
            } else if (prev instanceof _sourceMap2.default.SourceMapConsumer) {
                return _sourceMap2.default.SourceMapGenerator.fromSourceMap(prev).toString();
            } else if (prev instanceof _sourceMap2.default.SourceMapGenerator) {
                return prev.toString();
            } else if (this.isMap(prev)) {
                return JSON.stringify(prev);
            } else {
                throw new Error('Unsupported previous source map format: ' + prev.toString());
            }
        } else if (this.inline) {
            return this.decodeInline(this.annotation);
        } else if (this.annotation) {
            var map = this.annotation;
            if (file) map = _path2.default.join(_path2.default.dirname(file), map);

            this.root = _path2.default.dirname(map);
            if (_fs2.default.existsSync && _fs2.default.existsSync(map)) {
                return _fs2.default.readFileSync(map, 'utf-8').toString().trim();
            } else {
                return false;
            }
        }
    };

    PreviousMap.prototype.isMap = function isMap(map) {
        if ((typeof map === 'undefined' ? 'undefined' : _typeof(map)) !== 'object') return false;
        return typeof map.mappings === 'string' || typeof map._mappings === 'string';
    };

    return PreviousMap;
}();

exports.default = PreviousMap;
module.exports = exports['default'];
},{"fs":37,"js-base64":85,"path":88,"source-map":130}],108:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };

var _lazyResult = require('./lazy-result');

var _lazyResult2 = _interopRequireDefault(_lazyResult);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Processor = function () {
    function Processor() {
        var plugins = arguments.length <= 0 || arguments[0] === undefined ? [] : arguments[0];

        _classCallCheck(this, Processor);

        this.version = '5.0.14';

        this.plugins = this.normalize(plugins);
    }

    Processor.prototype.use = function use(plugin) {
        this.plugins = this.plugins.concat(this.normalize([plugin]));
        return this;
    };

    Processor.prototype.process = function process(css) {
        var opts = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        return new _lazyResult2.default(this, css, opts);
    };

    Processor.prototype.normalize = function normalize(plugins) {
        var normalized = [];
        for (var _iterator = plugins, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
            var _ref;

            if (_isArray) {
                if (_i >= _iterator.length) break;
                _ref = _iterator[_i++];
            } else {
                _i = _iterator.next();
                if (_i.done) break;
                _ref = _i.value;
            }

            var i = _ref;

            if (i.postcss) i = i.postcss;

            if ((typeof i === 'undefined' ? 'undefined' : _typeof(i)) === 'object' && Array.isArray(i.plugins)) {
                normalized = normalized.concat(i.plugins);
            } else if (typeof i === 'function') {
                normalized.push(i);
            } else {
                throw new Error(i + ' is not a PostCSS plugin');
            }
        }
        return normalized;
    };

    return Processor;
}();

exports.default = Processor;
module.exports = exports['default'];
},{"./lazy-result":100}],109:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _warning = require('./warning');

var _warning2 = _interopRequireDefault(_warning);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Result = function () {
    function Result(processor, root, opts) {
        _classCallCheck(this, Result);

        this.processor = processor;
        this.messages = [];
        this.root = root;
        this.opts = opts;
        this.css = undefined;
        this.map = undefined;
    }

    Result.prototype.toString = function toString() {
        return this.css;
    };

    Result.prototype.warn = function warn(text) {
        var opts = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        if (!opts.plugin) {
            if (this.lastPlugin && this.lastPlugin.postcssPlugin) {
                opts.plugin = this.lastPlugin.postcssPlugin;
            }
        }

        this.messages.push(new _warning2.default(text, opts));
    };

    Result.prototype.warnings = function warnings() {
        return this.messages.filter(function (i) {
            return i.type === 'warning';
        });
    };

    _createClass(Result, [{
        key: 'content',
        get: function get() {
            return this.css;
        }
    }]);

    return Result;
}();

exports.default = Result;
module.exports = exports['default'];
},{"./warning":117}],110:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _container = require('./container');

var _container2 = _interopRequireDefault(_container);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Root = function (_Container) {
    _inherits(Root, _Container);

    function Root(defaults) {
        _classCallCheck(this, Root);

        var _this = _possibleConstructorReturn(this, _Container.call(this, defaults));

        _this.type = 'root';

        if (!_this.nodes) _this.nodes = [];
        return _this;
    }

    Root.prototype.removeChild = function removeChild(child) {
        child = this.index(child);

        if (child === 0 && this.nodes.length > 1) {
            this.nodes[1].raws.before = this.nodes[child].raws.before;
        }

        return _Container.prototype.removeChild.call(this, child);
    };

    Root.prototype.normalize = function normalize(child, sample, type) {
        var nodes = _Container.prototype.normalize.call(this, child);

        if (sample) {
            if (type === 'prepend') {
                if (this.nodes.length > 1) {
                    sample.raws.before = this.nodes[1].raws.before;
                } else {
                    delete sample.raws.before;
                }
            } else if (this.first !== sample) {
                for (var _iterator = nodes, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
                    var _ref;

                    if (_isArray) {
                        if (_i >= _iterator.length) break;
                        _ref = _iterator[_i++];
                    } else {
                        _i = _iterator.next();
                        if (_i.done) break;
                        _ref = _i.value;
                    }

                    var node = _ref;

                    node.raws.before = sample.raws.before;
                }
            }
        }

        return nodes;
    };

    Root.prototype.toResult = function toResult() {
        var opts = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        var LazyResult = require('./lazy-result');
        var Processor = require('./processor');

        var lazy = new LazyResult(new Processor(), this, opts);
        return lazy.stringify();
    };

    /* istanbul ignore next */


    Root.prototype.remove = function remove(child) {
        (0, _warnOnce2.default)('Root#remove is deprecated. Use Root#removeChild');
        this.removeChild(child);
    };

    /* istanbul ignore next */


    Root.prototype.prevMap = function prevMap() {
        (0, _warnOnce2.default)('Root#prevMap is deprecated. Use Root#source.input.map');
        return this.source.input.map;
    };

    return Root;
}(_container2.default);

exports.default = Root;
module.exports = exports['default'];
},{"./container":96,"./lazy-result":100,"./processor":108,"./warn-once":116}],111:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _container = require('./container');

var _container2 = _interopRequireDefault(_container);

var _warnOnce = require('./warn-once');

var _warnOnce2 = _interopRequireDefault(_warnOnce);

var _list = require('./list');

var _list2 = _interopRequireDefault(_list);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Rule = function (_Container) {
    _inherits(Rule, _Container);

    function Rule(defaults) {
        _classCallCheck(this, Rule);

        var _this = _possibleConstructorReturn(this, _Container.call(this, defaults));

        _this.type = 'rule';

        if (!_this.nodes) _this.nodes = [];
        return _this;
    }

    _createClass(Rule, [{
        key: 'selectors',
        get: function get() {
            return _list2.default.comma(this.selector);
        },
        set: function set(values) {
            var match = this.selector ? this.selector.match(/,\s*/) : null;
            var sep = match ? match[0] : ',' + this.raw('between', 'beforeOpen');
            this.selector = values.join(sep);
        }
    }, {
        key: '_selector',
        get: function get() {
            /* istanbul ignore next */
            (0, _warnOnce2.default)('Rule#_selector is deprecated. Use Rule#raws.selector');
            /* istanbul ignore next */
            return this.raws.selector;
        },
        set: function set(val) {
            /* istanbul ignore next */
            (0, _warnOnce2.default)('Rule#_selector is deprecated. Use Rule#raws.selector');
            /* istanbul ignore next */
            this.raws.selector = val;
        }
    }]);

    return Rule;
}(_container2.default);

exports.default = Rule;
module.exports = exports['default'];
},{"./container":96,"./list":101,"./warn-once":116}],112:[function(require,module,exports){
'use strict';

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var defaultRaw = {
    colon: ': ',
    indent: '    ',
    beforeDecl: '\n',
    beforeRule: '\n',
    beforeOpen: ' ',
    beforeClose: '\n',
    beforeComment: '\n',
    after: '\n',
    emptyBody: '',
    commentLeft: ' ',
    commentRight: ' '
};

function capitalize(str) {
    return str[0].toUpperCase() + str.slice(1);
}

var Stringifier = function () {
    function Stringifier(builder) {
        _classCallCheck(this, Stringifier);

        this.builder = builder;
    }

    Stringifier.prototype.stringify = function stringify(node, semicolon) {
        this[node.type](node, semicolon);
    };

    Stringifier.prototype.root = function root(node) {
        this.body(node);
        if (node.raws.after) this.builder(node.raws.after);
    };

    Stringifier.prototype.comment = function comment(node) {
        var left = this.raw(node, 'left', 'commentLeft');
        var right = this.raw(node, 'right', 'commentRight');
        this.builder('/*' + left + node.text + right + '*/', node);
    };

    Stringifier.prototype.decl = function decl(node, semicolon) {
        var between = this.raw(node, 'between', 'colon');
        var string = node.prop + between + this.rawValue(node, 'value');

        if (node.important) {
            string += node.raws.important || ' !important';
        }

        if (semicolon) string += ';';
        this.builder(string, node);
    };

    Stringifier.prototype.rule = function rule(node) {
        this.block(node, this.rawValue(node, 'selector'));
    };

    Stringifier.prototype.atrule = function atrule(node, semicolon) {
        var name = '@' + node.name;
        var params = node.params ? this.rawValue(node, 'params') : '';

        if (typeof node.raws.afterName !== 'undefined') {
            name += node.raws.afterName;
        } else if (params) {
            name += ' ';
        }

        if (node.nodes) {
            this.block(node, name + params);
        } else {
            var end = (node.raws.between || '') + (semicolon ? ';' : '');
            this.builder(name + params + end, node);
        }
    };

    Stringifier.prototype.body = function body(node) {
        var last = node.nodes.length - 1;
        while (last > 0) {
            if (node.nodes[last].type !== 'comment') break;
            last -= 1;
        }

        var semicolon = this.raw(node, 'semicolon');
        for (var i = 0; i < node.nodes.length; i++) {
            var child = node.nodes[i];
            var before = this.raw(child, 'before');
            if (before) this.builder(before);
            this.stringify(child, last !== i || semicolon);
        }
    };

    Stringifier.prototype.block = function block(node, start) {
        var between = this.raw(node, 'between', 'beforeOpen');
        this.builder(start + between + '{', node, 'start');

        var after = undefined;
        if (node.nodes && node.nodes.length) {
            this.body(node);
            after = this.raw(node, 'after');
        } else {
            after = this.raw(node, 'after', 'emptyBody');
        }

        if (after) this.builder(after);
        this.builder('}', node, 'end');
    };

    Stringifier.prototype.raw = function raw(node, own, detect) {
        var value = undefined;
        if (!detect) detect = own;

        // Already had
        if (own) {
            value = node.raws[own];
            if (typeof value !== 'undefined') return value;
        }

        var parent = node.parent;

        // Hack for first rule in CSS
        if (detect === 'before') {
            if (!parent || parent.type === 'root' && parent.first === node) {
                return '';
            }
        }

        // Floating child without parent
        if (!parent) return defaultRaw[detect];

        // Detect style by other nodes
        var root = node.root();
        if (!root.rawCache) root.rawCache = {};
        if (typeof root.rawCache[detect] !== 'undefined') {
            return root.rawCache[detect];
        }

        if (detect === 'before' || detect === 'after') {
            return this.beforeAfter(node, detect);
        } else {
            var method = 'raw' + capitalize(detect);
            if (this[method]) {
                value = this[method](root, node);
            } else {
                root.walk(function (i) {
                    value = i.raws[own];
                    if (typeof value !== 'undefined') return false;
                });
            }
        }

        if (typeof value === 'undefined') value = defaultRaw[detect];

        root.rawCache[detect] = value;
        return value;
    };

    Stringifier.prototype.rawSemicolon = function rawSemicolon(root) {
        var value = undefined;
        root.walk(function (i) {
            if (i.nodes && i.nodes.length && i.last.type === 'decl') {
                value = i.raws.semicolon;
                if (typeof value !== 'undefined') return false;
            }
        });
        return value;
    };

    Stringifier.prototype.rawEmptyBody = function rawEmptyBody(root) {
        var value = undefined;
        root.walk(function (i) {
            if (i.nodes && i.nodes.length === 0) {
                value = i.raws.after;
                if (typeof value !== 'undefined') return false;
            }
        });
        return value;
    };

    Stringifier.prototype.rawIndent = function rawIndent(root) {
        if (root.raws.indent) return root.raws.indent;
        var value = undefined;
        root.walk(function (i) {
            var p = i.parent;
            if (p && p !== root && p.parent && p.parent === root) {
                if (typeof i.raws.before !== 'undefined') {
                    var parts = i.raws.before.split('\n');
                    value = parts[parts.length - 1];
                    value = value.replace(/[^\s]/g, '');
                    return false;
                }
            }
        });
        return value;
    };

    Stringifier.prototype.rawBeforeComment = function rawBeforeComment(root, node) {
        var value = undefined;
        root.walkComments(function (i) {
            if (typeof i.raws.before !== 'undefined') {
                value = i.raws.before;
                if (value.indexOf('\n') !== -1) {
                    value = value.replace(/[^\n]+$/, '');
                }
                return false;
            }
        });
        if (typeof value === 'undefined') {
            value = this.raw(node, null, 'beforeDecl');
        }
        return value;
    };

    Stringifier.prototype.rawBeforeDecl = function rawBeforeDecl(root, node) {
        var value = undefined;
        root.walkDecls(function (i) {
            if (typeof i.raws.before !== 'undefined') {
                value = i.raws.before;
                if (value.indexOf('\n') !== -1) {
                    value = value.replace(/[^\n]+$/, '');
                }
                return false;
            }
        });
        if (typeof value === 'undefined') {
            value = this.raw(node, null, 'beforeRule');
        }
        return value;
    };

    Stringifier.prototype.rawBeforeRule = function rawBeforeRule(root) {
        var value = undefined;
        root.walk(function (i) {
            if (i.nodes && (i.parent !== root || root.first !== i)) {
                if (typeof i.raws.before !== 'undefined') {
                    value = i.raws.before;
                    if (value.indexOf('\n') !== -1) {
                        value = value.replace(/[^\n]+$/, '');
                    }
                    return false;
                }
            }
        });
        return value;
    };

    Stringifier.prototype.rawBeforeClose = function rawBeforeClose(root) {
        var value = undefined;
        root.walk(function (i) {
            if (i.nodes && i.nodes.length > 0) {
                if (typeof i.raws.after !== 'undefined') {
                    value = i.raws.after;
                    if (value.indexOf('\n') !== -1) {
                        value = value.replace(/[^\n]+$/, '');
                    }
                    return false;
                }
            }
        });
        return value;
    };

    Stringifier.prototype.rawBeforeOpen = function rawBeforeOpen(root) {
        var value = undefined;
        root.walk(function (i) {
            if (i.type !== 'decl') {
                value = i.raws.between;
                if (typeof value !== 'undefined') return false;
            }
        });
        return value;
    };

    Stringifier.prototype.rawColon = function rawColon(root) {
        var value = undefined;
        root.walkDecls(function (i) {
            if (typeof i.raws.between !== 'undefined') {
                value = i.raws.between.replace(/[^\s:]/g, '');
                return false;
            }
        });
        return value;
    };

    Stringifier.prototype.beforeAfter = function beforeAfter(node, detect) {
        var value = undefined;
        if (node.type === 'decl') {
            value = this.raw(node, null, 'beforeDecl');
        } else if (node.type === 'comment') {
            value = this.raw(node, null, 'beforeComment');
        } else if (detect === 'before') {
            value = this.raw(node, null, 'beforeRule');
        } else {
            value = this.raw(node, null, 'beforeClose');
        }

        var buf = node.parent;
        var depth = 0;
        while (buf && buf.type !== 'root') {
            depth += 1;
            buf = buf.parent;
        }

        if (value.indexOf('\n') !== -1) {
            var indent = this.raw(node, null, 'indent');
            if (indent.length) {
                for (var step = 0; step < depth; step++) {
                    value += indent;
                }
            }
        }

        return value;
    };

    Stringifier.prototype.rawValue = function rawValue(node, prop) {
        var value = node[prop];
        var raw = node.raws[prop];
        if (raw && raw.value === value) {
            return raw.raw;
        } else {
            return value;
        }
    };

    return Stringifier;
}();

exports.default = Stringifier;
module.exports = exports['default'];
},{}],113:[function(require,module,exports){
'use strict';

exports.__esModule = true;
exports.default = stringify;

var _stringifier = require('./stringifier');

var _stringifier2 = _interopRequireDefault(_stringifier);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function stringify(node, builder) {
    var str = new _stringifier2.default(builder);
    str.stringify(node);
}
module.exports = exports['default'];
},{"./stringifier":112}],114:[function(require,module,exports){
'use strict';

exports.__esModule = true;
exports.default = tokenize;
var SINGLE_QUOTE = 39;
var DOUBLE_QUOTE = 34;
var BACKSLASH = 92;
var SLASH = 47;
var NEWLINE = 10;
var SPACE = 32;
var FEED = 12;
var TAB = 9;
var CR = 13;
var OPEN_PARENTHESES = 40;
var CLOSE_PARENTHESES = 41;
var OPEN_CURLY = 123;
var CLOSE_CURLY = 125;
var SEMICOLON = 59;
var ASTERICK = 42;
var COLON = 58;
var AT = 64;

var RE_AT_END = /[ \n\t\r\f\{\(\)'"\\;/]/g;
var RE_WORD_END = /[ \n\t\r\f\(\)\{\}:;@!'"\\]|\/(?=\*)/g;
var RE_BAD_BRACKET = /.[\\\/\("'\n]/;

function tokenize(input) {
    var tokens = [];
    var css = input.css.valueOf();

    var code = undefined,
        next = undefined,
        quote = undefined,
        lines = undefined,
        last = undefined,
        content = undefined,
        escape = undefined,
        nextLine = undefined,
        nextOffset = undefined,
        escaped = undefined,
        escapePos = undefined,
        prev = undefined,
        n = undefined;

    var length = css.length;
    var offset = -1;
    var line = 1;
    var pos = 0;

    function unclosed(what) {
        throw input.error('Unclosed ' + what, line, pos - offset);
    }

    while (pos < length) {
        code = css.charCodeAt(pos);

        if (code === NEWLINE || code === FEED || code === CR && css.charCodeAt(pos + 1) !== NEWLINE) {
            offset = pos;
            line += 1;
        }

        switch (code) {
            case NEWLINE:
            case SPACE:
            case TAB:
            case CR:
            case FEED:
                next = pos;
                do {
                    next += 1;
                    code = css.charCodeAt(next);
                    if (code === NEWLINE) {
                        offset = next;
                        line += 1;
                    }
                } while (code === SPACE || code === NEWLINE || code === TAB || code === CR || code === FEED);

                tokens.push(['space', css.slice(pos, next)]);
                pos = next - 1;
                break;

            case OPEN_CURLY:
                tokens.push(['{', '{', line, pos - offset]);
                break;

            case CLOSE_CURLY:
                tokens.push(['}', '}', line, pos - offset]);
                break;

            case COLON:
                tokens.push([':', ':', line, pos - offset]);
                break;

            case SEMICOLON:
                tokens.push([';', ';', line, pos - offset]);
                break;

            case OPEN_PARENTHESES:
                prev = tokens.length ? tokens[tokens.length - 1][1] : '';
                n = css.charCodeAt(pos + 1);
                if (prev === 'url' && n !== SINGLE_QUOTE && n !== DOUBLE_QUOTE && n !== SPACE && n !== NEWLINE && n !== TAB && n !== FEED && n !== CR) {
                    next = pos;
                    do {
                        escaped = false;
                        next = css.indexOf(')', next + 1);
                        if (next === -1) unclosed('bracket');
                        escapePos = next;
                        while (css.charCodeAt(escapePos - 1) === BACKSLASH) {
                            escapePos -= 1;
                            escaped = !escaped;
                        }
                    } while (escaped);

                    tokens.push(['brackets', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
                    pos = next;
                } else {
                    next = css.indexOf(')', pos + 1);
                    content = css.slice(pos, next + 1);

                    if (next === -1 || RE_BAD_BRACKET.test(content)) {
                        tokens.push(['(', '(', line, pos - offset]);
                    } else {
                        tokens.push(['brackets', content, line, pos - offset, line, next - offset]);
                        pos = next;
                    }
                }

                break;

            case CLOSE_PARENTHESES:
                tokens.push([')', ')', line, pos - offset]);
                break;

            case SINGLE_QUOTE:
            case DOUBLE_QUOTE:
                quote = code === SINGLE_QUOTE ? '\'' : '"';
                next = pos;
                do {
                    escaped = false;
                    next = css.indexOf(quote, next + 1);
                    if (next === -1) unclosed('quote');
                    escapePos = next;
                    while (css.charCodeAt(escapePos - 1) === BACKSLASH) {
                        escapePos -= 1;
                        escaped = !escaped;
                    }
                } while (escaped);

                content = css.slice(pos, next + 1);
                lines = content.split('\n');
                last = lines.length - 1;

                if (last > 0) {
                    nextLine = line + last;
                    nextOffset = next - lines[last].length;
                } else {
                    nextLine = line;
                    nextOffset = offset;
                }

                tokens.push(['string', css.slice(pos, next + 1), line, pos - offset, nextLine, next - nextOffset]);

                offset = nextOffset;
                line = nextLine;
                pos = next;
                break;

            case AT:
                RE_AT_END.lastIndex = pos + 1;
                RE_AT_END.test(css);
                if (RE_AT_END.lastIndex === 0) {
                    next = css.length - 1;
                } else {
                    next = RE_AT_END.lastIndex - 2;
                }
                tokens.push(['at-word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
                pos = next;
                break;

            case BACKSLASH:
                next = pos;
                escape = true;
                while (css.charCodeAt(next + 1) === BACKSLASH) {
                    next += 1;
                    escape = !escape;
                }
                code = css.charCodeAt(next + 1);
                if (escape && code !== SLASH && code !== SPACE && code !== NEWLINE && code !== TAB && code !== CR && code !== FEED) {
                    next += 1;
                }
                tokens.push(['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
                pos = next;
                break;

            default:
                if (code === SLASH && css.charCodeAt(pos + 1) === ASTERICK) {
                    next = css.indexOf('*/', pos + 2) + 1;
                    if (next === 0) unclosed('comment');

                    content = css.slice(pos, next + 1);
                    lines = content.split('\n');
                    last = lines.length - 1;

                    if (last > 0) {
                        nextLine = line + last;
                        nextOffset = next - lines[last].length;
                    } else {
                        nextLine = line;
                        nextOffset = offset;
                    }

                    tokens.push(['comment', content, line, pos - offset, nextLine, next - nextOffset]);

                    offset = nextOffset;
                    line = nextLine;
                    pos = next;
                } else {
                    RE_WORD_END.lastIndex = pos + 1;
                    RE_WORD_END.test(css);
                    if (RE_WORD_END.lastIndex === 0) {
                        next = css.length - 1;
                    } else {
                        next = RE_WORD_END.lastIndex - 2;
                    }

                    tokens.push(['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
                    pos = next;
                }

                break;
        }

        pos++;
    }

    return tokens;
}
module.exports = exports['default'];
},{}],115:[function(require,module,exports){
'use strict';

exports.__esModule = true;
exports.default = {
    prefix: function prefix(prop) {
        if (prop[0] === '-') {
            var sep = prop.indexOf('-', 1);
            return prop.substr(0, sep + 1);
        } else {
            return '';
        }
    },
    unprefixed: function unprefixed(prop) {
        if (prop[0] === '-') {
            var sep = prop.indexOf('-', 1);
            return prop.substr(sep + 1);
        } else {
            return prop;
        }
    }
};
module.exports = exports['default'];
},{}],116:[function(require,module,exports){
'use strict';

exports.__esModule = true;
exports.default = warnOnce;
/* istanbul ignore next */

var printed = {};

function warnOnce(message) {
    if (printed[message]) return;
    printed[message] = true;

    if (typeof console !== 'undefined' && console.warn) console.warn(message);
}
module.exports = exports['default'];
},{}],117:[function(require,module,exports){
'use strict';

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Warning = function () {
    function Warning(text) {
        var opts = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        _classCallCheck(this, Warning);

        this.type = 'warning';

        this.text = text;

        if (opts.node && opts.node.source) {
            var pos = opts.node.positionBy(opts);
            this.line = pos.line;
            this.column = pos.column;
        }

        for (var opt in opts) {
            this[opt] = opts[opt];
        }
    }

    Warning.prototype.toString = function toString() {
        if (this.node) {
            return this.node.error(this.text, {
                plugin: this.plugin,
                index: this.index,
                word: this.word
            }).message;
        } else if (this.plugin) {
            return this.plugin + ': ' + this.text;
        } else {
            return this.text;
        }
    };

    return Warning;
}();

exports.default = Warning;
module.exports = exports['default'];
},{}],118:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};

process.nextTick = (function () {
    var canSetImmediate = typeof window !== 'undefined'
    && window.setImmediate;
    var canMutationObserver = typeof window !== 'undefined'
    && window.MutationObserver;
    var canPost = typeof window !== 'undefined'
    && window.postMessage && window.addEventListener
    ;

    if (canSetImmediate) {
        return function (f) { return window.setImmediate(f) };
    }

    var queue = [];

    if (canMutationObserver) {
        var hiddenDiv = document.createElement("div");
        var observer = new MutationObserver(function () {
            var queueList = queue.slice();
            queue.length = 0;
            queueList.forEach(function (fn) {
                fn();
            });
        });

        observer.observe(hiddenDiv, { attributes: true });

        return function nextTick(fn) {
            if (!queue.length) {
                hiddenDiv.setAttribute('yes', 'no');
            }
            queue.push(fn);
        };
    }

    if (canPost) {
        window.addEventListener('message', function (ev) {
            var source = ev.source;
            if ((source === window || source === null) && ev.data === 'process-tick') {
                ev.stopPropagation();
                if (queue.length > 0) {
                    var fn = queue.shift();
                    fn();
                }
            }
        }, true);

        return function nextTick(fn) {
            queue.push(fn);
            window.postMessage('process-tick', '*');
        };
    }

    return function nextTick(fn) {
        setTimeout(fn, 0);
    };
})();

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};

},{}],119:[function(require,module,exports){
'use strict';
// # simple-statistics
//
// A simple, literate statistics system. The code below uses the
// [Javascript module pattern](http://www.adequatelygood.com/2010/3/JavaScript-Module-Pattern-In-Depth),
// eventually assigning `simple-statistics` to `ss` in browsers or the
// `exports` object for node.js
(function() {
    var ss = {};

    /* istanbul ignore else */
    if (typeof module !== 'undefined') {
        // Assign the `ss` object to exports, so that you can require
        // it in [node.js](http://nodejs.org/)
        module.exports = ss;
    } else {
        // Otherwise, in a browser, we assign `ss` to the window object,
        // so you can simply refer to it as `ss`.
        // Coverage testing will always skip this line, so we exclude
        // it from istanbul's vision.
        this.ss = ss;
    }

    // # [Linear Regression](http://en.wikipedia.org/wiki/Linear_regression)
    //
    // [Simple linear regression](http://en.wikipedia.org/wiki/Simple_linear_regression)
    // is a simple way to find a fitted line
    // between a set of coordinates.
    function linear_regression() {
        var linreg = {},
            data = [];

        // Assign data to the model. Data is assumed to be an array.
        linreg.data = function(x) {
            if (!arguments.length) return data;
            data = x.slice();
            return linreg;
        };

        // Calculate the slope and y-intercept of the regression line
        // by calculating the least sum of squares
        linreg.mb = function() {
            var m, b;

            // Store data length in a local variable to reduce
            // repeated object property lookups
            var data_length = data.length;

            //if there's only one point, arbitrarily choose a slope of 0
            //and a y-intercept of whatever the y of the initial point is
            if (data_length === 1) {
                m = 0;
                b = data[0][1];
            } else {
                // Initialize our sums and scope the `m` and `b`
                // variables that define the line.
                var sum_x = 0, sum_y = 0,
                    sum_xx = 0, sum_xy = 0;

                // Use local variables to grab point values
                // with minimal object property lookups
                var point, x, y;

                // Gather the sum of all x values, the sum of all
                // y values, and the sum of x^2 and (x*y) for each
                // value.
                //
                // In math notation, these would be SS_x, SS_y, SS_xx, and SS_xy
                for (var i = 0; i < data_length; i++) {
                    point = data[i];
                    x = point[0];
                    y = point[1];

                    sum_x += x;
                    sum_y += y;

                    sum_xx += x * x;
                    sum_xy += x * y;
                }

                // `m` is the slope of the regression line
                m = ((data_length * sum_xy) - (sum_x * sum_y)) /
                    ((data_length * sum_xx) - (sum_x * sum_x));

                // `b` is the y-intercept of the line.
                b = (sum_y / data_length) - ((m * sum_x) / data_length);
            }

            // Return both values as an object.
            return { m: m, b: b };
        };

        // a shortcut for simply getting the slope of the regression line
        linreg.m = function() {
            return linreg.mb().m;
        };

        // a shortcut for simply getting the y-intercept of the regression
        // line.
        linreg.b = function() {
            return linreg.mb().b;
        };

        // ## Fitting The Regression Line
        //
        // This is called after `.data()` and returns the
        // equation `y = f(x)` which gives the position
        // of the regression line at each point in `x`.
        linreg.line = function() {

            // Get the slope, `m`, and y-intercept, `b`, of the line.
            var mb = linreg.mb(),
                m = mb.m,
                b = mb.b;

            // Return a function that computes a `y` value for each
            // x value it is given, based on the values of `b` and `a`
            // that we just computed.
            return function(x) {
                return b + (m * x);
            };
        };

        return linreg;
    }

    // # [R Squared](http://en.wikipedia.org/wiki/Coefficient_of_determination)
    //
    // The r-squared value of data compared with a function `f`
    // is the sum of the squared differences between the prediction
    // and the actual value.
    function r_squared(data, f) {
        if (data.length < 2) return 1;

        // Compute the average y value for the actual
        // data set in order to compute the
        // _total sum of squares_
        var sum = 0, average;
        for (var i = 0; i < data.length; i++) {
            sum += data[i][1];
        }
        average = sum / data.length;

        // Compute the total sum of squares - the
        // squared difference between each point
        // and the average of all points.
        var sum_of_squares = 0;
        for (var j = 0; j < data.length; j++) {
            sum_of_squares += Math.pow(average - data[j][1], 2);
        }

        // Finally estimate the error: the squared
        // difference between the estimate and the actual data
        // value at each point.
        var err = 0;
        for (var k = 0; k < data.length; k++) {
            err += Math.pow(data[k][1] - f(data[k][0]), 2);
        }

        // As the error grows larger, its ratio to the
        // sum of squares increases and the r squared
        // value grows lower.
        return 1 - (err / sum_of_squares);
    }


    // # [Bayesian Classifier](http://en.wikipedia.org/wiki/Naive_Bayes_classifier)
    //
    // This is a naïve bayesian classifier that takes
    // singly-nested objects.
    function bayesian() {
        // The `bayes_model` object is what will be exposed
        // by this closure, with all of its extended methods, and will
        // have access to all scope variables, like `total_count`.
        var bayes_model = {},
            // The number of items that are currently
            // classified in the model
            total_count = 0,
            // Every item classified in the model
            data = {};

        // ## Train
        // Train the classifier with a new item, which has a single
        // dimension of Javascript literal keys and values.
        bayes_model.train = function(item, category) {
            // If the data object doesn't have any values
            // for this category, create a new object for it.
            if (!data[category]) data[category] = {};

            // Iterate through each key in the item.
            for (var k in item) {
                var v = item[k];
                // Initialize the nested object `data[category][k][item[k]]`
                // with an object of keys that equal 0.
                if (data[category][k] === undefined) data[category][k] = {};
                if (data[category][k][v] === undefined) data[category][k][v] = 0;

                // And increment the key for this key/value combination.
                data[category][k][item[k]]++;
            }
            // Increment the number of items classified
            total_count++;
        };

        // ## Score
        // Generate a score of how well this item matches all
        // possible categories based on its attributes
        bayes_model.score = function(item) {
            // Initialize an empty array of odds per category.
            var odds = {}, category;
            // Iterate through each key in the item,
            // then iterate through each category that has been used
            // in previous calls to `.train()`
            for (var k in item) {
                var v = item[k];
                for (category in data) {
                    // Create an empty object for storing key - value combinations
                    // for this category.
                    if (odds[category] === undefined) odds[category] = {};

                    // If this item doesn't even have a property, it counts for nothing,
                    // but if it does have the property that we're looking for from
                    // the item to categorize, it counts based on how popular it is
                    // versus the whole population.
                    if (data[category][k]) {
                        odds[category][k + '_' + v] = (data[category][k][v] || 0) / total_count;
                    } else {
                        odds[category][k + '_' + v] = 0;
                    }
                }
            }

            // Set up a new object that will contain sums of these odds by category
            var odds_sums = {};

            for (category in odds) {
                // Tally all of the odds for each category-combination pair -
                // the non-existence of a category does not add anything to the
                // score.
                for (var combination in odds[category]) {
                    if (odds_sums[category] === undefined) odds_sums[category] = 0;
                    odds_sums[category] += odds[category][combination];
                }
            }

            return odds_sums;
        };

        // Return the completed model.
        return bayes_model;
    }

    // # sum
    //
    // is simply the result of adding all numbers
    // together, starting from zero.
    //
    // This runs on `O(n)`, linear time in respect to the array
    function sum(x) {
        var value = 0;
        for (var i = 0; i < x.length; i++) {
            value += x[i];
        }
        return value;
    }

    // # mean
    //
    // is the sum over the number of values
    //
    // This runs on `O(n)`, linear time in respect to the array
    function mean(x) {
        // The mean of no numbers is null
        if (x.length === 0) return null;

        return sum(x) / x.length;
    }

    // # geometric mean
    //
    // a mean function that is more useful for numbers in different
    // ranges.
    //
    // this is the nth root of the input numbers multiplied by each other
    //
    // This runs on `O(n)`, linear time in respect to the array
    function geometric_mean(x) {
        // The mean of no numbers is null
        if (x.length === 0) return null;

        // the starting value.
        var value = 1;

        for (var i = 0; i < x.length; i++) {
            // the geometric mean is only valid for positive numbers
            if (x[i] <= 0) return null;

            // repeatedly multiply the value by each number
            value *= x[i];
        }

        return Math.pow(value, 1 / x.length);
    }


    // # harmonic mean
    //
    // a mean function typically used to find the average of rates
    //
    // this is the reciprocal of the arithmetic mean of the reciprocals
    // of the input numbers
    //
    // This runs on `O(n)`, linear time in respect to the array
    function harmonic_mean(x) {
        // The mean of no numbers is null
        if (x.length === 0) return null;

        var reciprocal_sum = 0;

        for (var i = 0; i < x.length; i++) {
            // the harmonic mean is only valid for positive numbers
            if (x[i] <= 0) return null;

            reciprocal_sum += 1 / x[i];
        }

        // divide n by the the reciprocal sum
        return x.length / reciprocal_sum;
    }

    // root mean square (RMS)
    //
    // a mean function used as a measure of the magnitude of a set
    // of numbers, regardless of their sign
    //
    // this is the square root of the mean of the squares of the
    // input numbers
    //
    // This runs on `O(n)`, linear time in respect to the array
    function root_mean_square(x) {
        if (x.length === 0) return null;

        var sum_of_squares = 0;
        for (var i = 0; i < x.length; i++) {
            sum_of_squares += Math.pow(x[i], 2);
        }

        return Math.sqrt(sum_of_squares / x.length);
    }

    // # min
    //
    // This is simply the minimum number in the set.
    //
    // This runs on `O(n)`, linear time in respect to the array
    function min(x) {
        var value;
        for (var i = 0; i < x.length; i++) {
            // On the first iteration of this loop, min is
            // undefined and is thus made the minimum element in the array
            if (x[i] < value || value === undefined) value = x[i];
        }
        return value;
    }

    // # max
    //
    // This is simply the maximum number in the set.
    //
    // This runs on `O(n)`, linear time in respect to the array
    function max(x) {
        var value;
        for (var i = 0; i < x.length; i++) {
            // On the first iteration of this loop, max is
            // undefined and is thus made the maximum element in the array
            if (x[i] > value || value === undefined) value = x[i];
        }
        return value;
    }

    // # [variance](http://en.wikipedia.org/wiki/Variance)
    //
    // is the sum of squared deviations from the mean
    //
    // depends on `mean()`
    function variance(x) {
        // The variance of no numbers is null
        if (x.length === 0) return null;

        var mean_value = mean(x),
            deviations = [];

        // Make a list of squared deviations from the mean.
        for (var i = 0; i < x.length; i++) {
            deviations.push(Math.pow(x[i] - mean_value, 2));
        }

        // Find the mean value of that list
        return mean(deviations);
    }

    // # [standard deviation](http://en.wikipedia.org/wiki/Standard_deviation)
    //
    // is just the square root of the variance.
    //
    // depends on `variance()`
    function standard_deviation(x) {
        // The standard deviation of no numbers is null
        if (x.length === 0) return null;

        return Math.sqrt(variance(x));
    }

    // The sum of deviations to the Nth power.
    // When n=2 it's the sum of squared deviations.
    // When n=3 it's the sum of cubed deviations.
    //
    // depends on `mean()`
    function sum_nth_power_deviations(x, n) {
        var mean_value = mean(x),
            sum = 0;

        for (var i = 0; i < x.length; i++) {
            sum += Math.pow(x[i] - mean_value, n);
        }

        return sum;
    }

    // # [variance](http://en.wikipedia.org/wiki/Variance)
    //
    // is the sum of squared deviations from the mean
    //
    // depends on `sum_nth_power_deviations`
    function sample_variance(x) {
        // The variance of no numbers is null
        if (x.length <= 1) return null;

        var sum_squared_deviations_value = sum_nth_power_deviations(x, 2);

        // Find the mean value of that list
        return sum_squared_deviations_value / (x.length - 1);
    }

    // # [standard deviation](http://en.wikipedia.org/wiki/Standard_deviation)
    //
    // is just the square root of the variance.
    //
    // depends on `sample_variance()`
    function sample_standard_deviation(x) {
        // The standard deviation of no numbers is null
        if (x.length <= 1) return null;

        return Math.sqrt(sample_variance(x));
    }

    // # [covariance](http://en.wikipedia.org/wiki/Covariance)
    //
    // sample covariance of two datasets:
    // how much do the two datasets move together?
    // x and y are two datasets, represented as arrays of numbers.
    //
    // depends on `mean()`
    function sample_covariance(x, y) {

        // The two datasets must have the same length which must be more than 1
        if (x.length <= 1 || x.length !== y.length) {
            return null;
        }

        // determine the mean of each dataset so that we can judge each
        // value of the dataset fairly as the difference from the mean. this
        // way, if one dataset is [1, 2, 3] and [2, 3, 4], their covariance
        // does not suffer because of the difference in absolute values
        var xmean = mean(x),
            ymean = mean(y),
            sum = 0;

        // for each pair of values, the covariance increases when their
        // difference from the mean is associated - if both are well above
        // or if both are well below
        // the mean, the covariance increases significantly.
        for (var i = 0; i < x.length; i++) {
            sum += (x[i] - xmean) * (y[i] - ymean);
        }

        // the covariance is weighted by the length of the datasets.
        return sum / (x.length - 1);
    }

    // # [correlation](http://en.wikipedia.org/wiki/Correlation_and_dependence)
    //
    // Gets a measure of how correlated two datasets are, between -1 and 1
    //
    // depends on `sample_standard_deviation()` and `sample_covariance()`
    function sample_correlation(x, y) {
        var cov = sample_covariance(x, y),
            xstd = sample_standard_deviation(x),
            ystd = sample_standard_deviation(y);

        if (cov === null || xstd === null || ystd === null) {
            return null;
        }

        return cov / xstd / ystd;
    }

    // # [median](http://en.wikipedia.org/wiki/Median)
    //
    // The middle number of a list. This is often a good indicator of 'the middle'
    // when there are outliers that skew the `mean()` value.
    function median(x) {
        // The median of an empty list is null
        if (x.length === 0) return null;

        // Sorting the array makes it easy to find the center, but
        // use `.slice()` to ensure the original array `x` is not modified
        var sorted = x.slice().sort(function (a, b) { return a - b; });

        // If the length of the list is odd, it's the central number
        if (sorted.length % 2 === 1) {
            return sorted[(sorted.length - 1) / 2];
        // Otherwise, the median is the average of the two numbers
        // at the center of the list
        } else {
            var a = sorted[(sorted.length / 2) - 1];
            var b = sorted[(sorted.length / 2)];
            return (a + b) / 2;
        }
    }

    // # [mode](http://bit.ly/W5K4Yt)
    //
    // The mode is the number that appears in a list the highest number of times.
    // There can be multiple modes in a list: in the event of a tie, this
    // algorithm will return the most recently seen mode.
    //
    // This implementation is inspired by [science.js](https://github.com/jasondavies/science.js/blob/master/src/stats/mode.js)
    //
    // This runs on `O(n)`, linear time in respect to the array
    function mode(x) {

        // Handle edge cases:
        // The median of an empty list is null
        if (x.length === 0) return null;
        else if (x.length === 1) return x[0];

        // Sorting the array lets us iterate through it below and be sure
        // that every time we see a new number it's new and we'll never
        // see the same number twice
        var sorted = x.slice().sort(function (a, b) { return a - b; });

        // This assumes it is dealing with an array of size > 1, since size
        // 0 and 1 are handled immediately. Hence it starts at index 1 in the
        // array.
        var last = sorted[0],
            // store the mode as we find new modes
            value,
            // store how many times we've seen the mode
            max_seen = 0,
            // how many times the current candidate for the mode
            // has been seen
            seen_this = 1;

        // end at sorted.length + 1 to fix the case in which the mode is
        // the highest number that occurs in the sequence. the last iteration
        // compares sorted[i], which is undefined, to the highest number
        // in the series
        for (var i = 1; i < sorted.length + 1; i++) {
            // we're seeing a new number pass by
            if (sorted[i] !== last) {
                // the last number is the new mode since we saw it more
                // often than the old one
                if (seen_this > max_seen) {
                    max_seen = seen_this;
                    value = last;
                }
                seen_this = 1;
                last = sorted[i];
            // if this isn't a new number, it's one more occurrence of
            // the potential mode
            } else { seen_this++; }
        }
        return value;
    }

    // # [t-test](http://en.wikipedia.org/wiki/Student's_t-test)
    //
    // This is to compute a one-sample t-test, comparing the mean
    // of a sample to a known value, x.
    //
    // in this case, we're trying to determine whether the
    // population mean is equal to the value that we know, which is `x`
    // here. usually the results here are used to look up a
    // [p-value](http://en.wikipedia.org/wiki/P-value), which, for
    // a certain level of significance, will let you determine that the
    // null hypothesis can or cannot be rejected.
    //
    // Depends on `standard_deviation()` and `mean()`
    function t_test(sample, x) {
        // The mean of the sample
        var sample_mean = mean(sample);

        // The standard deviation of the sample
        var sd = standard_deviation(sample);

        // Square root the length of the sample
        var rootN = Math.sqrt(sample.length);

        // Compute the known value against the sample,
        // returning the t value
        return (sample_mean - x) / (sd / rootN);
    }

    // # [2-sample t-test](http://en.wikipedia.org/wiki/Student's_t-test)
    //
    // This is to compute two sample t-test.
    // Tests whether "mean(X)-mean(Y) = difference", (
    // in the most common case, we often have `difference == 0` to test if two samples
    // are likely to be taken from populations with the same mean value) with
    // no prior knowledge on standard deviations of both samples
    // other than the fact that they have the same standard deviation.
    //
    // Usually the results here are used to look up a
    // [p-value](http://en.wikipedia.org/wiki/P-value), which, for
    // a certain level of significance, will let you determine that the
    // null hypothesis can or cannot be rejected.
    //
    // `diff` can be omitted if it equals 0.
    //
    // [This is used to confirm or deny](http://www.monarchlab.org/Lab/Research/Stats/2SampleT.aspx)
    // a null hypothesis that the two populations that have been sampled into
    // `sample_x` and `sample_y` are equal to each other.
    //
    // Depends on `sample_variance()` and `mean()`
    function t_test_two_sample(sample_x, sample_y, difference) {
        var n = sample_x.length,
            m = sample_y.length;

        // If either sample doesn't actually have any values, we can't
        // compute this at all, so we return `null`.
        if (!n || !m) return null;

        // default difference (mu) is zero
        if (!difference) difference = 0;

        var meanX = mean(sample_x),
            meanY = mean(sample_y);

        var weightedVariance = ((n - 1) * sample_variance(sample_x) +
            (m - 1) * sample_variance(sample_y)) / (n + m - 2);

        return (meanX - meanY - difference) /
            Math.sqrt(weightedVariance * (1 / n + 1 / m));
    }

    // # chunk
    //
    // Split an array into chunks of a specified size. This function
    // has the same behavior as [PHP's array_chunk](http://php.net/manual/en/function.array-chunk.php)
    // function, and thus will insert smaller-sized chunks at the end if
    // the input size is not divisible by the chunk size.
    //
    // `sample` is expected to be an array, and `chunkSize` a number.
    // The `sample` array can contain any kind of data.
    function chunk(sample, chunkSize) {

        // a list of result chunks, as arrays in an array
        var output = [];

        // `chunkSize` must be zero or higher - otherwise the loop below,
        // in which we call `start += chunkSize`, will loop infinitely.
        // So, we'll detect and return null in that case to indicate
        // invalid input.
        if (chunkSize <= 0) {
            return null;
        }

        // `start` is the index at which `.slice` will start selecting
        // new array elements
        for (var start = 0; start < sample.length; start += chunkSize) {

            // for each chunk, slice that part of the array and add it
            // to the output. The `.slice` function does not change
            // the original array.
            output.push(sample.slice(start, start + chunkSize));
        }
        return output;
    }

    // # shuffle_in_place
    //
    // A [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle)
    // in-place - which means that it will change the order of the original
    // array by reference.
    function shuffle_in_place(sample, randomSource) {

        // a custom random number source can be provided if you want to use
        // a fixed seed or another random number generator, like
        // [random-js](https://www.npmjs.org/package/random-js)
        randomSource = randomSource || Math.random;

        // store the current length of the sample to determine
        // when no elements remain to shuffle.
        var length = sample.length;

        // temporary is used to hold an item when it is being
        // swapped between indices.
        var temporary;

        // The index to swap at each stage.
        var index;

        // While there are still items to shuffle
        while (length > 0) {
            // chose a random index within the subset of the array
            // that is not yet shuffled
            index = Math.floor(randomSource() * length--);

            // store the value that we'll move temporarily
            temporary = sample[length];

            // swap the value at `sample[length]` with `sample[index]`
            sample[length] = sample[index];
            sample[index] = temporary;
        }

        return sample;
    }

    // # shuffle
    //
    // A [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle)
    // is a fast way to create a random permutation of a finite set.
    function shuffle(sample, randomSource) {
        // slice the original array so that it is not modified
        sample = sample.slice();

        // and then shuffle that shallow-copied array, in place
        return shuffle_in_place(sample.slice(), randomSource);
    }

    // # sample
    //
    // Create a [simple random sample](http://en.wikipedia.org/wiki/Simple_random_sample)
    // from a given array of `n` elements.
    function sample(array, n, randomSource) {
        // shuffle the original array using a fisher-yates shuffle
        var shuffled = shuffle(array, randomSource);

        // and then return a subset of it - the first `n` elements.
        return shuffled.slice(0, n);
    }

    // # quantile
    //
    // This is the internal implementation of quantiles: when you know
    // that the order is sorted, you don't need to re-sort it, and the computations
    // are much faster.
    function quantile_sorted(sample, p) {
        var idx = (sample.length) * p;
        if (p < 0 || p > 1) {
            return null;
        } else if (p === 1) {
            // If p is 1, directly return the last element
            return sample[sample.length - 1];
        } else if (p === 0) {
            // If p is 0, directly return the first element
            return sample[0];
        } else if (idx % 1 !== 0) {
            // If p is not integer, return the next element in array
            return sample[Math.ceil(idx) - 1];
        } else if (sample.length % 2 === 0) {
            // If the list has even-length, we'll take the average of this number
            // and the next value, if there is one
            return (sample[idx - 1] + sample[idx]) / 2;
        } else {
            // Finally, in the simple case of an integer value
            // with an odd-length list, return the sample value at the index.
            return sample[idx];
        }
    }

    // # quantile
    //
    // This is a population quantile, since we assume to know the entire
    // dataset in this library. Thus I'm trying to follow the
    // [Quantiles of a Population](http://en.wikipedia.org/wiki/Quantile#Quantiles_of_a_population)
    // algorithm from wikipedia.
    //
    // Sample is a one-dimensional array of numbers,
    // and p is either a decimal number from 0 to 1 or an array of decimal
    // numbers from 0 to 1.
    // In terms of a k/q quantile, p = k/q - it's just dealing with fractions or dealing
    // with decimal values.
    // When p is an array, the result of the function is also an array containing the appropriate
    // quantiles in input order
    function quantile(sample, p) {

        // We can't derive quantiles from an empty list
        if (sample.length === 0) return null;

        // Sort a copy of the array. We'll need a sorted array to index
        // the values in sorted order.
        var sorted = sample.slice().sort(function (a, b) { return a - b; });

        if (p.length) {
            // Initialize the result array
            var results = [];
            // For each requested quantile
            for (var i = 0; i < p.length; i++) {
                results[i] = quantile_sorted(sorted, p[i]);
            }
            return results;
        } else {
            return quantile_sorted(sorted, p);
        }
    }

    // # [Interquartile range](http://en.wikipedia.org/wiki/Interquartile_range)
    //
    // A measure of statistical dispersion, or how scattered, spread, or
    // concentrated a distribution is. It's computed as the difference between
    // the third quartile and first quartile.
    function iqr(sample) {
        // We can't derive quantiles from an empty list
        if (sample.length === 0) return null;

        // Interquartile range is the span between the upper quartile,
        // at `0.75`, and lower quartile, `0.25`
        return quantile(sample, 0.75) - quantile(sample, 0.25);
    }

    // # [Median Absolute Deviation](http://en.wikipedia.org/wiki/Median_absolute_deviation)
    //
    // The Median Absolute Deviation (MAD) is a robust measure of statistical
    // dispersion. It is more resilient to outliers than the standard deviation.
    function mad(x) {
        // The mad of nothing is null
        if (!x || x.length === 0) return null;

        var median_value = median(x),
            median_absolute_deviations = [];

        // Make a list of absolute deviations from the median
        for (var i = 0; i < x.length; i++) {
            median_absolute_deviations.push(Math.abs(x[i] - median_value));
        }

        // Find the median value of that list
        return median(median_absolute_deviations);
    }

    // ## Compute Matrices for Jenks
    //
    // Compute the matrices required for Jenks breaks. These matrices
    // can be used for any classing of data with `classes <= n_classes`
    function jenksMatrices(data, n_classes) {

        // in the original implementation, these matrices are referred to
        // as `LC` and `OP`
        //
        // * lower_class_limits (LC): optimal lower class limits
        // * variance_combinations (OP): optimal variance combinations for all classes
        var lower_class_limits = [],
            variance_combinations = [],
            // loop counters
            i, j,
            // the variance, as computed at each step in the calculation
            variance = 0;

        // Initialize and fill each matrix with zeroes
        for (i = 0; i < data.length + 1; i++) {
            var tmp1 = [], tmp2 = [];
            // despite these arrays having the same values, we need
            // to keep them separate so that changing one does not change
            // the other
            for (j = 0; j < n_classes + 1; j++) {
                tmp1.push(0);
                tmp2.push(0);
            }
            lower_class_limits.push(tmp1);
            variance_combinations.push(tmp2);
        }

        for (i = 1; i < n_classes + 1; i++) {
            lower_class_limits[1][i] = 1;
            variance_combinations[1][i] = 0;
            // in the original implementation, 9999999 is used but
            // since Javascript has `Infinity`, we use that.
            for (j = 2; j < data.length + 1; j++) {
                variance_combinations[j][i] = Infinity;
            }
        }

        for (var l = 2; l < data.length + 1; l++) {

            // `SZ` originally. this is the sum of the values seen thus
            // far when calculating variance.
            var sum = 0,
                // `ZSQ` originally. the sum of squares of values seen
                // thus far
                sum_squares = 0,
                // `WT` originally. This is the number of
                w = 0,
                // `IV` originally
                i4 = 0;

            // in several instances, you could say `Math.pow(x, 2)`
            // instead of `x * x`, but this is slower in some browsers
            // introduces an unnecessary concept.
            for (var m = 1; m < l + 1; m++) {

                // `III` originally
                var lower_class_limit = l - m + 1,
                    val = data[lower_class_limit - 1];

                // here we're estimating variance for each potential classing
                // of the data, for each potential number of classes. `w`
                // is the number of data points considered so far.
                w++;

                // increase the current sum and sum-of-squares
                sum += val;
                sum_squares += val * val;

                // the variance at this point in the sequence is the difference
                // between the sum of squares and the total x 2, over the number
                // of samples.
                variance = sum_squares - (sum * sum) / w;

                i4 = lower_class_limit - 1;

                if (i4 !== 0) {
                    for (j = 2; j < n_classes + 1; j++) {
                        // if adding this element to an existing class
                        // will increase its variance beyond the limit, break
                        // the class at this point, setting the `lower_class_limit`
                        // at this point.
                        if (variance_combinations[l][j] >=
                            (variance + variance_combinations[i4][j - 1])) {
                            lower_class_limits[l][j] = lower_class_limit;
                            variance_combinations[l][j] = variance +
                                variance_combinations[i4][j - 1];
                        }
                    }
                }
            }

            lower_class_limits[l][1] = 1;
            variance_combinations[l][1] = variance;
        }

        // return the two matrices. for just providing breaks, only
        // `lower_class_limits` is needed, but variances can be useful to
        // evaluate goodness of fit.
        return {
            lower_class_limits: lower_class_limits,
            variance_combinations: variance_combinations
        };
    }

    // ## Pull Breaks Values for Jenks
    //
    // the second part of the jenks recipe: take the calculated matrices
    // and derive an array of n breaks.
    function jenksBreaks(data, lower_class_limits, n_classes) {

        var k = data.length,
            kclass = [],
            countNum = n_classes;

        // the calculation of classes will never include the upper
        // bound, so we need to explicitly set it
        kclass[n_classes] = data[data.length - 1];

        // the lower_class_limits matrix is used as indices into itself
        // here: the `k` variable is reused in each iteration.
        while (countNum > 0) {
            kclass[countNum - 1] = data[lower_class_limits[k][countNum] - 1];
            k = lower_class_limits[k][countNum] - 1;
            countNum--;
        }

        return kclass;
    }

    // # [Jenks natural breaks optimization](http://en.wikipedia.org/wiki/Jenks_natural_breaks_optimization)
    //
    // Implementations: [1](http://danieljlewis.org/files/2010/06/Jenks.pdf) (python),
    // [2](https://github.com/vvoovv/djeo-jenks/blob/master/main.js) (buggy),
    // [3](https://github.com/simogeo/geostats/blob/master/lib/geostats.js#L407) (works)
    //
    // Depends on `jenksBreaks()` and `jenksMatrices()`
    function jenks(data, n_classes) {

        if (n_classes > data.length) return null;

        // sort data in numerical order, since this is expected
        // by the matrices function
        data = data.slice().sort(function (a, b) { return a - b; });

        // get our basic matrices
        var matrices = jenksMatrices(data, n_classes),
            // we only need lower class limits here
            lower_class_limits = matrices.lower_class_limits;

        // extract n_classes out of the computed matrices
        return jenksBreaks(data, lower_class_limits, n_classes);

    }

    // # [Skewness](http://en.wikipedia.org/wiki/Skewness)
    //
    // A measure of the extent to which a probability distribution of a
    // real-valued random variable "leans" to one side of the mean.
    // The skewness value can be positive or negative, or even undefined.
    //
    // Implementation is based on the adjusted Fisher-Pearson standardized
    // moment coefficient, which is the version found in Excel and several
    // statistical packages including Minitab, SAS and SPSS.
    //
    // Depends on `sum_nth_power_deviations()` and `sample_standard_deviation`
    function sample_skewness(x) {
        // The skewness of less than three arguments is null
        if (x.length < 3) return null;

        var n = x.length,
            cubed_s = Math.pow(sample_standard_deviation(x), 3),
            sum_cubed_deviations = sum_nth_power_deviations(x, 3);

        return n * sum_cubed_deviations / ((n - 1) * (n - 2) * cubed_s);
    }

    // # Standard Normal Table
    // A standard normal table, also called the unit normal table or Z table,
    // is a mathematical table for the values of Φ (phi), which are the values of
    // the cumulative distribution function of the normal distribution.
    // It is used to find the probability that a statistic is observed below,
    // above, or between values on the standard normal distribution, and by
    // extension, any normal distribution.
    //
    // The probabilities are taken from http://en.wikipedia.org/wiki/Standard_normal_table
    // The table used is the cumulative, and not cumulative from 0 to mean
    // (even though the latter has 5 digits precision, instead of 4).
    var standard_normal_table = [
        /*  z      0.00    0.01    0.02    0.03    0.04    0.05    0.06    0.07    0.08    0.09 */
        /* 0.0 */
        0.5000, 0.5040, 0.5080, 0.5120, 0.5160, 0.5199, 0.5239, 0.5279, 0.5319, 0.5359,
        /* 0.1 */
        0.5398, 0.5438, 0.5478, 0.5517, 0.5557, 0.5596, 0.5636, 0.5675, 0.5714, 0.5753,
        /* 0.2 */
        0.5793, 0.5832, 0.5871, 0.5910, 0.5948, 0.5987, 0.6026, 0.6064, 0.6103, 0.6141,
        /* 0.3 */
        0.6179, 0.6217, 0.6255, 0.6293, 0.6331, 0.6368, 0.6406, 0.6443, 0.6480, 0.6517,
        /* 0.4 */
        0.6554, 0.6591, 0.6628, 0.6664, 0.6700, 0.6736, 0.6772, 0.6808, 0.6844, 0.6879,
        /* 0.5 */
        0.6915, 0.6950, 0.6985, 0.7019, 0.7054, 0.7088, 0.7123, 0.7157, 0.7190, 0.7224,
        /* 0.6 */
        0.7257, 0.7291, 0.7324, 0.7357, 0.7389, 0.7422, 0.7454, 0.7486, 0.7517, 0.7549,
        /* 0.7 */
        0.7580, 0.7611, 0.7642, 0.7673, 0.7704, 0.7734, 0.7764, 0.7794, 0.7823, 0.7852,
        /* 0.8 */
        0.7881, 0.7910, 0.7939, 0.7967, 0.7995, 0.8023, 0.8051, 0.8078, 0.8106, 0.8133,
        /* 0.9 */
        0.8159, 0.8186, 0.8212, 0.8238, 0.8264, 0.8289, 0.8315, 0.8340, 0.8365, 0.8389,
        /* 1.0 */
        0.8413, 0.8438, 0.8461, 0.8485, 0.8508, 0.8531, 0.8554, 0.8577, 0.8599, 0.8621,
        /* 1.1 */
        0.8643, 0.8665, 0.8686, 0.8708, 0.8729, 0.8749, 0.8770, 0.8790, 0.8810, 0.8830,
        /* 1.2 */
        0.8849, 0.8869, 0.8888, 0.8907, 0.8925, 0.8944, 0.8962, 0.8980, 0.8997, 0.9015,
        /* 1.3 */
        0.9032, 0.9049, 0.9066, 0.9082, 0.9099, 0.9115, 0.9131, 0.9147, 0.9162, 0.9177,
        /* 1.4 */
        0.9192, 0.9207, 0.9222, 0.9236, 0.9251, 0.9265, 0.9279, 0.9292, 0.9306, 0.9319,
        /* 1.5 */
        0.9332, 0.9345, 0.9357, 0.9370, 0.9382, 0.9394, 0.9406, 0.9418, 0.9429, 0.9441,
        /* 1.6 */
        0.9452, 0.9463, 0.9474, 0.9484, 0.9495, 0.9505, 0.9515, 0.9525, 0.9535, 0.9545,
        /* 1.7 */
        0.9554, 0.9564, 0.9573, 0.9582, 0.9591, 0.9599, 0.9608, 0.9616, 0.9625, 0.9633,
        /* 1.8 */
        0.9641, 0.9649, 0.9656, 0.9664, 0.9671, 0.9678, 0.9686, 0.9693, 0.9699, 0.9706,
        /* 1.9 */
        0.9713, 0.9719, 0.9726, 0.9732, 0.9738, 0.9744, 0.9750, 0.9756, 0.9761, 0.9767,
        /* 2.0 */
        0.9772, 0.9778, 0.9783, 0.9788, 0.9793, 0.9798, 0.9803, 0.9808, 0.9812, 0.9817,
        /* 2.1 */
        0.9821, 0.9826, 0.9830, 0.9834, 0.9838, 0.9842, 0.9846, 0.9850, 0.9854, 0.9857,
        /* 2.2 */
        0.9861, 0.9864, 0.9868, 0.9871, 0.9875, 0.9878, 0.9881, 0.9884, 0.9887, 0.9890,
        /* 2.3 */
        0.9893, 0.9896, 0.9898, 0.9901, 0.9904, 0.9906, 0.9909, 0.9911, 0.9913, 0.9916,
        /* 2.4 */
        0.9918, 0.9920, 0.9922, 0.9925, 0.9927, 0.9929, 0.9931, 0.9932, 0.9934, 0.9936,
        /* 2.5 */
        0.9938, 0.9940, 0.9941, 0.9943, 0.9945, 0.9946, 0.9948, 0.9949, 0.9951, 0.9952,
        /* 2.6 */
        0.9953, 0.9955, 0.9956, 0.9957, 0.9959, 0.9960, 0.9961, 0.9962, 0.9963, 0.9964,
        /* 2.7 */
        0.9965, 0.9966, 0.9967, 0.9968, 0.9969, 0.9970, 0.9971, 0.9972, 0.9973, 0.9974,
        /* 2.8 */
        0.9974, 0.9975, 0.9976, 0.9977, 0.9977, 0.9978, 0.9979, 0.9979, 0.9980, 0.9981,
        /* 2.9 */
        0.9981, 0.9982, 0.9982, 0.9983, 0.9984, 0.9984, 0.9985, 0.9985, 0.9986, 0.9986,
        /* 3.0 */
        0.9987, 0.9987, 0.9987, 0.9988, 0.9988, 0.9989, 0.9989, 0.9989, 0.9990, 0.9990
    ];

    // # [Gaussian error function](http://en.wikipedia.org/wiki/Error_function)
    //
    // The error_function(x/(sd * Math.sqrt(2))) is the probability that a value in a
    // normal distribution with standard deviation sd is within x of the mean.
    //
    // This function returns a numerical approximation to the exact value.
    function error_function(x) {
        var t = 1 / (1 + 0.5 * Math.abs(x));
        var tau = t * Math.exp(-Math.pow(x, 2) -
            1.26551223 +
            1.00002368 * t +
            0.37409196 * Math.pow(t, 2) +
            0.09678418 * Math.pow(t, 3) -
            0.18628806 * Math.pow(t, 4) +
            0.27886807 * Math.pow(t, 5) -
            1.13520398 * Math.pow(t, 6) +
            1.48851587 * Math.pow(t, 7) -
            0.82215223 * Math.pow(t, 8) +
            0.17087277 * Math.pow(t, 9));
        if (x >= 0) {
            return 1 - tau;
        } else {
            return tau - 1;
        }
    }

    // # [Cumulative Standard Normal Probability](http://en.wikipedia.org/wiki/Standard_normal_table)
    //
    // Since probability tables cannot be
    // printed for every normal distribution, as there are an infinite variety
    // of normal distributions, it is common practice to convert a normal to a
    // standard normal and then use the standard normal table to find probabilities.
    //
    // You can use .5 + .5 * error_function(x / Math.sqrt(2)) to calculate the probability
    // instead of looking it up in a table.
    function cumulative_std_normal_probability(z) {

        // Calculate the position of this value.
        var absZ = Math.abs(z),
            // Each row begins with a different
            // significant digit: 0.5, 0.6, 0.7, and so on. Each value in the table
            // corresponds to a range of 0.01 in the input values, so the value is
            // multiplied by 100.
            index = Math.min(Math.round(absZ * 100), standard_normal_table.length - 1);

        // The index we calculate must be in the table as a positive value,
        // but we still pay attention to whether the input is positive
        // or negative, and flip the output value as a last step.
        if (z >= 0) {
            return standard_normal_table[index];
        } else {
            // due to floating-point arithmetic, values in the table with
            // 4 significant figures can nevertheless end up as repeating
            // fractions when they're computed here.
            return +(1 - standard_normal_table[index]).toFixed(4);
        }
    }

    // # [Z-Score, or Standard Score](http://en.wikipedia.org/wiki/Standard_score)
    //
    // The standard score is the number of standard deviations an observation
    // or datum is above or below the mean. Thus, a positive standard score
    // represents a datum above the mean, while a negative standard score
    // represents a datum below the mean. It is a dimensionless quantity
    // obtained by subtracting the population mean from an individual raw
    // score and then dividing the difference by the population standard
    // deviation.
    //
    // The z-score is only defined if one knows the population parameters;
    // if one only has a sample set, then the analogous computation with
    // sample mean and sample standard deviation yields the
    // Student's t-statistic.
    function z_score(x, mean, standard_deviation) {
        return (x - mean) / standard_deviation;
    }

    // We use `ε`, epsilon, as a stopping criterion when we want to iterate
    // until we're "close enough".
    var epsilon = 0.0001;

    // # [Factorial](https://en.wikipedia.org/wiki/Factorial)
    //
    // A factorial, usually written n!, is the product of all positive
    // integers less than or equal to n. Often factorial is implemented
    // recursively, but this iterative approach is significantly faster
    // and simpler.
    function factorial(n) {

        // factorial is mathematically undefined for negative numbers
        if (n < 0 ) { return null; }

        // typically you'll expand the factorial function going down, like
        // 5! = 5 * 4 * 3 * 2 * 1. This is going in the opposite direction,
        // counting from 2 up to the number in question, and since anything
        // multiplied by 1 is itself, the loop only needs to start at 2.
        var accumulator = 1;
        for (var i = 2; i <= n; i++) {
            // for each number up to and including the number `n`, multiply
            // the accumulator my that number.
            accumulator *= i;
        }
        return accumulator;
    }

    // # Binomial Distribution
    //
    // The [Binomial Distribution](http://en.wikipedia.org/wiki/Binomial_distribution) is the discrete probability
    // distribution of the number of successes in a sequence of n independent yes/no experiments, each of which yields
    // success with probability `probability`. Such a success/failure experiment is also called a Bernoulli experiment or
    // Bernoulli trial; when trials = 1, the Binomial Distribution is a Bernoulli Distribution.
    function binomial_distribution(trials, probability) {
        // Check that `p` is a valid probability (0 ≤ p ≤ 1),
        // that `n` is an integer, strictly positive.
        if (probability < 0 || probability > 1 ||
            trials <= 0 || trials % 1 !== 0) {
            return null;
        }

        // a [probability mass function](https://en.wikipedia.org/wiki/Probability_mass_function)
        function probability_mass(x, trials, probability) {
            return factorial(trials) /
                (factorial(x) * factorial(trials - x)) *
                (Math.pow(probability, x) * Math.pow(1 - probability, trials - x));
        }

        // We initialize `x`, the random variable, and `accumulator`, an accumulator
        // for the cumulative distribution function to 0. `distribution_functions`
        // is the object we'll return with the `probability_of_x` and the
        // `cumulative_probability_of_x`, as well as the calculated mean &
        // variance. We iterate until the `cumulative_probability_of_x` is
        // within `epsilon` of 1.0.
        var x = 0,
            cumulative_probability = 0,
            cells = {};

        // This algorithm iterates through each potential outcome,
        // until the `cumulative_probability` is very close to 1, at
        // which point we've defined the vast majority of outcomes
        do {
            cells[x] = probability_mass(x, trials, probability);
            cumulative_probability += cells[x];
            x++;
        // when the cumulative_probability is nearly 1, we've calculated
        // the useful range of this distribution
        } while (cumulative_probability < 1 - epsilon);

        return cells;
    }

    // # Bernoulli Distribution
    //
    // The [Bernoulli distribution](http://en.wikipedia.org/wiki/Bernoulli_distribution)
    // is the probability discrete
    // distribution of a random variable which takes value 1 with success
    // probability `p` and value 0 with failure
    // probability `q` = 1 - `p`. It can be used, for example, to represent the
    // toss of a coin, where "1" is defined to mean "heads" and "0" is defined
    // to mean "tails" (or vice versa). It is
    // a special case of a Binomial Distribution
    // where `n` = 1.
    function bernoulli_distribution(p) {
        // Check that `p` is a valid probability (0 ≤ p ≤ 1)
        if (p < 0 || p > 1 ) { return null; }

        return binomial_distribution(1, p);
    }

    // # Poisson Distribution
    //
    // The [Poisson Distribution](http://en.wikipedia.org/wiki/Poisson_distribution)
    // is a discrete probability distribution that expresses the probability
    // of a given number of events occurring in a fixed interval of time
    // and/or space if these events occur with a known average rate and
    // independently of the time since the last event.
    //
    // The Poisson Distribution is characterized by the strictly positive
    // mean arrival or occurrence rate, `λ`.
    function poisson_distribution(lambda) {
        // Check that lambda is strictly positive
        if (lambda <= 0) { return null; }

        // our current place in the distribution
        var x = 0,
            // and we keep track of the current cumulative probability, in
            // order to know when to stop calculating chances.
            cumulative_probability = 0,
            // the calculated cells to be returned
            cells = {};

        // a [probability mass function](https://en.wikipedia.org/wiki/Probability_mass_function)
        function probability_mass(x, lambda) {
            return (Math.pow(Math.E, -lambda) * Math.pow(lambda, x)) /
                factorial(x);
        }

        // This algorithm iterates through each potential outcome,
        // until the `cumulative_probability` is very close to 1, at
        // which point we've defined the vast majority of outcomes
        do {
            cells[x] = probability_mass(x, lambda);
            cumulative_probability += cells[x];
            x++;
        // when the cumulative_probability is nearly 1, we've calculated
        // the useful range of this distribution
        } while (cumulative_probability < 1 - epsilon);

        return cells;
    }

    // # Percentage Points of the χ2 (Chi-Squared) Distribution
    // The [χ2 (Chi-Squared) Distribution](http://en.wikipedia.org/wiki/Chi-squared_distribution) is used in the common
    // chi-squared tests for goodness of fit of an observed distribution to a theoretical one, the independence of two
    // criteria of classification of qualitative data, and in confidence interval estimation for a population standard
    // deviation of a normal distribution from a sample standard deviation.
    //
    // Values from Appendix 1, Table III of William W. Hines & Douglas C. Montgomery, "Probability and Statistics in
    // Engineering and Management Science", Wiley (1980).
    var chi_squared_distribution_table = {
        1: { 0.995:  0.00, 0.99:  0.00, 0.975:  0.00, 0.95:  0.00, 0.9:  0.02, 0.5:  0.45, 0.1:  2.71, 0.05:  3.84, 0.025:  5.02, 0.01:  6.63, 0.005:  7.88 },
        2: { 0.995:  0.01, 0.99:  0.02, 0.975:  0.05, 0.95:  0.10, 0.9:  0.21, 0.5:  1.39, 0.1:  4.61, 0.05:  5.99, 0.025:  7.38, 0.01:  9.21, 0.005: 10.60 },
        3: { 0.995:  0.07, 0.99:  0.11, 0.975:  0.22, 0.95:  0.35, 0.9:  0.58, 0.5:  2.37, 0.1:  6.25, 0.05:  7.81, 0.025:  9.35, 0.01: 11.34, 0.005: 12.84 },
        4: { 0.995:  0.21, 0.99:  0.30, 0.975:  0.48, 0.95:  0.71, 0.9:  1.06, 0.5:  3.36, 0.1:  7.78, 0.05:  9.49, 0.025: 11.14, 0.01: 13.28, 0.005: 14.86 },
        5: { 0.995:  0.41, 0.99:  0.55, 0.975:  0.83, 0.95:  1.15, 0.9:  1.61, 0.5:  4.35, 0.1:  9.24, 0.05: 11.07, 0.025: 12.83, 0.01: 15.09, 0.005: 16.75 },
        6: { 0.995:  0.68, 0.99:  0.87, 0.975:  1.24, 0.95:  1.64, 0.9:  2.20, 0.5:  5.35, 0.1: 10.65, 0.05: 12.59, 0.025: 14.45, 0.01: 16.81, 0.005: 18.55 },
        7: { 0.995:  0.99, 0.99:  1.25, 0.975:  1.69, 0.95:  2.17, 0.9:  2.83, 0.5:  6.35, 0.1: 12.02, 0.05: 14.07, 0.025: 16.01, 0.01: 18.48, 0.005: 20.28 },
        8: { 0.995:  1.34, 0.99:  1.65, 0.975:  2.18, 0.95:  2.73, 0.9:  3.49, 0.5:  7.34, 0.1: 13.36, 0.05: 15.51, 0.025: 17.53, 0.01: 20.09, 0.005: 21.96 },
        9: { 0.995:  1.73, 0.99:  2.09, 0.975:  2.70, 0.95:  3.33, 0.9:  4.17, 0.5:  8.34, 0.1: 14.68, 0.05: 16.92, 0.025: 19.02, 0.01: 21.67, 0.005: 23.59 },
        10: { 0.995:  2.16, 0.99:  2.56, 0.975:  3.25, 0.95:  3.94, 0.9:  4.87, 0.5:  9.34, 0.1: 15.99, 0.05: 18.31, 0.025: 20.48, 0.01: 23.21, 0.005: 25.19 },
        11: { 0.995:  2.60, 0.99:  3.05, 0.975:  3.82, 0.95:  4.57, 0.9:  5.58, 0.5: 10.34, 0.1: 17.28, 0.05: 19.68, 0.025: 21.92, 0.01: 24.72, 0.005: 26.76 },
        12: { 0.995:  3.07, 0.99:  3.57, 0.975:  4.40, 0.95:  5.23, 0.9:  6.30, 0.5: 11.34, 0.1: 18.55, 0.05: 21.03, 0.025: 23.34, 0.01: 26.22, 0.005: 28.30 },
        13: { 0.995:  3.57, 0.99:  4.11, 0.975:  5.01, 0.95:  5.89, 0.9:  7.04, 0.5: 12.34, 0.1: 19.81, 0.05: 22.36, 0.025: 24.74, 0.01: 27.69, 0.005: 29.82 },
        14: { 0.995:  4.07, 0.99:  4.66, 0.975:  5.63, 0.95:  6.57, 0.9:  7.79, 0.5: 13.34, 0.1: 21.06, 0.05: 23.68, 0.025: 26.12, 0.01: 29.14, 0.005: 31.32 },
        15: { 0.995:  4.60, 0.99:  5.23, 0.975:  6.27, 0.95:  7.26, 0.9:  8.55, 0.5: 14.34, 0.1: 22.31, 0.05: 25.00, 0.025: 27.49, 0.01: 30.58, 0.005: 32.80 },
        16: { 0.995:  5.14, 0.99:  5.81, 0.975:  6.91, 0.95:  7.96, 0.9:  9.31, 0.5: 15.34, 0.1: 23.54, 0.05: 26.30, 0.025: 28.85, 0.01: 32.00, 0.005: 34.27 },
        17: { 0.995:  5.70, 0.99:  6.41, 0.975:  7.56, 0.95:  8.67, 0.9: 10.09, 0.5: 16.34, 0.1: 24.77, 0.05: 27.59, 0.025: 30.19, 0.01: 33.41, 0.005: 35.72 },
        18: { 0.995:  6.26, 0.99:  7.01, 0.975:  8.23, 0.95:  9.39, 0.9: 10.87, 0.5: 17.34, 0.1: 25.99, 0.05: 28.87, 0.025: 31.53, 0.01: 34.81, 0.005: 37.16 },
        19: { 0.995:  6.84, 0.99:  7.63, 0.975:  8.91, 0.95: 10.12, 0.9: 11.65, 0.5: 18.34, 0.1: 27.20, 0.05: 30.14, 0.025: 32.85, 0.01: 36.19, 0.005: 38.58 },
        20: { 0.995:  7.43, 0.99:  8.26, 0.975:  9.59, 0.95: 10.85, 0.9: 12.44, 0.5: 19.34, 0.1: 28.41, 0.05: 31.41, 0.025: 34.17, 0.01: 37.57, 0.005: 40.00 },
        21: { 0.995:  8.03, 0.99:  8.90, 0.975: 10.28, 0.95: 11.59, 0.9: 13.24, 0.5: 20.34, 0.1: 29.62, 0.05: 32.67, 0.025: 35.48, 0.01: 38.93, 0.005: 41.40 },
        22: { 0.995:  8.64, 0.99:  9.54, 0.975: 10.98, 0.95: 12.34, 0.9: 14.04, 0.5: 21.34, 0.1: 30.81, 0.05: 33.92, 0.025: 36.78, 0.01: 40.29, 0.005: 42.80 },
        23: { 0.995:  9.26, 0.99: 10.20, 0.975: 11.69, 0.95: 13.09, 0.9: 14.85, 0.5: 22.34, 0.1: 32.01, 0.05: 35.17, 0.025: 38.08, 0.01: 41.64, 0.005: 44.18 },
        24: { 0.995:  9.89, 0.99: 10.86, 0.975: 12.40, 0.95: 13.85, 0.9: 15.66, 0.5: 23.34, 0.1: 33.20, 0.05: 36.42, 0.025: 39.36, 0.01: 42.98, 0.005: 45.56 },
        25: { 0.995: 10.52, 0.99: 11.52, 0.975: 13.12, 0.95: 14.61, 0.9: 16.47, 0.5: 24.34, 0.1: 34.28, 0.05: 37.65, 0.025: 40.65, 0.01: 44.31, 0.005: 46.93 },
        26: { 0.995: 11.16, 0.99: 12.20, 0.975: 13.84, 0.95: 15.38, 0.9: 17.29, 0.5: 25.34, 0.1: 35.56, 0.05: 38.89, 0.025: 41.92, 0.01: 45.64, 0.005: 48.29 },
        27: { 0.995: 11.81, 0.99: 12.88, 0.975: 14.57, 0.95: 16.15, 0.9: 18.11, 0.5: 26.34, 0.1: 36.74, 0.05: 40.11, 0.025: 43.19, 0.01: 46.96, 0.005: 49.65 },
        28: { 0.995: 12.46, 0.99: 13.57, 0.975: 15.31, 0.95: 16.93, 0.9: 18.94, 0.5: 27.34, 0.1: 37.92, 0.05: 41.34, 0.025: 44.46, 0.01: 48.28, 0.005: 50.99 },
        29: { 0.995: 13.12, 0.99: 14.26, 0.975: 16.05, 0.95: 17.71, 0.9: 19.77, 0.5: 28.34, 0.1: 39.09, 0.05: 42.56, 0.025: 45.72, 0.01: 49.59, 0.005: 52.34 },
        30: { 0.995: 13.79, 0.99: 14.95, 0.975: 16.79, 0.95: 18.49, 0.9: 20.60, 0.5: 29.34, 0.1: 40.26, 0.05: 43.77, 0.025: 46.98, 0.01: 50.89, 0.005: 53.67 },
        40: { 0.995: 20.71, 0.99: 22.16, 0.975: 24.43, 0.95: 26.51, 0.9: 29.05, 0.5: 39.34, 0.1: 51.81, 0.05: 55.76, 0.025: 59.34, 0.01: 63.69, 0.005: 66.77 },
        50: { 0.995: 27.99, 0.99: 29.71, 0.975: 32.36, 0.95: 34.76, 0.9: 37.69, 0.5: 49.33, 0.1: 63.17, 0.05: 67.50, 0.025: 71.42, 0.01: 76.15, 0.005: 79.49 },
        60: { 0.995: 35.53, 0.99: 37.48, 0.975: 40.48, 0.95: 43.19, 0.9: 46.46, 0.5: 59.33, 0.1: 74.40, 0.05: 79.08, 0.025: 83.30, 0.01: 88.38, 0.005: 91.95 },
        70: { 0.995: 43.28, 0.99: 45.44, 0.975: 48.76, 0.95: 51.74, 0.9: 55.33, 0.5: 69.33, 0.1: 85.53, 0.05: 90.53, 0.025: 95.02, 0.01: 100.42, 0.005: 104.22 },
        80: { 0.995: 51.17, 0.99: 53.54, 0.975: 57.15, 0.95: 60.39, 0.9: 64.28, 0.5: 79.33, 0.1: 96.58, 0.05: 101.88, 0.025: 106.63, 0.01: 112.33, 0.005: 116.32 },
        90: { 0.995: 59.20, 0.99: 61.75, 0.975: 65.65, 0.95: 69.13, 0.9: 73.29, 0.5: 89.33, 0.1: 107.57, 0.05: 113.14, 0.025: 118.14, 0.01: 124.12, 0.005: 128.30 },
        100: { 0.995: 67.33, 0.99: 70.06, 0.975: 74.22, 0.95: 77.93, 0.9: 82.36, 0.5: 99.33, 0.1: 118.50, 0.05: 124.34, 0.025: 129.56, 0.01: 135.81, 0.005: 140.17 }
    };

    // # χ2 (Chi-Squared) Goodness-of-Fit Test
    //
    // The [χ2 (Chi-Squared) Goodness-of-Fit Test](http://en.wikipedia.org/wiki/Goodness_of_fit#Pearson.27s_chi-squared_test)
    // uses a measure of goodness of fit which is the sum of differences between observed and expected outcome frequencies
    // (that is, counts of observations), each squared and divided by the number of observations expected given the
    // hypothesized distribution. The resulting χ2 statistic, `chi_squared`, can be compared to the chi-squared distribution
    // to determine the goodness of fit. In order to determine the degrees of freedom of the chi-squared distribution, one
    // takes the total number of observed frequencies and subtracts the number of estimated parameters. The test statistic
    // follows, approximately, a chi-square distribution with (k − c) degrees of freedom where `k` is the number of non-empty
    // cells and `c` is the number of estimated parameters for the distribution.
    function chi_squared_goodness_of_fit(data, distribution_type, significance) {
        // Estimate from the sample data, a weighted mean.
        var input_mean = mean(data),
            // Calculated value of the χ2 statistic.
            chi_squared = 0,
            // Degrees of freedom, calculated as (number of class intervals -
            // number of hypothesized distribution parameters estimated - 1)
            degrees_of_freedom,
            // Number of hypothesized distribution parameters estimated, expected to be supplied in the distribution test.
            // Lose one degree of freedom for estimating `lambda` from the sample data.
            c = 1,
            // The hypothesized distribution.
            // Generate the hypothesized distribution.
            hypothesized_distribution = distribution_type(input_mean),
            observed_frequencies = [],
            expected_frequencies = [],
            k;

        // Create an array holding a histogram from the sample data, of
        // the form `{ value: numberOfOcurrences }`
        for (var i = 0; i < data.length; i++) {
            if (observed_frequencies[data[i]] === undefined) {
                observed_frequencies[data[i]] = 0;
            }
            observed_frequencies[data[i]]++;
        }

        // The histogram we created might be sparse - there might be gaps
        // between values. So we iterate through the histogram, making
        // sure that instead of undefined, gaps have 0 values.
        for (i = 0; i < observed_frequencies.length; i++) {
            if (observed_frequencies[i] === undefined) {
                observed_frequencies[i] = 0;
            }
        }

        // Create an array holding a histogram of expected data given the
        // sample size and hypothesized distribution.
        for (k in hypothesized_distribution) {
            if (k in observed_frequencies) {
                expected_frequencies[k] = hypothesized_distribution[k] * data.length;
            }
        }

        // Working backward through the expected frequencies, collapse classes
        // if less than three observations are expected for a class.
        // This transformation is applied to the observed frequencies as well.
        for (k = expected_frequencies.length - 1; k >= 0; k--) {
            if (expected_frequencies[k] < 3) {
                expected_frequencies[k - 1] += expected_frequencies[k];
                expected_frequencies.pop();

                observed_frequencies[k - 1] += observed_frequencies[k];
                observed_frequencies.pop();
            }
        }

        // Iterate through the squared differences between observed & expected
        // frequencies, accumulating the `chi_squared` statistic.
        for (k = 0; k < observed_frequencies.length; k++) {
            chi_squared += Math.pow(
                observed_frequencies[k] - expected_frequencies[k], 2) /
                expected_frequencies[k];
        }

        // Calculate degrees of freedom for this test and look it up in the
        // `chi_squared_distribution_table` in order to
        // accept or reject the goodness-of-fit of the hypothesized distribution.
        degrees_of_freedom = observed_frequencies.length - c - 1;
        return chi_squared_distribution_table[degrees_of_freedom][significance] < chi_squared;
    }

    // # Mixin
    //
    // Mixin simple_statistics to a single Array instance if provided
    // or the Array native object if not. This is an optional
    // feature that lets you treat simple_statistics as a native feature
    // of Javascript.
    function mixin(array) {
        var support = !!(Object.defineProperty && Object.defineProperties);
        // Coverage testing will never test this error.
        /* istanbul ignore next */
        if (!support) throw new Error('without defineProperty, simple-statistics cannot be mixed in');

        // only methods which work on basic arrays in a single step
        // are supported
        var arrayMethods = ['median', 'standard_deviation', 'sum',
            'sample_skewness',
            'mean', 'min', 'max', 'quantile', 'geometric_mean',
            'harmonic_mean', 'root_mean_square'];

        // create a closure with a method name so that a reference
        // like `arrayMethods[i]` doesn't follow the loop increment
        function wrap(method) {
            return function() {
                // cast any arguments into an array, since they're
                // natively objects
                var args = Array.prototype.slice.apply(arguments);
                // make the first argument the array itself
                args.unshift(this);
                // return the result of the ss method
                return ss[method].apply(ss, args);
            };
        }

        // select object to extend
        var extending;
        if (array) {
            // create a shallow copy of the array so that our internal
            // operations do not change it by reference
            extending = array.slice();
        } else {
            extending = Array.prototype;
        }

        // for each array function, define a function that gets
        // the array as the first argument.
        // We use [defineProperty](https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/defineProperty)
        // because it allows these properties to be non-enumerable:
        // `for (var in x)` loops will not run into problems with this
        // implementation.
        for (var i = 0; i < arrayMethods.length; i++) {
            Object.defineProperty(extending, arrayMethods[i], {
                value: wrap(arrayMethods[i]),
                configurable: true,
                enumerable: false,
                writable: true
            });
        }

        return extending;
    }

    ss.linear_regression = linear_regression;
    ss.standard_deviation = standard_deviation;
    ss.r_squared = r_squared;
    ss.median = median;
    ss.mean = mean;
    ss.mode = mode;
    ss.min = min;
    ss.max = max;
    ss.sum = sum;
    ss.quantile = quantile;
    ss.quantile_sorted = quantile_sorted;
    ss.iqr = iqr;
    ss.mad = mad;

    ss.chunk = chunk;
    ss.shuffle = shuffle;
    ss.shuffle_in_place = shuffle_in_place;

    ss.sample = sample;

    ss.sample_covariance = sample_covariance;
    ss.sample_correlation = sample_correlation;
    ss.sample_variance = sample_variance;
    ss.sample_standard_deviation = sample_standard_deviation;
    ss.sample_skewness = sample_skewness;

    ss.geometric_mean = geometric_mean;
    ss.harmonic_mean = harmonic_mean;
    ss.root_mean_square = root_mean_square;
    ss.variance = variance;
    ss.t_test = t_test;
    ss.t_test_two_sample = t_test_two_sample;

    // jenks
    ss.jenksMatrices = jenksMatrices;
    ss.jenksBreaks = jenksBreaks;
    ss.jenks = jenks;

    ss.bayesian = bayesian;

    // Distribution-related methods
    ss.epsilon = epsilon; // We make ε available to the test suite.
    ss.factorial = factorial;
    ss.bernoulli_distribution = bernoulli_distribution;
    ss.binomial_distribution = binomial_distribution;
    ss.poisson_distribution = poisson_distribution;
    ss.chi_squared_goodness_of_fit = chi_squared_goodness_of_fit;

    // Normal distribution
    ss.z_score = z_score;
    ss.cumulative_std_normal_probability = cumulative_std_normal_probability;
    ss.standard_normal_table = standard_normal_table;
    ss.error_function = error_function;

    // Alias this into its common name
    ss.average = mean;
    ss.interquartile_range = iqr;
    ss.mixin = mixin;
    ss.median_absolute_deviation = mad;
    ss.rms = root_mean_square;
    ss.erf = error_function;

})(this);

},{}],120:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');
var has = Object.prototype.hasOwnProperty;
var hasNativeMap = typeof Map !== "undefined";

/**
 * A data structure which is a combination of an array and a set. Adding a new
 * member is O(1), testing for membership is O(1), and finding the index of an
 * element is O(1). Removing elements from the set is not supported. Only
 * strings are supported for membership.
 */
function ArraySet() {
  this._array = [];
  this._set = hasNativeMap ? new Map() : Object.create(null);
}

/**
 * Static method for creating ArraySet instances from an existing array.
 */
ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
  var set = new ArraySet();
  for (var i = 0, len = aArray.length; i < len; i++) {
    set.add(aArray[i], aAllowDuplicates);
  }
  return set;
};

/**
 * Return how many unique items are in this ArraySet. If duplicates have been
 * added, than those do not count towards the size.
 *
 * @returns Number
 */
ArraySet.prototype.size = function ArraySet_size() {
  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
};

/**
 * Add the given string to this set.
 *
 * @param String aStr
 */
ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
  var idx = this._array.length;
  if (!isDuplicate || aAllowDuplicates) {
    this._array.push(aStr);
  }
  if (!isDuplicate) {
    if (hasNativeMap) {
      this._set.set(aStr, idx);
    } else {
      this._set[sStr] = idx;
    }
  }
};

/**
 * Is the given string a member of this set?
 *
 * @param String aStr
 */
ArraySet.prototype.has = function ArraySet_has(aStr) {
  if (hasNativeMap) {
    return this._set.has(aStr);
  } else {
    var sStr = util.toSetString(aStr);
    return has.call(this._set, sStr);
  }
};

/**
 * What is the index of the given string in the array?
 *
 * @param String aStr
 */
ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
  if (hasNativeMap) {
    var idx = this._set.get(aStr);
    if (idx >= 0) {
        return idx;
    }
  } else {
    var sStr = util.toSetString(aStr);
    if (has.call(this._set, sStr)) {
      return this._set[sStr];
    }
  }

  throw new Error('"' + aStr + '" is not in the set.');
};

/**
 * What is the element at the given index?
 *
 * @param Number aIdx
 */
ArraySet.prototype.at = function ArraySet_at(aIdx) {
  if (aIdx >= 0 && aIdx < this._array.length) {
    return this._array[aIdx];
  }
  throw new Error('No element indexed by ' + aIdx);
};

/**
 * Returns the array representation of this set (which has the proper indices
 * indicated by indexOf). Note that this is a copy of the internal array used
 * for storing the members so that no one can mess with internal state.
 */
ArraySet.prototype.toArray = function ArraySet_toArray() {
  return this._array.slice();
};

exports.ArraySet = ArraySet;

},{"./util":129}],121:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

var base64 = require('./base64');

// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
//   Continuation
//   |    Sign
//   |    |
//   V    V
//   101011

var VLQ_BASE_SHIFT = 5;

// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;

// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;

/**
 * Converts from a two-complement value to a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
 */
function toVLQSigned(aValue) {
  return aValue < 0
    ? ((-aValue) << 1) + 1
    : (aValue << 1) + 0;
}

/**
 * Converts to a two-complement value from a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
 */
function fromVLQSigned(aValue) {
  var isNegative = (aValue & 1) === 1;
  var shifted = aValue >> 1;
  return isNegative
    ? -shifted
    : shifted;
}

/**
 * Returns the base 64 VLQ encoded value.
 */
exports.encode = function base64VLQ_encode(aValue) {
  var encoded = "";
  var digit;

  var vlq = toVLQSigned(aValue);

  do {
    digit = vlq & VLQ_BASE_MASK;
    vlq >>>= VLQ_BASE_SHIFT;
    if (vlq > 0) {
      // There are still more digits in this value, so we must make sure the
      // continuation bit is marked.
      digit |= VLQ_CONTINUATION_BIT;
    }
    encoded += base64.encode(digit);
  } while (vlq > 0);

  return encoded;
};

/**
 * Decodes the next base 64 VLQ value from the given string and returns the
 * value and the rest of the string via the out parameter.
 */
exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
  var strLen = aStr.length;
  var result = 0;
  var shift = 0;
  var continuation, digit;

  do {
    if (aIndex >= strLen) {
      throw new Error("Expected more digits in base 64 VLQ value.");
    }

    digit = base64.decode(aStr.charCodeAt(aIndex++));
    if (digit === -1) {
      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
    }

    continuation = !!(digit & VLQ_CONTINUATION_BIT);
    digit &= VLQ_BASE_MASK;
    result = result + (digit << shift);
    shift += VLQ_BASE_SHIFT;
  } while (continuation);

  aOutParam.value = fromVLQSigned(result);
  aOutParam.rest = aIndex;
};

},{"./base64":122}],122:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

/**
 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
 */
exports.encode = function (number) {
  if (0 <= number && number < intToCharMap.length) {
    return intToCharMap[number];
  }
  throw new TypeError("Must be between 0 and 63: " + number);
};

/**
 * Decode a single base 64 character code digit to an integer. Returns -1 on
 * failure.
 */
exports.decode = function (charCode) {
  var bigA = 65;     // 'A'
  var bigZ = 90;     // 'Z'

  var littleA = 97;  // 'a'
  var littleZ = 122; // 'z'

  var zero = 48;     // '0'
  var nine = 57;     // '9'

  var plus = 43;     // '+'
  var slash = 47;    // '/'

  var littleOffset = 26;
  var numberOffset = 52;

  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
  if (bigA <= charCode && charCode <= bigZ) {
    return (charCode - bigA);
  }

  // 26 - 51: abcdefghijklmnopqrstuvwxyz
  if (littleA <= charCode && charCode <= littleZ) {
    return (charCode - littleA + littleOffset);
  }

  // 52 - 61: 0123456789
  if (zero <= charCode && charCode <= nine) {
    return (charCode - zero + numberOffset);
  }

  // 62: +
  if (charCode == plus) {
    return 62;
  }

  // 63: /
  if (charCode == slash) {
    return 63;
  }

  // Invalid base64 digit.
  return -1;
};

},{}],123:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;

/**
 * Recursive implementation of binary search.
 *
 * @param aLow Indices here and lower do not contain the needle.
 * @param aHigh Indices here and higher do not contain the needle.
 * @param aNeedle The element being searched for.
 * @param aHaystack The non-empty array being searched.
 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 */
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
  // This function terminates when one of the following is true:
  //
  //   1. We find the exact element we are looking for.
  //
  //   2. We did not find the exact element, but we can return the index of
  //      the next-closest element.
  //
  //   3. We did not find the exact element, and there is no next-closest
  //      element than the one we are searching for, so we return -1.
  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
  var cmp = aCompare(aNeedle, aHaystack[mid], true);
  if (cmp === 0) {
    // Found the element we are looking for.
    return mid;
  }
  else if (cmp > 0) {
    // Our needle is greater than aHaystack[mid].
    if (aHigh - mid > 1) {
      // The element is in the upper half.
      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
    }

    // The exact needle element was not found in this haystack. Determine if
    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return aHigh < aHaystack.length ? aHigh : -1;
    } else {
      return mid;
    }
  }
  else {
    // Our needle is less than aHaystack[mid].
    if (mid - aLow > 1) {
      // The element is in the lower half.
      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
    }

    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return mid;
    } else {
      return aLow < 0 ? -1 : aLow;
    }
  }
}

/**
 * This is an implementation of binary search which will always try and return
 * the index of the closest element if there is no exact hit. This is because
 * mappings between original and generated line/col pairs are single points,
 * and there is an implicit region between each of them, so a miss just means
 * that you aren't on the very start of a region.
 *
 * @param aNeedle The element you are looking for.
 * @param aHaystack The array that is being searched.
 * @param aCompare A function which takes the needle and an element in the
 *     array and returns -1, 0, or 1 depending on whether the needle is less
 *     than, equal to, or greater than the element, respectively.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
 */
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
  if (aHaystack.length === 0) {
    return -1;
  }

  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
  if (index < 0) {
    return -1;
  }

  // We have found either the exact element, or the next-closest element than
  // the one we are searching for. However, there may be more than one such
  // element. Make sure we always return the smallest of these.
  while (index - 1 >= 0) {
    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
      break;
    }
    --index;
  }

  return index;
};

},{}],124:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');

/**
 * Determine whether mappingB is after mappingA with respect to generated
 * position.
 */
function generatedPositionAfter(mappingA, mappingB) {
  // Optimized for most common case
  var lineA = mappingA.generatedLine;
  var lineB = mappingB.generatedLine;
  var columnA = mappingA.generatedColumn;
  var columnB = mappingB.generatedColumn;
  return lineB > lineA || lineB == lineA && columnB >= columnA ||
         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
}

/**
 * A data structure to provide a sorted view of accumulated mappings in a
 * performance conscious manner. It trades a neglibable overhead in general
 * case for a large speedup in case of mappings being added in order.
 */
function MappingList() {
  this._array = [];
  this._sorted = true;
  // Serves as infimum
  this._last = {generatedLine: -1, generatedColumn: 0};
}

/**
 * Iterate through internal items. This method takes the same arguments that
 * `Array.prototype.forEach` takes.
 *
 * NOTE: The order of the mappings is NOT guaranteed.
 */
MappingList.prototype.unsortedForEach =
  function MappingList_forEach(aCallback, aThisArg) {
    this._array.forEach(aCallback, aThisArg);
  };

/**
 * Add the given source mapping.
 *
 * @param Object aMapping
 */
MappingList.prototype.add = function MappingList_add(aMapping) {
  if (generatedPositionAfter(this._last, aMapping)) {
    this._last = aMapping;
    this._array.push(aMapping);
  } else {
    this._sorted = false;
    this._array.push(aMapping);
  }
};

/**
 * Returns the flat, sorted array of mappings. The mappings are sorted by
 * generated position.
 *
 * WARNING: This method returns internal data without copying, for
 * performance. The return value must NOT be mutated, and should be treated as
 * an immutable borrow. If you want to take ownership, you must make your own
 * copy.
 */
MappingList.prototype.toArray = function MappingList_toArray() {
  if (!this._sorted) {
    this._array.sort(util.compareByGeneratedPositionsInflated);
    this._sorted = true;
  }
  return this._array;
};

exports.MappingList = MappingList;

},{"./util":129}],125:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.

/**
 * Swap the elements indexed by `x` and `y` in the array `ary`.
 *
 * @param {Array} ary
 *        The array.
 * @param {Number} x
 *        The index of the first item.
 * @param {Number} y
 *        The index of the second item.
 */
function swap(ary, x, y) {
  var temp = ary[x];
  ary[x] = ary[y];
  ary[y] = temp;
}

/**
 * Returns a random integer within the range `low .. high` inclusive.
 *
 * @param {Number} low
 *        The lower bound on the range.
 * @param {Number} high
 *        The upper bound on the range.
 */
function randomIntInRange(low, high) {
  return Math.round(low + (Math.random() * (high - low)));
}

/**
 * The Quick Sort algorithm.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 * @param {Number} p
 *        Start index of the array
 * @param {Number} r
 *        End index of the array
 */
function doQuickSort(ary, comparator, p, r) {
  // If our lower bound is less than our upper bound, we (1) partition the
  // array into two pieces and (2) recurse on each half. If it is not, this is
  // the empty array and our base case.

  if (p < r) {
    // (1) Partitioning.
    //
    // The partitioning chooses a pivot between `p` and `r` and moves all
    // elements that are less than or equal to the pivot to the before it, and
    // all the elements that are greater than it after it. The effect is that
    // once partition is done, the pivot is in the exact place it will be when
    // the array is put in sorted order, and it will not need to be moved
    // again. This runs in O(n) time.

    // Always choose a random pivot so that an input array which is reverse
    // sorted does not cause O(n^2) running time.
    var pivotIndex = randomIntInRange(p, r);
    var i = p - 1;

    swap(ary, pivotIndex, r);
    var pivot = ary[r];

    // Immediately after `j` is incremented in this loop, the following hold
    // true:
    //
    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
    //
    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
    for (var j = p; j < r; j++) {
      if (comparator(ary[j], pivot) <= 0) {
        i += 1;
        swap(ary, i, j);
      }
    }

    swap(ary, i + 1, j);
    var q = i + 1;

    // (2) Recurse on each half.

    doQuickSort(ary, comparator, p, q - 1);
    doQuickSort(ary, comparator, q + 1, r);
  }
}

/**
 * Sort the given array in-place with the given comparator function.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 */
exports.quickSort = function (ary, comparator) {
  doQuickSort(ary, comparator, 0, ary.length - 1);
};

},{}],126:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');
var binarySearch = require('./binary-search');
var ArraySet = require('./array-set').ArraySet;
var base64VLQ = require('./base64-vlq');
var quickSort = require('./quick-sort').quickSort;

function SourceMapConsumer(aSourceMap) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
  }

  return sourceMap.sections != null
    ? new IndexedSourceMapConsumer(sourceMap)
    : new BasicSourceMapConsumer(sourceMap);
}

SourceMapConsumer.fromSourceMap = function(aSourceMap) {
  return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
}

/**
 * The version of the source mapping spec that we are consuming.
 */
SourceMapConsumer.prototype._version = 3;

// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
//     {
//       generatedLine: The line number in the generated code,
//       generatedColumn: The column number in the generated code,
//       source: The path to the original source file that generated this
//               chunk of code,
//       originalLine: The line number in the original source that
//                     corresponds to this chunk of generated code,
//       originalColumn: The column number in the original source that
//                       corresponds to this chunk of generated code,
//       name: The name of the original symbol which generated this chunk of
//             code.
//     }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.

SourceMapConsumer.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
  get: function () {
    if (!this.__generatedMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__generatedMappings;
  }
});

SourceMapConsumer.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
  get: function () {
    if (!this.__originalMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__originalMappings;
  }
});

SourceMapConsumer.prototype._charIsMappingSeparator =
  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
    var c = aStr.charAt(index);
    return c === ";" || c === ",";
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
SourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    throw new Error("Subclasses must implement _parseMappings");
  };

SourceMapConsumer.GENERATED_ORDER = 1;
SourceMapConsumer.ORIGINAL_ORDER = 2;

SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer.LEAST_UPPER_BOUND = 2;

/**
 * Iterate over each mapping between an original source/line/column and a
 * generated line/column in this source map.
 *
 * @param Function aCallback
 *        The function that is called with each mapping.
 * @param Object aContext
 *        Optional. If specified, this object will be the value of `this` every
 *        time that `aCallback` is called.
 * @param aOrder
 *        Either `SourceMapConsumer.GENERATED_ORDER` or
 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
 *        iterate over the mappings sorted by the generated file's line/column
 *        order or the original's source/line/column order, respectively. Defaults to
 *        `SourceMapConsumer.GENERATED_ORDER`.
 */
SourceMapConsumer.prototype.eachMapping =
  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
    var context = aContext || null;
    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

    var mappings;
    switch (order) {
    case SourceMapConsumer.GENERATED_ORDER:
      mappings = this._generatedMappings;
      break;
    case SourceMapConsumer.ORIGINAL_ORDER:
      mappings = this._originalMappings;
      break;
    default:
      throw new Error("Unknown order of iteration.");
    }

    var sourceRoot = this.sourceRoot;
    mappings.map(function (mapping) {
      var source = mapping.source === null ? null : this._sources.at(mapping.source);
      if (source != null && sourceRoot != null) {
        source = util.join(sourceRoot, source);
      }
      return {
        source: source,
        generatedLine: mapping.generatedLine,
        generatedColumn: mapping.generatedColumn,
        originalLine: mapping.originalLine,
        originalColumn: mapping.originalColumn,
        name: mapping.name === null ? null : this._names.at(mapping.name)
      };
    }, this).forEach(aCallback, context);
  };

/**
 * Returns all generated line and column information for the original source,
 * line, and column provided. If no column is provided, returns all mappings
 * corresponding to a either the line we are searching for or the next
 * closest line that has any mappings. Otherwise, returns all mappings
 * corresponding to the given line and either the column we are searching for
 * or the next closest column that has any offsets.
 *
 * The only argument is an object with the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.
 *   - column: Optional. the column number in the original source.
 *
 * and an array of objects is returned, each with the following properties:
 *
 *   - line: The line number in the generated source, or null.
 *   - column: The column number in the generated source, or null.
 */
SourceMapConsumer.prototype.allGeneratedPositionsFor =
  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
    var line = util.getArg(aArgs, 'line');

    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
    // returns the index of the closest mapping less than the needle. By
    // setting needle.originalColumn to 0, we thus find the last mapping for
    // the given line, provided such a mapping exists.
    var needle = {
      source: util.getArg(aArgs, 'source'),
      originalLine: line,
      originalColumn: util.getArg(aArgs, 'column', 0)
    };

    if (this.sourceRoot != null) {
      needle.source = util.relative(this.sourceRoot, needle.source);
    }
    if (!this._sources.has(needle.source)) {
      return [];
    }
    needle.source = this._sources.indexOf(needle.source);

    var mappings = [];

    var index = this._findMapping(needle,
                                  this._originalMappings,
                                  "originalLine",
                                  "originalColumn",
                                  util.compareByOriginalPositions,
                                  binarySearch.LEAST_UPPER_BOUND);
    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (aArgs.column === undefined) {
        var originalLine = mapping.originalLine;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we found. Since
        // mappings are sorted, this is guaranteed to find all mappings for
        // the line we found.
        while (mapping && mapping.originalLine === originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      } else {
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we were searching for.
        // Since mappings are sorted, this is guaranteed to find all mappings for
        // the line we are searching for.
        while (mapping &&
               mapping.originalLine === line &&
               mapping.originalColumn == originalColumn) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }
    }

    return mappings;
  };

exports.SourceMapConsumer = SourceMapConsumer;

/**
 * A BasicSourceMapConsumer instance represents a parsed source map which we can
 * query for information about the original file positions by giving it a file
 * position in the generated source.
 *
 * The only parameter is the raw source map (either as a JSON string, or
 * already parsed to an object). According to the spec, source maps have the
 * following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - sources: An array of URLs to the original source files.
 *   - names: An array of identifiers which can be referrenced by individual mappings.
 *   - sourceRoot: Optional. The URL root from which all sources are relative.
 *   - sourcesContent: Optional. An array of contents of the original source files.
 *   - mappings: A string of base64 VLQs which contain the actual mappings.
 *   - file: Optional. The generated file this source map is associated with.
 *
 * Here is an example source map, taken from the source map spec[0]:
 *
 *     {
 *       version : 3,
 *       file: "out.js",
 *       sourceRoot : "",
 *       sources: ["foo.js", "bar.js"],
 *       names: ["src", "maps", "are", "fun"],
 *       mappings: "AA,AB;;ABCDE;"
 *     }
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
 */
function BasicSourceMapConsumer(aSourceMap) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
  }

  var version = util.getArg(sourceMap, 'version');
  var sources = util.getArg(sourceMap, 'sources');
  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
  // requires the array) to play nice here.
  var names = util.getArg(sourceMap, 'names', []);
  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
  var mappings = util.getArg(sourceMap, 'mappings');
  var file = util.getArg(sourceMap, 'file', null);

  // Once again, Sass deviates from the spec and supplies the version as a
  // string rather than a number, so we use loose equality checking here.
  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  sources = sources
    .map(String)
    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    .map(util.normalize)
    // Always ensure that absolute sources are internally stored relative to
    // the source root, if the source root is absolute. Not doing this would
    // be particularly problematic when the source root is a prefix of the
    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
    .map(function (source) {
      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
        ? util.relative(sourceRoot, source)
        : source;
    });

  // Pass `true` below to allow duplicate names and sources. While source maps
  // are intended to be compressed and deduplicated, the TypeScript compiler
  // sometimes generates source maps with duplicates in them. See Github issue
  // #72 and bugzil.la/889492.
  this._names = ArraySet.fromArray(names.map(String), true);
  this._sources = ArraySet.fromArray(sources, true);

  this.sourceRoot = sourceRoot;
  this.sourcesContent = sourcesContent;
  this._mappings = mappings;
  this.file = file;
}

BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

/**
 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
 *
 * @param SourceMapGenerator aSourceMap
 *        The source map that will be consumed.
 * @returns BasicSourceMapConsumer
 */
BasicSourceMapConsumer.fromSourceMap =
  function SourceMapConsumer_fromSourceMap(aSourceMap) {
    var smc = Object.create(BasicSourceMapConsumer.prototype);

    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
    smc.sourceRoot = aSourceMap._sourceRoot;
    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                            smc.sourceRoot);
    smc.file = aSourceMap._file;

    // Because we are modifying the entries (by converting string sources and
    // names to indices into the sources and names ArraySets), we have to make
    // a copy of the entry or else bad things happen. Shared mutable state
    // strikes again! See github issue #191.

    var generatedMappings = aSourceMap._mappings.toArray().slice();
    var destGeneratedMappings = smc.__generatedMappings = [];
    var destOriginalMappings = smc.__originalMappings = [];

    for (var i = 0, length = generatedMappings.length; i < length; i++) {
      var srcMapping = generatedMappings[i];
      var destMapping = new Mapping;
      destMapping.generatedLine = srcMapping.generatedLine;
      destMapping.generatedColumn = srcMapping.generatedColumn;

      if (srcMapping.source) {
        destMapping.source = sources.indexOf(srcMapping.source);
        destMapping.originalLine = srcMapping.originalLine;
        destMapping.originalColumn = srcMapping.originalColumn;

        if (srcMapping.name) {
          destMapping.name = names.indexOf(srcMapping.name);
        }

        destOriginalMappings.push(destMapping);
      }

      destGeneratedMappings.push(destMapping);
    }

    quickSort(smc.__originalMappings, util.compareByOriginalPositions);

    return smc;
  };

/**
 * The version of the source mapping spec that we are consuming.
 */
BasicSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
  get: function () {
    return this._sources.toArray().map(function (s) {
      return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
    }, this);
  }
});

/**
 * Provide the JIT with a nice shape / hidden class.
 */
function Mapping() {
  this.generatedLine = 0;
  this.generatedColumn = 0;
  this.source = null;
  this.originalLine = null;
  this.originalColumn = null;
  this.name = null;
}

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
BasicSourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    var generatedLine = 1;
    var previousGeneratedColumn = 0;
    var previousOriginalLine = 0;
    var previousOriginalColumn = 0;
    var previousSource = 0;
    var previousName = 0;
    var length = aStr.length;
    var index = 0;
    var cachedSegments = {};
    var temp = {};
    var originalMappings = [];
    var generatedMappings = [];
    var mapping, str, segment, end, value;

    while (index < length) {
      if (aStr.charAt(index) === ';') {
        generatedLine++;
        index++;
        previousGeneratedColumn = 0;
      }
      else if (aStr.charAt(index) === ',') {
        index++;
      }
      else {
        mapping = new Mapping();
        mapping.generatedLine = generatedLine;

        // Because each offset is encoded relative to the previous one,
        // many segments often have the same encoding. We can exploit this
        // fact by caching the parsed variable length fields of each segment,
        // allowing us to avoid a second parse if we encounter the same
        // segment again.
        for (end = index; end < length; end++) {
          if (this._charIsMappingSeparator(aStr, end)) {
            break;
          }
        }
        str = aStr.slice(index, end);

        segment = cachedSegments[str];
        if (segment) {
          index += str.length;
        } else {
          segment = [];
          while (index < end) {
            base64VLQ.decode(aStr, index, temp);
            value = temp.value;
            index = temp.rest;
            segment.push(value);
          }

          if (segment.length === 2) {
            throw new Error('Found a source, but no line and column');
          }

          if (segment.length === 3) {
            throw new Error('Found a source and line, but no column');
          }

          cachedSegments[str] = segment;
        }

        // Generated column.
        mapping.generatedColumn = previousGeneratedColumn + segment[0];
        previousGeneratedColumn = mapping.generatedColumn;

        if (segment.length > 1) {
          // Original source.
          mapping.source = previousSource + segment[1];
          previousSource += segment[1];

          // Original line.
          mapping.originalLine = previousOriginalLine + segment[2];
          previousOriginalLine = mapping.originalLine;
          // Lines are stored 0-based
          mapping.originalLine += 1;

          // Original column.
          mapping.originalColumn = previousOriginalColumn + segment[3];
          previousOriginalColumn = mapping.originalColumn;

          if (segment.length > 4) {
            // Original name.
            mapping.name = previousName + segment[4];
            previousName += segment[4];
          }
        }

        generatedMappings.push(mapping);
        if (typeof mapping.originalLine === 'number') {
          originalMappings.push(mapping);
        }
      }
    }

    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
    this.__generatedMappings = generatedMappings;

    quickSort(originalMappings, util.compareByOriginalPositions);
    this.__originalMappings = originalMappings;
  };

/**
 * Find the mapping that best matches the hypothetical "needle" mapping that
 * we are searching for in the given "haystack" of mappings.
 */
BasicSourceMapConsumer.prototype._findMapping =
  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                         aColumnName, aComparator, aBias) {
    // To return the position we are searching for, we must first find the
    // mapping for the given position and then return the opposite position it
    // points to. Because the mappings are sorted, we can use binary search to
    // find the best mapping.

    if (aNeedle[aLineName] <= 0) {
      throw new TypeError('Line must be greater than or equal to 1, got '
                          + aNeedle[aLineName]);
    }
    if (aNeedle[aColumnName] < 0) {
      throw new TypeError('Column must be greater than or equal to 0, got '
                          + aNeedle[aColumnName]);
    }

    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
  };

/**
 * Compute the last column for each generated mapping. The last column is
 * inclusive.
 */
BasicSourceMapConsumer.prototype.computeColumnSpans =
  function SourceMapConsumer_computeColumnSpans() {
    for (var index = 0; index < this._generatedMappings.length; ++index) {
      var mapping = this._generatedMappings[index];

      // Mappings do not contain a field for the last generated columnt. We
      // can come up with an optimistic estimate, however, by assuming that
      // mappings are contiguous (i.e. given two consecutive mappings, the
      // first mapping ends where the second one starts).
      if (index + 1 < this._generatedMappings.length) {
        var nextMapping = this._generatedMappings[index + 1];

        if (mapping.generatedLine === nextMapping.generatedLine) {
          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
          continue;
        }
      }

      // The last mapping for each line spans the entire line.
      mapping.lastGeneratedColumn = Infinity;
    }
  };

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.
 *   - column: The column number in the generated source.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.
 *   - column: The column number in the original source, or null.
 *   - name: The original identifier, or null.
 */
BasicSourceMapConsumer.prototype.originalPositionFor =
  function SourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._generatedMappings,
      "generatedLine",
      "generatedColumn",
      util.compareByGeneratedPositionsDeflated,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._generatedMappings[index];

      if (mapping.generatedLine === needle.generatedLine) {
        var source = util.getArg(mapping, 'source', null);
        if (source !== null) {
          source = this._sources.at(source);
          if (this.sourceRoot != null) {
            source = util.join(this.sourceRoot, source);
          }
        }
        var name = util.getArg(mapping, 'name', null);
        if (name !== null) {
          name = this._names.at(name);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: name
        };
      }
    }

    return {
      source: null,
      line: null,
      column: null,
      name: null
    };
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
  function BasicSourceMapConsumer_hasContentsOfAllSources() {
    if (!this.sourcesContent) {
      return false;
    }
    return this.sourcesContent.length >= this._sources.size() &&
      !this.sourcesContent.some(function (sc) { return sc == null; });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
BasicSourceMapConsumer.prototype.sourceContentFor =
  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    if (!this.sourcesContent) {
      return null;
    }

    if (this.sourceRoot != null) {
      aSource = util.relative(this.sourceRoot, aSource);
    }

    if (this._sources.has(aSource)) {
      return this.sourcesContent[this._sources.indexOf(aSource)];
    }

    var url;
    if (this.sourceRoot != null
        && (url = util.urlParse(this.sourceRoot))) {
      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
      // many users. We can help them out when they expect file:// URIs to
      // behave like it would if they were running a local HTTP server. See
      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
      var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
      if (url.scheme == "file"
          && this._sources.has(fileUriAbsPath)) {
        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
      }

      if ((!url.path || url.path == "/")
          && this._sources.has("/" + aSource)) {
        return this.sourcesContent[this._sources.indexOf("/" + aSource)];
      }
    }

    // This function is used recursively from
    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
    // don't want to throw if we can't find the source - we just want to
    // return null, so we provide a flag to exit gracefully.
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.
 *   - column: The column number in the original source.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.
 *   - column: The column number in the generated source, or null.
 */
BasicSourceMapConsumer.prototype.generatedPositionFor =
  function SourceMapConsumer_generatedPositionFor(aArgs) {
    var source = util.getArg(aArgs, 'source');
    if (this.sourceRoot != null) {
      source = util.relative(this.sourceRoot, source);
    }
    if (!this._sources.has(source)) {
      return {
        line: null,
        column: null,
        lastColumn: null
      };
    }
    source = this._sources.indexOf(source);

    var needle = {
      source: source,
      originalLine: util.getArg(aArgs, 'line'),
      originalColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._originalMappings,
      "originalLine",
      "originalColumn",
      util.compareByOriginalPositions,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (mapping.source === needle.source) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }
    }

    return {
      line: null,
      column: null,
      lastColumn: null
    };
  };

exports.BasicSourceMapConsumer = BasicSourceMapConsumer;

/**
 * An IndexedSourceMapConsumer instance represents a parsed source map which
 * we can query for information. It differs from BasicSourceMapConsumer in
 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
 * input.
 *
 * The only parameter is a raw source map (either as a JSON string, or already
 * parsed to an object). According to the spec for indexed source maps, they
 * have the following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - file: Optional. The generated file this source map is associated with.
 *   - sections: A list of section definitions.
 *
 * Each value under the "sections" field has two fields:
 *   - offset: The offset into the original specified at which this section
 *       begins to apply, defined as an object with a "line" and "column"
 *       field.
 *   - map: A source map definition. This source map could also be indexed,
 *       but doesn't have to be.
 *
 * Instead of the "map" field, it's also possible to have a "url" field
 * specifying a URL to retrieve a source map from, but that's currently
 * unsupported.
 *
 * Here's an example source map, taken from the source map spec[0], but
 * modified to omit a section which uses the "url" field.
 *
 *  {
 *    version : 3,
 *    file: "app.js",
 *    sections: [{
 *      offset: {line:100, column:10},
 *      map: {
 *        version : 3,
 *        file: "section.js",
 *        sources: ["foo.js", "bar.js"],
 *        names: ["src", "maps", "are", "fun"],
 *        mappings: "AAAA,E;;ABCDE;"
 *      }
 *    }],
 *  }
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
 */
function IndexedSourceMapConsumer(aSourceMap) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
  }

  var version = util.getArg(sourceMap, 'version');
  var sections = util.getArg(sourceMap, 'sections');

  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  this._sources = new ArraySet();
  this._names = new ArraySet();

  var lastOffset = {
    line: -1,
    column: 0
  };
  this._sections = sections.map(function (s) {
    if (s.url) {
      // The url field will require support for asynchronicity.
      // See https://github.com/mozilla/source-map/issues/16
      throw new Error('Support for url field in sections not implemented.');
    }
    var offset = util.getArg(s, 'offset');
    var offsetLine = util.getArg(offset, 'line');
    var offsetColumn = util.getArg(offset, 'column');

    if (offsetLine < lastOffset.line ||
        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
      throw new Error('Section offsets must be ordered and non-overlapping.');
    }
    lastOffset = offset;

    return {
      generatedOffset: {
        // The offset fields are 0-based, but we use 1-based indices when
        // encoding/decoding from VLQ.
        generatedLine: offsetLine + 1,
        generatedColumn: offsetColumn + 1
      },
      consumer: new SourceMapConsumer(util.getArg(s, 'map'))
    }
  });
}

IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

/**
 * The version of the source mapping spec that we are consuming.
 */
IndexedSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
  get: function () {
    var sources = [];
    for (var i = 0; i < this._sections.length; i++) {
      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
        sources.push(this._sections[i].consumer.sources[j]);
      }
    }
    return sources;
  }
});

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.
 *   - column: The column number in the generated source.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.
 *   - column: The column number in the original source, or null.
 *   - name: The original identifier, or null.
 */
IndexedSourceMapConsumer.prototype.originalPositionFor =
  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    // Find the section containing the generated position we're trying to map
    // to an original position.
    var sectionIndex = binarySearch.search(needle, this._sections,
      function(needle, section) {
        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
        if (cmp) {
          return cmp;
        }

        return (needle.generatedColumn -
                section.generatedOffset.generatedColumn);
      });
    var section = this._sections[sectionIndex];

    if (!section) {
      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    }

    return section.consumer.originalPositionFor({
      line: needle.generatedLine -
        (section.generatedOffset.generatedLine - 1),
      column: needle.generatedColumn -
        (section.generatedOffset.generatedLine === needle.generatedLine
         ? section.generatedOffset.generatedColumn - 1
         : 0),
      bias: aArgs.bias
    });
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
    return this._sections.every(function (s) {
      return s.consumer.hasContentsOfAllSources();
    });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
IndexedSourceMapConsumer.prototype.sourceContentFor =
  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      var content = section.consumer.sourceContentFor(aSource, true);
      if (content) {
        return content;
      }
    }
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.
 *   - column: The column number in the original source.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.
 *   - column: The column number in the generated source, or null.
 */
IndexedSourceMapConsumer.prototype.generatedPositionFor =
  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      // Only consider this section if the requested source is in the list of
      // sources of the consumer.
      if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
        continue;
      }
      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
      if (generatedPosition) {
        var ret = {
          line: generatedPosition.line +
            (section.generatedOffset.generatedLine - 1),
          column: generatedPosition.column +
            (section.generatedOffset.generatedLine === generatedPosition.line
             ? section.generatedOffset.generatedColumn - 1
             : 0)
        };
        return ret;
      }
    }

    return {
      line: null,
      column: null
    };
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
IndexedSourceMapConsumer.prototype._parseMappings =
  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    this.__generatedMappings = [];
    this.__originalMappings = [];
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];
      var sectionMappings = section.consumer._generatedMappings;
      for (var j = 0; j < sectionMappings.length; j++) {
        var mapping = sectionMappings[j];

        var source = section.consumer._sources.at(mapping.source);
        if (section.consumer.sourceRoot !== null) {
          source = util.join(section.consumer.sourceRoot, source);
        }
        this._sources.add(source);
        source = this._sources.indexOf(source);

        var name = section.consumer._names.at(mapping.name);
        this._names.add(name);
        name = this._names.indexOf(name);

        // The mappings coming from the consumer for the section have
        // generated positions relative to the start of the section, so we
        // need to offset them to be relative to the start of the concatenated
        // generated file.
        var adjustedMapping = {
          source: source,
          generatedLine: mapping.generatedLine +
            (section.generatedOffset.generatedLine - 1),
          generatedColumn: mapping.generatedColumn +
            (section.generatedOffset.generatedLine === mapping.generatedLine
            ? section.generatedOffset.generatedColumn - 1
            : 0),
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: name
        };

        this.__generatedMappings.push(adjustedMapping);
        if (typeof adjustedMapping.originalLine === 'number') {
          this.__originalMappings.push(adjustedMapping);
        }
      }
    }

    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
    quickSort(this.__originalMappings, util.compareByOriginalPositions);
  };

exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;

},{"./array-set":120,"./base64-vlq":121,"./binary-search":123,"./quick-sort":125,"./util":129}],127:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var base64VLQ = require('./base64-vlq');
var util = require('./util');
var ArraySet = require('./array-set').ArraySet;
var MappingList = require('./mapping-list').MappingList;

/**
 * An instance of the SourceMapGenerator represents a source map which is
 * being built incrementally. You may pass an object with the following
 * properties:
 *
 *   - file: The filename of the generated source.
 *   - sourceRoot: A root for all relative URLs in this source map.
 */
function SourceMapGenerator(aArgs) {
  if (!aArgs) {
    aArgs = {};
  }
  this._file = util.getArg(aArgs, 'file', null);
  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
  this._sources = new ArraySet();
  this._names = new ArraySet();
  this._mappings = new MappingList();
  this._sourcesContents = null;
}

SourceMapGenerator.prototype._version = 3;

/**
 * Creates a new SourceMapGenerator based on a SourceMapConsumer
 *
 * @param aSourceMapConsumer The SourceMap.
 */
SourceMapGenerator.fromSourceMap =
  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
    var sourceRoot = aSourceMapConsumer.sourceRoot;
    var generator = new SourceMapGenerator({
      file: aSourceMapConsumer.file,
      sourceRoot: sourceRoot
    });
    aSourceMapConsumer.eachMapping(function (mapping) {
      var newMapping = {
        generated: {
          line: mapping.generatedLine,
          column: mapping.generatedColumn
        }
      };

      if (mapping.source != null) {
        newMapping.source = mapping.source;
        if (sourceRoot != null) {
          newMapping.source = util.relative(sourceRoot, newMapping.source);
        }

        newMapping.original = {
          line: mapping.originalLine,
          column: mapping.originalColumn
        };

        if (mapping.name != null) {
          newMapping.name = mapping.name;
        }
      }

      generator.addMapping(newMapping);
    });
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        generator.setSourceContent(sourceFile, content);
      }
    });
    return generator;
  };

/**
 * Add a single mapping from original source line and column to the generated
 * source's line and column for this source map being created. The mapping
 * object should have the following properties:
 *
 *   - generated: An object with the generated line and column positions.
 *   - original: An object with the original line and column positions.
 *   - source: The original source file (relative to the sourceRoot).
 *   - name: An optional original token name for this mapping.
 */
SourceMapGenerator.prototype.addMapping =
  function SourceMapGenerator_addMapping(aArgs) {
    var generated = util.getArg(aArgs, 'generated');
    var original = util.getArg(aArgs, 'original', null);
    var source = util.getArg(aArgs, 'source', null);
    var name = util.getArg(aArgs, 'name', null);

    if (!this._skipValidation) {
      this._validateMapping(generated, original, source, name);
    }

    if (source != null) {
      source = String(source);
      if (!this._sources.has(source)) {
        this._sources.add(source);
      }
    }

    if (name != null) {
      name = String(name);
      if (!this._names.has(name)) {
        this._names.add(name);
      }
    }

    this._mappings.add({
      generatedLine: generated.line,
      generatedColumn: generated.column,
      originalLine: original != null && original.line,
      originalColumn: original != null && original.column,
      source: source,
      name: name
    });
  };

/**
 * Set the source content for a source file.
 */
SourceMapGenerator.prototype.setSourceContent =
  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
    var source = aSourceFile;
    if (this._sourceRoot != null) {
      source = util.relative(this._sourceRoot, source);
    }

    if (aSourceContent != null) {
      // Add the source content to the _sourcesContents map.
      // Create a new _sourcesContents map if the property is null.
      if (!this._sourcesContents) {
        this._sourcesContents = Object.create(null);
      }
      this._sourcesContents[util.toSetString(source)] = aSourceContent;
    } else if (this._sourcesContents) {
      // Remove the source file from the _sourcesContents map.
      // If the _sourcesContents map is empty, set the property to null.
      delete this._sourcesContents[util.toSetString(source)];
      if (Object.keys(this._sourcesContents).length === 0) {
        this._sourcesContents = null;
      }
    }
  };

/**
 * Applies the mappings of a sub-source-map for a specific source file to the
 * source map being generated. Each mapping to the supplied source file is
 * rewritten using the supplied source map. Note: The resolution for the
 * resulting mappings is the minimium of this map and the supplied map.
 *
 * @param aSourceMapConsumer The source map to be applied.
 * @param aSourceFile Optional. The filename of the source file.
 *        If omitted, SourceMapConsumer's file property will be used.
 * @param aSourceMapPath Optional. The dirname of the path to the source map
 *        to be applied. If relative, it is relative to the SourceMapConsumer.
 *        This parameter is needed when the two source maps aren't in the same
 *        directory, and the source map to be applied contains relative source
 *        paths. If so, those relative source paths need to be rewritten
 *        relative to the SourceMapGenerator.
 */
SourceMapGenerator.prototype.applySourceMap =
  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
    var sourceFile = aSourceFile;
    // If aSourceFile is omitted, we will use the file property of the SourceMap
    if (aSourceFile == null) {
      if (aSourceMapConsumer.file == null) {
        throw new Error(
          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
          'or the source map\'s "file" property. Both were omitted.'
        );
      }
      sourceFile = aSourceMapConsumer.file;
    }
    var sourceRoot = this._sourceRoot;
    // Make "sourceFile" relative if an absolute Url is passed.
    if (sourceRoot != null) {
      sourceFile = util.relative(sourceRoot, sourceFile);
    }
    // Applying the SourceMap can add and remove items from the sources and
    // the names array.
    var newSources = new ArraySet();
    var newNames = new ArraySet();

    // Find mappings for the "sourceFile"
    this._mappings.unsortedForEach(function (mapping) {
      if (mapping.source === sourceFile && mapping.originalLine != null) {
        // Check if it can be mapped by the source map, then update the mapping.
        var original = aSourceMapConsumer.originalPositionFor({
          line: mapping.originalLine,
          column: mapping.originalColumn
        });
        if (original.source != null) {
          // Copy mapping
          mapping.source = original.source;
          if (aSourceMapPath != null) {
            mapping.source = util.join(aSourceMapPath, mapping.source)
          }
          if (sourceRoot != null) {
            mapping.source = util.relative(sourceRoot, mapping.source);
          }
          mapping.originalLine = original.line;
          mapping.originalColumn = original.column;
          if (original.name != null) {
            mapping.name = original.name;
          }
        }
      }

      var source = mapping.source;
      if (source != null && !newSources.has(source)) {
        newSources.add(source);
      }

      var name = mapping.name;
      if (name != null && !newNames.has(name)) {
        newNames.add(name);
      }

    }, this);
    this._sources = newSources;
    this._names = newNames;

    // Copy sourcesContents of applied map.
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aSourceMapPath != null) {
          sourceFile = util.join(aSourceMapPath, sourceFile);
        }
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        this.setSourceContent(sourceFile, content);
      }
    }, this);
  };

/**
 * A mapping can have one of the three levels of data:
 *
 *   1. Just the generated position.
 *   2. The Generated position, original position, and original source.
 *   3. Generated and original position, original source, as well as a name
 *      token.
 *
 * To maintain consistency, we validate that any new mapping being added falls
 * in to one of these categories.
 */
SourceMapGenerator.prototype._validateMapping =
  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                              aName) {
    // When aOriginal is truthy but has empty values for .line and .column,
    // it is most likely a programmer error. In this case we throw a very
    // specific error message to try to guide them the right way.
    // For example: https://github.com/Polymer/polymer-bundler/pull/519
    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
        throw new Error(
            'original.line and original.column are not numbers -- you probably meant to omit ' +
            'the original mapping entirely and only map the generated position. If so, pass ' +
            'null for the original mapping instead of an object with empty or null values.'
        );
    }

    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
        && aGenerated.line > 0 && aGenerated.column >= 0
        && !aOriginal && !aSource && !aName) {
      // Case 1.
      return;
    }
    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
             && aGenerated.line > 0 && aGenerated.column >= 0
             && aOriginal.line > 0 && aOriginal.column >= 0
             && aSource) {
      // Cases 2 and 3.
      return;
    }
    else {
      throw new Error('Invalid mapping: ' + JSON.stringify({
        generated: aGenerated,
        source: aSource,
        original: aOriginal,
        name: aName
      }));
    }
  };

/**
 * Serialize the accumulated mappings in to the stream of base 64 VLQs
 * specified by the source map format.
 */
SourceMapGenerator.prototype._serializeMappings =
  function SourceMapGenerator_serializeMappings() {
    var previousGeneratedColumn = 0;
    var previousGeneratedLine = 1;
    var previousOriginalColumn = 0;
    var previousOriginalLine = 0;
    var previousName = 0;
    var previousSource = 0;
    var result = '';
    var next;
    var mapping;
    var nameIdx;
    var sourceIdx;

    var mappings = this._mappings.toArray();
    for (var i = 0, len = mappings.length; i < len; i++) {
      mapping = mappings[i];
      next = ''

      if (mapping.generatedLine !== previousGeneratedLine) {
        previousGeneratedColumn = 0;
        while (mapping.generatedLine !== previousGeneratedLine) {
          next += ';';
          previousGeneratedLine++;
        }
      }
      else {
        if (i > 0) {
          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
            continue;
          }
          next += ',';
        }
      }

      next += base64VLQ.encode(mapping.generatedColumn
                                 - previousGeneratedColumn);
      previousGeneratedColumn = mapping.generatedColumn;

      if (mapping.source != null) {
        sourceIdx = this._sources.indexOf(mapping.source);
        next += base64VLQ.encode(sourceIdx - previousSource);
        previousSource = sourceIdx;

        // lines are stored 0-based in SourceMap spec version 3
        next += base64VLQ.encode(mapping.originalLine - 1
                                   - previousOriginalLine);
        previousOriginalLine = mapping.originalLine - 1;

        next += base64VLQ.encode(mapping.originalColumn
                                   - previousOriginalColumn);
        previousOriginalColumn = mapping.originalColumn;

        if (mapping.name != null) {
          nameIdx = this._names.indexOf(mapping.name);
          next += base64VLQ.encode(nameIdx - previousName);
          previousName = nameIdx;
        }
      }

      result += next;
    }

    return result;
  };

SourceMapGenerator.prototype._generateSourcesContent =
  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
    return aSources.map(function (source) {
      if (!this._sourcesContents) {
        return null;
      }
      if (aSourceRoot != null) {
        source = util.relative(aSourceRoot, source);
      }
      var key = util.toSetString(source);
      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
        ? this._sourcesContents[key]
        : null;
    }, this);
  };

/**
 * Externalize the source map.
 */
SourceMapGenerator.prototype.toJSON =
  function SourceMapGenerator_toJSON() {
    var map = {
      version: this._version,
      sources: this._sources.toArray(),
      names: this._names.toArray(),
      mappings: this._serializeMappings()
    };
    if (this._file != null) {
      map.file = this._file;
    }
    if (this._sourceRoot != null) {
      map.sourceRoot = this._sourceRoot;
    }
    if (this._sourcesContents) {
      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
    }

    return map;
  };

/**
 * Render the source map being generated to a string.
 */
SourceMapGenerator.prototype.toString =
  function SourceMapGenerator_toString() {
    return JSON.stringify(this.toJSON());
  };

exports.SourceMapGenerator = SourceMapGenerator;

},{"./array-set":120,"./base64-vlq":121,"./mapping-list":124,"./util":129}],128:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
var util = require('./util');

// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
// operating systems these days (capturing the result).
var REGEX_NEWLINE = /(\r?\n)/;

// Newline character code for charCodeAt() comparisons
var NEWLINE_CODE = 10;

// Private symbol for identifying `SourceNode`s when multiple versions of
// the source-map library are loaded. This MUST NOT CHANGE across
// versions!
var isSourceNode = "$$$isSourceNode$$$";

/**
 * SourceNodes provide a way to abstract over interpolating/concatenating
 * snippets of generated JavaScript source code while maintaining the line and
 * column information associated with the original source code.
 *
 * @param aLine The original line number.
 * @param aColumn The original column number.
 * @param aSource The original source's filename.
 * @param aChunks Optional. An array of strings which are snippets of
 *        generated JS, or other SourceNodes.
 * @param aName The original identifier.
 */
function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
  this.children = [];
  this.sourceContents = {};
  this.line = aLine == null ? null : aLine;
  this.column = aColumn == null ? null : aColumn;
  this.source = aSource == null ? null : aSource;
  this.name = aName == null ? null : aName;
  this[isSourceNode] = true;
  if (aChunks != null) this.add(aChunks);
}

/**
 * Creates a SourceNode from generated code and a SourceMapConsumer.
 *
 * @param aGeneratedCode The generated code
 * @param aSourceMapConsumer The SourceMap for the generated code
 * @param aRelativePath Optional. The path that relative sources in the
 *        SourceMapConsumer should be relative to.
 */
SourceNode.fromStringWithSourceMap =
  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
    // The SourceNode we want to fill with the generated code
    // and the SourceMap
    var node = new SourceNode();

    // All even indices of this array are one line of the generated code,
    // while all odd indices are the newlines between two adjacent lines
    // (since `REGEX_NEWLINE` captures its match).
    // Processed fragments are accessed by calling `shiftNextLine`.
    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
    var remainingLinesIndex = 0;
    var shiftNextLine = function() {
      var lineContents = getNextLine();
      // The last line of a file might not have a newline.
      var newLine = getNextLine() || "";
      return lineContents + newLine;

      function getNextLine() {
        return remainingLinesIndex < remainingLines.length ?
            remainingLines[remainingLinesIndex++] : undefined;
      }
    };

    // We need to remember the position of "remainingLines"
    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

    // The generate SourceNodes we need a code range.
    // To extract it current and last mapping is used.
    // Here we store the last mapping.
    var lastMapping = null;

    aSourceMapConsumer.eachMapping(function (mapping) {
      if (lastMapping !== null) {
        // We add the code from "lastMapping" to "mapping":
        // First check if there is a new line in between.
        if (lastGeneratedLine < mapping.generatedLine) {
          // Associate first line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
          lastGeneratedLine++;
          lastGeneratedColumn = 0;
          // The remaining code is added without mapping
        } else {
          // There is no new line in between.
          // Associate the code between "lastGeneratedColumn" and
          // "mapping.generatedColumn" with "lastMapping"
          var nextLine = remainingLines[remainingLinesIndex];
          var code = nextLine.substr(0, mapping.generatedColumn -
                                        lastGeneratedColumn);
          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                              lastGeneratedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
          addMappingWithCode(lastMapping, code);
          // No more remaining code, continue
          lastMapping = mapping;
          return;
        }
      }
      // We add the generated code until the first mapping
      // to the SourceNode without any mapping.
      // Each line is added as separate string.
      while (lastGeneratedLine < mapping.generatedLine) {
        node.add(shiftNextLine());
        lastGeneratedLine++;
      }
      if (lastGeneratedColumn < mapping.generatedColumn) {
        var nextLine = remainingLines[remainingLinesIndex];
        node.add(nextLine.substr(0, mapping.generatedColumn));
        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
        lastGeneratedColumn = mapping.generatedColumn;
      }
      lastMapping = mapping;
    }, this);
    // We have processed all mappings.
    if (remainingLinesIndex < remainingLines.length) {
      if (lastMapping) {
        // Associate the remaining code in the current line with "lastMapping"
        addMappingWithCode(lastMapping, shiftNextLine());
      }
      // and add the remaining lines without any mapping
      node.add(remainingLines.splice(remainingLinesIndex).join(""));
    }

    // Copy sourcesContent into SourceNode
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aRelativePath != null) {
          sourceFile = util.join(aRelativePath, sourceFile);
        }
        node.setSourceContent(sourceFile, content);
      }
    });

    return node;

    function addMappingWithCode(mapping, code) {
      if (mapping === null || mapping.source === undefined) {
        node.add(code);
      } else {
        var source = aRelativePath
          ? util.join(aRelativePath, mapping.source)
          : mapping.source;
        node.add(new SourceNode(mapping.originalLine,
                                mapping.originalColumn,
                                source,
                                code,
                                mapping.name));
      }
    }
  };

/**
 * Add a chunk of generated JS to this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.add = function SourceNode_add(aChunk) {
  if (Array.isArray(aChunk)) {
    aChunk.forEach(function (chunk) {
      this.add(chunk);
    }, this);
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    if (aChunk) {
      this.children.push(aChunk);
    }
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Add a chunk of generated JS to the beginning of this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
  if (Array.isArray(aChunk)) {
    for (var i = aChunk.length-1; i >= 0; i--) {
      this.prepend(aChunk[i]);
    }
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    this.children.unshift(aChunk);
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Walk over the tree of JS snippets in this node and its children. The
 * walking function is called once for each snippet of JS and is passed that
 * snippet and the its original associated source's line/column location.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walk = function SourceNode_walk(aFn) {
  var chunk;
  for (var i = 0, len = this.children.length; i < len; i++) {
    chunk = this.children[i];
    if (chunk[isSourceNode]) {
      chunk.walk(aFn);
    }
    else {
      if (chunk !== '') {
        aFn(chunk, { source: this.source,
                     line: this.line,
                     column: this.column,
                     name: this.name });
      }
    }
  }
};

/**
 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
 * each of `this.children`.
 *
 * @param aSep The separator.
 */
SourceNode.prototype.join = function SourceNode_join(aSep) {
  var newChildren;
  var i;
  var len = this.children.length;
  if (len > 0) {
    newChildren = [];
    for (i = 0; i < len-1; i++) {
      newChildren.push(this.children[i]);
      newChildren.push(aSep);
    }
    newChildren.push(this.children[i]);
    this.children = newChildren;
  }
  return this;
};

/**
 * Call String.prototype.replace on the very right-most source snippet. Useful
 * for trimming whitespace from the end of a source node, etc.
 *
 * @param aPattern The pattern to replace.
 * @param aReplacement The thing to replace the pattern with.
 */
SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
  var lastChild = this.children[this.children.length - 1];
  if (lastChild[isSourceNode]) {
    lastChild.replaceRight(aPattern, aReplacement);
  }
  else if (typeof lastChild === 'string') {
    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
  }
  else {
    this.children.push(''.replace(aPattern, aReplacement));
  }
  return this;
};

/**
 * Set the source content for a source file. This will be added to the SourceMapGenerator
 * in the sourcesContent field.
 *
 * @param aSourceFile The filename of the source file
 * @param aSourceContent The content of the source file
 */
SourceNode.prototype.setSourceContent =
  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
  };

/**
 * Walk over the tree of SourceNodes. The walking function is called for each
 * source file content and is passed the filename and source content.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walkSourceContents =
  function SourceNode_walkSourceContents(aFn) {
    for (var i = 0, len = this.children.length; i < len; i++) {
      if (this.children[i][isSourceNode]) {
        this.children[i].walkSourceContents(aFn);
      }
    }

    var sources = Object.keys(this.sourceContents);
    for (var i = 0, len = sources.length; i < len; i++) {
      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
    }
  };

/**
 * Return the string representation of this source node. Walks over the tree
 * and concatenates all the various snippets together to one string.
 */
SourceNode.prototype.toString = function SourceNode_toString() {
  var str = "";
  this.walk(function (chunk) {
    str += chunk;
  });
  return str;
};

/**
 * Returns the string representation of this source node along with a source
 * map.
 */
SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
  var generated = {
    code: "",
    line: 1,
    column: 0
  };
  var map = new SourceMapGenerator(aArgs);
  var sourceMappingActive = false;
  var lastOriginalSource = null;
  var lastOriginalLine = null;
  var lastOriginalColumn = null;
  var lastOriginalName = null;
  this.walk(function (chunk, original) {
    generated.code += chunk;
    if (original.source !== null
        && original.line !== null
        && original.column !== null) {
      if(lastOriginalSource !== original.source
         || lastOriginalLine !== original.line
         || lastOriginalColumn !== original.column
         || lastOriginalName !== original.name) {
        map.addMapping({
          source: original.source,
          original: {
            line: original.line,
            column: original.column
          },
          generated: {
            line: generated.line,
            column: generated.column
          },
          name: original.name
        });
      }
      lastOriginalSource = original.source;
      lastOriginalLine = original.line;
      lastOriginalColumn = original.column;
      lastOriginalName = original.name;
      sourceMappingActive = true;
    } else if (sourceMappingActive) {
      map.addMapping({
        generated: {
          line: generated.line,
          column: generated.column
        }
      });
      lastOriginalSource = null;
      sourceMappingActive = false;
    }
    for (var idx = 0, length = chunk.length; idx < length; idx++) {
      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
        generated.line++;
        generated.column = 0;
        // Mappings end at eol
        if (idx + 1 === length) {
          lastOriginalSource = null;
          sourceMappingActive = false;
        } else if (sourceMappingActive) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
      } else {
        generated.column++;
      }
    }
  });
  this.walkSourceContents(function (sourceFile, sourceContent) {
    map.setSourceContent(sourceFile, sourceContent);
  });

  return { code: generated.code, map: map };
};

exports.SourceNode = SourceNode;

},{"./source-map-generator":127,"./util":129}],129:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

/**
 * This is a helper function for getting values from parameter/options
 * objects.
 *
 * @param args The object we are extracting values from
 * @param name The name of the property we are getting.
 * @param defaultValue An optional value to return if the property is missing
 * from the object. If this is not specified and the property is missing, an
 * error will be thrown.
 */
function getArg(aArgs, aName, aDefaultValue) {
  if (aName in aArgs) {
    return aArgs[aName];
  } else if (arguments.length === 3) {
    return aDefaultValue;
  } else {
    throw new Error('"' + aName + '" is a required argument.');
  }
}
exports.getArg = getArg;

var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
var dataUrlRegexp = /^data:.+\,.+$/;

function urlParse(aUrl) {
  var match = aUrl.match(urlRegexp);
  if (!match) {
    return null;
  }
  return {
    scheme: match[1],
    auth: match[2],
    host: match[3],
    port: match[4],
    path: match[5]
  };
}
exports.urlParse = urlParse;

function urlGenerate(aParsedUrl) {
  var url = '';
  if (aParsedUrl.scheme) {
    url += aParsedUrl.scheme + ':';
  }
  url += '//';
  if (aParsedUrl.auth) {
    url += aParsedUrl.auth + '@';
  }
  if (aParsedUrl.host) {
    url += aParsedUrl.host;
  }
  if (aParsedUrl.port) {
    url += ":" + aParsedUrl.port
  }
  if (aParsedUrl.path) {
    url += aParsedUrl.path;
  }
  return url;
}
exports.urlGenerate = urlGenerate;

/**
 * Normalizes a path, or the path portion of a URL:
 *
 * - Replaces consecutive slashes with one slash.
 * - Removes unnecessary '.' parts.
 * - Removes unnecessary '<dir>/..' parts.
 *
 * Based on code in the Node.js 'path' core module.
 *
 * @param aPath The path or url to normalize.
 */
function normalize(aPath) {
  var path = aPath;
  var url = urlParse(aPath);
  if (url) {
    if (!url.path) {
      return aPath;
    }
    path = url.path;
  }
  var isAbsolute = exports.isAbsolute(path);

  var parts = path.split(/\/+/);
  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
    part = parts[i];
    if (part === '.') {
      parts.splice(i, 1);
    } else if (part === '..') {
      up++;
    } else if (up > 0) {
      if (part === '') {
        // The first part is blank if the path is absolute. Trying to go
        // above the root is a no-op. Therefore we can remove all '..' parts
        // directly after the root.
        parts.splice(i + 1, up);
        up = 0;
      } else {
        parts.splice(i, 2);
        up--;
      }
    }
  }
  path = parts.join('/');

  if (path === '') {
    path = isAbsolute ? '/' : '.';
  }

  if (url) {
    url.path = path;
    return urlGenerate(url);
  }
  return path;
}
exports.normalize = normalize;

/**
 * Joins two paths/URLs.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be joined with the root.
 *
 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
 *   first.
 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
 *   is updated with the result and aRoot is returned. Otherwise the result
 *   is returned.
 *   - If aPath is absolute, the result is aPath.
 *   - Otherwise the two paths are joined with a slash.
 * - Joining for example 'http://' and 'www.example.com' is also supported.
 */
function join(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }
  if (aPath === "") {
    aPath = ".";
  }
  var aPathUrl = urlParse(aPath);
  var aRootUrl = urlParse(aRoot);
  if (aRootUrl) {
    aRoot = aRootUrl.path || '/';
  }

  // `join(foo, '//www.example.org')`
  if (aPathUrl && !aPathUrl.scheme) {
    if (aRootUrl) {
      aPathUrl.scheme = aRootUrl.scheme;
    }
    return urlGenerate(aPathUrl);
  }

  if (aPathUrl || aPath.match(dataUrlRegexp)) {
    return aPath;
  }

  // `join('http://', 'www.example.com')`
  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
    aRootUrl.host = aPath;
    return urlGenerate(aRootUrl);
  }

  var joined = aPath.charAt(0) === '/'
    ? aPath
    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

  if (aRootUrl) {
    aRootUrl.path = joined;
    return urlGenerate(aRootUrl);
  }
  return joined;
}
exports.join = join;

exports.isAbsolute = function (aPath) {
  return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp);
};

/**
 * Make a path relative to a URL or another path.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be made relative to aRoot.
 */
function relative(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }

  aRoot = aRoot.replace(/\/$/, '');

  // It is possible for the path to be above the root. In this case, simply
  // checking whether the root is a prefix of the path won't work. Instead, we
  // need to remove components from the root one by one, until either we find
  // a prefix that fits, or we run out of components to remove.
  var level = 0;
  while (aPath.indexOf(aRoot + '/') !== 0) {
    var index = aRoot.lastIndexOf("/");
    if (index < 0) {
      return aPath;
    }

    // If the only part of the root that is left is the scheme (i.e. http://,
    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
    // have exhausted all components, so the path is not relative to the root.
    aRoot = aRoot.slice(0, index);
    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
      return aPath;
    }

    ++level;
  }

  // Make sure we add a "../" for each component we removed from the root.
  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
}
exports.relative = relative;

var supportsNullProto = (function () {
  var obj = Object.create(null);
  return !('__proto__' in obj);
}());

function identity (s) {
  return s;
}

/**
 * Because behavior goes wacky when you set `__proto__` on objects, we
 * have to prefix all the strings in our set with an arbitrary character.
 *
 * See https://github.com/mozilla/source-map/pull/31 and
 * https://github.com/mozilla/source-map/issues/30
 *
 * @param String aStr
 */
function toSetString(aStr) {
  if (isProtoString(aStr)) {
    return '$' + aStr;
  }

  return aStr;
}
exports.toSetString = supportsNullProto ? identity : toSetString;

function fromSetString(aStr) {
  if (isProtoString(aStr)) {
    return aStr.slice(1);
  }

  return aStr;
}
exports.fromSetString = supportsNullProto ? identity : fromSetString;

function isProtoString(s) {
  if (!s) {
    return false;
  }

  var length = s.length;

  if (length < 9 /* "__proto__".length */) {
    return false;
  }

  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
      s.charCodeAt(length - 9) !== 95  /* '_' */) {
    return false;
  }

  for (var i = length - 10; i >= 0; i--) {
    if (s.charCodeAt(i) !== 36 /* '$' */) {
      return false;
    }
  }

  return true;
}

/**
 * Comparator between two mappings where the original positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same original source/line/column, but different generated
 * line and column the same. Useful when searching for a mapping with a
 * stubbed out mapping.
 */
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
  var cmp = mappingA.source - mappingB.source;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0 || onlyCompareOriginal) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  return mappingA.name - mappingB.name;
}
exports.compareByOriginalPositions = compareByOriginalPositions;

/**
 * Comparator between two mappings with deflated source and name indices where
 * the generated positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same generated line and column, but different
 * source/name/original line and column the same. Useful when searching for a
 * mapping with a stubbed out mapping.
 */
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0 || onlyCompareGenerated) {
    return cmp;
  }

  cmp = mappingA.source - mappingB.source;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return mappingA.name - mappingB.name;
}
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

function strcmp(aStr1, aStr2) {
  if (aStr1 === aStr2) {
    return 0;
  }

  if (aStr1 > aStr2) {
    return 1;
  }

  return -1;
}

/**
 * Comparator between two mappings with inflated source and name strings where
 * the generated positions are compared.
 */
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;

},{}],130:[function(require,module,exports){
/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
exports.SourceNode = require('./lib/source-node').SourceNode;

},{"./lib/source-map-consumer":126,"./lib/source-map-generator":127,"./lib/source-node":128}],131:[function(require,module,exports){
'use strict';
module.exports = false;

},{}],132:[function(require,module,exports){
module.exports={
  "_args": [
    [
      {
        "raw": "turbo-carto@0.19.0",
        "scope": null,
        "escapedName": "turbo-carto",
        "name": "turbo-carto",
        "rawSpec": "0.19.0",
        "spec": "0.19.0",
        "type": "version"
      },
      "/Users/ruben/Projects/Carto/torque"
    ]
  ],
  "_from": "turbo-carto@0.19.0",
  "_id": "turbo-carto@0.19.0",
  "_inCache": true,
  "_location": "/turbo-carto",
  "_nodeVersion": "0.10.43",
  "_npmOperationalInternal": {
    "host": "packages-18-east.internal.npmjs.com",
    "tmp": "tmp/turbo-carto-0.19.0.tgz_1481553795718_0.1705001255031675"
  },
  "_npmUser": {
    "name": "xavijam",
    "email": "xavijam@gmail.com"
  },
  "_npmVersion": "2.14.20",
  "_phantomChildren": {},
  "_requested": {
    "raw": "turbo-carto@0.19.0",
    "scope": null,
    "escapedName": "turbo-carto",
    "name": "turbo-carto",
    "rawSpec": "0.19.0",
    "spec": "0.19.0",
    "type": "version"
  },
  "_requiredBy": [
    "/"
  ],
  "_resolved": "http://registry.npmjs.org/turbo-carto/-/turbo-carto-0.19.0.tgz",
  "_shasum": "83fb1932acd42acb426312eef216b5f6ac34708e",
  "_shrinkwrap": null,
  "_spec": "turbo-carto@0.19.0",
  "_where": "/Users/ruben/Projects/Carto/torque",
  "author": {
    "name": "CartoDB",
    "email": "wadus@cartodb.com",
    "url": "http://cartodb.com/"
  },
  "bugs": {
    "url": "https://github.com/CartoDB/turbo-carto/issues"
  },
  "contributors": [
    {
      "name": "Raul Ochoa",
      "email": "rochoa@cartodb.com"
    }
  ],
  "dependencies": {
    "cartocolor": "4.0.0",
    "colorbrewer": "1.0.0",
    "debug": "2.2.0",
    "es6-promise": "3.1.2",
    "postcss": "5.0.19",
    "postcss-value-parser": "3.3.0"
  },
  "description": "CartoCSS preprocessor",
  "devDependencies": {
    "browser-request": "^0.3.3",
    "browserify": "^12.0.1",
    "istanbul": "^0.4.1",
    "jshint": "^2.9.1-rc2",
    "mocha": "^2.3.4",
    "querystring": "^0.2.0",
    "request": "^2.67.0",
    "semistandard": "^7.0.4",
    "semistandard-format": "^2.1.0",
    "yargs": "^3.31.0"
  },
  "directories": {},
  "dist": {
    "shasum": "83fb1932acd42acb426312eef216b5f6ac34708e",
    "tarball": "https://registry.npmjs.org/turbo-carto/-/turbo-carto-0.19.0.tgz"
  },
  "gitHead": "e4bb6dddbdb5275dd2ba5ca0922c831690c40797",
  "homepage": "https://github.com/CartoDB/turbo-carto#readme",
  "license": "BSD-3-Clause",
  "main": "src/index.js",
  "maintainers": [
    {
      "name": "cartodb",
      "email": "npm@cartodb.com"
    },
    {
      "name": "dgaubert",
      "email": "danielgarciaaubert@gmail.com"
    },
    {
      "name": "xavijam",
      "email": "xavijam@gmail.com"
    }
  ],
  "name": "turbo-carto",
  "optionalDependencies": {},
  "readme": "ERROR: No README data found!",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/CartoDB/turbo-carto.git"
  },
  "scripts": {
    "test": "make test-all"
  },
  "semistandard": {
    "globals": [
      "describe",
      "it"
    ],
    "ignore": [
      "examples/app.js"
    ]
  },
  "version": "0.19.0"
}

},{}],133:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var FnExecutor = require('./executor');

function FnBuilder (datasource) {
  this.datasource = datasource;
  this.fnExecutors = [];
}

module.exports = FnBuilder;

FnBuilder.prototype.add = function (decl, fnNode, metadataHolder) {
  this.fnExecutors.push({ decl: decl, fnExecutor: createFnExecutor(fnNode, this.datasource, decl, metadataHolder) });
};

function createFnExecutor (fnNode, datasource, decl, metadataHolder) {
  var fnArgs = [];
  if (Array.isArray(fnNode.nodes)) {
    fnArgs = fnNode.nodes.reduce(function (args, nestedFnNode) {
      switch (nestedFnNode.type) {
        case 'word':
          if (Number.isFinite(+nestedFnNode.value)) {
            args.push(+nestedFnNode.value);
          } else {
            args.push(nestedFnNode.value);
          }
          break;
        case 'string':
          args.push(nestedFnNode.value);
          break;
        case 'function':
          args.push(createFnExecutor(nestedFnNode, datasource, decl, metadataHolder));
          break;
        default:
      // pass: includes 'div', 'space', 'comment'
      }
      return args;
    }, []);
  }
  return new FnExecutor(datasource, fnNode.value, fnArgs, decl, metadataHolder);
}

FnBuilder.prototype.exec = function () {
  var executorsExec = this.fnExecutors.map(function (fnExecutor) {
    return fnExecutor.fnExecutor.exec();
  });

  return Promise.all(executorsExec);
};

},{"./executor":134,"es6-promise":82}],134:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var debug = require('../helper/debug')('fn-executor');
var FnFactory = require('./factory');

function FnExecutor (datasource, fnName, fnArgs, decl, metadataHolder) {
  this.datasource = datasource;
  this.fnName = fnName;
  this.args = fnArgs;
  this.decl = decl;
  this.metadataHolder = metadataHolder;
}

module.exports = FnExecutor;

FnExecutor.prototype.exec = function () {
  var self = this;
  debug('[ENTERING] Fn.prototype.exec %s(%j)', self.fnName, self.args);

  var backendFn = FnFactory.create(self.fnName, self.datasource, self.decl, self.metadataHolder);

  return Promise.all(self.getNestedFns())
    .then(function (nestedFnResults) {
      debug('[QUEUE DONE] %s=%j', self.fnName, nestedFnResults);

      nestedFnResults.forEach(function (nestedFnResult) {
        self.args[nestedFnResult.index] = nestedFnResult.result;
      });

      return backendFn.apply(backendFn, self.args);
    });
};

FnExecutor.prototype.getNestedFns = function () {
  var self = this;

  return self.getNestedFnIndexes()
    .map(function (nestedFnIndex) {
      return self.execFn(nestedFnIndex);
    });
};

FnExecutor.prototype.getNestedFnIndexes = function () {
  return this.args.reduce(function (nestedFns, arg, index) {
    if (arg instanceof FnExecutor) {
      nestedFns.push(index);
    }
    return nestedFns;
  }, []);
};

FnExecutor.prototype.execFn = function (nestedFnIndex) {
  return this.args[nestedFnIndex].exec()
    .then(function (result) {
      return { index: nestedFnIndex, result: result };
    });
};

},{"../helper/debug":149,"./factory":135,"es6-promise":82}],135:[function(require,module,exports){
'use strict';

var fns = [
  require('./fn-buckets'),
  require('./fn-buckets-category'),
  require('./fn-buckets-equal'),
  require('./fn-buckets-headtails'),
  require('./fn-buckets-jenks'),
  require('./fn-buckets-quantiles'),
  require('./fn-cartocolor'),
  require('./fn-colorbrewer'),
  require('./fn-ramp'),
  require('./fn-range')
];
var fnMap = fns.reduce(function (fnMap, fn) {
  fnMap[fn.fnName] = fn;
  return fnMap;
}, {});
var fnIdentity = require('./fn-identity');
var fnAnonymousTuple = require('./fn-anonymous-tuple');

var FnFactory = {
  create: function (fnName, datasource, decl, metadataHolder) {
    if (fnName === '') {
      return fnAnonymousTuple();
    }

    var fn = fnMap[fnName];
    if (fn) {
      return fn(datasource, decl, metadataHolder);
    }

    return fnIdentity(fnName);
  }
};

module.exports = FnFactory;

},{"./fn-anonymous-tuple":136,"./fn-buckets":142,"./fn-buckets-category":137,"./fn-buckets-equal":138,"./fn-buckets-headtails":139,"./fn-buckets-jenks":140,"./fn-buckets-quantiles":141,"./fn-cartocolor":143,"./fn-colorbrewer":144,"./fn-identity":145,"./fn-ramp":146,"./fn-range":147}],136:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var debug = require('../helper/debug')('fn-anonymous-tuple');
var ValuesResult = require('../model/values-result');

module.exports = function () {
  return function fn$anonymousTuple () {
    debug('fn$anonymousTuple(%j)', arguments);
    var args = arguments;
    return new Promise(function (resolve) {
      var tupleValues = Object.keys(args).map(function (k) { return args[k]; });
      resolve(new ValuesResult(tupleValues));
    });
  };
};

module.exports.fnName = 'anonymousTuple';

},{"../helper/debug":149,"../model/values-result":159,"es6-promise":82}],137:[function(require,module,exports){
'use strict';

var createBucketsFn = require('./fn-buckets').createBucketsFn;

var FN_NAME = 'category';

module.exports = function (datasource) {
  return createBucketsFn(datasource, FN_NAME, '==');
};

module.exports.fnName = FN_NAME;

},{"./fn-buckets":142}],138:[function(require,module,exports){
'use strict';

var createBucketsFn = require('./fn-buckets').createBucketsFn;

var FN_NAME = 'equal';

module.exports = function (datasource) {
  return createBucketsFn(datasource, FN_NAME, '>');
};

module.exports.fnName = FN_NAME;

},{"./fn-buckets":142}],139:[function(require,module,exports){
'use strict';

var createBucketsFn = require('./fn-buckets').createBucketsFn;

var FN_NAME = 'headtails';

module.exports = function (datasource) {
  return createBucketsFn(datasource, FN_NAME, '<');
};

module.exports.fnName = FN_NAME;

},{"./fn-buckets":142}],140:[function(require,module,exports){
'use strict';

var createBucketsFn = require('./fn-buckets').createBucketsFn;

var FN_NAME = 'jenks';

module.exports = function (datasource) {
  return createBucketsFn(datasource, FN_NAME, '>');
};

module.exports.fnName = FN_NAME;

},{"./fn-buckets":142}],141:[function(require,module,exports){
'use strict';

var createBucketsFn = require('./fn-buckets').createBucketsFn;

var FN_NAME = 'quantiles';

module.exports = function (datasource) {
  return createBucketsFn(datasource, FN_NAME, '>');
};

module.exports.fnName = FN_NAME;

},{"./fn-buckets":142}],142:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var debug = require('../helper/debug')('fn-buckets');
var columnName = require('../helper/column-name');
var TurboCartoError = require('../helper/turbo-carto-error');
var FiltersResult = require('../model/filters-result');
var LazyFiltersResult = require('../model/lazy-filters-result');

function fnBuckets (datasource) {
  return function fn$buckets (column, quantificationMethod, numBuckets) {
    debug('fn$buckets(%j)', arguments);
    debug('Using "%s" datasource to calculate buckets', datasource.getName());

    return new Promise(function (resolve, reject) {
      if (!quantificationMethod) {
        return reject(new TurboCartoError('Missing quantification method in buckets function'));
      }
      numBuckets = Number.isFinite(+numBuckets) ? +numBuckets : 5;
      datasource.getRamp(columnName(column), numBuckets, quantificationMethod, function (err, filters) {
        if (err) {
          return reject(
            new TurboCartoError('unable to compute ramp,', err)
          );
        }
        var strategy = 'max';
        var stats = {};
        if (!Array.isArray(filters)) {
          strategy = filters.strategy || 'max';
          stats = filters.stats;
          filters = filters.ramp;
        }
        resolve(new FiltersResult(filters, strategy, stats));
      });
    });
  };
}

module.exports = fnBuckets;
module.exports.fnName = 'buckets';

module.exports.createBucketsFn = function (datasource, alias, defaultStrategy) {
  return function fn$bucketsFn (numBuckets) {
    debug('fn$%s(%j)', alias, arguments);
    debug('Using "%s" datasource to calculate %s', datasource.getName(), alias);
    return new Promise(function (resolve) {
      return resolve(new LazyFiltersResult(function (column, strategy) {
        return fnBuckets(datasource)(column, alias, numBuckets).then(function (filters) {
          filters.strategy = strategy || defaultStrategy;
          return new Promise(function (resolve) {
            return resolve(filters);
          });
        });
      }));
    });
  };
};

},{"../helper/column-name":148,"../helper/debug":149,"../helper/turbo-carto-error":152,"../model/filters-result":154,"../model/lazy-filters-result":156,"es6-promise":82}],143:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var cartocolor = require('cartocolor');
var ValuesResult = require('../model/values-result');
var minMaxKeys = require('../helper/min-max-keys');
var debug = require('../helper/debug')('fn-cartocolor');

module.exports = function () {
  return function fn$cartocolor (scheme, numberDataClasses) {
    debug('fn$cartocolor(%j)', arguments);
    return new Promise(function (resolve, reject) {
      if (!cartocolor.hasOwnProperty(scheme)) {
        return reject(new Error('Invalid cartocolor scheme: "' + scheme + '"'));
      }
      var result = cartocolor[scheme];
      var minMax = minMaxKeys(result);
      numberDataClasses = Math.min(minMax.max, Math.max(minMax.min, numberDataClasses || 5));
      resolve(new ValuesResult(result, numberDataClasses, null, minMax.max));
    });
  };
};

module.exports.fnName = 'cartocolor';

},{"../helper/debug":149,"../helper/min-max-keys":151,"../model/values-result":159,"cartocolor":76,"es6-promise":82}],144:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var colorbrewer = require('colorbrewer');
var ValuesResult = require('../model/values-result');
var minMaxKeys = require('../helper/min-max-keys');
var debug = require('../helper/debug')('fn-colorbrewer');

module.exports = function () {
  return function fn$colorbrewer (scheme, numberDataClasses) {
    debug('fn$colorbrewer(%j)', arguments);
    return new Promise(function (resolve, reject) {
      if (!colorbrewer.hasOwnProperty(scheme)) {
        return reject(new Error('Invalid colorbrewer scheme: "' + scheme + '"'));
      }
      var result = colorbrewer[scheme];
      var minMax = minMaxKeys(result);
      numberDataClasses = Math.min(minMax.max, Math.max(minMax.min, numberDataClasses || 5));
      resolve(new ValuesResult(result, numberDataClasses, null, minMax.max));
    });
  };
};

module.exports.fnName = 'colorbrewer';

},{"../helper/debug":149,"../helper/min-max-keys":151,"../model/values-result":159,"colorbrewer":78,"es6-promise":82}],145:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var debug = require('../helper/debug')('fn-identity');

module.exports = function (fnName) {
  return function fn$identity () {
    debug('fn$identity(%j)', arguments);

    var args = new Array(arguments.length);
    for (var i = 0; i < args.length; ++i) {
      // i is always valid index in the arguments object
      if (typeof arguments[i] === 'string') {
        args[i] = '\'' + arguments[i] + '\'';
      } else {
        args[i] = arguments[i];
      }
    }

    return Promise.resolve(fnName + '(' + args.join(',') + ')');
  };
};

module.exports.fnName = 'pass';

},{"../helper/debug":149,"es6-promise":82}],146:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var debug = require('../helper/debug')('fn-ramp');
var columnName = require('../helper/column-name');
var TurboCartoError = require('../helper/turbo-carto-error');
var isResult = require('../model/is-result');
var linearBuckets = require('../helper/linear-buckets');
var ValuesResult = require('../model/values-result');
var FiltersResult = require('../model/filters-result');
var LazyFiltersResult = require('../model/lazy-filters-result');
var RampResult = require('../model/ramp/ramp-result');

function createSplitStrategy (mapping) {
  return function splitStrategy (column, rampResult, stats, decl, metadataHolder) {
    var allFilters = rampResult.filter(evenIndex);
    var values = rampResult.filter(reverse(evenIndex));
    var filters = allFilters.slice(1);
    if (mapping === '=') {
      values = values.slice(1).concat([rampResult.filter(reverse(evenIndex))[0]]);
    }
    filters = filters.filter(reverse(isNull));
    var ramp = new RampResult(new ValuesResult(values), new FiltersResult(filters, null, stats), mapping);
    return ramp.process(column, decl, metadataHolder);
  };
}

function evenIndex (value, index) {
  return index % 2 === 0;
}

function isNull (val) {
  return val === null;
}

function reverse (fn, ctx) {
  return function () {
    return !fn.apply(ctx, arguments);
  };
}

var strategy = {
  max: function maxStrategy (column, rampResult, stats, decl, metadataHolder) {
    var values = rampResult.filter(reverse(evenIndex));
    var filters = rampResult.filter(evenIndex).filter(reverse(isNull));
    var ramp = new RampResult(new ValuesResult(values), new FiltersResult(filters, null, stats), '>');
    return ramp.process(column, decl, metadataHolder);
  },

  split: createSplitStrategy('>'),

  exact: createSplitStrategy('='),

  '=': createSplitStrategy('=')
};

module.exports = function (datasource, decl, metadataHolder) {
  return function fn$ramp (column, /* ... */args) {
    debug('fn$ramp(%j)', arguments);
    debug('Using "%s" datasource to calculate ramp', datasource.getName());

    args = Array.prototype.slice.call(arguments, 1);

    return ramp(datasource, column, args)
      .then(function (rampResult) {
        if (rampResult.constructor === RampResult) {
          return rampResult.process(columnName(column), decl, metadataHolder);
        }
        var strategyFn = strategy.hasOwnProperty(rampResult.strategy) ? strategy[rampResult.strategy] : strategy.max;
        return strategyFn(columnName(column), rampResult.ramp, rampResult.stats, decl, metadataHolder);
      })
      .catch(function (err) {
        var context = {};
        if (decl.parent) {
          context.selector = decl.parent.selector;
        }
        if (decl.source) {
          context.source = {
            start: decl.source.start,
            end: decl.source.end
          };
        }
        throw new TurboCartoError('Failed to process "' + decl.prop + '" property:', err, context);
      });
  };
};

/**
 * @param datasource
 * @param {String} column
 * @param args
 *
 * ####################
 * ###  COLOR RAMP  ###
 * ####################
 *
 * [colorbrewer(Greens, 7), jenks]
 *  <Array>scheme         , <String>method
 *
 * [colorbrewer(Greens, 7)]
 *  <Array>scheme
 *
 * ####################
 * ### NUMERIC RAMP ###
 * ####################
 *
 * [10            , 20]
 *  <Number>minVal, <Number>maxValue
 *
 * [10            , 20,             , jenks]
 *  <Number>minVal, <Number>maxValue, <String>method
 *
 * [10            , 20,             , 4]
 *  <Number>minVal, <Number>maxValue, <Number>numBuckets
 *
 * [10            , 20,             , 4              , jenks]
 *  <Number>minVal, <Number>maxValue, <Number>numBuckets, <String>method
 */
function ramp (datasource, column, args) {
  if (args.length === 0) {
    return Promise.reject(
      new TurboCartoError('invalid number of arguments')
    );
  }

  /**
   * Overload scenarios to support
   * marker-width: ramp([price], 4, 100);
   * marker-width: ramp([price], 4, 100, method);
   * marker-width: ramp([price], 4, 100, 5, method);
   * marker-width: ramp([price], 4, 100, 3, (100, 200, 1000));
   * marker-width: ramp([price], 4, 100, (100, 150, 250, 200, 1000));
   */
  if (Number.isFinite(args[0])) {
    return compatibilityNumericRamp(datasource, column, args);
  }

  /**
   * Overload methods to support
   * marker-fill: ramp([price], colorbrewer(Reds));
   * marker-fill: ramp([price], colorbrewer(Reds), jenks);
   */
  if (!isResult(args[1])) {
    return compatibilityValuesRamp(datasource, column, args);
  }

  /**
   * Overload methods to support from here
   * marker-fill: ramp([price], colorbrewer(Reds), (100, 200, 300, 400, 500));
   * marker-fill: ramp([price], colorbrewer(Reds), (100, 200, 300, 400, 500), =);
   * marker-fill: ramp([price], (...values), (...filters), [mapping]);
   */
  var values = args[0];
  var filters = args[1];
  var mapping = args[2];
  var strategy = strategyFromMapping(mapping);
  filters = filters.is(ValuesResult) ? new FiltersResult(filters.get(), strategy) : filters;
  if (filters.is(LazyFiltersResult)) {
    return filters.get(column, strategy).then(createRampFn(values));
  } else {
    return Promise.resolve(filters).then(createRampFn(values));
  }
}

var oldMappings2Strategies = {
  quantiles: 'max',
  equal: 'max',
  jenks: 'max',
  headtails: 'split',
  category: 'exact'
};

function strategyFromMapping (mapping) {
  if (oldMappings2Strategies.hasOwnProperty(mapping)) {
    return oldMappings2Strategies[mapping];
  }
  return mapping;
}

/**
 * Overload methods to support
 * marker-fill: ramp([price], colorbrewer(Reds));
 * marker-fill: ramp([price], colorbrewer(Reds), jenks);
 */
function compatibilityValuesRamp (datasource, column, args) {
  var values = args[0];
  var method = (args[1] || 'quantiles').toLowerCase();
  var numBuckets = values.getLength();
  return getRamp(datasource, column, numBuckets, method).then(compatibilityCreateRampFn(values));
}

/**
 * Overload scenarios to support
 * marker-width: ramp([price], 4, 100);
 * marker-width: ramp([price], 4, 100, method);
 * marker-width: ramp([price], 4, 100, 5, method); √
 * marker-width: ramp([price], 4, 100, 3, (100, 200, 1000)); √
 * marker-width: ramp([price], 4, 100, (100, 150, 250, 200, 1000)); √
 */
function compatibilityNumericRamp (datasource, column, args) {
  // jshint maxcomplexity:9
  if (args.length < 2) {
    return Promise.reject(
      new TurboCartoError('invalid number of arguments')
    );
  }

  var min = +args[0];
  var max = +args[1];

  var numBuckets;
  var filters = null;
  var method;

  if (Number.isFinite(args[2])) {
    numBuckets = args[2];

    if (isResult(args[3])) {
      filters = args[3];
      method = null;
      if (filters.getLength() !== numBuckets) {
        return Promise.reject(
          new TurboCartoError(
              'invalid ramp length, got ' + filters.getLength() + ' values, expected ' + numBuckets
          )
        );
      }
    } else {
      filters = null;
      method = args[3];
    }
  } else if (isResult(args[2])) {
    filters = args[2];
    numBuckets = filters.getLength();
    method = null;
  } else {
    filters = null;
    numBuckets = 5;
    method = args[2];
  }

  var values = new ValuesResult([min, max], numBuckets, linearBuckets, Number.POSITIVE_INFINITY);

  if (filters === null) {
    // normalize method
    method = (method || 'quantiles').toLowerCase();
    return getRamp(datasource, column, numBuckets, method).then(compatibilityCreateRampFn(values));
  }

  filters = filters.is(FiltersResult) ? filters : new FiltersResult(filters.get(), 'max');
  return Promise.resolve(filters).then(compatibilityCreateRampFn(values));
}

function getRamp (datasource, column, buckets, method) {
  return new Promise(function (resolve, reject) {
    datasource.getRamp(columnName(column), buckets, method, function (err, filters) {
      if (err) {
        return reject(
          new TurboCartoError('unable to compute ramp,', err)
        );
      }
      var strategy = 'max';
      var stats = {};
      if (!Array.isArray(filters)) {
        strategy = filters.strategy || 'max';
        stats = filters.stats;
        filters = filters.ramp;
      }
      resolve(new FiltersResult(filters, strategy, stats));
    });
  });
}

function compatibilityCreateRampFn (valuesResult) {
  return function prepareRamp (filtersResult) {
    var buckets = Math.min(valuesResult.getLength(), filtersResult.getLength());

    var i;
    var rampResult = [];

    var filters = filtersResult.get();
    var values = valuesResult.get();

    if (buckets > 0) {
      for (i = 0; i < buckets; i++) {
        rampResult.push(filters[i]);
        rampResult.push(values[i]);
      }
    } else {
      rampResult.push(null, values[0]);
    }

    return { ramp: rampResult, strategy: filtersResult.getStrategy(), stats: filtersResult.stats };
  };
}

function createRampFn (valuesResult) {
  return function prepareRamp (filtersResult) {
    if (RampResult.supports(filtersResult.getStrategy())) {
      return new RampResult(valuesResult, filtersResult, filtersResult.getStrategy());
    }

    var buckets = Math.min(valuesResult.getMaxSize(), filtersResult.getMaxSize());

    var i;
    var rampResult = [];

    var filters = filtersResult.get();
    var values = valuesResult.get(buckets);

    if (buckets > 0) {
      for (i = 0; i < buckets; i++) {
        rampResult.push(filters[i]);
        rampResult.push(values[i]);
      }
    } else {
      rampResult.push(null, values[0]);
    }

    return { ramp: rampResult, strategy: filtersResult.getStrategy(), stats: filtersResult.stats };
  };
}

module.exports.fnName = 'ramp';

},{"../helper/column-name":148,"../helper/debug":149,"../helper/linear-buckets":150,"../helper/turbo-carto-error":152,"../model/filters-result":154,"../model/is-result":155,"../model/lazy-filters-result":156,"../model/ramp/ramp-result":158,"../model/values-result":159,"es6-promise":82}],147:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var ValuesResult = require('../model/values-result');
var debug = require('../helper/debug')('fn-range');
var linearBuckets = require('../helper/linear-buckets');

module.exports = function () {
  return function fn$range (min, max, numBuckets) {
    debug('fn$range(%j)', arguments);
    return new Promise(function (resolve) {
      var result = [min, max];
      numBuckets = Number.isFinite(numBuckets) ? numBuckets : 5;
      resolve(new ValuesResult(result, numBuckets, linearBuckets, Number.POSITIVE_INFINITY));
    });
  };
};

module.exports.fnName = 'range';

},{"../helper/debug":149,"../helper/linear-buckets":150,"../model/values-result":159,"es6-promise":82}],148:[function(require,module,exports){
'use strict';

function columnName (column) {
  return column.replace('[', '').replace(']', '');
}

module.exports = columnName;

},{}],149:[function(require,module,exports){
'use strict';

var debug = require('debug');
module.exports = function turboCartoDebug (ns) {
  return debug(['turbo-carto', ns].join(':'));
};

},{"debug":80}],150:[function(require,module,exports){
'use strict';

module.exports = function (min, max, numBuckets) {
  if (Array.isArray(min)) {
    numBuckets = max;
    max = min[1];
    min = min[0];
  }
  var buckets = [];
  var range = max - min;
  var width = range / (numBuckets - 1);
  if (width === Number.POSITIVE_INFINITY || width === Number.NEGATIVE_INFINITY) {
    width = 0;
  }
  for (var i = 0; i < numBuckets; i++) {
    buckets.push(min + i * width);
  }
  return buckets;
};

},{}],151:[function(require,module,exports){
'use strict';

function minMaxNumericKey (obj) {
  return Object.keys(obj).reduce(function (minMax, k) {
    if (Number.isFinite(+k)) {
      if (minMax.min === null) {
        minMax.min = +k;
      }
      if (minMax.max === null) {
        minMax.max = +k;
      }
      minMax.max = Math.max(minMax.max, +k);
      minMax.min = Math.min(minMax.min, +k);
    }
    return minMax;
  }, { min: null, max: null });
}

module.exports = minMaxNumericKey;

},{}],152:[function(require,module,exports){
'use strict';

function TurboCartoError (message, originalErr, context) {
  Error.captureStackTrace(this, this.constructor);
  this.name = this.constructor.name;

  if (originalErr) {
    message += ' ' + originalErr.message;
  }

  this.message = message;
  this.originalErr = originalErr;
  this.context = context;
}

require('util').inherits(TurboCartoError, Error);

module.exports = TurboCartoError;

},{"util":166}],153:[function(require,module,exports){
'use strict';

var TurboCarto = require('./turbo-carto');

function turbocarto (cartocss, datasource, callback) {
  new TurboCarto(cartocss, datasource).getCartocss(callback);
}

module.exports = turbocarto;
module.exports.TurboCarto = TurboCarto;
module.exports.version = require('../package.json').version;

},{"../package.json":132,"./turbo-carto":161}],154:[function(require,module,exports){
'use strict';

var util = require('util');
var ValuesResult = require('./values-result');

function FiltersResult (result, strategy, stats) {
  ValuesResult.call(this, result, result.length);
  this.strategy = strategy;
  this.stats = stats;
}

util.inherits(FiltersResult, ValuesResult);

module.exports = FiltersResult;

FiltersResult.prototype.getStrategy = function () {
  if (this.result.some(nonNumeric)) {
    return '=';
  }
  return this.strategy;
};

function nonNumeric (item) {
  return !Number.isFinite(item);
}

},{"./values-result":159,"util":166}],155:[function(require,module,exports){
'use strict';

var ValuesResult = require('./values-result');
var FiltersResult = require('./filters-result');
var LazyFiltersResult = require('./lazy-filters-result');

function isResult (obj) {
  return typeof obj === 'object' && obj !== null &&
    (obj.constructor === ValuesResult || obj.constructor === FiltersResult || obj.constructor === LazyFiltersResult);
}

module.exports = isResult;

},{"./filters-result":154,"./lazy-filters-result":156,"./values-result":159}],156:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var util = require('util');
var FiltersResult = require('./filters-result');

function LazyFiltersResult (filterGenerator) {
  this.filterGenerator = filterGenerator;
}

util.inherits(LazyFiltersResult, FiltersResult);

module.exports = LazyFiltersResult;

LazyFiltersResult.prototype.get = function (column, strategy) {
  return this.filterGenerator(column, strategy);
};


},{"./filters-result":154,"es6-promise":82,"util":166}],157:[function(require,module,exports){
'use strict';

function MetadataHolder () {
  this.rules = [];
}

module.exports = MetadataHolder;

MetadataHolder.prototype.add = function (rule) {
  this.rules.push(rule);
};

},{}],158:[function(require,module,exports){
'use strict';

var TurboCartoError = require('../../helper/turbo-carto-error');
var postcss = require('postcss');

function RampResult (values, filters, mapping) {
  this.values = values;
  this.filters = filters;
  this.mapping = mapping || '>';
  this.mapping = this.mapping === '==' ? '=' : this.mapping;
}

module.exports = RampResult;

var SUPPORTED_STRATEGIES = {
  /**
   * `equality` will get as many values - 1, and will filter `column` with those filters,
   * last value will be used as default value.
   * Example:
   *  ```css
   *  marker-fill: ramp([cat_column], (red, green, blue, black), (1, 2, 3), ==);
   *  ```
   *
   * will generate:
   *  ```css
   *  marker-width: black;
   *  [cat_column = 1] {
   *    marker-width: red;
   *  }
   *  [cat_column = 2] {
   *    marker-width: green;
   *  }
   *  [cat_column = 3] {
   *    marker-width: blue;
   *  }
   *  ```
   *
   * This is useful for category ramps.
   * This works for numeric and string filters.
   */
  '=': 'equality',
  '==': 'equality',

  /**
   * `greater_than` and `greater_than_or_equal` will use first value as default value, and will break by first filter.
   * Example:
   *  ```css
   *  marker-width: ramp([price], (4, 8, 16, 32), (100, 200, 500, 600), >);
   *  ```
   *
   * Will generate:
   *  ```css
   *  marker-width: 4;
   *  [price > 100] {
   *    marker-width: 8;
   *  }
   *  [price > 200] {
   *    marker-width: 16;
   *  }
   *  [price > 500] {
   *    marker-width: 32;
   *  }
   *  ```
   *
   *
   *
   * This is useful for quantification methods like jenks, quantiles, and equal intervals.
   * This only work for numeric filters, otherwise it will throw an error.
   */
  '>': 'greater_than_or_equal',
  '>=': 'greater_than_or_equal',

  /**
   * Example:
   *  ```css
   *  marker-width: ramp([price], (4, 8, 16, 32), (50, 75.5, 88, 94.5), <);
   *  ```
   *
   * Will generate:
   *  ```css
   *  marker-width: 32;
   *  [price < 50] {
   *    marker-width: 4;
   *  }
   *  [price < 75.5] {
   *    marker-width: 8;
   *  }
   *  [price < 88] {
   *    marker-width: 16;
   *  }
   *  ```
   *
   * This is useful for quantification methods like headtails.
   * This only work for numeric filters, otherwise it will throw an error.
   */
  '<': 'less_than_or_equal',
  '<=': 'less_than_or_equal'

  /**
   * Future mappings
   * '!=': 'inequality',
   * 'in': 'set_inclusion',
   * '!in': 'set_exclusion',
   */
};

var FILTER_TYPE = {
  CATEGORY: 'category',
  DEFAULT: 'default',
  RANGE: 'range'
};

RampResult.prototype.process = function (column, decl, metadataHolder) {
  var strategy = SUPPORTED_STRATEGIES[this.mapping];
  if (strategy === SUPPORTED_STRATEGIES['<']) {
    return this.processLessThanOrEqual(column, decl, metadataHolder);
  } else if (strategy === SUPPORTED_STRATEGIES['==']) {
    return this.processEquality(column, decl, metadataHolder);
  } else {
    return this.processGreaterThanOrEqual(column, decl, metadataHolder);
  }
};

RampResult.supports = function (strategy) {
  return SUPPORTED_STRATEGIES.hasOwnProperty(strategy) || !strategy;
};

RampResult.prototype.processEquality = function (column, decl, metadataHolder) {
  if ((this.filters.getLength()) > this.values.getMaxSize()) {
    throw new TurboCartoError('`' + this.mapping + '` requires more or same values than filters to work.');
  }

  var values = this.values.get(this.filters.getLength() + 1);
  var filters = this.filters.get();

  var initialDecl = decl;
  var defaultValue = null;
  if (values.length !== filters.length) {
    defaultValue = values[values.length - 1];
    initialDecl = postcss.decl({ prop: decl.prop, value: defaultValue });
    decl.replaceWith(initialDecl);
  }

  var range = {
    start: 0,
    end: filters.length
  };
  var indexOffset = 0;

  var result = this.processGeneric(initialDecl, column, defaultValue, values, filters, range, indexOffset);

  if (values.length === filters.length) {
    decl.remove();
  }

  if (metadataHolder) {
    var metadataRule = {
      selector: selector(initialDecl.parent),
      prop: initialDecl.prop,
      column: column,
      mapping: this.mapping,
      buckets: [],
      stats: {}
    };

    metadataRule.buckets = filters.map(function (filterRaw, index) {
      return {
        filter: {
          name: filterRaw,
          type: FILTER_TYPE.CATEGORY
        },
        value: values[index]
      };
    });

    if (defaultValue !== null) {
      metadataRule.buckets.push({
        filter: {
          type: FILTER_TYPE.DEFAULT
        },
        value: defaultValue
      });
    }

    metadataHolder.add(metadataRule);
  }

  return result;
};

RampResult.prototype.processGreaterThanOrEqual = function (column, decl, metadataHolder) {
  var buckets = Math.min(this.values.getMaxSize(), this.filters.getMaxSize());

  var values = this.values.get((buckets <= 1) ? buckets + 1 : buckets);
  var filters = this.filters.get(buckets);

  var defaultValue = values[0];
  var initialDecl = postcss.decl({ prop: decl.prop, value: defaultValue });
  decl.replaceWith(initialDecl);

  var range = {
    start: 0,
    end: Math.max(filters.length - 1, 1)
  };
  var indexOffset = 1;

  if (metadataHolder) {
    var stats = defaultStats(this.filters.stats);
    var metadataRule = {
      selector: selector(initialDecl.parent),
      prop: initialDecl.prop,
      column: column,
      mapping: this.mapping,
      buckets: [],
      stats: {
        filter_avg: stats.avg
      }
    };

    var previousFilter = null;
    if (Number.isFinite(stats.min)) {
      previousFilter = stats.min;
    }
    var lastIndex = 0;
    metadataRule.buckets = filters.slice(range.start, range.end).map(function (filterRaw, index) {
      var bucket = {
        filter: {
          type: FILTER_TYPE.RANGE,
          start: previousFilter,
          end: filterRaw
        },
        value: values[index]
      };

      previousFilter = filterRaw;
      lastIndex = index;

      return bucket;
    });

    metadataRule.buckets.push({
      filter: {
        type: FILTER_TYPE.RANGE,
        start: previousFilter,
        end: stats.max
      },
      value: values[lastIndex + 1]
    });

    metadataHolder.add(metadataRule);
  }

  return this.processGeneric(initialDecl, column, defaultValue, values, filters, range, indexOffset);
};

RampResult.prototype.processLessThanOrEqual = function (column, decl, metadataHolder) {
  var values = this.values.get(this.filters.getLength());
  var filters = this.filters.get();

  var defaultValue = values[values.length - 1];
  var initialDecl = postcss.decl({ prop: decl.prop, value: defaultValue });
  decl.replaceWith(initialDecl);

  var range = {
    start: 0,
    end: filters.length - 1
  };
  var indexOffset = 1;

  if (metadataHolder) {
    var stats = defaultStats(this.filters.stats);
    var metadataRule = {
      selector: selector(initialDecl.parent),
      prop: initialDecl.prop,
      column: column,
      mapping: this.mapping,
      buckets: [],
      stats: {
        filter_avg: stats.avg
      }
    };

    var previousFilter = null;
    if (Number.isFinite(stats.min)) {
      previousFilter = stats.min;
    }
    var lastIndex = 0;
    metadataRule.buckets = filters.slice(range.start, range.end).map(function (filterRaw, index) {
      var bucket = {
        filter: {
          type: FILTER_TYPE.RANGE,
          start: previousFilter,
          end: filterRaw
        },
        value: values[index]
      };

      previousFilter = filterRaw;
      lastIndex = index;

      return bucket;
    });

    metadataRule.buckets.push({
      filter: {
        type: FILTER_TYPE.RANGE,
        start: previousFilter,
        end: stats.max
      },
      value: values[lastIndex + 1]
    });

    metadataHolder.add(metadataRule);
  }

  var reversedValues = values.concat().reverse();
  var reversedFilters = filters.concat().reverse();

  return this.processGeneric(initialDecl, column, defaultValue, reversedValues, reversedFilters, range, indexOffset);
};

// jshint maxparams:8
RampResult.prototype.processGeneric = function (decl, column, defaultValue, values, filters, range, indexOffset) {
  var previousNode = decl;
  filters.slice(range.start, range.end).forEach(function (filterRaw, index) {
    var filter = Number.isFinite(filterRaw) ? filterRaw : '"' + filterRaw + '"';
    var rule = postcss.rule({
      selector: '[ ' + column + ' ' + this.mapping + ' ' + filter + ' ]'
    });
    rule.append(postcss.decl({ prop: decl.prop, value: values[index + indexOffset] }));

    rule.moveAfter(previousNode);
    previousNode = rule;
  }.bind(this));

  return { values: values, filters: filters, mapping: this.mapping };
};

function defaultStats (stats) {
  stats = stats || {};
  return {
    min: stats.min_val,
    max: stats.max_val,
    avg: stats.avg_val
  };
}

function selector (node, repr) {
  repr = repr || '';
  if (node && node.type !== 'root') {
    repr = selector(node.parent, node.selector + repr);
  }
  return repr;
}

},{"../../helper/turbo-carto-error":152,"postcss":106}],159:[function(require,module,exports){
'use strict';

function ValuesResult (result, defaultSize, getter, maxSize) {
  this.result = result;
  this.defaultSize = defaultSize || result.length;
  this.getter = getter;
  this.maxSize = maxSize || result.length;
}

module.exports = ValuesResult;

ValuesResult.prototype.get = function (size) {
  size = size || this.defaultSize;
  if (this.getter) {
    return this.getter(this.result, size);
  }

  if (Array.isArray(this.result)) {
    if (size > 0) {
      return this.result.slice(0, size);
    }
    return this.result;
  }

  return this.result.hasOwnProperty(size) ? this.result[size] : this.result[this.defaultSize];
};

ValuesResult.prototype.getLength = function (size) {
  return this.get(size).length;
};

ValuesResult.prototype.getMaxSize = function () {
  return this.maxSize;
};

ValuesResult.prototype.toString = function () {
  return JSON.stringify({
    result: this.result,
    defaultSize: this.defaultSize,
    getter: this.getter && this.getter.toString()
  });
};

ValuesResult.prototype.is = function (constructor) {
  return this.constructor === constructor;
};

},{}],160:[function(require,module,exports){
'use strict';

require('es6-promise').polyfill();

var valueParser = require('postcss-value-parser');
var postcss = require('postcss');
var FnBuilder = require('./fn/builder');

function PostcssTurboCarto (datasource) {
  this.datasource = datasource;
}

module.exports = PostcssTurboCarto;

PostcssTurboCarto.prototype.getPlugin = function (metadataHolder) {
  var self = this;
  return postcss.plugin('turbo-carto', function (/* opts */) {
    return function (css /* , result */) {
      var fnBuilder = new FnBuilder(self.datasource);

      css.walkDecls(function (decl) {
        var parsedValue = valueParser(decl.value);
        parsedValue.walk(function (node) {
          if (node.type === 'function') {
            fnBuilder.add(decl, node, metadataHolder);
            return false;
          }
        }, false);
      });

      return fnBuilder.exec();
    };
  });
};

},{"./fn/builder":133,"es6-promise":82,"postcss":106,"postcss-value-parser":89}],161:[function(require,module,exports){
'use strict';

var postcss = require('postcss');
var PostcssTurboCarto = require('./postcss-turbo-carto');
var MetadataHolder = require('./model/metadata-holder');

function TurboCarto (cartocss, datasource) {
  this.cartocss = cartocss;
  this.datasource = datasource;
  this.metadataHolder = new MetadataHolder();
}

TurboCarto.prototype.getCartocss = function (callback) {
  var self = this;

  var postCssTurboCarto = new PostcssTurboCarto(this.datasource);

  postcss([postCssTurboCarto.getPlugin(this.metadataHolder)])
    .process(this.cartocss)
    .then(function (result) {
      callback(null, result.css, self.metadataHolder);
    })
    .catch(callback);
};

TurboCarto.prototype.getMetadata = function (callback) {
  return callback(null, this.metadataHolder);
};

module.exports = TurboCarto;

},{"./model/metadata-holder":157,"./postcss-turbo-carto":160,"postcss":106}],162:[function(require,module,exports){
var ss = require('simple-statistics');

/**
* Takes a {@FeatureCollection} of any type and returns an array of the [Jenks Natural breaks](http://en.wikipedia.org/wiki/Jenks_natural_breaks_optimization)
* for a given property
* @module turf/jenks
* @param {FeatureCollection} input a FeatureCollection of any type
* @param {string} field the property in `input` on which to calculate Jenks natural breaks
* @param {number} numberOfBreaks number of classes in which to group the data
* @return {Array<number>} the break number for each class plus the minimum and maximum values
* @example
* var points = {
*   "type": "FeatureCollection",
*   "features": [
*     {
*       "type": "Feature",
*       "properties": {
*         "population": 200
*       },
*       "geometry": {
*         "type": "Point",
*         "coordinates": [49.859733, 40.400424]
*       }
*     }, {
*       "type": "Feature",
*       "properties": {
*         "population": 600
*       },
*       "geometry": {
*         "type": "Point",
*         "coordinates": [49.83879, 40.401209]
*       }
*     }, {
*       "type": "Feature",
*       "properties": {
*         "population": 100
*       },
*       "geometry": {
*         "type": "Point",
*         "coordinates": [49.817848, 40.376889]
*       }
*     }, {
*       "type": "Feature",
*       "properties": {
*         "population": 200
*       },
*       "geometry": {
*         "type": "Point",
*         "coordinates": [49.840507, 40.386043]
*       }
*     }, {
*       "type": "Feature",
*       "properties": {
*         "population": 300
*       },
*       "geometry": {
*         "type": "Point",
*         "coordinates": [49.854583, 40.37532]
*       }
*     }
*   ]
* };
*
* var breaks = turf.jenks(points, 'population', 3);
*
* //=breaks
*/
module.exports = function(fc, field, num){
  var vals = [];
  var breaks = [];

  fc.features.forEach(function(feature){
    if(feature.properties[field]!==undefined){
      vals.push(feature.properties[field]);
    }
  });
  breaks = ss.jenks(vals, num);

  return breaks;
};

},{"simple-statistics":119}],163:[function(require,module,exports){
//     Underscore.js 1.8.3
//     http://underscorejs.org
//     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `exports` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var
    push             = ArrayProto.push,
    slice            = ArrayProto.slice,
    toString         = ObjProto.toString,
    hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind,
    nativeCreate       = Object.create;

  // Naked function reference for surrogate-prototype-swapping.
  var Ctor = function(){};

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.8.3';

  // Internal function that returns an efficient (for current engines) version
  // of the passed-in callback, to be repeatedly applied in other Underscore
  // functions.
  var optimizeCb = function(func, context, argCount) {
    if (context === void 0) return func;
    switch (argCount == null ? 3 : argCount) {
      case 1: return function(value) {
        return func.call(context, value);
      };
      case 2: return function(value, other) {
        return func.call(context, value, other);
      };
      case 3: return function(value, index, collection) {
        return func.call(context, value, index, collection);
      };
      case 4: return function(accumulator, value, index, collection) {
        return func.call(context, accumulator, value, index, collection);
      };
    }
    return function() {
      return func.apply(context, arguments);
    };
  };

  // A mostly-internal function to generate callbacks that can be applied
  // to each element in a collection, returning the desired result — either
  // identity, an arbitrary callback, a property matcher, or a property accessor.
  var cb = function(value, context, argCount) {
    if (value == null) return _.identity;
    if (_.isFunction(value)) return optimizeCb(value, context, argCount);
    if (_.isObject(value)) return _.matcher(value);
    return _.property(value);
  };
  _.iteratee = function(value, context) {
    return cb(value, context, Infinity);
  };

  // An internal function for creating assigner functions.
  var createAssigner = function(keysFunc, undefinedOnly) {
    return function(obj) {
      var length = arguments.length;
      if (length < 2 || obj == null) return obj;
      for (var index = 1; index < length; index++) {
        var source = arguments[index],
            keys = keysFunc(source),
            l = keys.length;
        for (var i = 0; i < l; i++) {
          var key = keys[i];
          if (!undefinedOnly || obj[key] === void 0) obj[key] = source[key];
        }
      }
      return obj;
    };
  };

  // An internal function for creating a new object that inherits from another.
  var baseCreate = function(prototype) {
    if (!_.isObject(prototype)) return {};
    if (nativeCreate) return nativeCreate(prototype);
    Ctor.prototype = prototype;
    var result = new Ctor;
    Ctor.prototype = null;
    return result;
  };

  var property = function(key) {
    return function(obj) {
      return obj == null ? void 0 : obj[key];
    };
  };

  // Helper for collection methods to determine whether a collection
  // should be iterated as an array or as an object
  // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
  var getLength = property('length');
  var isArrayLike = function(collection) {
    var length = getLength(collection);
    return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
  };

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles raw objects in addition to array-likes. Treats all
  // sparse array-likes as if they were dense.
  _.each = _.forEach = function(obj, iteratee, context) {
    iteratee = optimizeCb(iteratee, context);
    var i, length;
    if (isArrayLike(obj)) {
      for (i = 0, length = obj.length; i < length; i++) {
        iteratee(obj[i], i, obj);
      }
    } else {
      var keys = _.keys(obj);
      for (i = 0, length = keys.length; i < length; i++) {
        iteratee(obj[keys[i]], keys[i], obj);
      }
    }
    return obj;
  };

  // Return the results of applying the iteratee to each element.
  _.map = _.collect = function(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length,
        results = Array(length);
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      results[index] = iteratee(obj[currentKey], currentKey, obj);
    }
    return results;
  };

  // Create a reducing function iterating left or right.
  function createReduce(dir) {
    // Optimized iterator function as using arguments.length
    // in the main function will deoptimize the, see #1991.
    function iterator(obj, iteratee, memo, keys, index, length) {
      for (; index >= 0 && index < length; index += dir) {
        var currentKey = keys ? keys[index] : index;
        memo = iteratee(memo, obj[currentKey], currentKey, obj);
      }
      return memo;
    }

    return function(obj, iteratee, memo, context) {
      iteratee = optimizeCb(iteratee, context, 4);
      var keys = !isArrayLike(obj) && _.keys(obj),
          length = (keys || obj).length,
          index = dir > 0 ? 0 : length - 1;
      // Determine the initial value if none is provided.
      if (arguments.length < 3) {
        memo = obj[keys ? keys[index] : index];
        index += dir;
      }
      return iterator(obj, iteratee, memo, keys, index, length);
    };
  }

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`.
  _.reduce = _.foldl = _.inject = createReduce(1);

  // The right-associative version of reduce, also known as `foldr`.
  _.reduceRight = _.foldr = createReduce(-1);

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, predicate, context) {
    var key;
    if (isArrayLike(obj)) {
      key = _.findIndex(obj, predicate, context);
    } else {
      key = _.findKey(obj, predicate, context);
    }
    if (key !== void 0 && key !== -1) return obj[key];
  };

  // Return all the elements that pass a truth test.
  // Aliased as `select`.
  _.filter = _.select = function(obj, predicate, context) {
    var results = [];
    predicate = cb(predicate, context);
    _.each(obj, function(value, index, list) {
      if (predicate(value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, predicate, context) {
    return _.filter(obj, _.negate(cb(predicate)), context);
  };

  // Determine whether all of the elements match a truth test.
  // Aliased as `all`.
  _.every = _.all = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length;
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      if (!predicate(obj[currentKey], currentKey, obj)) return false;
    }
    return true;
  };

  // Determine if at least one element in the object matches a truth test.
  // Aliased as `any`.
  _.some = _.any = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length;
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      if (predicate(obj[currentKey], currentKey, obj)) return true;
    }
    return false;
  };

  // Determine if the array or object contains a given item (using `===`).
  // Aliased as `includes` and `include`.
  _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) {
    if (!isArrayLike(obj)) obj = _.values(obj);
    if (typeof fromIndex != 'number' || guard) fromIndex = 0;
    return _.indexOf(obj, item, fromIndex) >= 0;
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    var isFunc = _.isFunction(method);
    return _.map(obj, function(value) {
      var func = isFunc ? method : value[method];
      return func == null ? func : func.apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, _.property(key));
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs) {
    return _.filter(obj, _.matcher(attrs));
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.find(obj, _.matcher(attrs));
  };

  // Return the maximum element (or element-based computation).
  _.max = function(obj, iteratee, context) {
    var result = -Infinity, lastComputed = -Infinity,
        value, computed;
    if (iteratee == null && obj != null) {
      obj = isArrayLike(obj) ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value > result) {
          result = value;
        }
      }
    } else {
      iteratee = cb(iteratee, context);
      _.each(obj, function(value, index, list) {
        computed = iteratee(value, index, list);
        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
          result = value;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iteratee, context) {
    var result = Infinity, lastComputed = Infinity,
        value, computed;
    if (iteratee == null && obj != null) {
      obj = isArrayLike(obj) ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value < result) {
          result = value;
        }
      }
    } else {
      iteratee = cb(iteratee, context);
      _.each(obj, function(value, index, list) {
        computed = iteratee(value, index, list);
        if (computed < lastComputed || computed === Infinity && result === Infinity) {
          result = value;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Shuffle a collection, using the modern version of the
  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
  _.shuffle = function(obj) {
    var set = isArrayLike(obj) ? obj : _.values(obj);
    var length = set.length;
    var shuffled = Array(length);
    for (var index = 0, rand; index < length; index++) {
      rand = _.random(0, index);
      if (rand !== index) shuffled[index] = shuffled[rand];
      shuffled[rand] = set[index];
    }
    return shuffled;
  };

  // Sample **n** random values from a collection.
  // If **n** is not specified, returns a single random element.
  // The internal `guard` argument allows it to work with `map`.
  _.sample = function(obj, n, guard) {
    if (n == null || guard) {
      if (!isArrayLike(obj)) obj = _.values(obj);
      return obj[_.random(obj.length - 1)];
    }
    return _.shuffle(obj).slice(0, Math.max(0, n));
  };

  // Sort the object's values by a criterion produced by an iteratee.
  _.sortBy = function(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value: value,
        index: index,
        criteria: iteratee(value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index - right.index;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(behavior) {
    return function(obj, iteratee, context) {
      var result = {};
      iteratee = cb(iteratee, context);
      _.each(obj, function(value, index) {
        var key = iteratee(value, index, obj);
        behavior(result, value, key);
      });
      return result;
    };
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = group(function(result, value, key) {
    if (_.has(result, key)) result[key].push(value); else result[key] = [value];
  });

  // Indexes the object's values by a criterion, similar to `groupBy`, but for
  // when you know that your index values will be unique.
  _.indexBy = group(function(result, value, key) {
    result[key] = value;
  });

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = group(function(result, value, key) {
    if (_.has(result, key)) result[key]++; else result[key] = 1;
  });

  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (isArrayLike(obj)) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return isArrayLike(obj) ? obj.length : _.keys(obj).length;
  };

  // Split a collection into two arrays: one whose elements all satisfy the given
  // predicate, and one whose elements all do not satisfy the predicate.
  _.partition = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var pass = [], fail = [];
    _.each(obj, function(value, key, obj) {
      (predicate(value, key, obj) ? pass : fail).push(value);
    });
    return [pass, fail];
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null) return void 0;
    if (n == null || guard) return array[0];
    return _.initial(array, array.length - n);
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array.
  _.last = function(array, n, guard) {
    if (array == null) return void 0;
    if (n == null || guard) return array[array.length - 1];
    return _.rest(array, Math.max(0, array.length - n));
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, n == null || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, _.identity);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, strict, startIndex) {
    var output = [], idx = 0;
    for (var i = startIndex || 0, length = getLength(input); i < length; i++) {
      var value = input[i];
      if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
        //flatten current level of array or arguments object
        if (!shallow) value = flatten(value, shallow, strict);
        var j = 0, len = value.length;
        output.length += len;
        while (j < len) {
          output[idx++] = value[j++];
        }
      } else if (!strict) {
        output[idx++] = value;
      }
    }
    return output;
  };

  // Flatten out an array, either recursively (by default), or just one level.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, false);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
    if (!_.isBoolean(isSorted)) {
      context = iteratee;
      iteratee = isSorted;
      isSorted = false;
    }
    if (iteratee != null) iteratee = cb(iteratee, context);
    var result = [];
    var seen = [];
    for (var i = 0, length = getLength(array); i < length; i++) {
      var value = array[i],
          computed = iteratee ? iteratee(value, i, array) : value;
      if (isSorted) {
        if (!i || seen !== computed) result.push(value);
        seen = computed;
      } else if (iteratee) {
        if (!_.contains(seen, computed)) {
          seen.push(computed);
          result.push(value);
        }
      } else if (!_.contains(result, value)) {
        result.push(value);
      }
    }
    return result;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(flatten(arguments, true, true));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    var result = [];
    var argsLength = arguments.length;
    for (var i = 0, length = getLength(array); i < length; i++) {
      var item = array[i];
      if (_.contains(result, item)) continue;
      for (var j = 1; j < argsLength; j++) {
        if (!_.contains(arguments[j], item)) break;
      }
      if (j === argsLength) result.push(item);
    }
    return result;
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = flatten(arguments, true, true, 1);
    return _.filter(array, function(value){
      return !_.contains(rest, value);
    });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    return _.unzip(arguments);
  };

  // Complement of _.zip. Unzip accepts an array of arrays and groups
  // each array's elements on shared indices
  _.unzip = function(array) {
    var length = array && _.max(array, getLength).length || 0;
    var result = Array(length);

    for (var index = 0; index < length; index++) {
      result[index] = _.pluck(array, index);
    }
    return result;
  };

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values.
  _.object = function(list, values) {
    var result = {};
    for (var i = 0, length = getLength(list); i < length; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // Generator function to create the findIndex and findLastIndex functions
  function createPredicateIndexFinder(dir) {
    return function(array, predicate, context) {
      predicate = cb(predicate, context);
      var length = getLength(array);
      var index = dir > 0 ? 0 : length - 1;
      for (; index >= 0 && index < length; index += dir) {
        if (predicate(array[index], index, array)) return index;
      }
      return -1;
    };
  }

  // Returns the first index on an array-like that passes a predicate test
  _.findIndex = createPredicateIndexFinder(1);
  _.findLastIndex = createPredicateIndexFinder(-1);

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iteratee, context) {
    iteratee = cb(iteratee, context, 1);
    var value = iteratee(obj);
    var low = 0, high = getLength(array);
    while (low < high) {
      var mid = Math.floor((low + high) / 2);
      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
    }
    return low;
  };

  // Generator function to create the indexOf and lastIndexOf functions
  function createIndexFinder(dir, predicateFind, sortedIndex) {
    return function(array, item, idx) {
      var i = 0, length = getLength(array);
      if (typeof idx == 'number') {
        if (dir > 0) {
            i = idx >= 0 ? idx : Math.max(idx + length, i);
        } else {
            length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
        }
      } else if (sortedIndex && idx && length) {
        idx = sortedIndex(array, item);
        return array[idx] === item ? idx : -1;
      }
      if (item !== item) {
        idx = predicateFind(slice.call(array, i, length), _.isNaN);
        return idx >= 0 ? idx + i : -1;
      }
      for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
        if (array[idx] === item) return idx;
      }
      return -1;
    };
  }

  // Return the position of the first occurrence of an item in an array,
  // or -1 if the item is not included in the array.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex);
  _.lastIndexOf = createIndexFinder(-1, _.findLastIndex);

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (stop == null) {
      stop = start || 0;
      start = 0;
    }
    step = step || 1;

    var length = Math.max(Math.ceil((stop - start) / step), 0);
    var range = Array(length);

    for (var idx = 0; idx < length; idx++, start += step) {
      range[idx] = start;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Determines whether to execute a function as a constructor
  // or a normal function with the provided arguments
  var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
    var self = baseCreate(sourceFunc.prototype);
    var result = sourceFunc.apply(self, args);
    if (_.isObject(result)) return result;
    return self;
  };

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = function(func, context) {
    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
    var args = slice.call(arguments, 2);
    var bound = function() {
      return executeBound(func, bound, context, this, args.concat(slice.call(arguments)));
    };
    return bound;
  };

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. _ acts
  // as a placeholder, allowing any combination of arguments to be pre-filled.
  _.partial = function(func) {
    var boundArgs = slice.call(arguments, 1);
    var bound = function() {
      var position = 0, length = boundArgs.length;
      var args = Array(length);
      for (var i = 0; i < length; i++) {
        args[i] = boundArgs[i] === _ ? arguments[position++] : boundArgs[i];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return executeBound(func, bound, this, this, args);
    };
    return bound;
  };

  // Bind a number of an object's methods to that object. Remaining arguments
  // are the method names to be bound. Useful for ensuring that all callbacks
  // defined on an object belong to it.
  _.bindAll = function(obj) {
    var i, length = arguments.length, key;
    if (length <= 1) throw new Error('bindAll must be passed function names');
    for (i = 1; i < length; i++) {
      key = arguments[i];
      obj[key] = _.bind(obj[key], obj);
    }
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memoize = function(key) {
      var cache = memoize.cache;
      var address = '' + (hasher ? hasher.apply(this, arguments) : key);
      if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
      return cache[address];
    };
    memoize.cache = {};
    return memoize;
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){
      return func.apply(null, args);
    }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = _.partial(_.delay, _, 1);

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var context, args, result;
    var timeout = null;
    var previous = 0;
    if (!options) options = {};
    var later = function() {
      previous = options.leading === false ? 0 : _.now();
      timeout = null;
      result = func.apply(context, args);
      if (!timeout) context = args = null;
    };
    return function() {
      var now = _.now();
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0 || remaining > wait) {
        if (timeout) {
          clearTimeout(timeout);
          timeout = null;
        }
        previous = now;
        result = func.apply(context, args);
        if (!timeout) context = args = null;
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout, args, context, timestamp, result;

    var later = function() {
      var last = _.now() - timestamp;

      if (last < wait && last >= 0) {
        timeout = setTimeout(later, wait - last);
      } else {
        timeout = null;
        if (!immediate) {
          result = func.apply(context, args);
          if (!timeout) context = args = null;
        }
      }
    };

    return function() {
      context = this;
      args = arguments;
      timestamp = _.now();
      var callNow = immediate && !timeout;
      if (!timeout) timeout = setTimeout(later, wait);
      if (callNow) {
        result = func.apply(context, args);
        context = args = null;
      }

      return result;
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return _.partial(wrapper, func);
  };

  // Returns a negated version of the passed-in predicate.
  _.negate = function(predicate) {
    return function() {
      return !predicate.apply(this, arguments);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var args = arguments;
    var start = args.length - 1;
    return function() {
      var i = start;
      var result = args[start].apply(this, arguments);
      while (i--) result = args[i].call(this, result);
      return result;
    };
  };

  // Returns a function that will only be executed on and after the Nth call.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Returns a function that will only be executed up to (but not including) the Nth call.
  _.before = function(times, func) {
    var memo;
    return function() {
      if (--times > 0) {
        memo = func.apply(this, arguments);
      }
      if (times <= 1) func = null;
      return memo;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = _.partial(_.before, 2);

  // Object Functions
  // ----------------

  // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
                      'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];

  function collectNonEnumProps(obj, keys) {
    var nonEnumIdx = nonEnumerableProps.length;
    var constructor = obj.constructor;
    var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto;

    // Constructor is a special case.
    var prop = 'constructor';
    if (_.has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);

    while (nonEnumIdx--) {
      prop = nonEnumerableProps[nonEnumIdx];
      if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
        keys.push(prop);
      }
    }
  }

  // Retrieve the names of an object's own properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = function(obj) {
    if (!_.isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  };

  // Retrieve all the property names of an object.
  _.allKeys = function(obj) {
    if (!_.isObject(obj)) return [];
    var keys = [];
    for (var key in obj) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var values = Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[keys[i]];
    }
    return values;
  };

  // Returns the results of applying the iteratee to each element of the object
  // In contrast to _.map it returns an object
  _.mapObject = function(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    var keys =  _.keys(obj),
          length = keys.length,
          results = {},
          currentKey;
      for (var index = 0; index < length; index++) {
        currentKey = keys[index];
        results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
      }
      return results;
  };

  // Convert an object into a list of `[key, value]` pairs.
  _.pairs = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var pairs = Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [keys[i], obj[keys[i]]];
    }
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    var keys = _.keys(obj);
    for (var i = 0, length = keys.length; i < length; i++) {
      result[obj[keys[i]]] = keys[i];
    }
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = createAssigner(_.allKeys);

  // Assigns a given object with all the own properties in the passed-in object(s)
  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
  _.extendOwn = _.assign = createAssigner(_.keys);

  // Returns the first key on an object that passes a predicate test
  _.findKey = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = _.keys(obj), key;
    for (var i = 0, length = keys.length; i < length; i++) {
      key = keys[i];
      if (predicate(obj[key], key, obj)) return key;
    }
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = function(object, oiteratee, context) {
    var result = {}, obj = object, iteratee, keys;
    if (obj == null) return result;
    if (_.isFunction(oiteratee)) {
      keys = _.allKeys(obj);
      iteratee = optimizeCb(oiteratee, context);
    } else {
      keys = flatten(arguments, false, false, 1);
      iteratee = function(value, key, obj) { return key in obj; };
      obj = Object(obj);
    }
    for (var i = 0, length = keys.length; i < length; i++) {
      var key = keys[i];
      var value = obj[key];
      if (iteratee(value, key, obj)) result[key] = value;
    }
    return result;
  };

   // Return a copy of the object without the blacklisted properties.
  _.omit = function(obj, iteratee, context) {
    if (_.isFunction(iteratee)) {
      iteratee = _.negate(iteratee);
    } else {
      var keys = _.map(flatten(arguments, false, false, 1), String);
      iteratee = function(value, key) {
        return !_.contains(keys, key);
      };
    }
    return _.pick(obj, iteratee, context);
  };

  // Fill in a given object with default properties.
  _.defaults = createAssigner(_.allKeys, true);

  // Creates an object that inherits from the given prototype object.
  // If additional properties are provided then they will be added to the
  // created object.
  _.create = function(prototype, props) {
    var result = baseCreate(prototype);
    if (props) _.extendOwn(result, props);
    return result;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Returns whether an object has a given set of `key:value` pairs.
  _.isMatch = function(object, attrs) {
    var keys = _.keys(attrs), length = keys.length;
    if (object == null) return !length;
    var obj = Object(object);
    for (var i = 0; i < length; i++) {
      var key = keys[i];
      if (attrs[key] !== obj[key] || !(key in obj)) return false;
    }
    return true;
  };


  // Internal recursive comparison function for `isEqual`.
  var eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a === 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className !== toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
      case '[object RegExp]':
      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return '' + a === '' + b;
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive.
        // Object(NaN) is equivalent to NaN
        if (+a !== +a) return +b !== +b;
        // An `egal` comparison is performed for other numeric values.
        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a === +b;
    }

    var areArrays = className === '[object Array]';
    if (!areArrays) {
      if (typeof a != 'object' || typeof b != 'object') return false;

      // Objects with different constructors are not equivalent, but `Object`s or `Array`s
      // from different frames are.
      var aCtor = a.constructor, bCtor = b.constructor;
      if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
                               _.isFunction(bCtor) && bCtor instanceof bCtor)
                          && ('constructor' in a && 'constructor' in b)) {
        return false;
      }
    }
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.

    // Initializing stack of traversed objects.
    // It's done here since we only need them for objects and arrays comparison.
    aStack = aStack || [];
    bStack = bStack || [];
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] === a) return bStack[length] === b;
    }

    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);

    // Recursively compare objects and arrays.
    if (areArrays) {
      // Compare array lengths to determine if a deep comparison is necessary.
      length = a.length;
      if (length !== b.length) return false;
      // Deep compare the contents, ignoring non-numeric properties.
      while (length--) {
        if (!eq(a[length], b[length], aStack, bStack)) return false;
      }
    } else {
      // Deep compare objects.
      var keys = _.keys(a), key;
      length = keys.length;
      // Ensure that both objects contain the same number of properties before comparing deep equality.
      if (_.keys(b).length !== length) return false;
      while (length--) {
        // Deep compare each member
        key = keys[length];
        if (!(_.has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return true;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
    return _.keys(obj).length === 0;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) === '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    var type = typeof obj;
    return type === 'function' || type === 'object' && !!obj;
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError.
  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) === '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE < 9), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return _.has(obj, 'callee');
    };
  }

  // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
  // IE 11 (#1621), and in Safari 8 (#1929).
  if (typeof /./ != 'function' && typeof Int8Array != 'object') {
    _.isFunction = function(obj) {
      return typeof obj == 'function' || false;
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
  _.isNaN = function(obj) {
    return _.isNumber(obj) && obj !== +obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, key) {
    return obj != null && hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iteratees.
  _.identity = function(value) {
    return value;
  };

  // Predicate-generating functions. Often useful outside of Underscore.
  _.constant = function(value) {
    return function() {
      return value;
    };
  };

  _.noop = function(){};

  _.property = property;

  // Generates a function for a given object that returns a given property.
  _.propertyOf = function(obj) {
    return obj == null ? function(){} : function(key) {
      return obj[key];
    };
  };

  // Returns a predicate for checking whether an object has a given set of
  // `key:value` pairs.
  _.matcher = _.matches = function(attrs) {
    attrs = _.extendOwn({}, attrs);
    return function(obj) {
      return _.isMatch(obj, attrs);
    };
  };

  // Run a function **n** times.
  _.times = function(n, iteratee, context) {
    var accum = Array(Math.max(0, n));
    iteratee = optimizeCb(iteratee, context, 1);
    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // A (possibly faster) way to get the current timestamp as an integer.
  _.now = Date.now || function() {
    return new Date().getTime();
  };

   // List of HTML entities for escaping.
  var escapeMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;'
  };
  var unescapeMap = _.invert(escapeMap);

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  var createEscaper = function(map) {
    var escaper = function(match) {
      return map[match];
    };
    // Regexes for identifying a key that needs to be escaped
    var source = '(?:' + _.keys(map).join('|') + ')';
    var testRegexp = RegExp(source);
    var replaceRegexp = RegExp(source, 'g');
    return function(string) {
      string = string == null ? '' : '' + string;
      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
    };
  };
  _.escape = createEscaper(escapeMap);
  _.unescape = createEscaper(unescapeMap);

  // If the value of the named `property` is a function then invoke it with the
  // `object` as context; otherwise, return it.
  _.result = function(object, property, fallback) {
    var value = object == null ? void 0 : object[property];
    if (value === void 0) {
      value = fallback;
    }
    return _.isFunction(value) ? value.call(object) : value;
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'":      "'",
    '\\':     '\\',
    '\r':     'r',
    '\n':     'n',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escaper = /\\|'|\r|\n|\u2028|\u2029/g;

  var escapeChar = function(match) {
    return '\\' + escapes[match];
  };

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  // NB: `oldSettings` only exists for backwards compatibility.
  _.template = function(text, settings, oldSettings) {
    if (!settings && oldSettings) settings = oldSettings;
    settings = _.defaults({}, settings, _.templateSettings);

    // Combine delimiters into one regular expression via alternation.
    var matcher = RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

    // Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset).replace(escaper, escapeChar);
      index = offset + match.length;

      if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      } else if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      } else if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }

      // Adobe VMs need the match returned to produce the correct offest.
      return match;
    });
    source += "';\n";

    // If a variable is not specified, place data values in local scope.
    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

    source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + 'return __p;\n';

    try {
      var render = new Function(settings.variable || 'obj', '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled source as a convenience for precompilation.
    var argument = settings.variable || 'obj';
    template.source = 'function(' + argument + '){\n' + source + '}';

    return template;
  };

  // Add a "chain" function. Start chaining a wrapped Underscore object.
  _.chain = function(obj) {
    var instance = _(obj);
    instance._chain = true;
    return instance;
  };

  // OOP
  // ---------------
  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.

  // Helper function to continue chaining intermediate results.
  var result = function(instance, obj) {
    return instance._chain ? _(obj).chain() : obj;
  };

  // Add your own custom functions to the Underscore object.
  _.mixin = function(obj) {
    _.each(_.functions(obj), function(name) {
      var func = _[name] = obj[name];
      _.prototype[name] = function() {
        var args = [this._wrapped];
        push.apply(args, arguments);
        return result(this, func.apply(_, args));
      };
    });
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      var obj = this._wrapped;
      method.apply(obj, arguments);
      if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
      return result(this, obj);
    };
  });

  // Add all accessor Array functions to the wrapper.
  _.each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      return result(this, method.apply(this._wrapped, arguments));
    };
  });

  // Extracts the result from a wrapped and chained object.
  _.prototype.value = function() {
    return this._wrapped;
  };

  // Provide unwrapping proxy for some methods used in engine operations
  // such as arithmetic and JSON stringification.
  _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;

  _.prototype.toString = function() {
    return '' + this._wrapped;
  };

  // AMD registration happens at the end for compatibility with AMD loaders
  // that may not enforce next-turn semantics on modules. Even though general
  // practice for AMD registration is to be anonymous, underscore registers
  // as a named module because, like jQuery, it is a base library that is
  // popular enough to be bundled in a third party lib, but not be part of
  // an AMD load request. Those cases could generate an error when an
  // anonymous define() is called outside of a loader request.
  if (typeof define === 'function' && define.amd) {
    define('underscore', [], function() {
      return _;
    });
  }
}.call(this));

},{}],164:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],165:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],166:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":165,"_process":118,"inherits":164}]},{},[11])(11)
});