Support numbers for '=~' operator

lib/carto/tree/filterset.js

@@ -93,7 +93,7 @@ tree.Filterset.prototype.toJS = function(env) {
     }
     var attrs = "data";
     if (op === '=~') {
-      return "(typeof " + attrs + "['" + filter.key.value  + "'] === 'string') && " + attrs + "['" + filter.key.value  + "'].match(" + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val) + ")";
+      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(' && ');

test/rendering_js.test.js

@@ -196,10 +196,10 @@ describe('RenderingJS', function() {
       var value = layer.shader['marker-width'].style({ name: 'wadus' }, { zoom: 1 });
     });
   });
- 
-  it("should not throw `TypeError` if left operand is not a `string` with operator `=~`", function(){
+  
+  it("`=~` operator should support numbers", function(){
     var css = [
-      '#layer[name=~".*wadus*"] {',
+      '#layer[value=~"^10"] {',
       '  marker-width: 14;',
       '}'
     ].join('\n');
@@ -207,10 +207,7 @@ describe('RenderingJS', function() {
     assert.doesNotThrow(function () {
       var shader = (new carto.RendererJS({})).render(css);
       var layer = shader.getLayers()[0];
-      var value = layer.shader['marker-width'].style({ name: 1 }, { zoom: 1 });
-      value = layer.shader['marker-width'].style({ name: null }, { zoom: 1 });
-      value = layer.shader['marker-width'].style({ name: undefined }, { zoom: 1 });
-      value = layer.shader['marker-width'].style({ name: true }, { zoom: 1 });
-    });
+      var value = layer.shader['marker-width'].style({ value: 10 }, { zoom: 1 });
+    }, Error);
   });
 });