cartodb/node-source-map-support
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fix column numbers

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This commit is contained in:
Evan Wallace 2014-04-26 11:15:38 -07:00
parent e7b02406fd
commit 4afea4855d
2 changed files with 17 additions and 19 deletions
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2
README.md
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@ -76,7 +76,7 @@ compiled.js.map:
"file": "compiled.js",
"sources": ["original.js"],
"names": [],
"mappings": ";;;AAAA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC"
"mappings": ";;;AAAA,MAAM,IAAI"
}
Run compiled.js using node (notice how the stack trace uses original.js instead of compiled.js):

34
source-map-support.js
View File

@ -154,13 +154,13 @@ function wrapCallSite(frame) {
var position = mapSourcePosition({
source: source,
line: frame.getLineNumber(),
column: frame.getColumnNumber()
column: frame.getColumnNumber() - 1
});
return {
__proto__: frame,
getFileName: function() { return position.source; },
getLineNumber: function() { return position.line; },
getColumnNumber: function() { return position.column; },
getColumnNumber: function() { return position.column + 1; },
getScriptNameOrSourceURL: function() { return position.source; }
};
}
@ -192,25 +192,23 @@ function prepareStackTrace(error, stack) {
}
// Mimic node's stack trace printing when an exception escapes the process
function handleUncaughtExceptions(error) {
function handleUncaughtException(error) {
if (!error || !error.stack) {
console.log('Uncaught exception:', error);
process.exit();
}
var match = /\n at [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
if (match) {
var position = mapSourcePosition({
source: match[1],
line: match[2],
column: match[3]
});
if (fs.existsSync(position.source)) {
var contents = fs.readFileSync(position.source, 'utf8');
var line = contents.split(/(?:\r\n|\r|\n)/)[position.line - 1];
if (line) {
console.log('\n' + position.source + ':' + position.line);
console.log(line);
console.log(new Array(+position.column).join(' ') + '^');
var source = match[1];
var line = +match[2];
var column = +match[3];
if (fs.existsSync(source)) {
var contents = fs.readFileSync(source, 'utf8');
var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
if (code) {
console.log('\n' + source + ':' + line);
console.log(code);
console.log(new Array(column).join(' ') + '^');
}
}
}
@ -225,8 +223,8 @@ exports.install = function(options) {
// Configure options
options = options || {};
var installHandler = 'handleUncaughtExceptions' in options ?
options.handleUncaughtExceptions : true;
var installHandler = 'handleUncaughtException' in options ?
options.handleUncaughtException : true;
emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
options.emptyCacheBetweenOperations : false;
@ -243,7 +241,7 @@ exports.install = function(options) {
// generated JavaScript code will be shown above the stack trace instead of
// the original source code.
if (installHandler && !isInBrowser()) {
process.on('uncaughtException', handleUncaughtExceptions);
process.on('uncaughtException', handleUncaughtException);
}
}
};