srcify

Downloads source maps as specified in a JavaScript file and identifies unminified lines of code at given line and column.

For example:

var lookup = {
	url: "http://localhost/projects/srcify/test/dist/scrifytest.min.js",
	line: 8,
	column: 7
};

//	Grab the src
getsrc(lookup, function(error, code){
	if(code && ! error) {
		console.log(code);
	} else {
		console.log('Something went wrong whilst trying to fetch the code.', error);
	}
});

By default you get the 3 lines before and 4 lines after the error line, here is the code output from above:

[ { line: 14604, code: '\t\t}', errorLine: false },
  { line: 14605, code: '', errorLine: false },
  { line: 14606, code: '\t\tvar iFormat,', errorLine: false },
  { line: 14607,
    code: '\t\t\tdayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort,',
    errorLine: true },
  { line: 14608,
    code: '\t\t\tdayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames,',
    errorLine: false },
  { line: 14609,
    code: '\t\t\tmonthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort,',
    errorLine: false },
  { line: 14610,
    code: '\t\t\tmonthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames,',
    errorLine: false },
  { line: 14611,
    code: '\t\t\t// Check whether a format character is doubled',
    errorLine: false } ]

So for each object you have:

{ 
	line: What line it happened on
	code: The code that caused the error
	errorLine: true if this is the line the error occued on
}

In this example, the error was on line 14607, as errorLine is true.

Options

• srcMapKey (String) - What to search for to get the source map url, default: "sourceMappingURL"
• srcMapCommentStart (String) - Start of source map comment, default: "//#"
• linesBefore (Number) - How many lines before the error to show, default: 3
• linesAfter (Number) - How many lines after the error (including error line), default: 5