30  * The version of the source mapping spec that we are consuming.
35 // parsed mapping coordinates from the source map's "mappings" attribute. They
38 // and create these arrays once queried for a source location. We jump through
47 //       source: The path to the original source file that generated this
49 //       originalLine: The line number in the original source that
51 //       originalColumn: The column number in the original source that
113  * Iterate over each mapping between an original source/line/column and a
114  * generated line/column in this source map.
125  *        order or the original's source/line/column order, respectively. Defaults to
147       var source = mapping.source === null ? null : this._sources.at(mapping.source);
148       source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
150         source: source,
161  * Returns all generated line and column information for the original source,
170  *   - source: The filename of the original source.
171  *   - line: The line number in the original source.  The line number is 1-based.
172  *   - column: Optional. the column number in the original source.
177  *   - line: The line number in the generated source, or null.  The
179  *   - column: The column number in the generated source, or null.
191       source: util.getArg(aArgs, 'source'),  property
196     needle.source = this._findSourceIndex(needle.source);
197     if (needle.source < 0) {
255  * A BasicSourceMapConsumer instance represents a parsed source map which we can
257  * position in the generated source.
259  * The first parameter is the raw source map (either as a JSON string, or
260  * already parsed to an object). According to the spec, source maps have the
263  *   - version: Which version of the source map spec this map is following.
264  *   - sources: An array of URLs to the original source files.
267  *   - sourcesContent: Optional. An array of contents of the original source files.
269  *   - file: Optional. The generated file this source map is associated with.
271  * Here is an example source map, taken from the source map spec[0]:
283  * at which the source map was found.  This URL is used to compute the
316     // Some source maps produce relative source paths like "./foo.js" instead of
321     // the source root, if the source root is absolute. Not doing this would
322     // be particularly problematic when the source root is a prefix of the
323     // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
324     .map(function (source) {  argument
325       return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
326         ? util.relative(sourceRoot, source)
327         : source;
330   // Pass `true` below to allow duplicate names and sources. While source maps
332   // sometimes generates source maps with duplicates in them. See Github issue
352  * Utility function to find the index of a source.  Returns -1 if not
381  *        The source map that will be consumed.
383  *        The URL at which the source map can be found (optional)
416       if (srcMapping.source) {
417         destMapping.source = sources.indexOf(srcMapping.source);
437  * The version of the source mapping spec that we are consuming.
456   this.source = null;
521             throw new Error('Found a source, but no line and column');
525             throw new Error('Found a source and line, but no column');
536           // Original source.
537           mapping.source = previousSource + segment[1];
623  * Returns the original source, line, and column information for the generated
624  * source's line and column positions provided. The only argument is an object
627  *   - line: The line number in the generated source.  The line number
629  *   - column: The column number in the generated source.  The column
639  *   - source: The original source file, or null.
640  *   - line: The line number in the original source, or null.  The
642  *   - column: The column number in the original source, or null.  The
666         var source = util.getArg(mapping, 'source', null);
667         if (source !== null) {
668           source = this._sources.at(source);
669           source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
676           source: source,
685       source: null,
693  * Return true if we have the source content for every source in the source
706  * Returns the original source content. The only argument is the url of the
707  * original source file. Returns null if no original source content is
747     // don't want to throw if we can't find the source - we just want to
758  * Returns the generated line and column information for the original source,
762  *   - source: The filename of the original source.
763  *   - line: The line number in the original source.  The line number
765  *   - column: The column number in the original source.  The column
775  *   - line: The line number in the generated source, or null.  The
777  *   - column: The column number in the generated source, or null.
782     var source = util.getArg(aArgs, 'source');
783     source = this._findSourceIndex(source);
784     if (source < 0) {
793       source: source,  property
810       if (mapping.source === needle.source) {
829  * An IndexedSourceMapConsumer instance represents a parsed source map which
831  * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
834  * The first parameter is a raw source map (either as a JSON string, or already
835  * parsed to an object). According to the spec for indexed source maps, they
838  *   - version: Which version of the source map spec this map is following.
839  *   - file: Optional. The generated file this source map is associated with.
846  *   - map: A source map definition. This source map could also be indexed,
850  * specifying a URL to retrieve a source map from, but that's currently
853  * Here's an example source map, taken from the source map spec[0], but
872  * at which the source map was found.  This URL is used to compute the
900       // See https://github.com/mozilla/source-map/issues/16
929  * The version of the source mapping spec that we are consuming.
949  * Returns the original source, line, and column information for the generated
950  * source's line and column positions provided. The only argument is an object
953  *   - line: The line number in the generated source.  The line number
955  *   - column: The column number in the generated source.  The column
960  *   - source: The original source file, or null.
961  *   - line: The line number in the original source, or null.  The
963  *   - column: The column number in the original source, or null.  The
990         source: null,
1009  * Return true if we have the source content for every source in the source
1020  * Returns the original source content. The only argument is the url of the
1021  * original source file. Returns null if no original source content is
1043  * Returns the generated line and column information for the original source,
1047  *   - source: The filename of the original source.
1048  *   - line: The line number in the original source.  The line number
1050  *   - column: The column number in the original source.  The column
1055  *   - line: The line number in the generated source, or null.  The
1057  *   - column: The column number in the generated source, or null.
1065       // Only consider this section if the requested source is in the list of
1067       if (section.consumer._findSourceIndex(util.getArg(aArgs, 'source')) === -1) {
1105         var source = section.consumer._sources.at(mapping.source);
1106         source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
1107         this._sources.add(source);
1108         source = this._sources.indexOf(source);
1122           source: source,  property