lib/bro.js
function extractSourceMap(bundleContents) {
  var start = bundleContents.lastIndexOf('//# sourceMappingURL');
  var sourceMapComment = start !== -1 ? bundleContents.substring(start) : '';

  return sourceMapComment && convert.fromComment(sourceMapComment);
}
function extractSourceMap(bundleContents) {
  var start = bundleContents.lastIndexOf('//# sourceMappingURL');
  var sourceMapComment = start !== -1 ? bundleContents.substring(start) : '';

  return sourceMapComment && convert.fromComment(sourceMapComment);
}
function extractSourceMap ( bundleContents ) { var start = bundleContents . lastIndexOf ( '//# sourceMappingURL' ) ; var sourceMapComment = start !== - 1 ? bundleContents . substring ( start ) : '' ; return sourceMapComment && convert . fromComment ( sourceMapComment ) ; }
Extract the source map from the given bundle contents

@param {String} source
@return {SourceMap} if it could be parsed
Extract the source map from the given bundle contents