evanw/node-source-map-support — pull request #4 by floridoo (2013-03-18 22:49:20+00:00)
Title: Resolve sources relative to the source map

From Source Map Revision 3: Resolving Sources
> If the sources are not absolute URLs after prepending of the
> “sourceRoot”, the sources are resolved relative to the SourceMap (like
> resolving script src in a html document).