source_map

https://github.com/ConradIrwin/ruby-source_map

Ruby support for Source Maps allows you to interact with Source Maps in Ruby. This lets you do things like concatenate different javascript files and still debug them as though they were separate files. See the spec for more information: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit