node-source-map 0.7.0++dfsg2+really.0.6.1-4 (amd64 binary) in ubuntu eoan

 Mozilla implementation of source map generator and consumer, for source
 maps written in the Asynchronous Module Definition format.
 .
 Source maps provide a language-agnostic way to compile back production
 code to the original source code.
 .
 Node.js is an event-based server-side JavaScript engine.