Overview 
Tobias Koppers’ source map visualization is a great tool for inspecting source maps, both for source map consumers trying to set up their build tool correctly, as well as for developers of source map producing compilers. However, uploading the generated file, the source map and all the source files is tedious. source-map-visualize simplifies that. Just type:
$ source-map-visualize fixtures/example.js... and the visualizer will be opened in your default browser with all the files
pre-loaded! (fixture/example.js exists in this repository, so you could try
that straight away!)
Installation
$ npm install -g source-map-visualize