Sourcemapper is a bit of golang to parse a sourcemap, as generated by webpack or similar, and spit out the original JavaScript files.
Use this tool only on systems you own or have explicit permission to test.
Sourcemapper is a bit of golang to parse a sourcemap, as generated by webpack or similar, and spit out the original JavaScript files, recreating the source tree based on the file paths in the sourcemap.
An article explaining its purpose is available here:
https://pulsesecurity.co.nz/articles/javascript-from-sourcemaps