Can I re-construct the original JavaScript source file from a minified version and the corresponding source-map file?

Question

I am working on a project where I have to statically analyse JavaScript code. However, for a few libraries, I only have access to a minified version of the file and the corresponding source-map. Is there a method/technique with which I can generate the original file using these files?

Answer 1

我找到了一个可以帮助做到这一点的 node.js 库： Maximize Corresponding github repo

Answer 2

If your objective is "just" to do a onetime re-construction of the original source code I did it using:

Online Source Visualization

1. use the "Custom" option
2. upload compiled file
3. upload source map file

Depending on filesize it may take a while to view the results.

The correspoding Repo is here

Answer 3

This command line tool is really easy to use

npx uglify-js ugly.js -b --source-map "filename='ugly.js.map'" -o beauty.js

https://www.npmjs.com/package/uglify-js

https://stackoverflow.com/a/70584632/13581139