Reverse engineering JavaScript and CSS sources from sourcemaps
npm install reverse-sourcemapreverse-sourcemap command line utility globally with npm.
sudo, depending on the platform. In most cases just:
sh
npm install --global reverse-sourcemap
`
Please note that the minimum supported version of Node.js is 8.11.1, which is the active Long Term Support (LTS) version.
Command line options
The output of reverse-sourcemap --help pretty much covers all the options:
`sh
reverse-sourcemap - Reverse engineering JavaScript and CSS sources from sourcemaps
Usage: reverse-sourcemap [options]
-h, --help Help and usage instructions
-V, --version Version number
-v, --verbose Verbose output, will print which file is currently being processed
-o, --output-dir String Output directory - default: .
-M, --match String Regular expression for matching and filtering files - default: \.map$
-r, --recursive Recursively search matching files
Version 0.4.0
`
Testing
Test files are generated with UglifyJS2 and
sass
by using files from the stretchy project,
with the following commands:
`sh
uglifyjs stretchy.js --compress --mangle \
-o stretchy.min.js --source-map stretchy.min.js.map
uglifyjs stretchy.js --compress --mangle \
-o stretchy.min.js --source-map stretchy-with-sources.min.js.map \
--source-map-include-sources
sass stretchy.scss:stretchy.css
sass stretchy.scss:stretchy.css --sourcemap=inline
`
Unit tests are written with tape and can be executed with npm test.
Code coverage is inspected with nyc and
can be executed with npm run coverage after running npm test.
Please make sure it is over 90% at all times.
Contributing
"A Beginner's Guide to Open Source: The Best Advice for Making your First Contribution".
Also there is a blog post about "45 Github Issues Dos and Don’ts".
Linting is done with ESLint and can be executed with npm run lint`.