@wernfried/minify-all-js

minify-all-js

A function that minifies your javascript files (recursively when --overwrite). minify-all-js was designed to reduce the size of your js files. By giving it a directory and option --overwrite, minify-all-js will walk through the depth of your folders and minify all the javascript that it sees.

Without --overwrite (the default), minify-all-js does not scan directories recursively and files are renamed to ".min.js". If such a file already exists, then it is overwritten. This prevents to get files like ".min.min.min.js" if you run minify-all-js multiple times.

Installation

> npm install -g minify-all-js

Run CLI

> minify-all-js [inputFolder] [outputFolder] [-j] [-m] [-M] [-p] [-o]

Sample

> minify-all-js ./node_modules -j -m -M -p

Use CLI options:

• inputFolder folder of input files or current directory if undefined
• outputFolder folder for output files or inputFolder if undefined
• -j or --json to compress json files as well. (default: false)
• -m or --module to set terser module option to true for ES6 files (default: false)
• -M or --mangle to set terser mangle option to true (default: false)
• -p or --packagejson to clean up extra fields from package.json and files (default: false)
• -a or --all to try to compress all files including binary/executable js files without .js extension (default: false)
• -o or --overwrite to overwrite original files. If true then outputFolder is ignored (default: false)

Run programatically

  var promise = minifyAllJs([directory], {
    compress_json: true, // -j in cli
    module: true,        // -m in cli
    mangle: true,        // -M in cli
    packagejson: true,   // -p in cli
    all_js: true         // -a in cli
  })

minifyAllJs function returns a promise