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    2.0.0 • Public • Published

    purgecss-loader - One Amex

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    This Webpack loader uses purgecss to strip unused selectors from your CSS.

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    📖 Table of Contents


    • Ability to remove CSS modules
    • Ability to remove plain CSS declarations
    • Reduce bundle size

    🤹‍ Usage

    npm install -D @americanexpress/purgecss-loader

    🎛️ API

    Configure as follows:

    module.exports = {
      entry: {...},
      output: {...},
      module: {
        rules: [
            test: /\.css$/,
            use: [
                loader: 'css-loader',
                options: {
                  modules: true,
                  localIdentName: '[name]__[local]___[hash:base64:5]',
                loader: '@americanexpress/purgecss-loader',
                options: {
                  paths: [path.join(somePath, 'src/**/*.{js,jsx}')],
                  whitelistPatternsChildren: [/:global$/],

    You should use this with the css-loader as seen above. However, it is not required that you use CSS modules. That is in the example to express this loader's compatibility.


    Property Description Required
    paths An array of file glob patterns true
    extractors An array of purgecss extractors false
    fontFace boolean (default: false) see options false
    keyframes boolean (default: false) see options false
    variables boolean (default: false) see options false
    whitelist string[] see options false
    whitelistPatterns Array<RegExp> see options false
    whitelistPatternsChildren Array<RegExp> see options false

    🗝️ License

    Any contributions made under this project will be governed by the Apache License 2.0.

    🗣️ Code of Conduct

    This project adheres to the American Express Community Guidelines. By participating, you are expected to honor these guidelines.

    🏆 Contributing

    We welcome Your interest in the American Express Open Source Community on Github. Any Contributor to any Open Source Project managed by the American Express Open Source Community must accept and sign an Agreement indicating agreement to the terms below. Except for the rights granted in this Agreement to American Express and to recipients of software distributed by American Express, You reserve all right, title, and interest, if any, in and to Your Contributions. Please fill out the Agreement.

    Please feel free to open pull requests and see for commit formatting details.


    npm i @americanexpress/purgecss-loader

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