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mangle-tailwind-class-webpack-plugin

v0.0.1

Published

Minifies and obfuscates the class names in your existing JavaScript, CSS, and HTML without any modern css modules.

Downloads

3

Readme

Build Status

  npm i --save-dev mangle-css-class-webpack-plugin
  yarn add --dev mangle-css-class-webpack-plugin

The latest version WORKS ONLY with Webpack 5. For Webpack v4 & v3 support, install version 4.x([email protected]).

The plugin generates optimized class name in HTML, JavaScript, and CSS files. configure as follows:

webpack.config.js

const MangleCssClassPlugin = require('mangle-css-class-webpack-plugin');

module.exports = {
  ...
  plugins: [
    new MangleCssClassPlugin({
      classNameRegExp: '[cl]-[a-z][a-zA-Z0-9_]*',
      mangleCssVariables: true,
      log: true,
    }),
  ],
};

This replaces class names matched regex in HTML, JavaScript, CSS files. Define the class names not to match unexpected words since it replaces all words that are matched with the classNameRegExp. We suggest that your class names have specific prefix or suffix that can be identified as class name.

Options

classNameRegExp

e.g. '(abc-|efg-)?[cl]-[a-z][a-zA-Z0-9_]*'
the sample regexp maches l-main, c-textbox, l-main__header, abc-textbox__input, and so on...

reserveClassName

The class names won't be used.
e.g.

reserveClassName: ['fa', 'fas', 'far'],

ignorePrefix

The prefix will be ignored from mangling.
e.g.

classNameRegExp: '(abc-|efg-)?[cl]-[a-z][a-zA-Z0-9_]*',
ignorePrefix: ['abc-', 'efg-'],

In this case, abc-c-textbox__input becomes abc-a.

ignorePrefixRegExp

Same behavior as ignorePrefix.
e.g.

classNameRegExp: '((hover|focus|xs|md|sm|lg|xl)[\\\\]*:)*tw-[a-z_-][a-zA-Z0-9_-]*',
ignorePrefixRegExp: '((hover|focus|xs|md|sm|lg|xl)[\\\\]*:)*',

In this case, hover\:xs\:c-textbox__input becomes hover\:xs\:a.

classGenerator

Override the default class name generator.

// original: original class name
// opts: options of the plugin
// context: own context of the class generator(initial value is just an empty object)
classGenerator: (original, opts, context) => {
  // return custom generated class name.
  // Or return undefined if you want to leave it to the original behavior.
}

mangleCssVariables

When truthy, the plugin will also mangle CSS variables (custom properties) whose name is matching the same classNameRegExp. Disabled by default.

Example

Source code

<!-- html -->
<main class='l-abc'>
  <div class='l-efg' />
</main>
// js
document.querySelector('l-efg');
// css
.l-abc {
}
.l-abc .l-efg {
}

Output code

<!-- html -->
<main class='a'>
  <div class='b' />
</main>
// js
document.querySelector('b');
// css
.a {
}
.a .b {
}