webpack.mix.js

let mix = require('laravel-mix');
let tailwindcss = require('tailwindcss');
let glob = require("glob-all");
let PurgecssPlugin = require("purgecss-webpack-plugin");

/**
 * Custom PurgeCSS Extractor
 * https://github.com/FullHuman/purgecss
 * https://github.com/FullHuman/purgecss-webpack-plugin
 */
class TailwindExtractor {
  static extract(content) {
    return content.match(/[A-z0-9-:\/]+/g);
  }
}

/*
 |--------------------------------------------------------------------------
 | Mix Asset Management
 |--------------------------------------------------------------------------
 |
 | Mix provides a clean, fluent API for defining some Webpack build steps
 | for your Laravel application. By default, we are compiling the Sass
 | file for your application, as well as bundling up your JS files.
 |
 */

mix.disableNotifications()
   .sass('resources/assets/sass/app.scss', 'web/assets/css')
   .copy('node_modules/font-awesome/fonts', 'web/assets/fonts')
   .options({
     processCssUrls: false,
     postCss: [
       tailwindcss('./tailwind.js'),
     ]
   })

mix.webpackConfig({
  plugins: [
    new PurgecssPlugin({
      paths: glob.sync([
        path.join(__dirname, "resources/views/**/*.twig")
      ]),
      extractors: [
        {
          extractor: TailwindExtractor,
          extensions: ["twig"]
        }
      ]
    })
  ]
});

// Full API
// mix.js(src, output);
// mix.react(src, output); <-- Identical to mix.js(), but registers React Babel compilation.
// mix.ts(src, output); <-- Requires tsconfig.json to exist in the same folder as webpack.mix.js
// mix.extract(vendorLibs);
// mix.sass(src, output);
// mix.standaloneSass('src', output); <-- Faster, but isolated from Webpack.
// mix.fastSass('src', output); <-- Alias for mix.standaloneSass().
// mix.less(src, output);
// mix.stylus(src, output);
// mix.postCss(src, output, [require('postcss-some-plugin')()]);
// mix.browserSync('my-site.dev');
// mix.combine(files, destination);
// mix.babel(files, destination); <-- Identical to mix.combine(), but also includes Babel compilation.
// mix.copy(from, to);
// mix.copyDirectory(fromDir, toDir);
// mix.minify(file);
// mix.sourceMaps(); // Enable sourcemaps
// mix.version(); // Enable versioning.
// mix.disableNotifications();
// mix.setPublicPath('path/to/public');
// mix.setResourceRoot('prefix/for/resource/locators');
// mix.autoload({}); <-- Will be passed to Webpack's ProvidePlugin.
// mix.webpackConfig({}); <-- Override webpack.config.js, without editing the file directly.
// mix.then(function () {}) <-- Will be triggered each time Webpack finishes building.
// mix.options({
//   extractVueStyles: false, // Extract .vue component styling to file, rather than inline.
//   processCssUrls: true, // Process/optimize relative stylesheet url()'s. Set to false, if you don't want them touched.
//   purifyCss: false, // Remove unused CSS selectors.
//   uglify: {}, // Uglify-specific options. https://webpack.github.io/docs/list-of-plugins.html#uglifyjsplugin
//   postCss: [] // Post-CSS options: https://github.com/postcss/postcss/blob/master/docs/plugins.md
// });