webpack.mix.js

const cssImport = require("postcss-import");
const cssNesting = require("postcss-nesting");
const mix = require("laravel-mix");
const path = require("path");
const purgecss = require("@fullhuman/postcss-purgecss");
const tailwindcss = require("tailwindcss");

/*
 |--------------------------------------------------------------------------
 | 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 the application as well as bundling up all the JS files.
 |
 */

mix.react("resources/js/app.js", "public/js")
    .postCss("resources/css/app.css", "public/css/app.css")
    .options({
        postCss: [
            cssImport(),
            cssNesting(),
            tailwindcss("tailwind.config.js"),
            ...(mix.inProduction()
                ? [
                      purgecss({
                          content: [
                              "./resources/views/**/*.blade.php",
                              "./resources/js/**/*.js"
                          ],
                          defaultExtractor: content =>
                              content.match(/[\w-/:.]+(?<!:)/g) || [],
                          whitelistPatternsChildren: [/nprogress/]
                      })
                  ]
                : [])
        ]
    })
    .webpackConfig({
        output: { chunkFilename: "js/[name].js?id=[chunkhash]" },
        resolve: {
            alias: {
                "@": path.resolve("resources/js")
            }
        }
    })
    .version()
    .sourceMaps();