webpack.mix.js

const mix = require('laravel-mix');
const tailwindcss = require('tailwindcss');

//require('mix-tailwindcss');

require('tailwind-not-last-child')({
    notable: [
        {
            type: 'margin',
            char: 'm'
        },
        {
            type: 'padding',
            char: 'p'
        }
    ]
});

/*
 |--------------------------------------------------------------------------
 | 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.js('resources/js/app.js', 'public/js').sourceMaps();

mix.sass('resources/sass/app.scss', 'public/css')
    .options({
        processCssUrls: false,
        postCss: [tailwindcss('tailwind.config.js')],
    }).sourceMaps();