webpack.config.js

const path = require('path');
const glob = require('glob-all');
const PurgecssPlugin = require('purgecss-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = (env, options) => ({
  entry: {
    'index.js': ['./src/index.js'].concat(glob.sync('./src/assets/js/**/*.js'))
  },
  output: {
    filename: 'js/index.js',
    path: path.resolve(__dirname, 'docs')
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      },
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader'
        ]
      },
      {
        test: /\.(woff(2)?|ttf|otf|eot)(\?v=\d+\.\d+\.\d+)?$/,
        use: [{
          loader: 'file-loader',
          options: {
            name: '[name].[ext]',
            outputPath: 'fonts'
          }
        }]
      },
      {
        test: /\.(png|svg|jpg)(\?v=\d+\.\d+\.\d+)?$/,
        use: [{
          loader: 'file-loader',
          options: {
            name: '[name].[ext]',
            outputPath: 'images'
          }
        }]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: 'src/views/index.ejs'
    }),
    new MiniCssExtractPlugin({filename: '[name].css'}),
    new PurgecssPlugin({
      paths: glob.sync([`${path.join(__dirname, 'src', 'assets', 'css')}/**/*`, './src/views/index.ejs'], { nodir: true })
    }),
    new CopyWebpackPlugin({
      patterns: [
        { from: "./src/assets/images", to: "images" },
        { from: "./src/assets/videos", to: "videos" },
        { from: "./src/CNAME", to: "." }
      ]
    })
  ]
});