webpack.config.js

'use strict'

const path = require('path')
const fs = require('fs')
const autoprefixer = require('autoprefixer')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const purgecss = require('@fullhuman/postcss-purgecss')
const MiniCssExtractPlugin = require("mini-css-extract-plugin")

const pages =
  fs
    .readdirSync(path.resolve(__dirname, 'src'))
    .filter(fileName => fileName.endsWith('.html'))

module.exports = {
  mode: 'development',
  entry: './src/js/main.js',
  output: {
    filename: 'main.js',
    path: path.resolve(__dirname, 'dist')
  },
  devServer: {
    static: path.resolve(__dirname, 'dist'),
    port: 8080,
    hot: true
  },
  plugins: [
    new MiniCssExtractPlugin(),
    ...pages.map(page => new HtmlWebpackPlugin({
      template: "src/" + page,
      filename: page
    }))
  ],
  resolve: {
    fallback: {
      "fs": false,
      "tls": false,
      "net": false,
      "path": false,
      "zlib": false,
      "http": false,
      "https": false,
      "stream": false,
      "crypto": false,
      "process": false
    } 
  },
  module: {
    rules: [
      {
        test: /\.(scss)$/,
        use: [
          {
            // Adds CSS to the DOM by injecting a `<style>` tag
            loader: MiniCssExtractPlugin.loader
          },
          {
            // Interprets `@import` and `url()` like `import/require()` and will resolve them
            loader: 'css-loader'
          },
          {
            // Loader for webpack to process CSS with PostCSS
            loader: 'postcss-loader',
            options: {
              postcssOptions: {
                plugins: [
                  autoprefixer,
                  purgecss({
                    content: ['./**/*.html']
                    })
                ]
              }
            }
          },
          {
            // Loads a SASS/SCSS file and compiles it to CSS
            loader: 'sass-loader'
          }
        ]
      }
    ]
  }
}