webpack.config.js

const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const nodeExternals = require('webpack-node-externals');

module.exports = {
  entry: { main: './src/index.js' },
  output: {
    path: path.resolve(__dirname, 'src/public'),
    filename: 'js/[name].bundle.js',
  },
  resolve: {
    alias: {
      '@app': path.resolve(__dirname, 'src'),
    },
  },
  target: ['web', 'es5'],
  externals: [nodeExternals()],
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader,
          { loader: 'css-loader', options: { url: false } },
          'postcss-loader',
          'sass-loader'],
      },
      {
        enforce: 'pre',
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'eslint-loader',
      },
      {
        // Transpiles ES6-8 into ES5
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'css/style.css',
    }),
  ],
};