webpack.config.js

const path = require('path');
const VueLoaderPlugin = require('vue-loader/lib/plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: '.src/js/script',
  output: {
    path: path.resolve(__dirname, 'public/js'),
    filename: 'script.min.js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-env'],
        },
      },
      { test: /\.vue$/, loader: 'vue-loader' },
      { test: /\.css$/, loader: ['vue-style-loader', 'css-loader'] },
      {
        test: /\.pug$/,
        oneOf: [
          // this applies to `<template lang="pug">` in Vue components
          {
            resourceQuery: /^\?vue/,
            use: ['pug-plain-loader'],
          },
          // this applies to pug imports inside JavaScript
          {
            use: ['raw-loader', 'pug-plain-loader'],
          },
        ],
      },
    ],
  },
  devtool: 'source-map',
  plugins: [
    new VueLoaderPlugin(),
    new HtmlWebpackPlugin({
      template: './src/index.pug',
    }),
  ],
  resolve: {
    alias: {
      vue$: 'vue/dist/vue.esm.js',
    },
  },
};