webpack.config.js

const { resolve } = require('path')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  mode: 'development',
  entry: './src/app.js',
  devtool: 'eval-source-map',
  devServer: {
    port: 8081
  },
  output: {
    filename: '[name]-[hash].js',
    publicPath: '/',
    path: resolve(__dirname, '/src/public/')
  },
  performance: {
    hints: false
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: './src/index.html'
    })
  ],
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /\/node_modules\//,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env']
          }
        }
      }
    ]
  }
}