webpack.config.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const {CleanWebpackPlugin} = require('clean-webpack-plugin');

module.exports = {
  entry: './src/js/main.js',
  output: {
    filename: '[name].[hash].js',
    path: path.resolve('./dist')
  },
  devtool: 'source-map',
  devServer: {
    contentBase: './dist',
    open: true,
    port: 5000,
    stats: 'minimal'
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env']
          }
        }
      },
      {
        test: /\.scss$/,
        use: [
          'css-hot-loader',
          MiniCssExtractPlugin.loader,
          'css-loader',
          'postcss-loader',
          'sass-loader'
        ]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new MiniCssExtractPlugin({
      filename: 'main.[hash].css'
    })
  ]
}