webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const WebpackMd5Hash = require('webpack-md5-hash');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  entry: ['@babel/polyfill', './src/index.js'],
  output: {
    path: path.resolve(__dirname, 'public'),
    publicPath: '',
    filename: '[name].[hash].js'
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader', 'eslint-loader']
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: [
          'style-loader',
          MiniCssExtractPlugin.loader,
          'css-loader',
          'sass-loader'
        ]
      },
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: 'file-loader',
            options: {}
          }
        ]
      }
    ]
  },
  resolve: {
    extensions: ['*', '.js', '.jsx']
  },
  devServer: {
    historyApiFallback: true,
    compress: true
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin({
      filename: 'main.[hash].css'
    }),
    new HtmlWebpackPlugin({
      inject: false,
      hash: true,
      template: './src/index.html'
    }),
    new WebpackMd5Hash()
  ]
};