webpack.config.dev.js

const HtmlWebpackPlugin = require("html-webpack-plugin");
const webpack = require('webpack');

module.exports = {
  mode: 'development',
  entry: [
    '@babel/polyfill',
    'react-hot-loader/patch',
    './public/index.js'
  ],
  devtool: 'inline-source-map',
  devServer: {
    host: '0.0.0.0',
    port: 3000,
    historyApiFallback: true,
    open: true,
    hot: true
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_module/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader",
            options: { minimize: true }
          }
        ]
      },
      {
        // write image files under 10k to inline or copy image files over 10k
        test: /\.(jpg|jpeg|gif|png|svg|ico)?$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 10000,
              fallback: 'file-loader',
              name: 'images/[name][hase:8].[ext]',
            },
          },
        ],
      },
      {
        // write files under 10k to inline or copy files over 10k
        test: /\.(woff|woff2|eot|ttf|otf)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 10000,
              fallback: 'file-loader',
              name: 'fonts/[name].[ext]',
            },
          },
        ],
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "./public/index.html",
      favicon: './public/favicon.ico',
      filename: "index.html"
    }),
    new webpack.HotModuleReplacementPlugin(),
  ]
}