webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const webpack = require('webpack');
const devMode = process.env.NODE_ENV !== 'production';

const outputDirectory = 'dist';

module.exports = {
  entry: ['babel-polyfill', './src/client/index.js'],
  output: {
    path: path.join(__dirname, outputDirectory),
    filename: 'bundle.js',
    publicPath: '/',
  },
  mode: 'development',
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          devMode ? 'style-loader' : MiniCssExtractPlugin.loader,
          'css-loader',
          'sass-loader',
        ],
      },
      {
        test: /\.(gif|png|jpg|svg)$/,
        loader: 'url-loader?limit=100000',
      },
      {
        test: /\.(otf|woff|woff2|eot|otf|ttf)$/,
        loader: 'file-loader',
      },
    ],
  },
  devtool: 'inline-source-map',
  devServer: {
    port: 8080,
    open: true,
    hot: true,
    contentBase: path.join(__dirname, outputDirectory),
    historyApiFallback: true,
  },
  plugins: [
    new CleanWebpackPlugin([outputDirectory]),
    new HtmlWebpackPlugin({
      template: './public/index.html',
      filename: './index.html',
    }),
    new MiniCssExtractPlugin({
      filename: 'bundle.css',
    }),
    new webpack.HotModuleReplacementPlugin(),
  ],
};