webpack.config.js

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

const port = process.env.PORT || 8081;

module.exports = {
  entry: './src/index.js',
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
      },
      {
        test: /\.(css|scss)$/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        use: [
          {
            loader: 'file-loader',
          },
        ],
      },
      {
        test: /\.(woff2|ttf|woff|eot)$/,
        use: [
          {
            loader: 'file-loader',
          },
        ],
      },
    ],
  },
  resolve: {
    extensions: ['*', '.js', '.jsx', '.css', '.scss'],
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new HtmlWebpackPlugin({
      template: './dist/index.html',
    }),
  ],
  devServer: {
    contentBase: './dist',
    host: 'localhost',
    port: port,
    hot: true,
    historyApiFallback: true,
  },
};