webpack.config.js

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

const isDevelopment = process.env.NODE_ENV !== 'production'

module.exports = {
  mode: isDevelopment ? 'development' : 'production',
  devtool: isDevelopment ? 'eval-source-map' : 'source-map',
  entry: path.resolve(__dirname, 'src', 'index.jsx'),
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  },

  resolve: {
      extensions: ['.js', '.jsx'],
  },

  devServer: {
    static: path.join(__dirname, 'public'),
  },

  plugins: [
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, 'public', 'index.html'),
    })
  ],

  module: {
    rules: [
      {
        test: /\.jsx$/,
        exclude: /node_modules/,
        use: 'babel-loader',
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader' , 'sass-loader'],
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.(jpg|png|gif|jpeg|svg|ico)$/,
        exclude: /node_modules/,
        include: /images/,
        use: ['file-loader'],
      }
    ]
  }
}