webpack.config.dev.js

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

const outputDir = 'dist';
module.exports = {
  mode: 'development',
  entry: [
    'babel-polyfill',
    'webpack-hot-middleware/client',
    './src/client/index.js',
  ], // enables async-await in client code with babel-polyfill
  output: {
    path: path.join(__dirname, outputDir),
    filename: 'bundle.js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.(jpg|png|svg)$/,
        loader: 'url-loader',
        options: {
          limit: 25000,
        },
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(), // removes all files in webpack's output.path
    new HtmlWebpackPlugin({
      template: './public/origin/index.html',
    }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin(),
  ],
};