webpack.config.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
module.exports = {
  entry: './test/index.js',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /(node_modules|bower_components)/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/env', '@babel/react'],
          plugins: ['@babel/plugin-transform-runtime']
        }
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /chai.js$/,
        use: ['script-loader']
      }
    ]
  },
  resolve: { extensions: ['*', '.js', '.jsx'] },

  output: {
    path: path.resolve(__dirname, 'dist/'),
    publicPath: '/dist/',
    filename: 'bundle.js'
  },
  devServer: {
    contentBase: path.join(__dirname, 'public/'),
    port: 3005,
    disableHostCheck: true,
    publicPath: 'http://localhost:3000/dist/',
    hot: true,
    open: true
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin()
  ]
}