webpack.dev.js

const path = require('path');
const webpack = require('webpack');
const HtmlWebPackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');

module.exports = {
  entry: './src/client/index.js',
  output: {
    library: 'Client',
    libraryTarget:'var'
  },
  mode: 'development',
  devtool: 'source-map',
  devServer: {
    port: 3000,
  },
  stats: 'verbose',
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: "babel-loader"
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      }
    ]
  },
  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/client/views/index.html",
      filename: 'index.html'
    }),
    new CleanWebpackPlugin({
      dry: true,
      verbose: true,
      cleanStaleWebpackAssets: true,
      protectWebpackAssets: false
    })
  ]
}