webpack.config.dev.js

const path = require('path');

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

// output folder location
const distFolder = "./dist";

module.exports = {
  mode: 'development',
  entry: './src/index.ts',
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new CopyWebpackPlugin([
      { from: 'src/assets', to: 'assets' },
    ])
  ],
  devtool: 'inline-source-map',
  devServer: {
    contentBase: distFolder
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader',
        exclude: /node_modules/
      }
    ]
  },
  optimization: {
    splitChunks: {
        cacheGroups: {
            commons: {
                test: /[\\/]node_modules[\\/]/,
                name: "vendors",
                chunks: "all"
            }
        }
    }
  },
  resolve: {
    extensions: [ ".ts", ".js" ]
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, distFolder)
  }
};