webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CopyPlugin = require('copy-webpack-plugin');
module.exports = {
  entry: ['./src/app/main'],
  devtool: 'inline-source-map',
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          // Creates `style` nodes from JS strings
          "style-loader",
          // Translates CSS into CommonJS
          {
            loader: "css-loader",
            options: {
              sourceMap: true,
            },
          },
          // Compiles Sass to CSS
          {
            loader: "sass-loader",
            options: {
              sourceMap: true,
              implementation: require("sass"),
              sassOptions: {
                fiber: false,
                outputStyle: "compressed",
              },
            },
          }
        ],
      }
    ],
  },
  resolve: {
    extensions: ['.ts', '.js'],
  },
  output: {
    filename: 'bundle.[chunkhash].js',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new HtmlWebpackPlugin({ // Also generate a test.html
      filename: 'index.html',
      template: 'src/index.html',
      hash: true,
    }),
    new CleanWebpackPlugin(),
    new CopyPlugin({
      patterns: [
        {
          from: 'src/assets',
          to: 'assets',
          noErrorOnMissing: true,
          globOptions: {
            ignore: [
              // Ignore all `txt` files
              "**/*.scss"
            ],
          },
        },

      ]
    })
  ]
};