webpack.config.js

const path = require('path')
const glob = require('glob')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const CopyPlugin = require('copy-webpack-plugin')

const generateHtmlPlugins = () => glob.sync('./src/**/index.html').map((item) => new HtmlWebpackPlugin({
  template: item,
  filename: `./${item.replace('/src', '').replace('./', '')}`,
  inject: false,
  templateParameters: {
    path: `.${item.replace('/src', '').replace('.html', '.js')}`,
    pathCSS: `.${item.replace('/src', '').replace('index.html', 'style.css')}`,
  },
}))

module.exports = {
  entry: glob.sync('./src/**/index.ts').reduce((acc, filePath) => {
    const entry = filePath.replace('/index.ts', '').replace('/src', '')
    acc[entry] = filePath
    return acc
  }, {}),
  output: {
    filename: './[name]/index.js',
    path: path.resolve(__dirname, 'demo'),
    assetModuleFilename: 'images/[hash][ext][query]',
  },
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(js|mjs|jsx|ts|tsx)$/,
        exclude: /(node_modules|bower_components)/,
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['@babel/preset-env', '@babel/preset-typescript'],
            },
          },
        ],
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader', // creates style nodes from JS strings
          },
          {
            loader: 'css-loader', // translates CSS into CommonJS
          },
        ],
      },
      {
        test: /\.(png|jpg)$/,
        type: 'asset/resource',
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js', '.jsx', 'mjs'],
  },
  plugins: [
    ...generateHtmlPlugins(),
    new CopyPlugin({
      patterns: [
        {
          from: 'src/assets/**/*',
          to({ absoluteFilename }) {
            const pathAndName = absoluteFilename.split('src/')[1]
            return pathAndName
          },
        },
        {
          from: 'src/**/*.css', // Match all CSS files in the src directory
          to({ context, absoluteFilename }) {
            // Calculate the relative path of the file within the src directory
            const relativePath = path.relative(context, absoluteFilename)
            // Determine the destination path based on the relative path
            return relativePath.split('src/')[1]
          },
        },
      ],
    }),
  ],
  mode: 'development',
  devServer: {
    contentBase: './demo',
    open: true,
    host: '0.0.0.0',
  },
}