const path = require('path')
const nodeExternals = require('webpack-node-externals')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')

module.exports = {
  mode: 'development',
  // 动态确定入口文件
  entry: ['./src/index.ts'],
  devtool: 'source-map',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'index.js'
  },
  target: 'node',
  node: {
    __dirname: true
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader'
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin()
  ],
  resolve: {
    extensions: ['.ts', '.js'],
    alias: {
      '@': path.resolve(__dirname, 'src')
    }
  },
  externals: [nodeExternals()]
}