//@ts-check

'use strict';

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

//@ts-check
/** @typedef {import('webpack').Configuration} WebpackConfig **/

/** @type WebpackConfig */
const extensionConfig = {
  target: 'node',
  mode: process.env.NODE_ENV === 'production' ? 'production' : 'none',

  entry: './src/extension.ts',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'extension.js',
    libraryTarget: 'commonjs2',
    clean: true // 自动清理旧文件
  },
  externals: {
    vscode: 'commonjs vscode',
    'node-notifier': 'commonjs node-notifier'
  },
  resolve: {
    extensions: ['.ts', '.js'],
    mainFields: ['module', 'main']
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'ts-loader',
            options: {
              transpileOnly: true, // 加快编译速度
              compilerOptions: {
                sourceMap: true
              }
            }
          }
        ]
      }
    ]
  },
  devtool: process.env.NODE_ENV === 'production' ? 'hidden-source-map' : 'nosources-source-map',
  infrastructureLogging: {
    level: "log",
  },
  plugins: [
    new CopyWebpackPlugin({
      patterns: [
        { from: 'src/assets', to: 'assets' }
      ]
    })
  ],
  optimization: {
    minimize: process.env.NODE_ENV === 'production',
    usedExports: true // Tree Shaking
  },
  performance: {
    hints: 'warning',
    maxAssetSize: 2 * 1024 * 1024, // 2MB
    maxEntrypointSize: 2 * 1024 * 1024
  }
};
module.exports = [ extensionConfig ];