const path=require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
//const { HtmlWebpackPlugin } = require("html-webpack-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');
//const { VueLoaderPlugin } = require('vue-loader/dist/index');
const { VueLoaderPlugin } = require('vue-loader');

module.exports={
  entry:{
    index:"./index.js",
    sample:"./utils/sample.js",
  },
  output:{
    filename:"[name].js",
    path:path.resolve(__dirname,"./dist"),
    assetModuleFilename:"media/[name].[ext]",
    // publicPath: '/',  // 静态资源公共路径
    // clean: true       // 构建前清空 dist 目录
  },
  resolve: {
    alias: {
      vue: 'vue/dist/vue.esm-bundler.js' // 关键配置
    }
  },
  module:{
    rules:[
      {
        test:/\.css$/i,
        use:["style-loader","css-loader"]
      },
     {
      test:/\.vue$/,
      use:[
        { loader:"vue-loader" }
      ]
    },
      // 处理 .js 文件
    {
      test: /\.js$/,
      exclude: /node_modules/,
      use: {
        loader: 'babel-loader',
        // options: {
        //   presets: ['@babel/preset-env']
        // }
      }
    },
    {
     test:/\.(png|jpe?g|gif|svg)$/i,
    //  use:[{ 
    //   loader:"file-loader",
    //   options:{
    //     limit: 512 * 1024,
    //     name: "[name].[ext]",
    //     outputPath:"media",
    //   },
    //  }]
      type: 'asset/resource',
      // generator:{
      //   filename: "[name].[ext]",
      // }
   },
   {
      test:/\.(woff2?|eof|ttf)$/i,
    //  use:[{ 
    //   loader:"file-loader",
    //   options:{
    //     limit: 512 * 1024,
    //     name: "[name].[ext]",
    //     outputPath:"media",
    //   },
    //  }]
      type: 'asset/resource',
      generator:{
        filename: "./font/[name].[ext]",
      }
  },]
  },
  plugins:[
    new VueLoaderPlugin(),
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      inject:'head',
      title:"index page ",
      template:"./index.html",
      filename:"index.html",
      chunks:['index'],
    }),
    new HtmlWebpackPlugin({
      inject:'body',
      title:"sample page",
      template:"./pages/sample.html",
      filename:"sample.html",
      chunks:['sample'],
    }),
  ],
  // // 优化配置（如代码拆分）
  // optimization: {
  //   splitChunks: {
  //     chunks: 'all',
  //     minSize: 20000,
  //     cacheGroups: {
  //       vendors: {
  //         test: /[\\/]node_modules[\\/]/,
  //         priority: -10,
  //         reuseExistingChunk: true,
  //         name: 'vendors'
  //       }
  //     }
  //   }
  // }
}