chrome extension v3 webpack 打包

const path = require('path');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const JsonMinimizerPlugin = require("json-minimizer-webpack-plugin");
const WebpackObfuscator = require('webpack-obfuscator');

module.exports = {
  entry: {
    'bg.js': './bg.js',
    'content.js': './content.js',
    'inject.js': './inject.js',
    "libs/app.js": "./libs/app.js",
  },
  mode: 'production',
  output: {
    filename: '[name].[contenthash].js',
    path: path.resolve(__dirname, 'dist'),
  },
  plugins: [
    new CleanWebpackPlugin(),
    new CopyWebpackPlugin({
      patterns: [
        { from: "manifest.json" },
        { from: "README.md" },
      ],
    }),
    new class FileAssetPlugin {
      constructor() {}
      apply(compiler) {
        const pluginName = FilePlugin.name;
        compiler.hooks.emit.tap(pluginName, compilation => {
          const assets = compilation.assets;
          const assetsInfo = compilation.assetsInfo;

          const output = [
            {
              path: 'bg.js',
              asset() {
                return assets[this.name];
              }
            },
            {
              path: 'content.js',
              asset() {
                return assets[this.name];
              }
            },
            {
              path: 'libs/app.js',
              asset() {
                return assets[this.name];
              }
            },
            {
              path: 'inject.js',
              source() {
                return assets[this.name].source().toString('utf-8');
              },
              asset() {
                const source = this.value;
                return {
                  source() {
                    return source;
                  },
                  size() {
                    return source.length;
                  }
                }
              },
              run(fileKeys) {
                let value = this.source(this.name);
                for(const r of output.filter(r => fileKeys.includes(r.path))) {
                  value = value.replace(r.path, r.id);
                }
                this.value = value;
              }
            },
            {
              path: 'manifest.json',
              source() {
                return assets[this.name].source().toString('utf-8');
              },
              asset() {
                const source = this.value;
                return {
                  source() {
                    return source;
                  },
                  size() {
                    return source.length;
                  }
                }
              },
              run(fileKeys) {
                let value = this.source(this.name);
                for(const r of output.filter(r => fileKeys.includes(r.path))) {
                  value = value.replace(r.path, r.id);
                }
                this.value = value;
              }
            }
          ];

          for(const name of Object.keys(assets)) {
            const cur = output.find(r => name.includes(r.path));
            if(cur) {
              const hash = assetsInfo.get(name).contenthash;
              cur.name = name;
              if(hash) {
                cur.id = hash + '.js';
              }
            } else {
              output.push({
                id: name,
                asset() {
                  return assets[name];
                }
              })
            }
          }

          const manifest = output.find(r => r.path.includes('manifest.json'));
          manifest.run(['inject.js', 'content.js', 'bg.js']);
         
          const dep = output.find(r => r.path.includes('inject.js'));
          dep.run(['libs/app.js']);

          const result = {};

          for(const r of output) {
            result[r.id || r.path] = r.asset();
          }

          compilation.assets = result;

          console.log(result);
        })
      }
    },
    new JsonMinimizerPlugin(),
    new WebpackObfuscator({
      // 压缩代码
      compact: true,
      //是否启用控制流扁平化(降低1.5倍的运行速度)
      controlFlowFlattening: true,
      // 应用概率;在较大的代码库中，建议降低此值，因为大量的控制流转换可能会增加代码的大小并降低代码的速度。
      controlFlowFlatteningThreshold: 1,
      // 随机的死代码块(增加了混淆代码的大小)
      deadCodeInjection: true,
      // 死代码块的影响概率
      deadCodeInjectionThreshold: 1,
      // 通过用空函数替换它们来禁用console.log，console.info，console.error和console.warn。这使得调试器的使用更加困难。
      // disableConsoleOutput: true,
      // 标识符的混淆方式 hexadecimal(十六进制) mangled(短标识符)
      identifierNamesGenerator: 'hexadecimal',
      // log: false,
      // 是否启用全局变量和函数名称的混淆
      renameGlobals: false,
      // 通过固定和随机（在代码混淆时生成）的位置移动数组。这使得将删除的字符串的顺序与其原始位置相匹配变得更加困难。如果原始源代码不小，建议使用此选项，因为辅助函数可以引起注意。
      rotateStringArray: true,
      // 混淆后的代码,不能使用代码美化,同时需要配置 cpmpat:true;
      // selfDefending: true,
      // 删除字符串文字并将它们放在一个特殊的数组中
      stringArrayThreshold: 1,
      // 允许启用/禁用字符串转换为unicode转义序列。Unicode转义序列大大增加了代码大小，并且可以轻松地将字符串恢复为原始视图。建议仅对小型源代码启用此选项。
      transformObjectKeys: true,
      unicodeEscapeSequence: false
    })
  ]
}