anchor.diff:        
       * [Multiple bundles](#multiple-bundles)
       
  -      [多重编译包](#multiple-bundles)
  +      [多重包](#multiple-bundles)
       
       * [Loaders](#loaders)
   
  
positive.code:     [配置Webpack](#configure-webpack)
  
      * [Polyfills](#polyfills)
      * [Common configuration](#common-configuration)
        
        [公共配置](#common-configuration)
  
negative.code:   It sees that you're importing `@angular/core` so it adds that to its dependency list for potential inclusion in the bundle.
    It opens the `@angular/core` file and follows _its_ network of `import` statements until it has built the complete dependency graph from `main.ts` down.
    
    这里，Webpack看到我们正在导入`@angular/core`，于是就这个文件加入到它的依赖列表里，为(有可能)把该文件打进包中做准备。
    它打开`@angular/core`并追踪由_该文件的_`import`语句构成的网络，直到构建出从`main.ts`往下的整个依赖图谱。
    
    Then it **outputs** these files to the `app.js` _bundle file_ designated in configuration:
    
  