title: Is it possible in Webpack to have multiple subdirectory entry points with multiple relative outputs
body: <p>Is it possible to set an entry point for each child directory then outputs to a relative build folder.  The result would be a structure something like:</p>
  
  <pre><code> blockholder
  │
  │
  ├── package.json
  ├── webpack.config.js
  │
  │
  ├── block1
  │   ├── index.js
  │   └── build
  │           └── index.build.js
  │
  └── block2
      ├── index.js
      └── build
              └── index.build.js
  </code></pre>
  
  <p>Multiple folders, each with its own entry and build.</p>