title: vuejs webpack relative modules were not found error
body: <p>I have full-stack application with express and default vue-webpack-boilerplate.
  My project structure looks like this:</p>
  
  <pre><code>├── client
  │   ├── build
  │   │   └── ...
  │   ├── config
  │   │   └── ...
  │   ├── dist
  |   |   └── ...
  │   ├── index.html
  │   ├── src
  │   │   ├── App.vue
  │   │   ├── assets
  │   │   │   └── ...
  │   │   ├── components
  │   │   │   └── ...
  │   │   ├── main.js
  │   │   └── router
  │   └── static
  ├── node_modules
  ├── package.json
  └── server
      ├── app.js
      ├── bin
      │   └── www
      └── routes
          └── ...
  </code></pre>
  
  <p>When I run <code>$ node client/build/dev-server.js</code> i receive this error: </p>
  
  <pre><code>ERROR  Failed to compile with 2 errors
  
  These relative modules were not found:
  
  * ./build/dev-client in multi ./build/dev-client ./src/main.js
  * ./src/main.js in multi ./build/dev-client ./src/main.js
  </code></pre>
  
  <p>but only if I trying to run it from client folder it works properly. </p>
  
  <pre><code>$ cd client 
  $ node build/dev-server.js
  </code></pre>
  
  <p>any suggestions?</p>