title: Vue Uncaught RangeError Maximum call stack size exceeded
body: <p>when i build my <code>vue project</code>, browser always throw error: <code>Uncaught RangeError Maximum call stack size exceeded</code>, no matter it is in proxy environment or not.</p>
  
  <p>versions:</p>
  
  <pre><code>*vue@ 2.1.8
  *vue-router@2.1.1
  *vue-loader@9.8.0
  </code></pre>