d">const</span> App <span class="token operator">=</span> Application<span class="token punctuation">.</span><span class="token function">extend</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  <span class="token literal-property property">rootElement</span><span class="token operator">:</span> <span class="token string">'#app'</span><span class="token punctuation">,</span>
  <span class="token literal-property property">modulePrefix</span><span class="token operator"