pan>dataIndex<span class="token punctuation">;</span>
  <span class="token keyword">return</span> index <span class="token operator">%</span> <span class="token number">2</span> <span class="token operator">===</span> <span class="token number">0</span> <span class="token operator">?</span> <span class="token string">'circle'</span> <span class="token operator">:</span> <span class="token string">'rect'</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="toke