n class="punctuation">(</span><span class="punctuation">)</span> <span class="operator">=></span> <span class="string">'0'</span><span class="punctuation">,</span> <span class="punctuation">[</span><span class="punctuation">]</span><span class="punctuation">,</span> checkpoints<span class="punctuation">)</span><span class="punctuation">;</span>
  <span class="keyword">return</span> <span class="punctuation">(</span>
    <span class="tag"><span class="tag"><span class="punctuation">&lt;</span>span</span> <sp