><code>Checkpoints</code></a> object outside the application, which is used in the <code>BackwardCheckpointsView</code> component by reference to render a list of previous checkpoints.</p><pre><code><span class="keyword">import</span> React <span class="keyword">from</span> <span class="string">'react'</span><span class="punctuation">;</span>
<span class="keyword">import</span> <span class="punctuation">{</span>createRoot<span class="punctuation">}</span> <span class="keyword">from</span> <span class="strin