ent</span><span class="op">.</span><span class="fu">waitUntil</span>(</span>
<span id="cb927-3"><a href="mobile-pwa.html#cb927-3" aria-hidden="true" tabindex="-1"></a>    (<span class="kw">async</span> () <span class="kw">=&gt;</span> {</span>
<span id="cb927-4"><a href="mobile-pwa.html#cb927-4" aria-hidden="true" tabindex="-1"></a>      <span class="co">// Enable navigation preload if it's supported.</span></span>
<span id="cb927-5"><a href="mobile-pwa.html#cb927-5" aria-hidden="true" tabindex="-1"></a>   