9.28-155.7 0-214.96z"/>
      </svg></a> </h3>
<section aria-labelledby="toc_features">
<p>Features must always be wrapped in a feature flag. Tests for the feature
must also be wrapped in a feature flag.</p>
<p>Because the build-tools will process feature-flags, flags must use
precisely this format. We are choosing conditionals rather than a block
form because functions change the surrounding scope and may introduce
problems with early return.</p>
<pre class="language-javascript line-numbers"><code class="j