<span class="hljs-string">&#x27;1234<span class="hljs-subst">$identifier</span> <span class="hljs-subst">$true</span>&#x27;</span>;
<span class="hljs-comment">// comment</span>
<span class="hljs-string">&#x27;1234<span class="hljs-subst">${<span class="hljs-number">1234</span> + <span class="hljs-keyword">true</span> + <span class="hljs-string">&#x27;foo&#x27;</span>}</span>&#x27;</span>;
