ss="cm-variable">x</span>: <span class="cm-variable-3">number</span>;
}
<span class="cm-comment">// ... &#xB2E4;&#xB978; &#xC704;&#xCE58; ...</span>
<span class="cm-keyword">interface</span> <span class="cm-variable">Foo</span> {
  <span class="cm-variable">y</span>: <span class="cm-variable-3">number</span>;
}
<span class="cm-keyword">let</span> <span class="cm-variable">a</span>: <span class="cm-variable-3">Foo</span> <span class="cm-operator">=</span> <span class="cm-meta">...</span>;
<span class="cm-var