function">extend</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  <span class="token literal-property property">firstName</span><span class="token operator">:</span> <span class="token string">'Trek'</span><span class="token punctuation">,</span>
  <span class="token literal-property property">lastName</span><span class="token operator">:</span> <span class="token string">'Glowacki'</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span