n> <span class="token punctuation">{</span>
    assert<span class="token punctuation">.</span><span class="token function">equal</span><span class="token punctuation">(</span><span class="token function">formatCurrency</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">199</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> <span class="token literal-property property">si