>.<span class="variable">exports</span> = <span class="keyword">function</span>(<span class="variable">ms</span>){
    <span class="variable">ms</span> = <span class="variable">ms</span> || <span class="number integer">1000</span>;
    <span class="keyword">return</span> <span class="keyword">function</span>(<span class="variable">req</span>, <span class="variable">res</span>, <span class="variable">next</span>){
        <span class="variable">setTimeout</span>(<span class="variable">next</span>, <span clas