t = retObj.<span class="hljs-property">set</span>;
    <span class="hljs-keyword">for</span>(<span class="hljs-keyword">const</span> [key, value] <span class="hljs-keyword">of</span> <span class="hljs-variable language_">this</span>) {
        <span class="hljs-keyword">const</span> newValue = <span class="hljs-title class_">Reflect</span>.<span class="hljs-title function_">apply</span>(callbackFn, thisArg, [value, key, <span class="hljs-variable language_">this</span>])
        <span class="hljs-title clas