, [value, key, <span class="hljs-variable language_">this</span>])
        <span class="hljs-title class_">Reflect</span>.<span class="hljs-title function_">apply</span>(_set, retObj, [newKey, value]);
    }
    <span class="hljs-keyword">return</span> retObj;
}</code></pre></emu-import>
        </emu-clause>

        <emu-clause id="Map.prototype.filter">
            <h1><span class="secnum">3.3</span> Map.prototype.filter( <var>callbackfn</var>, [ <var>thisArg</var> ] )</h1>
            <emu-import href="