n class="nx">m4</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Map</span><span class="p">();</span>

<span class="kr">const</span> <span class="nx">m</span> <span class="o">=</span> <span class="nx">mergeMaps</span><span class="p">(</span><span class="nx">m1</span><span class="p">,</span> <span class="nx">m2</span><span class="p">,</span> <span class="nx">m3</span><span class="p">,</span> <span class="nx">m4</span><span class="p">);</span>
</pre></div>
                
         