span><span class="nx">names</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">index</span><span class="p">,</span><span class="w"> </span><span class="mf">1</span><span class="p">,</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">firstName</span><span class="o">:</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">firstName</span><span class="p">,</span><span class="