n>_ref1 <span class="hl opt">=</span> options<span class="hl opt">.</span>parser<span class="hl opt">) ==</span> <span class="hl kwa">null</span><span class="hl opt">) {</span>
        options<span class="hl opt">.</span>parser <span class="hl opt">=</span> <span class="hl kwa">new</span> <span class="hl kwd">Parser</span><span class="hl opt">(</span>options<span class="hl opt">);</span>
      <span class="hl opt">}</span>
      <span class="hl kwa">return</span> options<span class="hl opt">.</span>parser<s