an> <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwa">return this</span><span class="hl opt">.</span>stream<span class="hl opt">.</span><span class="hl kwd">write</span><span class="hl opt">(</span>data<span class="hl opt">);</span>
      <span class="hl opt">}</span>
    <span class="hl opt">};</span>

    StreamOutput<span class="hl opt">.</span><span class="hl kwa">prototype</span><span class="hl opt">.</span>writeln <span class="hl opt">=</span> <span class="hl 