an>) -&gt;
  sourceMapPath = outputPath sourcePath, base, <span class="string">".map"</span>
  jsDir  = path.dirname jsPath
  <span class="function"><span class="title">compile</span></span> = -&gt;
    <span class="keyword">if</span> opts.compile
      js = <span class="string">' '</span> <span class="keyword">if</span> js.length &lt;= <span class="number">0</span>
      <span class="keyword">if</span> generatedSourceMap <span class="keyword">then</span> js = <span class="string">"<span class="subst">#{js}