title: Why do I get SyntaxError: Assigning to rvalue?
body: <p>I have a <code>map()</code> and I want to pass two parameters:</p>
  
  <ol>
  <li>a string</li>
  <li>a function</li>
  </ol>
  
  <p>Example code:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>{
    values.map((workflow, totalWorkflow()) =&gt; {
      return &lt;WorkflowSingle key={ workflow } workflow={ workflow } /&gt;
    })
  }</code></pre>
  </div>
  </div>
  </p>
  
  <p>Why do I get this error: <code>SyntaxError: Assigning to rvalue</code></p>