title: ESLint "no-return-assign" with arrow functions?
body: <p>From the ESLint docs:</p>
  
  <p><a href="http://eslint.org/docs/rules/no-return-assign.html" rel="nofollow">http://eslint.org/docs/rules/no-return-assign.html</a></p>
  
  <p>I've tried using:</p>
  
  <pre><code>{
      "no-return-assign": [ 2, "except-parens" ] 
  }
  </code></pre>
  
  <p>but this does not allow assignment in arrow returns. I want not to allow assignment on explicit keyword return assignment, but to allow it in arrow functions. Is this at all possible?</p>