title: Only arrow functions in eslint?
body: <p>I prefer this: </p>
  
  <pre><code>const foo = x =&gt; x + 1;
  </code></pre>
  
  <p>to this: </p>
  
  <pre><code>function foo(x) {
    return x + 1;
  }
  </code></pre>
  
  <p>Is there an <a href="/questions/tagged/eslint" class="post-tag" title="show questions tagged &#39;eslint&#39;" rel="tag">eslint</a> rule to enforce this? </p>