React.PHP promise timeout

gistfile1.php

<?php

use React\Promise\Deferred;

function timeout($time, $promise, $loop) {
  $defer = new Deferred;
  $r = $defer->resolver();
  $sig = $loop->addTimer($time, function() use($r) {
    $r->reject('timeout');
  });

  $promise->then(
    function ($x) use($r, $sig) { $loop->cancalTimer($sig); $r->resolve($x); },
    function ($e) use($r)       {                           $r->reject($e);  }
  );

  return $defer->promise();
}