Kraken\Promise\Promise::__construct PHP Method

    public function __construct(callable $resolver = null, callable $canceller = null)
    {
        $this->result = null;
        $this->handlers = [];
        $this->canceller = function ($reason = null) use($canceller) {
            try {
                return $canceller !== null && ($result = $canceller($reason)) instanceof self ? $result : $this;
            } catch (Error $ex) {
            } catch (Exception $ex) {
            }
            return $this;
        };
        $this->currentCancellations = 0;
        $this->requiredCancellations = 0;
        $this->mutate($resolver);
    }