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Dir : ~/usr/share/php/React/Promise/

Edit File: Deferred.php

<?php

namespace React\Promise;

/**
 * @template T
 */
final class Deferred
{
    /**
     * @var PromiseInterface<T>
     */
    private $promise;

/** @var callable(T):void */
    private $resolveCallback;

/** @var callable(\Throwable):void */
    private $rejectCallback;

/**
     * @param (callable(callable(T):void,callable(\Throwable):void):void)|null $canceller
     */
    public function __construct(?callable $canceller = null)
    {
        $this->promise = new Promise(function ($resolve, $reject): void {
            $this->resolveCallback = $resolve;
            $this->rejectCallback  = $reject;
        }, $canceller);
    }

/**
     * @return PromiseInterface<T>
     */
    public function promise(): PromiseInterface
    {
        return $this->promise;
    }

/**
     * @param T $value
     */
    public function resolve($value): void
    {
        ($this->resolveCallback)($value);
    }

public function reject(\Throwable $reason): void
    {
        ($this->rejectCallback)($reason);
    }
}