Promise.all Polyfill Javascript

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Promise.allPolyfill = (promises) => {
	return new Promise((resolve, reject) => {
		const result = [];
		
		if (!promises.length) {
			resolve(results);
			return;
		}
		
		let pending = promises.length;
		
		promises.forEach((promise, idx) => {
			Promise.resolve(promise).then((res) => {
				results[idx] = res;
				pending--;
				
				if (pending === 0) {
					resolve();
				}
			}, reject);
		});
	});
};