patmigliaccio.com/async-fishing - 12/11/16

async-fishing-all-fulfilled.js

function allFulfilled(answerPs) {
	let countDown = answerPs.length;
	const answers = [];
	if (countDown === 0) { return answers; }
	const deferredResult = Q.defer();
	answerPs.forEach(function(answerP, index) {
		Q(answerP).when(function(answer) {
			answers[index] = answer;
			if (--countDown === 0) { deferredResult.resolve(answers); }
		}, function(err) {
			deferredResult.resolve(Q.reject(err));
		});
	});
	return deferredResult.promise;
}