Example 3-8. Running code after multiple operations have finished, regardless of their outcome

function settled(promises) {
	var alwaysFulfilled = promises.map(function (p) {
		return p.then(
			function onFulfilled(value) {
				return { state: 'fulfilled', value: value };
			},
			function onRejected(reason) {
				return { state: 'rejected', reason: reason };
			}
		);
	});
	return Promise.all(alwaysFulfilled);
}

// Update status message once all requests finish
settled(requests).then(function (outcomes) {
	var count = 0;
	outcomes.forEach(function (outcome) {
		if (outcome.state == 'fulfilled') count++;
	});
	console.log(count + ' out of ' + outcomes.length + ' balances were updated');
});

// Console output (varies based on requests):
// 3 out of 3 balances were updated