Promise Async Each

promise-async-each.js

function each (condition, method, context, index) {
	index = index === undefined ? 0 : index;
	if (condition.call(context, index)) {
		return Promise.resolve().then(function () {
			return method.call(context, index);
        }).then(each.bind(null, condition, method, context, index+1));
	} else {
		return Promise.resolve();
	}
}

// console.log('before');
// each(function (i) { return i < 10; }, function (i) {
// 		console.log(i++);
// 		// throw 'oops';
// }).then(function () {
// 	console.log('actually after');
// }).catch(function (error) {
// 	console.log(error);
// });
// console.log('after but not');
// Promise.resolve().then(function () { console.log('random'); });