an implementation of allResolved for angularJS

promise-all.js

// NOTE: $q.all will reject if one of the promises is bad, so we can't use it here
// and have instead replicateed $Q.allResolved
function allResolved(promises) {
    var deferred = $q.defer(),  // our aggregate promise
        counter = 0,            // know when to resolve our deferred
        results = [];           // where we collect the ordered results of each promise

    angular.forEach(promises, function(promise, key) {
        counter++;
        // might be a value, wrap it up to be safe
        $q.when(promise).then(function(value) {             // success
            if (results.hasOwnProperty(key)) return;
            results[key] = value;
            if (!(--counter)) deferred.resolve(results);
        }, function(reason) {                               // fail
            if (results.hasOwnProperty(key)) return;
            results[key] = reason.data; // discard the wrapper
            if (!(--counter)) deferred.resolve(results);
        });
    });

    if (counter === 0) {
        deferred.resolve(results);
    }

    return deferred.promise;
}