fix IE8 support for catch and finally in angularjs $q service (http://www.antonydenyer.co.uk/blog/2014/08/22/angularjs-decorator-to-support-ie8-catch/)

qDecorator.js

(function () {
    "use strict";

    app.config(function ($provide) {
        $provide.decorator('$q', function ($delegate) {
            // http://dorp.io/blog/extending-q-promises.html
            function decoratePromise(promise) {
                promise._then = promise.then;
                promise.then = function (thenFn, errFn, notifyFn) {
                    var p = promise._then(thenFn, errFn, notifyFn);
                    return decoratePromise(p);
                };

                promise.error = promise["catch"];
                promise["catch"] = function () {
                    throw "Do not use catch as it's not supported by IE8, use error instead";
                };


                promise.always = promise["finally"];
                promise["finally"] = function () {
                    throw "Do not use finally as it's not supported by IE8, use always instead";
                };


                return promise;
            }

            var defer = $delegate.defer,
                when = $delegate.when,
                reject = $delegate.reject,
                all = $delegate.all;
            $delegate.defer = function () {
                var deferred = defer();
                decoratePromise(deferred.promise);
                return deferred;
            };
            $delegate.when = function () {
                var p = when.apply(this, arguments);
                return decoratePromise(p);
            };
            $delegate.reject = function () {
                var p = reject.apply(this, arguments);
                return decoratePromise(p);
            };
            $delegate.all = function () {
                var p = all.apply(this, arguments);
                return decoratePromise(p);
            };

            return $delegate;
        });
    });

}());

Thnx!