q-config.js

angular.module('myApp').config(function($provide) {
  $provide.decorator('$q', function($delegate) {
    // Extend promises with non-returning handlers
    function decoratePromise(promise) {
      promise._then = promise.then;
      promise.then = function(thenFn, errFn, notifyFn) {
        var p = promise._then(thenFn, errFn, notifyFn);
        return decoratePromise(p);
      };

      promise.success = function (fn) {
        promise.then(function (value) {
          fn(value);
        });
        return promise;
      };
      promise.error = function (fn) {
        promise.then(null, function (value) {
          fn(value);
        });
        return promise;
      };
      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;
  });
});