AngularJS auto $setPristine() on reset

reset.js

angular.module("myApp").directive("form", function(){
    return {
        require: "^form",
        link: function(scope, elem, attr, ctrl){
            elem.on("reset", function(){
                ctrl.$setPristine();
            });
        }
    };
});

this directive triggers $setPristine() when the form receives reset event (via <input type="reset">, etc)