intercept scope prototype 1.2.x

function interceptFunction (object, fnName, options) {
    var noop = function () {};
    var fnToWrap = object[fnName];
    var before = options.before || noop;
    var after = options.after || noop;

    object[fnName] = function () {
        before.apply(this, arguments);
        var result = fnToWrap.apply(this, arguments);
        after.apply(this, arguments);
        return result
    }
}
var $scope = angular.element(document.querySelector("[ng-app]")).scope();
var Scope = $scope.$root.constructor;
interceptFunction(Scope.prototype, "$digest", {
    before: function () {
        console.log(this);
    }
});