AngularJS Directive create the tree. How to pass an object in ng-repeat?

Good day, I decided to write a Directive to display a tree but the experience in writing directives is not a lot, so it was decided to apply to the search.
The solution was found immediately: https://habrahabr.ru/sandbox/75566/

If to write so:
html:
ng-repeat="item in items"
js:
$scope.items = [/*items*/]
then it works,

and if so:
html:
ng-repeat="item in someObj.items"
js:

$scope.someObj = {
items: [/*objects*/]
};

Browser hangs tightly.

Here's the working example:
https://jsfiddle.net/xdevand/zvm7zwu1/