View helper gives error when upgrading from ember 1.7.0 to 1.10.0

This code worked in ember 1.7.0:

var ViewTemplateHelper = Ember.Handlebars.makeBoundHelper(function(templateString, options) {

  var dummy = Ember.View.extend({
    classNames: ['view-template'],
    template: Ember.Handlebars.compile(templateString)
  });

  var view = dummy.create();

  if (options && options.hash) {
    options.hash.content = template;
  }

  // Hack to prevent appendChild error
  if (options.data.view._state === 'inDOM') {
    options.data.view.rerender();
    options.data.view.renderToBuffer();
  }

  return Ember.Handlebars.helpers.view.call(this, view, options); // undefined is not a function
});

export
default ViewTemplateHelper;

But now in ember 1.10.0 is gives the undefined is not a function error.

What do I miss?