This reverts commit e3518967ad705b133ee21eedcf9546b5cb2e817e. This PR accidentaly introduces a breaking change: https://github.com/angular/angular/pull/23668#discussion_r186265055
This reverts commit e3518967ad705b133ee21eedcf9546b5cb2e817e. This PR accidentaly introduces a breaking change: https://github.com/angular/angular/pull/23668#discussion_r186265055