null
If the validator is bound to be `null` then no validation occurs and attribute is not added to DOM. For every validator type different PR will be raised as discussed in https://github.com/angular/angular/pull/42378. Closes #42267. PR Close #42565
forwardRef
undefined
ErrorHandler#handleError()
my-app
app-root
The sources for this package are in the main Angular repo. Please file issues and pull requests against that repo.
Usage information and reference details can be found in Angular documentation.
License: MIT