🚀 feature request

Relevant Package

@angular/forms

Description

Currently get on AbstractControl returns an AbstractControl. This works as intended but dosen't play well with strictTemplates and deeply nested forms.

Describe the solution you'd like

add the methosd getGroup getControl getArray which will run the get function but then cast the type and do a runtime check to ensure it's the correct runtime type also.

Describe alternatives you've considered

Put a method in your component class, but this isn't ergonomic

asControl(c: AbstractControl): FormControl { return c as FormControl }

Happy to submit a patch