How to implement validation rules for ag-grid row edit

I currently have html table with inline editing that uses plain Angular Reactive Forms, including a lot of validation rules:

var formArray = new FormArray(this.items.map(createItemFormGroup));

createItemFormGroup(item){
   return new FormGroup({
        prop1: new FormControl(item.prop1, [Validators.required, Validators.min(1)])
        prop2:...
   })
}

Is there any example of how to integrate ag-grid with Angular validations? The requirement is, that I need to highlight invalid cell values. I don't necessarily need to use FormGroup…

I will probably use full row editing, so one way to go would be to create FormGroup only for row, that is being edited....

There are two ways of possible validation handling:

First: via ValueSetter function

and

Second: via custom cellEditor component

Example one

Example two

Async validation

Extended validation