Make typescript parameter keyof K and typeof FormGroup

Asked Aug 27 '21 at 07:00

Active Nov 01 '22 at 02:10

Viewed 218 times

I want to pass in an object which is key of a class K and has the type of or extends FormGroup like:

  public async myMethod<T, K>(
    ...
    formGroupName: keyof K & typeof FormGroup) { }

So wenn I call it then, the keyof K seems to work as I only get K members, but also others, i just want to receive from type of FormGroup!

This would be the function call:

this.service.myMethod<ComponentA, ComponentB>(
  ...
  'form' // any member of ComponentB, which is of type formGroup
);

Thank you

edited Aug 27 '21 at 07:43

asked Aug 27 '21 at 07:00

jo-chris

`keyof` produces a string or numeric literal union. How can this intersect with `FormGroup`? Can you add an example of how you want to call `myMethod` – hansmaad Aug 27 '21 at 07:22
i would like to receive only properties of type FormGroup. i would then pass formGroupname: 'form' – jo-chris Aug 27 '21 at 07:26
Can you please add a complete function call to the question, as an example – hansmaad Aug 27 '21 at 07:29
added an implementation – jo-chris Aug 27 '21 at 07:54
2

Ok, now it's clear :) Here you go: https://stackoverflow.com/questions/49752151/typescript-keyof-returning-specific-type – hansmaad Aug 27 '21 at 08:15

0 Answers0