How to type function parameter to accept a class not the instance

[swift wind]

not possible

you can make X an abstract class though, so users won't be able to create an X in the first place

they could accidentally pass an incompatible property though

[swift wind]

to solve that you may be able to do protected abstract a: string. not sure whether that works though

ohhhh

[weak zodiac]

d.n_n.b#0

Playground Link

[swift wind]

!ts

[weak zodiac]

class X {}

class Y extends X {
  static staticName = 'name'
}

function func(arg: new (...args: any[]) => X){ // this
  console.log(Y.staticName)
}

func(Y) // pass
func(new Y()) // this should be error
//   ^^^^^^^
// Argument of type 'Y' is not assignable to parameter of type 'new (...args: any[]) => X'.
//   Type 'X' provides no match for the signature 'new (...args: any[]): X'.```

[swift wind]

like this?