Type "(string) => string" is incompatible with type "<T>(T) => T"

I’m not sure i doing it correctly but here it is

type Fn = <T>(value: T) => T

let fn: Fn = (s:string) => '2'

try

[ikabirov]

@Merciful12 is’t incorrect case. Without generic in function test you can call function with any parameter:

type Fn = <T>(value: T) => T

function test(fn: Fn) {
  fn(true)
}

test((s: string) => s)
test((s: number) => s)

[srg-kostyrko]

type Fn<T> = (value: T) => T

function test<T>(fn: Fn<T>) {}

test((s: string) => s)
test((s: number) => s)