Why do I have to specify parameter names in a TS function type?

Question

I am using typescript to write some function and this is the one that TS accepts:

export const useSomething = () => {
    const useStorage = <         


        

Answer 1

Following type alias can be used to avoid explicit parameter names:

type F = (...args: A) => R

const example1: F<[number, boolean], number> = (x, y) => y ? x : x + 1;
const example2: F<[number], string> = String;