03312-easy-parameters
Easy
infer
tuple
built-in

Implement the built-in Parameters<T> generic without using it.

For example:

const foo = (arg1: string, arg2: number): void => {}

type FunctionParamsType = MyParameters<typeof foo> // [arg1: string, arg2: number]

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import type { Equal, Expect } from '@type-challenges/utils'

function foo(arg1: string, arg2: number): void {}
function bar(arg1: boolean, arg2: { a: 'A' }): void {}
function baz(): void {}

type cases = [
  Expect<Equal<MyParameters<typeof foo>, [string, number]>>,
  Expect<Equal<MyParameters<typeof bar>, [boolean, { a: 'A' }]>>,
  Expect<Equal<MyParameters<typeof baz>, []>>,
]