Type Alias AddParameters<T, TExtra>

AddParameters: (...args: [...Parameters<T>, ...TExtra]) => ReturnType<T>

Allows retyping of functions. Useful for calling functions with hidden parameters (for recursion).

function someFunc(someParam: string) {
	const isRecursiveCall: boolean = arguments[1] ?? false
	const self = someFunc as any as AddParameters<typeof someFunc, [typeof isRecursiveCall]>
	// no error
	self(someParam, true)
}

Type Parameters

T extends AnyFunction
TExtra extends any[] = [boolean]

Type declaration

- (...args: [...Parameters<T>, ...TExtra]): ReturnType<T>
- Parameters
  - ...args: [...Parameters<T>, ...TExtra]
  Returns ReturnType<T>