Description

From what I understand, T | unknown and T | any resolve to just unknown and any respectively, so I don't think they're particularly useful.

However maybe it's still useful as suggested type documentation, because such types would still appear as X | unknown in some cases.

Thoughts?

Fail

type MaybeNumber = number | unknown;

function isNumber(value: number | any): value is number {
	return typeof value === 'number';
}

Pass

type MaybeNumber = unknown;

function isNumber(value: any): value is number {
	return typeof value === 'number';
}