Type Alias IsAnyOrNever<T, $O>

IsAnyOrNever: IsNever<T, { $else: IsAny<T, $O>; $then: $O["$then"] }>

🎭 predicate 🔢 customize 🩳 shortcut

Validate if T is either exactly any or exactly never.

Type Parameters

T
$O extends $Selection.Options = Predicate

Example

type R = IsAnyOrNever<any> // $Then
type R = IsAnyOrNever<never> // $Then

type R = IsAnyOrNever<1> // $Else
type R = IsAnyOrNever<unknown> // $Else

type R = IsAnyOrNever<never, $SelectionPredicate> // true
type R = IsAnyOrNever<'a', $SelectionPredicate> // false