Type alias IsLiteral<T, Then, Else>

Validate if specified type is a scalar literal.

🎭 predicate

Example

type R = IsLiteral<string> // false
type R = IsLiteral<number> // false
type R = IsLiteral<boolean> // false
type R = IsLiteral<bigint> // false
type R = IsLiteral<symbol> // false

type R = IsLiteral<'a'> // true
type R = IsLiteral<1> // true
type R = IsLiteral<true> // true
type R = IsLiteral<1n> // true
type R = IsLiteral<typeof someSymbol> // true
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