I'm not sure if it's intentional, they seem very useful to me and missing them is inconsistent & also not complying with docs
I guess its as simple as:
export type IfBooleanLiteral<T, Then = true, Else = false> =
IsBooleanLiteral<T> extends true ? Then : Else
export type IfStringLiteral<T, Then = true, Else = false> =
IsStringLiteral<T> extends true ? Then : Else
export type IfNumericLiteral<T, Then = true, Else = false> =
IsNumericLiteral<T> extends true ? Then : Else
Please let me know if you'd like PR and where you'd think it's best to place 'em.
sindresorhus / type-fest
A collection of essential TypeScript types
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