MapValues<T>

Overview

Extracts the value type from a given map type T.

Syntax

type MapValues<T extends Map<unknown, unknown>> =
  T extends Map<unknown, infer V> ? V : never;

• T: The map type from which to extract the value type.

Example

type T0 = MapValues<Map<never, string>>; // string
type T1 = MapValues<Map<never, '1' | '2' | '3'>>; // '1' | '2' | '3'
type T2 = MapValues<Map<never, { readonly key: string }>>; // { readonly key: string }
type T3 = MapValues<Map<never, never>>; // never