feat(typescript-types): Add isKeyOf<T,K>

2025-07-14 15:39:53 +02:00
parent a7bc60fa69
commit bb706e7780
3 changed files with 42 additions and 5 deletions
--- a/packages/typescript-types/src/is-key-of.ts
+++ b/packages/typescript-types/src/is-key-of.ts
@@ -0,0 +1,4 @@
+import type { If } from './if.js'
+import type { IsNever } from './is-never.js'
+
+export type IsKeyOf<T, K> = If<IsNever<T>, false, If<IsNever<K>, false, K extends keyof T ? true : false>>