feat(typescript-types): Remove optionality of keys in Assign

2025-07-15 08:10:24 +02:00
parent eac7768bfb
commit 9700b7d46d
2 changed files with 36 additions and 13 deletions
--- a/packages/typescript-types/src/assign.ts
+++ b/packages/typescript-types/src/assign.ts
@@ -1,9 +1,15 @@
 import type { OptionalKeysOf } from './optional-keys-of.js'

+type GetNonOptionalValueAt<Obj, Key, Default> = Key extends keyof Obj
+	? undefined extends Obj[Key]
+		? Default
+		: Obj[Key]
+	: Default
+
 export type Assign<
 	Shape extends object,
 	Defaults extends Pick<Required<Shape>, OptionalKeysOf<Shape>>,
 	Obj extends Shape
 > = {
-	[K in keyof Shape]: K extends keyof Obj ? Obj[K] : K extends keyof Defaults ? Defaults[K] : never
+	[K in keyof Shape]-?: GetNonOptionalValueAt<Obj, K, K extends keyof Defaults ? Defaults[K] : never>
 }