fix: update target name to be a valid typescript 5 decorator

CHANGELOG.md

@@ -11,7 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 ### Fixed
-property injection tagged as @optional no longer overrides default values with `undefined`. 
+property injection tagged as @optional no longer overrides default values with `undefined`.
+Updated `targetName` to be a valid `typescript@5` decorator.
 
 ## [6.0.2]
 

src/annotation/target_name.ts

@@ -1,12 +1,16 @@
-import * as METADATA_KEY from '../constants/metadata_keys';
-import { Metadata } from '../planning/metadata';
-import { tagParameter, DecoratorTarget } from './decorator_utils';
+import * as METADATA_KEY from "../constants/metadata_keys";
+import { Metadata } from "../planning/metadata";
+import { tagParameter, DecoratorTarget } from "./decorator_utils";
 
 function targetName(name: string) {
-  return function (target: DecoratorTarget, targetKey: string, index: number) {
+  return function (
+    target: DecoratorTarget,
+    targetKey: string | undefined,
+    index: number
+  ) {
     const metadata = new Metadata(METADATA_KEY.NAME_TAG, name);
     tagParameter(target, targetKey, index, metadata);
   };
 }
 
-export { targetName };
+export { targetName };