fix(common): update KeyOf type to support symbol keys

akeldamas · akeldamas · commit f53f14e955fd · 2025-03-26T23:46:40.000+01:00
This change extends the KeyOf type to support symbol keys when keyof T extends never. This allows the config service to properly handle configurations that use symbols as keys. Closes #1996
diff --git a/lib/config.service.ts b/lib/config.service.ts
@@ -36,7 +36,7 @@ export interface ConfigGetOptions {
   infer: true;
 }
 
-type KeyOf<T> = keyof T extends never ? string : keyof T;
+type KeyOf<T> = keyof T extends never ? string | symbol : keyof T;
 
 /**
  * @publicApi

Original file line number	Diff line number	Diff line change
`@@ -36,7 +36,7 @@ export interface ConfigGetOptions {`
`36`	`36`	`infer: true;`
`37`	`37`	`}`
`38`	`38`
`39`		`-type KeyOf<T> = keyof T extends never ? string : keyof T;`
	`39`	`+type KeyOf<T> = keyof T extends never ? string \| symbol : keyof T;`
`40`	`40`
`41`	`41`	`/**`
`42`	`42`	`* @publicApi`