Improve typing of CallbackList#forEach

diff --git a/wcfsetup/install/files/ts/WoltLabSuite/Core/CallbackList.ts b/wcfsetup/install/files/ts/WoltLabSuite/Core/CallbackList.ts
index 9061183a5e49ee2a8cb17f7ef2d271372fb87cb7..988d2b8242d13969af2b89f5e5cdabd4f617fa1f 100644 (file)
--- a/wcfsetup/install/files/ts/WoltLabSuite/Core/CallbackList.ts
+++ b/wcfsetup/install/files/ts/WoltLabSuite/Core/CallbackList.ts
@@ -36,7 +36,7 @@ class CallbackList {
   /**
    * Invokes callback function on each registered callback.
    */
-  forEach(identifier: string | null, callback: Callback): void {
+  forEach(identifier: string | null, callback: (cb: Callback) => unknown): void {
     if (identifier === null) {
       this._callbacks.forEach((callbacks, identifier) => {
         callbacks.forEach(callback);