Zestaw mapy JavaScript Ketetrze
const callbackMap = new Map<string, PushEventCallback>([
["addComment", addCommentCallback],
["commentModified", editCommentCallback]
]);
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map#:~:text=Cloning%20and%20merging%20Maps
Ashamed Antelope