keys

function WeakValueMap<K, V>.keys(): IterableIterator<K>

Returns an iterator of keys for each entry in the map. Only includes keys whose values have not been garbage collected.

Example

type User = { id: string; name: string };

const user1: User = { id: "user-1", name: "Alice" };
const user2: User = { id: "user-2", name: "Bob" };

const cache = new WeakValueMap<string, User>();
cache.set("user-1", user1);
cache.set("user-2", user2);

for (const key of cache.keys()) {
    console.log(key);
}
// "user-1"
// "user-2"