export default class ExpiryMap<K, V> extends Map<K, V> {
    private readonly mExpiryMS;
    private mExpiryQueue;
    private mNextExpiry;
    constructor(aExpiryMS: number, aEntries?: Iterable<readonly [K, V]>);
    private AddKeyToQueue;
    private PruneStale;
    clear(): void;
    set(key: K, value: V): this;
}