/**
 * Notifies all caches to delete data at the specified key.
 * @param key the key to delete
 * @returns A promise that resolves as soon as the del notification is sent. Since regional caches are
 *  eventually consisten, this may return before every cache is updated.
 */
export declare function del(key: string): Promise<boolean>;
/**
 * Notifies all regional caches to purge keys with the specified tag.
 * @param tag the tag to purge
 * @returns A promise that resolves as soon as the purge notification is sent. Since regional caches are
 *  eventually consisten, this may return before every cache is updated.
 */
export declare function purgeTag(tag: string): Promise<boolean>;
declare const _default: {
    del: typeof del;
    purgeTag: typeof purgeTag;
};
export default _default;
