import { Key, SuspensePromiseOptions } from './types.cjs';

type Sync = (...args: unknown[]) => unknown;
/**
 * @experimental This is experimental feature.
 */
declare class PromiseCache {
    private cache;
    private syncsMap;
    reset: (promiseKey?: Key) => void;
    clearError: (promiseKey?: Key) => void;
    suspend: <TData, TKey extends Key = Key>({ promiseKey, promiseFn, }: SuspensePromiseOptions<TData, TKey>) => TData;
    getData: (promiseKey: Key) => unknown;
    getError: (promiseKey: Key) => unknown;
    subscribe(promiseKey: Key, syncSubscriber: Sync): {
        unsubscribe: () => void;
    };
    unsubscribe(promiseKey: Key, syncSubscriber: Sync): void;
    private syncSubscribers;
}

export { PromiseCache };