import type { IKeyedStorage, IKeyedStorageSync } from '../storage/types.js';
import type { ILazyPromiseExtension } from './types.js';
export interface ICachedLazyPromiseExtension<T, TStorage extends IKeyedStorage<T> | IKeyedStorageSync<T>> {
    readonly cache: TStorage;
    /** Resets the current value to undefined and cleans up the cache. */
    resetWithCache(): void;
    /** Sets the current value and updates the cache. */
    setCachedInstance(value: T | undefined): T | undefined;
}
export declare function createCacheExtension<T, TStorage extends IKeyedStorage<T> | IKeyedStorageSync<T>>(storage: TStorage): ILazyPromiseExtension<T, ICachedLazyPromiseExtension<T, TStorage>>;