import { Awaitable } from '../Types';
/**
 * A function that returns true if the value is expired.
 * @argument value the value to evaluate.
 */
export type IExpiryPolicyDelegate<T> = (value?: T) => boolean;
export interface IAsyncCacheItem {
    getValueAsync<T>(): Promise<T>;
}
export interface ICache<TKey> {
    add<T>(key: TKey, value: Awaitable<T>, expiryPolicy: IExpiryPolicyDelegate<T>): void;
    addOrGetAsync<T>(key: TKey, factory: (key: TKey) => Awaitable<T>, expiryPolicy: IExpiryPolicyDelegate<T>): Promise<T>;
    addOrReplace<T>(key: TKey, value: Awaitable<T>, expiryPolicy: IExpiryPolicyDelegate<T>): void;
    cleanAsync(): Promise<void>;
    getAsync<T>(key: TKey): Promise<T>;
    tryGetAsync<T>(key: TKey): Promise<{
        success: boolean;
        value?: Promise<T>;
    }>;
    replace<T>(key: TKey, value: Awaitable<T>, expiryPolicy: IExpiryPolicyDelegate<T>): void;
}