import type { BucketedUserConfig, DVCLogger } from '@devcycle/types';
import { DVCStorage } from './types';
import { DVCPopulatedUser } from './User';
export declare class CacheStore {
    store: DVCStorage;
    logger: DVCLogger;
    private configCacheTTL;
    constructor(storage: DVCStorage, logger: DVCLogger, configCacheTTL?: number);
    private getConfigKey;
    private getConfigExpiryKey;
    private loadConfigExpiryDate;
    saveConfig(data: BucketedUserConfig, user: DVCPopulatedUser): Promise<void>;
    private isBucketedUserConfig;
    loadConfig(user: DVCPopulatedUser): Promise<BucketedUserConfig | null>;
    saveAnonUserId(userId: string): Promise<void>;
    loadAnonUserId(): Promise<string | undefined>;
    removeAnonUserId(): Promise<void>;
    migrateLegacyConfigs(): Promise<void>;
    migrateLegacyConfigType(legacyKey: string, isAnonymous: boolean): Promise<void>;
    /**
     * Clean up expired config entries from storage.
     * This removes configs for any user that have passed their expiry date.
     */
    cleanupExpiredConfigs(): Promise<void>;
}
export default CacheStore;