import type { MemoryBlockScope, PersistentMemoryBlock, PersistentMemoryStore } from './types.js';
export declare class TieredPersistentMemoryStore implements PersistentMemoryStore {
    private readonly cache;
    private readonly durable;
    constructor(cache: PersistentMemoryStore, durable: PersistentMemoryStore);
    loadBlock(scope: MemoryBlockScope, owner: string, key: string): Promise<PersistentMemoryBlock | null>;
    saveBlock(block: PersistentMemoryBlock, owner: string): Promise<void>;
    deleteBlock(scope: MemoryBlockScope, owner: string, key: string): Promise<void>;
    listBlocks(scope: MemoryBlockScope, owner: string): Promise<string[]>;
}