export interface SpilloverRecord {
    id: string;
    data: string;
    mimeType: string;
    sizeBytes: number;
    createdAt: number;
    expiresAt: number;
    /** Session that produced the payload. Absent for stateless writes. */
    sessionId?: string;
}
export interface SpilloverStore {
    save(id: string, data: string, mimeType: string, ttlSeconds: number, sessionId?: string): Promise<SpilloverRecord>;
    get(id: string): Promise<SpilloverRecord | undefined>;
    delete(id: string): Promise<boolean>;
    cleanup(): Promise<number>;
    dispose(): Promise<void>;
    /** Byte cap for stored payloads. Absent on custom stores. */
    getMaxSizeBytes?(): number;
}
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