import type { IElicitationStore } from '../interfaces/elicitation-store.interface';
import type { ElicitationRecord, ElicitationResultRecord } from '../interfaces/elicitation.interface';
/**
 * In-memory `IElicitationStore`. Suitable for development and single-instance
 * deployments. For multi-instance / multi-replica setups, plug in a
 * Redis-backed store via `storeConfiguration.type = 'custom'`.
 */
export declare class MemoryElicitationStore implements IElicitationStore {
    private readonly logger;
    private readonly elicitations;
    private readonly results;
    /** `${userId}:${type}` → most recent matching elicitationId. */
    private readonly userTypeIndex;
    storeElicitation(elicitation: ElicitationRecord): Promise<void>;
    getElicitation(elicitationId: string): Promise<ElicitationRecord | undefined>;
    updateElicitation(elicitationId: string, updates: Partial<ElicitationRecord>): Promise<void>;
    storeResult(result: ElicitationResultRecord): Promise<void>;
    getResult(elicitationId: string): Promise<ElicitationResultRecord | undefined>;
    findResultByUserAndType(userId: string, type: string): Promise<ElicitationResultRecord | undefined>;
    removeElicitation(elicitationId: string): Promise<void>;
    getElicitationsBySession(sessionId: string): Promise<ElicitationRecord[]>;
    cleanupExpired(): Promise<number>;
    private indexUserType;
}
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