/**
 * In-memory reference implementation of {@link LiveActivityTokenRegistry}.
 *
 * Suitable for tests, single-process servers, and as a template for a real
 * database-backed store. It performs no I/O and resolves immediately.
 *
 * @packageDocumentation
 */
import type { LiveActivityTokenRegistry, PushToStartTokenRecord, ActivityTokenRecord } from './types.js';
/**
 * A process-local, non-persistent {@link LiveActivityTokenRegistry}.
 *
 * @remarks
 * Data is lost on restart and is **not** shared across instances. For
 * production, implement {@link LiveActivityTokenRegistry} against your database
 * (the method shapes are intentionally trivial to map to upsert/delete queries).
 */
export declare class InMemoryTokenRegistry implements LiveActivityTokenRegistry {
    /** attributesType → push-to-start record. */
    private readonly pushToStart;
    /** activityId → per-activity update token record. */
    private readonly activity;
    storePushToStartToken(record: PushToStartTokenRecord): Promise<void>;
    getPushToStartToken(attributesType: string): Promise<PushToStartTokenRecord | undefined>;
    invalidatePushToStartToken(attributesType: string): Promise<void>;
    storeActivityToken(record: ActivityTokenRecord): Promise<void>;
    getActivityToken(activityId: string): Promise<ActivityTokenRecord | undefined>;
    rotateActivityToken(activityId: string, token: string): Promise<void>;
    invalidateActivityToken(activityId: string): Promise<void>;
    listActivityTokens(): Promise<ActivityTokenRecord[]>;
}
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