import { type CredentialCooldownIdentity, type SessionAffinityKeyDeriver, type SessionAffinityEntry, type SessionAffinityIdentity, type SessionAffinityStore } from './SessionAffinityStore';
export interface InMemorySessionAffinityStoreOptions {
    secret?: string | Uint8Array;
    keyDeriver?: SessionAffinityKeyDeriver;
    ttlMs?: number;
    now?: () => Date;
}
export declare class InMemorySessionAffinityStore implements SessionAffinityStore {
    private readonly affinity;
    private readonly cooldowns;
    private readonly keyDeriver;
    private readonly ttlMs;
    private readonly now;
    constructor(options?: InMemorySessionAffinityStoreOptions);
    affinityKey(input: SessionAffinityIdentity): string;
    cooldownKey(input: CredentialCooldownIdentity): string;
    get(input: SessionAffinityIdentity): Promise<SessionAffinityEntry | undefined>;
    set(input: SessionAffinityEntry): Promise<void>;
    delete(input: SessionAffinityIdentity): Promise<void>;
    getCooldown(input: CredentialCooldownIdentity): Promise<Date | undefined>;
    setCooldown(input: CredentialCooldownIdentity & {
        until: Date;
    }): Promise<void>;
    debugKeys(): Iterable<string>;
    debugAffinityKey(input: SessionAffinityIdentity): string;
}