import type { SnapshotEnvelope } from './snapshot.envelope';
export interface L1Options {
    max?: number;
    ttlMs?: number;
}
export declare class L1SnapshotCache {
    private readonly cache;
    constructor(opts?: L1Options);
    private key;
    get(userId: string, tenantId?: string): SnapshotEnvelope | undefined;
    set(env: SnapshotEnvelope): void;
    /** Evict one tenant entry, or ALL entries for a user when tenantId is omitted. */
    evict(userId: string, tenantId?: string): number;
    clear(): void;
}
//# sourceMappingURL=l1-cache.d.ts.map