import type { MemoryRecord, MemoryStatus } from './types.js';
export type MemoryStabilityBand = 'strong' | 'working' | 'fragile';
export declare function nextMemoryReviewAt(record: Pick<MemoryRecord, 'durability' | 'explicitness'>, fromMs?: number): string;
export declare function resolveMemoryStability(record: MemoryRecord, nowMs?: number): {
    score: number;
    band: MemoryStabilityBand;
    reviewAt: string;
    reviewDue: boolean;
    expired: boolean;
};
export declare function effectiveMemoryStatus(record: MemoryRecord, nowMs?: number): MemoryStatus;