import type { SessionStats } from '../session.js';
import type { Insight } from '../detectors/index.js';
export interface HistoryEntry {
    date: string;
    totalCostUsd: number;
    last7DaysCostUsd: number;
    sessionsCount: number;
    filesCount: number;
    topLeakSavingsUsd: number;
    topLeakTitle: string;
    detectorHits: number;
}
export declare function readHistory(): HistoryEntry[];
export declare function appendHistory(allStats: SessionStats[], insights: Insight[], filesCount: number): void;
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