import type { TokenSaveCategory } from "./filters.js";
export interface TokenSaveRecord {
    timestamp: string;
    projectPath: string;
    command: string;
    category: TokenSaveCategory;
    mode: "filtered" | "passthrough";
    inputTokens: number;
    outputTokens: number;
    savedTokens: number;
    savingsPct: number;
    elapsedMs?: number;
    isError: boolean;
    rawRecoveryPath?: string;
}
export interface TokenSaveRecordInput extends Omit<TokenSaveRecord, "timestamp"> {
}
export declare class TokenSaveTracker {
    private readonly dataDir;
    private readonly historyFile;
    private records;
    constructor(dataDir: string, historyFile?: string);
    add(record: TokenSaveRecordInput): TokenSaveRecord;
    formatSummary(limit?: number): string;
    formatHistory(limit?: number): string;
    private persist;
}