export interface ReceiptOptions {
    /** Window in days. Default 7. */
    sinceDays?: number;
    /** Output format. */
    format?: "plain" | "json";
    /** Override session-log root (testing). */
    rootDir?: string;
}
interface ToolStat {
    calls: number;
    resultBytes: number;
}
export interface ReceiptStats {
    sessions: number;
    windowDays: number;
    inputTokens: number;
    cacheReadTokens: number;
    cacheCreationTokens: number;
    outputTokens: number;
    /** Sum of bytes returned by tool_result blocks. */
    toolResultBytes: number;
    /** Per-tool aggregates, sorted by resultBytes desc. */
    byTool: Array<{
        name: string;
    } & ToolStat>;
    /** Worst single tool call (largest tool_result payload). */
    worstCall: {
        tool: string;
        bytes: number;
        sessionFile: string;
    } | null;
}
export interface CostEstimate {
    /** Sonnet ratecard: $3/M input, $15/M output. */
    sonnetUsd: number;
    /** Opus ratecard: $15/M input, $75/M output. */
    opusUsd: number;
    projectedYearlyUsd: number;
}
/**
 * Walk the Claude Code session-log root and return every `.jsonl` file
 * modified within the last `sinceDays` days. Cursor logs are not yet
 * standardized in a known location; deferred.
 */
export declare function findSessionLogs(opts?: ReceiptOptions): string[];
/**
 * Build the receipt from all session logs in the window. Pure aggregation;
 * no I/O outside `findSessionLogs` and `readFileSync`.
 */
export declare function generateReceipt(opts?: ReceiptOptions): ReceiptStats;
export declare function estimateCost(stats: ReceiptStats): CostEstimate;
/**
 * Render the receipt for the terminal. Plain ASCII, no color — meant
 * to be screenshotable without garbled escape codes.
 */
export declare function renderReceipt(stats: ReceiptStats, cost: CostEstimate): string;
/** Convenience wrapper for the CLI. */
export declare function runReceipt(opts?: ReceiptOptions): string;
export {};