import type { CostTrackerOptions, RunCostSummary, StepCostRecord } from './types.js';
export declare class CostTracker {
    private readonly usageFilePath;
    private readonly startedSteps;
    constructor(options?: CostTrackerOptions);
    stepStarted(runId: string, stepName: string, agent: string, cli: string): void;
    stepCompleted(runId: string, stepName: string, _exitCode: number): StepCostRecord;
    getRunSummary(runId: string): RunCostSummary;
    private appendRecord;
    private getStepKey;
    private readRecords;
}
//# sourceMappingURL=tracker.d.ts.map