export type TimingMetric = {
    count?: number;
    durationMs: number;
    inputSize?: number;
    outputSize?: number;
    phase: string;
};
export declare class TimingCollector {
    readonly label: string;
    readonly enabled: boolean;
    readonly metrics: TimingMetric[];
    readonly startedAt: number;
    constructor(label: string, enabled?: boolean);
    add(metric: TimingMetric): void;
    time<T>(phase: string, task: () => Promise<T>, details?: Omit<TimingMetric, "durationMs" | "phase">): Promise<T>;
    timeSync<T>(phase: string, task: () => T, details?: Omit<TimingMetric, "durationMs" | "phase">): T;
    log(extra?: Record<string, unknown>): void;
}
export declare function isTimingEnabled(): boolean;