import type { InitialUsageState, UsageManager, UsageMeasurement, UsageSample } from "./types.js";
import type { ClockTime } from "../clock/clock.js";
declare class DevUsageMeasurement implements UsageMeasurement {
    readonly id: string;
    private startedAt;
    private _pauses;
    private _endedAt;
    constructor(id: string, startedAt?: ClockTime);
    stop(): void;
    sample(): UsageSample;
    registerPause(pauseId: string, start: ClockTime, end?: ClockTime): void;
}
export declare class DevUsageManager implements UsageManager {
    private _firstMeasurement?;
    private _currentMeasurements;
    private _pauses;
    private _initialState;
    disable(): void;
    flush(): Promise<void>;
    reset(): void;
    setInitialState(state: InitialUsageState): void;
    getInitialState(): InitialUsageState;
    sample(): UsageSample | undefined;
    start(): DevUsageMeasurement;
    stop(measurement: DevUsageMeasurement): UsageSample;
    pauseAsync<T>(cb: () => Promise<T>): Promise<T>;
}
export {};