import { Millisecond, Nanosecond } from '../types';
import { Hrtime } from '../types.internal';
import { TimeUnit } from './TimeUnit';
export declare class TimeTool {
    static convert(time: number, from: TimeUnit, to: TimeUnit): number;
    static ms2ns: (ms: Millisecond) => Nanosecond;
    static hrtime2ns: (hrtime: Hrtime) => Nanosecond;
    static sleep(ns: Nanosecond): void;
}
export { TimeTool as Time };