/**
 * Ported from https://github.com/zio/zio/blob/master/core/shared/src/main/scala/zio/Clock.scala
 *
 * Copyright 2020 Michael Arnaldi and the Matechs Garage Contributors.
 */
import type { HasTag } from "../../Has";
import * as T from "../Task/_core";
/**
 * Clock Model
 */
export declare const URI: unique symbol;
export interface Clock {
   readonly _tag: typeof URI;
   readonly currentTime: T.IO<number>;
   readonly sleep: (ms: number) => T.IO<void>;
}
/**
 * Has Clock
 */
export declare const HasClock: import("../../Has").Tag<Clock>;
export declare type HasClock = HasTag<typeof HasClock>;
/**
 * Live clock implementation
 */
export declare const LiveClock: () => Clock;
/**
 * Proxy Clock Implementation
 */
export declare const ProxyClock: (currentTime: T.IO<number>, sleep: (ms: number) => T.IO<void>) => Clock;
/**
 * Get the current time in ms since epoch
 */
export declare const currentTime: T.Task<import("../../Has").Has<Clock>, never, number>;
/**
 * Sleeps for the provided amount of ms
 */
export declare const sleep: (ms: number) => T.Task<import("../../Has").Has<Clock>, never, void>;
/**
 * Access clock from environment
 */
export declare const withClockM: <R, E, B>(
   f: (a: Clock) => T.Task<R, E, B>
) => T.Task<R & import("../../Has").Has<Clock>, E, B>;
/**
 * Access clock from environment
 */
export declare const withClock: <B>(f: (a: Clock) => B) => T.Task<import("../../Has").Has<Clock>, never, B>;
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