/*!
 *
 * Copyright 2017 - acrazing
 *
 * @author acrazing joking.young@gmail.com
 * @since 2017-11-25 14:10:30
 * @version 1.0.0
 * @desc sleep.ts
 */

export interface Timer extends Promise<void> {
    clear(): void;
}

export function sleep(time: number): Timer {
    let clear = (): void => void 0
    const timer = new Promise((resolve, reject) => {
        let state = 'pending'
        const handle = setTimeout(() => {
            if (state === 'pending') {
                state = 'fulfilled'
                resolve()
            }
        }, time)
        clear = () => {
            if (state === 'pending') {
                state = 'rejected'
                clearTimeout(handle)
                reject()
            }
        }
    }) as Timer
    timer.clear = clear
    return timer
}