/**
 * ExponentialTime.ts
 * Author: David de Regt
 * Copyright: Microsoft 2016
 *
 * Timer to be used for exponential backoff.  Integrates jitter so as to not slam all services at the same time after backoffs.
 */
export declare const DEFAULT_TIME_GROW_FACTOR = 2.718281828459045;
export declare const DEFAULT_TIME_JITTER = 0.11962656472;
export declare class ExponentialTime {
    private _initialTime;
    private _maxTime;
    private _growFactor;
    private _jitterFactor;
    private _currentTime;
    private _incrementCount;
    /**
     * @param initialTime  multiplier of exponent
     * @param maxTime      delays won't be greater than this
     * @param growFactor   base of exponent
     * @param jitterFactor
     */
    constructor(_initialTime: number, _maxTime: number, _growFactor?: number, _jitterFactor?: number);
    reset(): void;
    getTime(): number;
    getIncrementCount(): number;
    calculateNext(): number;
    /**
     * @return first call returns initialTime, next calls will return initialTime*growFactor^n + jitter
     */
    getTimeAndCalculateNext(): number;
}