export declare class ExponentialBackoff {
    private initialDelay;
    private maxDelay;
    private multiplier;
    private delay;
    /**
     * @param maxDelay Maximum delay in seconds
     * @param initialDelay Initial delay in seconds (default: 2)
     * @param multiplier Multiplier for each subsequent delay (default: 2)
     */
    constructor(maxDelay: number, initialDelay?: number, multiplier?: number);
    /** Returns the next delay in milliseconds */
    call(): number;
}