export declare class RetryError extends Error {
    constructor(message: string);
}
export type RetryCallback<T> = (attempt: number) => Promise<T> | T;
export interface RetryOptions {
    /**
     * The number of attempts before throwing last error
     *
     * (Default is Infinity)
     */
    attempts?: number;
    /**
     * The millisecond delay between subsequent retry attempts
     *
     * (Default is 1000)
     */
    delay?: number;
    /**
     * A multiplier used to increase (or decrease) the delay for subsequent retry attempts.
     * This option can be used to implement exponential back-off strategies.
     *
     * (Default is 1.0)
     */
    multiplier?: number;
    /**
     * This option specifies a upper threshold for multiplied delay values. This option should be
     * set when attempt counts are high and where multipler values are greater than 1.0.
     *
     * (Default is Infinity)
     */
    maximumDelay?: number;
    /**
     * This option specifies a lower threshold for multiplied delay values. This option should be
     * set when attempt counts are high and where multipler values are less than 1.0.
     *
     * (Default is 0)
     */
    minimumDelay?: number;
}
export declare namespace Retry {
    /** Will repeatedly run the given callback until a value is successfully returned. The function will throw the last callback error if attempts exceed the configured threshold */
    function run<T>(callback: RetryCallback<T>, options?: RetryOptions): Promise<T>;
}