type BackoffParams = {
    /** The number of milliseconds before starting the first retry. Default is 500 */
    minTimeout?: number;
    /** The maximum number of milliseconds between two retries. Default is Infinity */
    maxTimeout?: number;
    /** The exponential factor to use. Default is 2. */
    factor?: number;
    /** The current attempt */
    attempt: number;
};
export declare function backoff(params: BackoffParams): number;
export {};
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