//#region src/ops/retrier.d.ts
/** Options for configuring a {@link BackoffPolicy}. */
interface BackoffPolicyOptions {
  /** Initial delay in milliseconds; defaults to 1000. */
  initial?: number;
  /** Maximum delay in milliseconds; defaults to 60000. */
  maximum?: number;
  /**
   * Factor by which the delay is multiplied after each retry. The value must
   * be greater or equal to 1. If not, it defaults to 2.
   */
  factor?: number;
}
declare const rand: {
  int(n: number): number;
};
/**
 * BackoffPolicy implements an exponential backoff policy. The delay between
 * retries is randomly computed between 0 and the "exponential delay" as
 * recommended in [Exponential Backoff And Jitter]. The retry delay starts from
 * initial and grows exponentially by factor at every retry. The maximum retry
 * delay is capped by maximum.
 *
 * There is no parameter to limit the number of retries. This is intended as
 * such logic should be implemented upstream (e.g. in a Retrier).
 *
 * [Exponential Backoff And Jitter]: https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/
 */
declare class BackoffPolicy {
  /** Initial delay in milliseconds. */
  readonly initial: number;
  /** Maximum delay in milliseconds. */
  readonly maximum: number;
  /** Factor by which the delay is multiplied after each retry. */
  readonly factor: number;
  private current;
  constructor(options?: BackoffPolicyOptions);
  /** Returns a random delay in [0, current] and grows the current delay. */
  delay(): number;
}
/** Retrier defines a retry behavior. */
interface Retrier {
  /**
   * Returns the delay in milliseconds before the next retry, or undefined if
   * the error is not retriable. Implementations should assume that the given
   * error is never undefined.
   */
  isRetriable(err: Error): number | undefined;
}
/**
 * Returns a Retrier that retries based on the isRetriable predicate and relies
 * on an internal backoff policy to decide how long to wait between retries.
 *
 * Important: the retrier has its own backoff policy which cannot be trivially
 * reset by design. Users who need to reset the backoff policy should rather
 * create a new retrier.
 */
declare function retryOn(options: BackoffPolicyOptions, isRetriable: (err: Error) => boolean): Retrier;
//#endregion
export { BackoffPolicy, BackoffPolicyOptions, Retrier, rand, retryOn };
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