import type { NevermoreOptions, Job, Strategy, Pipe, BackoffRetryOptions } from "../types";
export declare function isRetryOptions(options: NevermoreOptions): options is BackoffRetryOptions;
export type BackoffJob<J extends Job<unknown>> = (() => ReturnType<J>) & {
    jobToRetry: J;
    jobFailures: number;
};
export declare function createBackoffJob<J extends Job<unknown>>(jobToRetry: J): BackoffJob<J>;
export declare function createBackoffStrategy<J extends Job<unknown>>(options: BackoffRetryOptions, downstream: Strategy<BackoffJob<J>>): {
    launchJob(job: J): Promise<void>;
    launchesDone(): Promise<void>;
    next(): Promise<IteratorReturnResult<any> | {
        value: {
            job: J;
            status: "fulfilled";
            value: Awaited<ReturnType<J>>;
        } | {
            job: J;
            status: "rejected";
            reason: unknown;
        };
        done?: false | undefined;
    }>;
};
export declare function createRetryPipe(options: BackoffRetryOptions): Pipe;
//# sourceMappingURL=backoff.d.ts.map