/** Placeholder for a strategy that only allows jobs if there is a remaining slot in the current interval.
 * The interval is a moving window, and slots become available when historical job invocations become old enough
 */
import type { RateOptions, Job, Pipe, Strategy, NevermoreOptions } from "../types";
export declare function isRateOptions(options: NevermoreOptions): options is RateOptions;
export declare function createRateStrategy<J extends Job<unknown>>(options: RateOptions, downstream: Strategy<J>): {
    launchJob(job: J): Promise<void>;
    launchesDone(): Promise<void>;
    next: (...args: [] | [undefined]) => Promise<IteratorResult<import("../types").JobSettlement<J>, any>>;
};
export declare function createRatePipe(options: RateOptions): Pipe;
//# sourceMappingURL=rate.d.ts.map