import { ConnectionOptions } from 'nats';
import { JobDef, Events } from './types';
import EventEmitter from 'eventemitter3';
/**
 * Call `start` to begin processing jobs based on def. To
 * gracefully shutdown call `stop` method.
 */
export declare const jobProcessor: (opts?: ConnectionOptions) => Promise<{
    /**
     * Call perform for each message received on the stream.
     */
    start: (def: JobDef) => {
        /**
         * To be used in conjunction with SIGTERM and SIGINT.
         *
         * ```ts
         * const processor = await jobProcessor()
         * const stop = processor.start({})
         * const shutDown = async () => {
         *   await stop()
         *   process.exit(0)
         * }
         *
         * process.on('SIGTERM', shutDown)
         * process.on('SIGINT', shutDown)
         * ```
         */
        stop: () => Promise<void>;
    };
    /**
     * Call stop on all jobs and close the NATS connection.
     */
    stop: () => Promise<void>;
    emitter: EventEmitter<Events, any>;
}>;