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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
///
import type { FarmOptions, PoolExitResult, PromiseWithCustomMessage, TaskQueue } from './types';
export { default as PriorityQueue } from './PriorityQueue';
export { default as FifoQueue } from './FifoQueue';
export { default as messageParent } from './workers/messageParent';
/**
* The Jest farm (publicly called "Worker") is a class that allows you to queue
* methods across multiple child processes, in order to parallelize work. This
* is done by providing an absolute path to a module that will be loaded on each
* of the child processes, and bridged to the main process.
*
* Bridged methods are specified by using the "exposedMethods" property of the
* "options" object. This is an array of strings, where each of them corresponds
* to the exported name in the loaded module.
*
* You can also control the amount of workers by using the "numWorkers" property
* of the "options" object, and the settings passed to fork the process through
* the "forkOptions" property. The amount of workers defaults to the amount of
* CPUS minus one.
*
* Queueing calls can be done in two ways:
* - Standard method: calls will be redirected to the first available worker,
* so they will get executed as soon as they can.
*
* - Sticky method: if a "computeWorkerKey" method is provided within the
* config, the resulting string of this method will be used as a key.
* Every time this key is returned, it is guaranteed that your job will be
* processed by the same worker. This is specially useful if your workers
* are caching results.
*/
export declare class Worker {
private _ending;
private _farm;
private _options;
private _workerPool;
constructor(workerPath: string, options?: FarmOptions);
private _bindExposedWorkerMethods;
private _callFunctionWithArgs;
getStderr(): NodeJS.ReadableStream;
getStdout(): NodeJS.ReadableStream;
end(): Promise;
}
export type { PromiseWithCustomMessage, TaskQueue };