49 lines
2.2 KiB
TypeScript
49 lines
2.2 KiB
TypeScript
/**
|
|
* 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.
|
|
*/
|
|
/// <reference types="node" />
|
|
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<PoolExitResult>;
|
|
}
|
|
export type { PromiseWithCustomMessage, TaskQueue };
|