/*!
* /**
* * Copyright (c) Meta Platforms, Inc. and affiliates.
* *
* * This source code is licensed under the MIT license found in the
* * LICENSE file in the root directory of this source tree.
* * /
*/
/******/ (() => { // webpackBootstrap
/******/ "use strict";
/******/ var __webpack_modules__ = ({
/***/ "./src/Farm.ts"
(__unused_webpack_module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
var _FifoQueue = _interopRequireDefault(__webpack_require__("./src/FifoQueue.ts"));
var _types = __webpack_require__("./src/types.ts");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
class Farm {
_computeWorkerKey;
_workerSchedulingPolicy;
_cacheKeys = Object.create(null);
_locks = [];
_offset = 0;
_taskQueue;
constructor(_numOfWorkers, _callback, options = {}) {
this._numOfWorkers = _numOfWorkers;
this._callback = _callback;
this._computeWorkerKey = options.computeWorkerKey;
this._workerSchedulingPolicy = options.workerSchedulingPolicy ?? 'round-robin';
this._taskQueue = options.taskQueue ?? new _FifoQueue.default();
}
doWork(method, ...args) {
const customMessageListeners = new Set();
const addCustomMessageListener = listener => {
customMessageListeners.add(listener);
return () => {
customMessageListeners.delete(listener);
};
};
const onCustomMessage = message => {
for (const listener of customMessageListeners) listener(message);
};
const promise = new Promise(
// Bind args to this function so it won't reference to the parent scope.
// This prevents a memory leak in v8, because otherwise the function will
// retain args for the closure.
((args, resolve, reject) => {
const computeWorkerKey = this._computeWorkerKey;
const request = [_types.CHILD_MESSAGE_CALL, false, method, args];
let worker = null;
let hash = null;
if (computeWorkerKey) {
hash = computeWorkerKey.call(this, method, ...args);
worker = hash == null ? null : this._cacheKeys[hash];
}
const onStart = worker => {
if (hash != null) {
this._cacheKeys[hash] = worker;
}
};
const onEnd = (error, result) => {
customMessageListeners.clear();
if (error) {
reject(error);
} else {
resolve(result);
}
};
const task = {
onCustomMessage,
onEnd,
onStart,
request
};
if (worker) {
this._taskQueue.enqueue(task, worker.getWorkerId());
this._process(worker.getWorkerId());
} else {
this._push(task);
}
}).bind(null, args));
promise.UNSTABLE_onCustomMessage = addCustomMessageListener;
return promise;
}
_process(workerId) {
if (this._isLocked(workerId)) {
return this;
}
const task = this._taskQueue.dequeue(workerId);
if (!task) {
return this;
}
if (task.request[1]) {
throw new Error('Queue implementation returned processed task');
}
// Reference the task object outside so it won't be retained by onEnd,
// and other properties of the task object, such as task.request can be
// garbage collected.
let taskOnEnd = task.onEnd;
const onEnd = (error, result) => {
if (taskOnEnd) {
taskOnEnd(error, result);
}
taskOnEnd = null;
this._unlock(workerId);
this._process(workerId);
};
task.request[1] = true;
this._lock(workerId);
this._callback(workerId, task.request, task.onStart, onEnd, task.onCustomMessage);
return this;
}
_push(task) {
this._taskQueue.enqueue(task);
const offset = this._getNextWorkerOffset();
for (let i = 0; i < this._numOfWorkers; i++) {
this._process((offset + i) % this._numOfWorkers);
if (task.request[1]) {
break;
}
}
return this;
}
_getNextWorkerOffset() {
switch (this._workerSchedulingPolicy) {
case 'in-order':
return 0;
case 'round-robin':
return this._offset++;
}
}
_lock(workerId) {
this._locks[workerId] = true;
}
_unlock(workerId) {
this._locks[workerId] = false;
}
_isLocked(workerId) {
return this._locks[workerId];
}
}
exports["default"] = Farm;
/***/ },
/***/ "./src/FifoQueue.ts"
(__unused_webpack_module, exports) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/**
* First-in, First-out task queue that manages a dedicated pool
* for each worker as well as a shared queue. The FIFO ordering is guaranteed
* across the worker specific and shared queue.
*/
class FifoQueue {
_workerQueues = [];
_sharedQueue = new InternalQueue();
enqueue(task, workerId) {
if (workerId == null) {
this._sharedQueue.enqueue(task);
return;
}
let workerQueue = this._workerQueues[workerId];
if (workerQueue == null) {
workerQueue = this._workerQueues[workerId] = new InternalQueue();
}
const sharedTop = this._sharedQueue.peekLast();
const item = {
previousSharedTask: sharedTop,
task
};
workerQueue.enqueue(item);
}
dequeue(workerId) {
const workerTop = this._workerQueues[workerId]?.peek();
const sharedTaskIsProcessed = workerTop?.previousSharedTask?.request[1] ?? true;
// Process the top task from the shared queue if
// - there's no task in the worker specific queue or
// - if the non-worker-specific task after which this worker specific task
// has been queued wasn't processed yet
if (workerTop != null && sharedTaskIsProcessed) {
return this._workerQueues[workerId]?.dequeue()?.task ?? null;
}
return this._sharedQueue.dequeue();
}
}
exports["default"] = FifoQueue;
/**
* FIFO queue for a single worker / shared queue.
*/
class InternalQueue {
_head = null;
_last = null;
enqueue(value) {
const item = {
next: null,
value
};
if (this._last == null) {
this._head = item;
} else {
this._last.next = item;
}
this._last = item;
}
dequeue() {
if (this._head == null) {
return null;
}
const item = this._head;
this._head = item.next;
if (this._head == null) {
this._last = null;
}
return item.value;
}
peek() {
return this._head?.value ?? null;
}
peekLast() {
return this._last?.value ?? null;
}
}
/***/ },
/***/ "./src/PriorityQueue.ts"
(__unused_webpack_module, exports) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/**
* Priority queue that processes tasks in natural ordering (lower priority first)
* according to the priority computed by the function passed in the constructor.
*
* FIFO ordering isn't guaranteed for tasks with the same priority.
*
* Worker specific tasks with the same priority as a non-worker specific task
* are always processed first.
*/
class PriorityQueue {
_queue = [];
_sharedQueue = new MinHeap();
constructor(_computePriority) {
this._computePriority = _computePriority;
}
enqueue(task, workerId) {
if (workerId == null) {
this._enqueue(task, this._sharedQueue);
} else {
const queue = this._getWorkerQueue(workerId);
this._enqueue(task, queue);
}
}
_enqueue(task, queue) {
const item = {
priority: this._computePriority(task.request[2], ...task.request[3]),
task
};
queue.add(item);
}
dequeue(workerId) {
const workerQueue = this._getWorkerQueue(workerId);
const workerTop = workerQueue.peek();
const sharedTop = this._sharedQueue.peek();
// use the task from the worker queue if there's no task in the shared queue
// or if the priority of the worker queue is smaller or equal to the
// priority of the top task in the shared queue. The tasks of the
// worker specific queue are preferred because no other worker can pick this
// specific task up.
if (sharedTop == null || workerTop != null && workerTop.priority <= sharedTop.priority) {
return workerQueue.poll()?.task ?? null;
}
return this._sharedQueue.poll().task;
}
_getWorkerQueue(workerId) {
let queue = this._queue[workerId];
if (queue == null) {
queue = this._queue[workerId] = new MinHeap();
}
return queue;
}
}
exports["default"] = PriorityQueue;
class MinHeap {
_heap = [];
peek() {
return this._heap[0] ?? null;
}
add(item) {
const nodes = this._heap;
nodes.push(item);
if (nodes.length === 1) {
return;
}
let currentIndex = nodes.length - 1;
// Bubble up the added node as long as the parent is bigger
while (currentIndex > 0) {
const parentIndex = Math.floor((currentIndex + 1) / 2) - 1;
const parent = nodes[parentIndex];
if (parent.priority <= item.priority) {
break;
}
nodes[currentIndex] = parent;
nodes[parentIndex] = item;
currentIndex = parentIndex;
}
}
poll() {
const nodes = this._heap;
const result = nodes[0];
const lastElement = nodes.pop();
// heap was empty or removed the last element
if (result == null || nodes.length === 0) {
return result ?? null;
}
let index = 0;
nodes[0] = lastElement ?? null;
const element = nodes[0];
while (true) {
let swapIndex = null;
const rightChildIndex = (index + 1) * 2;
const leftChildIndex = rightChildIndex - 1;
const rightChild = nodes[rightChildIndex];
const leftChild = nodes[leftChildIndex];
// if the left child is smaller, swap with the left
if (leftChild != null && leftChild.priority < element.priority) {
swapIndex = leftChildIndex;
}
// If the right child is smaller or the right child is smaller than the left
// then swap with the right child
if (rightChild != null && rightChild.priority < (swapIndex == null ? element : leftChild).priority) {
swapIndex = rightChildIndex;
}
if (swapIndex == null) {
break;
}
nodes[index] = nodes[swapIndex];
nodes[swapIndex] = element;
index = swapIndex;
}
return result;
}
}
/***/ },
/***/ "./src/WorkerPool.ts"
(__unused_webpack_module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
var _BaseWorkerPool = _interopRequireDefault(__webpack_require__("./src/base/BaseWorkerPool.ts"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
class WorkerPool extends _BaseWorkerPool.default {
send(workerId, request, onStart, onEnd, onCustomMessage) {
this.restartWorkerIfShutDown(workerId);
this.getWorkerById(workerId).send(request, onStart, onEnd, onCustomMessage);
}
createWorker(workerOptions) {
let Worker;
if (this._options.enableWorkerThreads) {
Worker = (__webpack_require__("./src/workers/NodeThreadsWorker.ts")/* ["default"] */ .A);
} else {
Worker = (__webpack_require__("./src/workers/ChildProcessWorker.ts")/* ["default"] */ .Ay);
}
return new Worker(workerOptions);
}
}
var _default = exports["default"] = WorkerPool;
/***/ },
/***/ "./src/base/BaseWorkerPool.ts"
(__unused_webpack_module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
function _mergeStream() {
const data = _interopRequireDefault(require("merge-stream"));
_mergeStream = function () {
return data;
};
return data;
}
var _types = __webpack_require__("./src/types.ts");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/* istanbul ignore next */
// eslint-disable-next-line @typescript-eslint/no-empty-function
const emptyMethod = () => {};
class BaseWorkerPool {
_stderr;
_stdout;
_options;
_workers;
_workerPath;
constructor(workerPath, options) {
this._options = options;
this._workerPath = workerPath;
this._workers = Array.from({
length: options.numWorkers
});
const stdout = (0, _mergeStream().default)();
const stderr = (0, _mergeStream().default)();
const {
forkOptions,
maxRetries,
resourceLimits,
setupArgs
} = options;
for (let i = 0; i < options.numWorkers; i++) {
const workerOptions = {
forkOptions,
idleMemoryLimit: this._options.idleMemoryLimit,
maxRetries,
resourceLimits,
setupArgs,
workerId: i,
workerPath
};
const worker = this.createWorker(workerOptions);
const workerStdout = worker.getStdout();
const workerStderr = worker.getStderr();
if (workerStdout) {
stdout.add(workerStdout);
}
if (workerStderr) {
stderr.add(workerStderr);
}
this._workers[i] = worker;
}
this._stdout = stdout;
this._stderr = stderr;
}
getStderr() {
return this._stderr;
}
getStdout() {
return this._stdout;
}
getWorkers() {
return this._workers;
}
getWorkerById(workerId) {
return this._workers[workerId];
}
restartWorkerIfShutDown(workerId) {
if (this._workers[workerId].state === _types.WorkerStates.SHUT_DOWN) {
const {
forkOptions,
maxRetries,
resourceLimits,
setupArgs
} = this._options;
const workerOptions = {
forkOptions,
idleMemoryLimit: this._options.idleMemoryLimit,
maxRetries,
resourceLimits,
setupArgs,
workerId,
workerPath: this._workerPath
};
const worker = this.createWorker(workerOptions);
this._workers[workerId] = worker;
}
}
createWorker(_workerOptions) {
throw new Error('Missing method createWorker in WorkerPool');
}
async start() {
await Promise.all(this._workers.map(async worker => {
await worker.waitForWorkerReady();
await new Promise((resolve, reject) => {
worker.send([_types.CHILD_MESSAGE_CALL_SETUP], emptyMethod, error => {
if (error) {
reject(error);
} else {
resolve();
}
}, emptyMethod);
});
}));
}
async end() {
// We do not cache the request object here. If so, it would only be only
// processed by one of the workers, and we want them all to close.
const workerExitPromises = this._workers.map(async worker => {
worker.send([_types.CHILD_MESSAGE_END, false], emptyMethod, emptyMethod, emptyMethod);
// Schedule a force exit in case worker fails to exit gracefully so
// await worker.waitForExit() never takes longer than FORCE_EXIT_DELAY
let forceExited = false;
const forceExitTimeout = setTimeout(() => {
worker.forceExit();
forceExited = true;
}, this._options.workerGracefulExitTimeout ?? 500);
await worker.waitForExit();
// Worker ideally exited gracefully, don't send force exit then
clearTimeout(forceExitTimeout);
return forceExited;
});
const workerExits = await Promise.all(workerExitPromises);
return workerExits.reduce((result, forceExited) => ({
forceExited: result.forceExited || forceExited
}), {
forceExited: false
});
}
}
exports["default"] = BaseWorkerPool;
/***/ },
/***/ "./src/types.ts"
(__unused_webpack_module, exports) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.WorkerStates = exports.WorkerEvents = exports.PARENT_MESSAGE_SETUP_ERROR = exports.PARENT_MESSAGE_OK = exports.PARENT_MESSAGE_MEM_USAGE = exports.PARENT_MESSAGE_CUSTOM = exports.PARENT_MESSAGE_CLIENT_ERROR = exports.CHILD_MESSAGE_MEM_USAGE = exports.CHILD_MESSAGE_INITIALIZE = exports.CHILD_MESSAGE_END = exports.CHILD_MESSAGE_CALL_SETUP = exports.CHILD_MESSAGE_CALL = void 0;
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// Because of the dynamic nature of a worker communication process, all messages
// coming from any of the other processes cannot be typed. Thus, many types
// include "unknown" as a TS type, which is (unfortunately) correct here.
const CHILD_MESSAGE_INITIALIZE = exports.CHILD_MESSAGE_INITIALIZE = 0;
const CHILD_MESSAGE_CALL = exports.CHILD_MESSAGE_CALL = 1;
const CHILD_MESSAGE_END = exports.CHILD_MESSAGE_END = 2;
const CHILD_MESSAGE_MEM_USAGE = exports.CHILD_MESSAGE_MEM_USAGE = 3;
const CHILD_MESSAGE_CALL_SETUP = exports.CHILD_MESSAGE_CALL_SETUP = 4;
const PARENT_MESSAGE_OK = exports.PARENT_MESSAGE_OK = 0;
const PARENT_MESSAGE_CLIENT_ERROR = exports.PARENT_MESSAGE_CLIENT_ERROR = 1;
const PARENT_MESSAGE_SETUP_ERROR = exports.PARENT_MESSAGE_SETUP_ERROR = 2;
const PARENT_MESSAGE_CUSTOM = exports.PARENT_MESSAGE_CUSTOM = 3;
const PARENT_MESSAGE_MEM_USAGE = exports.PARENT_MESSAGE_MEM_USAGE = 4;
// Option objects.
// Messages passed from the parent to the children.
// Messages passed from the children to the parent.
// Queue types.
let WorkerStates = exports.WorkerStates = /*#__PURE__*/function (WorkerStates) {
WorkerStates["STARTING"] = "starting";
WorkerStates["OK"] = "ok";
WorkerStates["OUT_OF_MEMORY"] = "oom";
WorkerStates["RESTARTING"] = "restarting";
WorkerStates["SHUTTING_DOWN"] = "shutting-down";
WorkerStates["SHUT_DOWN"] = "shut-down";
return WorkerStates;
}({});
let WorkerEvents = exports.WorkerEvents = /*#__PURE__*/function (WorkerEvents) {
WorkerEvents["STATE_CHANGE"] = "state-change";
return WorkerEvents;
}({});
/***/ },
/***/ "./src/workers/ChildProcessWorker.ts"
(__unused_webpack_module, exports, __webpack_require__) {
var __webpack_unused_export__;
__webpack_unused_export__ = ({
value: true
});
exports.Ay = __webpack_unused_export__ = void 0;
function _nodeChild_process() {
const data = require("node:child_process");
_nodeChild_process = function () {
return data;
};
return data;
}
function _nodeOs() {
const data = require("node:os");
_nodeOs = function () {
return data;
};
return data;
}
function _mergeStream() {
const data = _interopRequireDefault(require("merge-stream"));
_mergeStream = function () {
return data;
};
return data;
}
function _supportsColor() {
const data = require("supports-color");
_supportsColor = function () {
return data;
};
return data;
}
var _types = __webpack_require__("./src/types.ts");
var _WorkerAbstract = _interopRequireDefault(__webpack_require__("./src/workers/WorkerAbstract.ts"));
var _safeMessageTransferring = __webpack_require__("./src/workers/safeMessageTransferring.ts");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const SIGNAL_BASE_EXIT_CODE = 128;
const SIGKILL_EXIT_CODE = SIGNAL_BASE_EXIT_CODE + 9;
const SIGTERM_EXIT_CODE = SIGNAL_BASE_EXIT_CODE + 15;
// How long to wait after SIGTERM before sending SIGKILL
const SIGKILL_DELAY = __webpack_unused_export__ = 500;
/**
* This class wraps the child process and provides a nice interface to
* communicate with. It takes care of:
*
* - Re-spawning the process if it dies.
* - Queues calls while the worker is busy.
* - Re-sends the requests if the worker blew up.
*
* The reason for queueing them here (since childProcess.send also has an
* internal queue) is because the worker could be doing asynchronous work, and
* this would lead to the child process to read its receiving buffer and start a
* second call. By queueing calls here, we don't send the next call to the
* children until we receive the result of the previous one.
*
* As soon as a request starts to be processed by a worker, its "processed"
* field is changed to "true", so that other workers which might encounter the
* same call skip it.
*/
class ChildProcessWorker extends _WorkerAbstract.default {
_child;
_options;
_request;
_retries;
_onProcessEnd;
_onCustomMessage;
_stdout;
_stderr;
_stderrBuffer = [];
_memoryUsagePromise;
_resolveMemoryUsage;
_childIdleMemoryUsage;
_childIdleMemoryUsageLimit;
_memoryUsageCheck = false;
_childWorkerPath;
constructor(options) {
super(options);
this._options = options;
this._request = null;
this._stdout = null;
this._stderr = null;
this._childIdleMemoryUsage = null;
this._childIdleMemoryUsageLimit = options.idleMemoryLimit ?? null;
this._childWorkerPath = options.childWorkerPath || require.resolve('./processChild');
this.state = _types.WorkerStates.STARTING;
this.initialize();
}
initialize() {
if (this.state === _types.WorkerStates.OUT_OF_MEMORY || this.state === _types.WorkerStates.SHUTTING_DOWN || this.state === _types.WorkerStates.SHUT_DOWN) {
return;
}
if (this._child && this._child.connected) {
this._child.kill('SIGKILL');
}
this.state = _types.WorkerStates.STARTING;
const forceColor = _supportsColor().stdout ? {
FORCE_COLOR: '1'
} : {};
const silent = this._options.silent ?? true;
if (!silent) {
// NOTE: Detecting an out of memory crash is independent of idle memory usage monitoring. We want to
// monitor for a crash occurring so that it can be handled as required and so we can tell the difference
// between an OOM crash and another kind of crash. We need to do this because if a worker crashes due to
// an OOM event sometimes it isn't seen by the worker pool and it just sits there waiting for the worker
// to respond and it never will.
console.warn('Unable to detect out of memory event if silent === false');
}
this._stderrBuffer = [];
const options = {
cwd: process.cwd(),
env: {
...process.env,
JEST_WORKER_ID: String(this._options.workerId + 1),
// 0-indexed workerId, 1-indexed JEST_WORKER_ID
...forceColor
},
// Suppress --debug / --inspect flags while preserving others (like --harmony).
execArgv: process.execArgv.filter(v => !/^--(debug|inspect)/.test(v)),
// default to advanced serialization in order to match worker threads
serialization: 'advanced',
silent,
...this._options.forkOptions
};
this._child = (0, _nodeChild_process().fork)(this._childWorkerPath, [], options);
if (this._child.stdout) {
if (!this._stdout) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stdout = (0, _mergeStream().default)(this._getFakeStream());
}
this._stdout.add(this._child.stdout);
}
if (this._child.stderr) {
if (!this._stderr) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stderr = (0, _mergeStream().default)(this._getFakeStream());
}
this._stderr.add(this._child.stderr);
this._child.stderr.on('data', this.stderrDataHandler.bind(this));
}
this._child.on('message', this._onMessage.bind(this));
this._child.on('exit', this._onExit.bind(this));
this._child.on('disconnect', this._onDisconnect.bind(this));
this._child.send([_types.CHILD_MESSAGE_INITIALIZE, false, this._options.workerPath, this._options.setupArgs]);
this._retries++;
// If we exceeded the amount of retries, we will emulate an error reply
// coming from the child. This avoids code duplication related with cleaning
// the queue, and scheduling the next call.
if (this._retries > this._options.maxRetries) {
const error = new Error(`Jest worker encountered ${this._retries} child process exceptions, exceeding retry limit`);
this._onMessage([_types.PARENT_MESSAGE_CLIENT_ERROR, error.name, error.message, error.stack, {
type: 'WorkerError'
}]);
// Clear the request so we don't keep executing it.
this._request = null;
}
this.state = _types.WorkerStates.OK;
if (this._resolveWorkerReady) {
this._resolveWorkerReady();
}
}
stderrDataHandler(chunk) {
if (chunk) {
this._stderrBuffer.push(Buffer.from(chunk));
}
this._detectOutOfMemoryCrash();
if (this.state === _types.WorkerStates.OUT_OF_MEMORY) {
this._workerReadyPromise = undefined;
this._resolveWorkerReady = undefined;
this.killChild();
this._shutdown();
}
}
_detectOutOfMemoryCrash() {
try {
const bufferStr = Buffer.concat(this._stderrBuffer).toString('utf8');
if (bufferStr.includes('heap out of memory') || bufferStr.includes('allocation failure;') || bufferStr.includes('Last few GCs')) {
if (this.state === _types.WorkerStates.OK || this.state === _types.WorkerStates.STARTING || this.state === _types.WorkerStates.SHUT_DOWN) {
this.state = _types.WorkerStates.OUT_OF_MEMORY;
}
}
} catch (error) {
console.error('Error looking for out of memory crash', error);
}
}
_onDisconnect() {
this._workerReadyPromise = undefined;
this._resolveWorkerReady = undefined;
this._detectOutOfMemoryCrash();
if (this.state === _types.WorkerStates.OUT_OF_MEMORY) {
this.killChild();
this._shutdown();
}
}
_onMessage(response) {
// Ignore messages not intended for us
if (!Array.isArray(response)) return;
// TODO: Add appropriate type check
let error;
switch (response[0]) {
case _types.PARENT_MESSAGE_OK:
this._onProcessEnd(null, (0, _safeMessageTransferring.unpackMessage)(response[1]));
break;
case _types.PARENT_MESSAGE_CLIENT_ERROR:
error = response[4];
if (error != null && typeof error === 'object') {
const extra = error;
// @ts-expect-error: no index
const NativeCtor = globalThis[response[1]];
const Ctor = typeof NativeCtor === 'function' ? NativeCtor : Error;
error = new Ctor(response[2]);
error.type = response[1];
error.stack = response[3];
for (const key in extra) {
error[key] = extra[key];
}
}
this._onProcessEnd(error, null);
break;
case _types.PARENT_MESSAGE_SETUP_ERROR:
error = new Error(`Error when calling setup: ${response[2]}`);
error.type = response[1];
error.stack = response[3];
this._onProcessEnd(error, null);
break;
case _types.PARENT_MESSAGE_CUSTOM:
this._onCustomMessage((0, _safeMessageTransferring.unpackMessage)(response[1]));
break;
case _types.PARENT_MESSAGE_MEM_USAGE:
this._childIdleMemoryUsage = response[1];
if (this._resolveMemoryUsage) {
this._resolveMemoryUsage(response[1]);
this._resolveMemoryUsage = undefined;
this._memoryUsagePromise = undefined;
}
this._performRestartIfRequired();
break;
default:
// Ignore messages not intended for us
break;
}
}
_performRestartIfRequired() {
if (this._memoryUsageCheck) {
this._memoryUsageCheck = false;
let limit = this._childIdleMemoryUsageLimit;
// TODO: At some point it would make sense to make use of
// stringToBytes found in jest-config, however as this
// package does not have any dependencies on an other jest
// packages that can wait until some other time.
if (limit && limit > 0 && limit <= 1) {
limit = Math.floor((0, _nodeOs().totalmem)() * limit);
} else if (limit) {
limit = Math.floor(limit);
}
if (limit && this._childIdleMemoryUsage && this._childIdleMemoryUsage > limit) {
this._restart();
}
}
}
_restart() {
this.state = _types.WorkerStates.RESTARTING;
this.killChild();
}
_onExit(exitCode, signal) {
this._workerReadyPromise = undefined;
this._resolveWorkerReady = undefined;
this._detectOutOfMemoryCrash();
if (exitCode !== 0 && this.state === _types.WorkerStates.OUT_OF_MEMORY) {
this._onProcessEnd(new Error('Jest worker ran out of memory and crashed'), null);
this._shutdown();
} else if (exitCode !== 0 && exitCode !== null && exitCode !== SIGTERM_EXIT_CODE && exitCode !== SIGKILL_EXIT_CODE && this.state !== _types.WorkerStates.SHUTTING_DOWN || this.state === _types.WorkerStates.RESTARTING) {
this.state = _types.WorkerStates.RESTARTING;
this.initialize();
if (this._request) {
this._child.send(this._request);
}
} else {
// At this point, it's not clear why the child process exited. There could
// be several reasons:
//
// 1. The child process exited successfully after finishing its work.
// This is the most likely case.
// 2. The child process crashed in a manner that wasn't caught through
// any of the heuristic-based checks above.
// 3. The child process was killed by another process or daemon unrelated
// to Jest. For example, oom-killer on Linux may have picked the child
// process to kill because overall system memory is constrained.
//
// If there's a pending request to the child process in any of those
// situations, the request still needs to be handled in some manner before
// entering the shutdown phase. Otherwise the caller expecting a response
// from the worker will never receive indication that something unexpected
// happened and hang forever.
//
// In normal operation, the request is handled and cleared before the
// child process exits. If it's still present, it's not clear what
// happened and probably best to throw an error. In practice, this usually
// happens when the child process is killed externally.
//
// There's a reasonable argument that the child process should be retried
// with request re-sent in this scenario. However, if the problem was due
// to situations such as oom-killer attempting to free up system
// resources, retrying would exacerbate the problem.
const isRequestStillPending = !!this._request;
if (isRequestStillPending) {
// If a signal is present, we can be reasonably confident the process
// was killed externally. Log this fact so it's more clear to users that
// something went wrong externally, rather than a bug in Jest itself.
const error = new Error(signal == null ? `A jest worker process (pid=${this._child.pid}) crashed for an unknown reason: exitCode=${exitCode}` : `A jest worker process (pid=${this._child.pid}) was terminated by another process: signal=${signal}, exitCode=${exitCode}. Operating system logs may contain more information on why this occurred.`);
this._onProcessEnd(error, null);
}
this._shutdown();
}
}
send(request, onProcessStart, onProcessEnd, onCustomMessage) {
this._stderrBuffer = [];
onProcessStart(this);
this._onProcessEnd = (...args) => {
const hasRequest = !!this._request;
// Clean the request to avoid sending past requests to workers that fail
// while waiting for a new request (timers, unhandled rejections...)
this._request = null;
if (this._childIdleMemoryUsageLimit !== null && this._child.connected && hasRequest) {
if (this._childIdleMemoryUsageLimit === 0) {
// Special case: `idleMemoryLimit` of `0` means always restart.
this._restart();
} else {
this.checkMemoryUsage();
}
}
return onProcessEnd(...args);
};
this._onCustomMessage = (...arg) => onCustomMessage(...arg);
this._request = request;
this._retries = 0;
// eslint-disable-next-line @typescript-eslint/no-empty-function
this._child.send(request, () => {});
}
waitForExit() {
return this._exitPromise;
}
killChild() {
// We store a reference so that there's no way we can accidentally
// kill a new worker that has been spawned.
const childToKill = this._child;
childToKill.kill('SIGTERM');
return setTimeout(() => childToKill.kill('SIGKILL'), SIGKILL_DELAY);
}
forceExit() {
this.state = _types.WorkerStates.SHUTTING_DOWN;
const sigkillTimeout = this.killChild();
this._exitPromise.then(() => clearTimeout(sigkillTimeout));
}
getWorkerId() {
return this._options.workerId;
}
/**
* Gets the process id of the worker.
*
* @returns Process id.
*/
getWorkerSystemId() {
return this._child.pid;
}
getStdout() {
return this._stdout;
}
getStderr() {
return this._stderr;
}
/**
* Gets the last reported memory usage.
*
* @returns Memory usage in bytes.
*/
getMemoryUsage() {
if (!this._memoryUsagePromise) {
let rejectCallback;
const promise = new Promise((resolve, reject) => {
this._resolveMemoryUsage = resolve;
rejectCallback = reject;
});
this._memoryUsagePromise = promise;
if (!this._child.connected && rejectCallback) {
rejectCallback(new Error('Child process is not running.'));
this._memoryUsagePromise = undefined;
this._resolveMemoryUsage = undefined;
return promise;
}
this._child.send([_types.CHILD_MESSAGE_MEM_USAGE], err => {
if (err && rejectCallback) {
this._memoryUsagePromise = undefined;
this._resolveMemoryUsage = undefined;
rejectCallback(err);
}
});
return promise;
}
return this._memoryUsagePromise;
}
/**
* Gets updated memory usage and restarts if required
*/
checkMemoryUsage() {
if (this._childIdleMemoryUsageLimit === null) {
console.warn('Memory usage of workers can only be checked if a limit is set');
} else {
this._memoryUsageCheck = true;
this._child.send([_types.CHILD_MESSAGE_MEM_USAGE], err => {
if (err) {
console.error('Unable to check memory usage', err);
}
});
}
}
isWorkerRunning() {
return this._child.connected && !this._child.killed;
}
}
exports.Ay = ChildProcessWorker;
/***/ },
/***/ "./src/workers/NodeThreadsWorker.ts"
(__unused_webpack_module, exports, __webpack_require__) {
var __webpack_unused_export__;
__webpack_unused_export__ = ({
value: true
});
exports.A = void 0;
function _nodeOs() {
const data = require("node:os");
_nodeOs = function () {
return data;
};
return data;
}
function _nodeWorker_threads() {
const data = require("node:worker_threads");
_nodeWorker_threads = function () {
return data;
};
return data;
}
function _mergeStream() {
const data = _interopRequireDefault(require("merge-stream"));
_mergeStream = function () {
return data;
};
return data;
}
var _types = __webpack_require__("./src/types.ts");
var _WorkerAbstract = _interopRequireDefault(__webpack_require__("./src/workers/WorkerAbstract.ts"));
var _safeMessageTransferring = __webpack_require__("./src/workers/safeMessageTransferring.ts");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
class ExperimentalWorker extends _WorkerAbstract.default {
_worker;
_options;
_request;
_retries;
_onProcessEnd;
_onCustomMessage;
_stdout;
_stderr;
_memoryUsagePromise;
_resolveMemoryUsage;
_childWorkerPath;
_childIdleMemoryUsage;
_childIdleMemoryUsageLimit;
_memoryUsageCheck = false;
constructor(options) {
super(options);
this._options = options;
this._request = null;
this._stdout = null;
this._stderr = null;
this._childWorkerPath = options.childWorkerPath || require.resolve('./threadChild');
this._childIdleMemoryUsage = null;
this._childIdleMemoryUsageLimit = options.idleMemoryLimit || null;
this.initialize();
}
initialize() {
if (this.state === _types.WorkerStates.OUT_OF_MEMORY || this.state === _types.WorkerStates.SHUTTING_DOWN || this.state === _types.WorkerStates.SHUT_DOWN) {
return;
}
if (this._worker) {
this._worker.terminate();
}
this.state = _types.WorkerStates.STARTING;
this._worker = new (_nodeWorker_threads().Worker)(this._childWorkerPath, {
eval: false,
resourceLimits: this._options.resourceLimits,
stderr: true,
stdout: true,
workerData: this._options.workerData,
...this._options.forkOptions
});
if (this._worker.stdout) {
if (!this._stdout) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stdout = (0, _mergeStream().default)(this._getFakeStream());
}
this._stdout.add(this._worker.stdout);
}
if (this._worker.stderr) {
if (!this._stderr) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stderr = (0, _mergeStream().default)(this._getFakeStream());
}
this._stderr.add(this._worker.stderr);
}
// This can be useful for debugging.
if (!(this._options.silent ?? true)) {
this._worker.stdout.setEncoding('utf8');
// eslint-disable-next-line no-console
this._worker.stdout.on('data', console.log);
this._worker.stderr.setEncoding('utf8');
this._worker.stderr.on('data', console.error);
}
this._worker.on('message', this._onMessage.bind(this));
this._worker.on('exit', this._onExit.bind(this));
this._worker.on('error', this._onError.bind(this));
this._worker.postMessage([_types.CHILD_MESSAGE_INITIALIZE, false, this._options.workerPath, this._options.setupArgs, String(this._options.workerId + 1) // 0-indexed workerId, 1-indexed JEST_WORKER_ID
]);
this._retries++;
// If we exceeded the amount of retries, we will emulate an error reply
// coming from the child. This avoids code duplication related with cleaning
// the queue, and scheduling the next call.
if (this._retries > this._options.maxRetries) {
const error = new Error('Call retries were exceeded');
this._onMessage([_types.PARENT_MESSAGE_CLIENT_ERROR, error.name, error.message, error.stack, {
type: 'WorkerError'
}]);
}
this.state = _types.WorkerStates.OK;
if (this._resolveWorkerReady) {
this._resolveWorkerReady();
}
}
_onError(error) {
if (error.message.includes('heap out of memory')) {
this.state = _types.WorkerStates.OUT_OF_MEMORY;
// Threads don't behave like processes, they don't crash when they run out of
// memory. But for consistency we want them to behave like processes so we call
// terminate to simulate a crash happening that was not planned
this._worker.terminate();
}
}
_onMessage(response) {
// Ignore messages not intended for us
if (!Array.isArray(response)) return;
let error;
switch (response[0]) {
case _types.PARENT_MESSAGE_OK:
this._onProcessEnd(null, (0, _safeMessageTransferring.unpackMessage)(response[1]));
break;
case _types.PARENT_MESSAGE_CLIENT_ERROR:
error = response[4];
if (error != null && typeof error === 'object') {
const extra = error;
// @ts-expect-error: no index
const NativeCtor = globalThis[response[1]];
const Ctor = typeof NativeCtor === 'function' ? NativeCtor : Error;
error = new Ctor(response[2]);
error.type = response[1];
error.stack = response[3];
for (const key in extra) {
// @ts-expect-error: no index
error[key] = extra[key];
}
}
this._onProcessEnd(error, null);
break;
case _types.PARENT_MESSAGE_SETUP_ERROR:
error = new Error(`Error when calling setup: ${response[2]}`);
// @ts-expect-error: adding custom properties to errors.
error.type = response[1];
error.stack = response[3];
this._onProcessEnd(error, null);
break;
case _types.PARENT_MESSAGE_CUSTOM:
this._onCustomMessage((0, _safeMessageTransferring.unpackMessage)(response[1]));
break;
case _types.PARENT_MESSAGE_MEM_USAGE:
this._childIdleMemoryUsage = response[1];
if (this._resolveMemoryUsage) {
this._resolveMemoryUsage(response[1]);
this._resolveMemoryUsage = undefined;
this._memoryUsagePromise = undefined;
}
this._performRestartIfRequired();
break;
default:
// Ignore messages not intended for us
break;
}
}
_onExit(exitCode) {
this._workerReadyPromise = undefined;
this._resolveWorkerReady = undefined;
if (exitCode !== 0 && this.state === _types.WorkerStates.OUT_OF_MEMORY) {
this._onProcessEnd(new Error('Jest worker ran out of memory and crashed'), null);
this._shutdown();
} else if (exitCode !== 0 && this.state !== _types.WorkerStates.SHUTTING_DOWN && this.state !== _types.WorkerStates.SHUT_DOWN || this.state === _types.WorkerStates.RESTARTING) {
this.initialize();
if (this._request) {
this._worker.postMessage(this._request);
}
} else {
// If the worker thread exits while a request is still pending, throw an
// error. This is unexpected and tests may not have run to completion.
const isRequestStillPending = !!this._request;
if (isRequestStillPending) {
this._onProcessEnd(new Error('A Jest worker thread exited unexpectedly before finishing tests for an unknown reason. One of the ways this can happen is if process.exit() was called in testing code.'), null);
}
this._shutdown();
}
}
waitForExit() {
return this._exitPromise;
}
forceExit() {
this.state = _types.WorkerStates.SHUTTING_DOWN;
this._worker.terminate();
}
send(request, onProcessStart, onProcessEnd, onCustomMessage) {
onProcessStart(this);
this._onProcessEnd = (...args) => {
const hasRequest = !!this._request;
// Clean the request to avoid sending past requests to workers that fail
// while waiting for a new request (timers, unhandled rejections...)
this._request = null;
if (this._childIdleMemoryUsageLimit && hasRequest) {
this.checkMemoryUsage();
}
const res = onProcessEnd?.(...args);
// Clean up the reference so related closures can be garbage collected.
onProcessEnd = null;
return res;
};
this._onCustomMessage = (...arg) => onCustomMessage(...arg);
this._request = request;
this._retries = 0;
this._worker.postMessage(request);
}
getWorkerId() {
return this._options.workerId;
}
getStdout() {
return this._stdout;
}
getStderr() {
return this._stderr;
}
_performRestartIfRequired() {
if (this._memoryUsageCheck) {
this._memoryUsageCheck = false;
let limit = this._childIdleMemoryUsageLimit;
// TODO: At some point it would make sense to make use of
// stringToBytes found in jest-config, however as this
// package does not have any dependencies on an other jest
// packages that can wait until some other time.
if (limit && limit > 0 && limit <= 1) {
limit = Math.floor((0, _nodeOs().totalmem)() * limit);
} else if (limit) {
limit = Math.floor(limit);
}
if (limit && this._childIdleMemoryUsage && this._childIdleMemoryUsage > limit) {
this.state = _types.WorkerStates.RESTARTING;
this._worker.terminate();
}
}
}
/**
* Gets the last reported memory usage.
*
* @returns Memory usage in bytes.
*/
getMemoryUsage() {
if (!this._memoryUsagePromise) {
let rejectCallback;
const promise = new Promise((resolve, reject) => {
this._resolveMemoryUsage = resolve;
rejectCallback = reject;
});
this._memoryUsagePromise = promise;
if (!this._worker.threadId) {
rejectCallback(new Error('Child process is not running.'));
this._memoryUsagePromise = undefined;
this._resolveMemoryUsage = undefined;
return promise;
}
try {
this._worker.postMessage([_types.CHILD_MESSAGE_MEM_USAGE]);
} catch (error) {
this._memoryUsagePromise = undefined;
this._resolveMemoryUsage = undefined;
rejectCallback(error);
}
return promise;
}
return this._memoryUsagePromise;
}
/**
* Gets updated memory usage and restarts if required
*/
checkMemoryUsage() {
if (this._childIdleMemoryUsageLimit) {
this._memoryUsageCheck = true;
this._worker.postMessage([_types.CHILD_MESSAGE_MEM_USAGE]);
} else {
console.warn('Memory usage of workers can only be checked if a limit is set');
}
}
/**
* Gets the thread id of the worker.
*
* @returns Thread id.
*/
getWorkerSystemId() {
return this._worker.threadId;
}
isWorkerRunning() {
return this._worker.threadId >= 0;
}
}
exports.A = ExperimentalWorker;
/***/ },
/***/ "./src/workers/WorkerAbstract.ts"
(__unused_webpack_module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = void 0;
function _nodeStream() {
const data = require("node:stream");
_nodeStream = function () {
return data;
};
return data;
}
var _types = __webpack_require__("./src/types.ts");
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
class WorkerAbstract extends _nodeStream().EventEmitter {
/**
* DO NOT WRITE TO THIS DIRECTLY.
* Use this.state getter/setters so events are emitted correctly.
*/
#state = _types.WorkerStates.STARTING;
_fakeStream = null;
_exitPromise;
_resolveExitPromise;
_workerReadyPromise;
_resolveWorkerReady;
get state() {
return this.#state;
}
set state(value) {
if (this.#state !== value) {
const oldState = this.#state;
this.#state = value;
this.emit(_types.WorkerEvents.STATE_CHANGE, value, oldState);
}
}
constructor(options) {
super();
if (typeof options.on === 'object') {
for (const [event, handlers] of Object.entries(options.on)) {
// Can't do Array.isArray on a ReadonlyArray<T>.
// https://github.com/microsoft/TypeScript/issues/17002
if (typeof handlers === 'function') {
super.on(event, handlers);
} else {
for (const handler of handlers) {
super.on(event, handler);
}
}
}
}
this._exitPromise = new Promise(resolve => {
this._resolveExitPromise = resolve;
});
this._exitPromise.then(() => {
this.state = _types.WorkerStates.SHUT_DOWN;
});
}
/**
* Wait for the worker child process to be ready to handle requests.
*
* @returns Promise which resolves when ready.
*/
waitForWorkerReady() {
if (!this._workerReadyPromise) {
this._workerReadyPromise = new Promise((resolve, reject) => {
let settled = false;
let to;
switch (this.state) {
case _types.WorkerStates.OUT_OF_MEMORY:
case _types.WorkerStates.SHUTTING_DOWN:
case _types.WorkerStates.SHUT_DOWN:
settled = true;
reject(new Error(`Worker state means it will never be ready: ${this.state}`));
break;
case _types.WorkerStates.STARTING:
case _types.WorkerStates.RESTARTING:
this._resolveWorkerReady = () => {
settled = true;
resolve();
if (to) {
clearTimeout(to);
}
};
break;
case _types.WorkerStates.OK:
settled = true;
resolve();
break;
}
if (!settled) {
to = setTimeout(() => {
if (!settled) {
reject(new Error('Timeout starting worker'));
}
}, 500);
}
});
}
return this._workerReadyPromise;
}
/**
* Used to shut down the current working instance once the children have been
* killed off.
*/
_shutdown() {
this.state = _types.WorkerStates.SHUT_DOWN;
// End the permanent stream so the merged stream end too
if (this._fakeStream) {
this._fakeStream.end();
this._fakeStream = null;
}
this._resolveExitPromise();
}
_getFakeStream() {
if (!this._fakeStream) {
this._fakeStream = new (_nodeStream().PassThrough)();
}
return this._fakeStream;
}
}
exports["default"] = WorkerAbstract;
/***/ },
/***/ "./src/workers/isDataCloneError.ts"
(__unused_webpack_module, exports) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.isDataCloneError = isDataCloneError;
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// https://webidl.spec.whatwg.org/#datacloneerror
const DATA_CLONE_ERROR_CODE = 25;
/**
* Unfortunately, [`util.types.isNativeError(value)`](https://nodejs.org/api/util.html#utiltypesisnativeerrorvalue)
* return `false` for `DataCloneError` error.
* For this reason, try to detect it in this way
*/
function isDataCloneError(error) {
return error != null && typeof error === 'object' && 'name' in error && error.name === 'DataCloneError' && 'message' in error && typeof error.message === 'string' && 'code' in error && error.code === DATA_CLONE_ERROR_CODE;
}
/***/ },
/***/ "./src/workers/messageParent.ts"
(__unused_webpack_module, exports, __webpack_require__) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports["default"] = messageParent;
function _nodeWorker_threads() {
const data = require("node:worker_threads");
_nodeWorker_threads = function () {
return data;
};
return data;
}
function _jestUtil() {
const data = require("jest-util");
_jestUtil = function () {
return data;
};
return data;
}
var _types = __webpack_require__("./src/types.ts");
var _isDataCloneError = __webpack_require__("./src/workers/isDataCloneError.ts");
var _safeMessageTransferring = __webpack_require__("./src/workers/safeMessageTransferring.ts");
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
function messageParent(message, parentProcess = process) {
if (!_nodeWorker_threads().isMainThread && _nodeWorker_threads().parentPort != null) {
try {
_nodeWorker_threads().parentPort.postMessage([_types.PARENT_MESSAGE_CUSTOM, message]);
} catch (error) {
// Try to handle https://html.spec.whatwg.org/multipage/structured-data.html#structuredserializeinternal
// for `symbols` and `functions`
if ((0, _isDataCloneError.isDataCloneError)(error)) {
_nodeWorker_threads().parentPort.postMessage([_types.PARENT_MESSAGE_CUSTOM, (0, _safeMessageTransferring.packMessage)(message)]);
} else {
throw error;
}
}
} else if (typeof parentProcess.send === 'function') {
try {
parentProcess.send([_types.PARENT_MESSAGE_CUSTOM, message]);
} catch (error) {
if ((0, _jestUtil().isError)(error) &&
// if .send is a function, it's a serialization issue
!error.message.includes('.send is not a function')) {
// Apply specific serialization only in error cases
// to avoid affecting performance in regular cases.
parentProcess.send([_types.PARENT_MESSAGE_CUSTOM, (0, _safeMessageTransferring.packMessage)(message)]);
} else {
throw error;
}
}
} else {
throw new TypeError('"messageParent" can only be used inside a worker');
}
}
/***/ },
/***/ "./src/workers/safeMessageTransferring.ts"
(__unused_webpack_module, exports) {
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.packMessage = packMessage;
exports.unpackMessage = unpackMessage;
function _structuredClone() {
const data = require("@ungap/structured-clone");
_structuredClone = function () {
return data;
};
return data;
}
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
function packMessage(message) {
return {
__STRUCTURED_CLONE_SERIALIZED__: true,
/**
* Use the `json: true` option to avoid errors
* caused by `function` or `symbol` types.
* It's not ideal to lose `function` and `symbol` types,
* but reliability is more important.
*/
data: (0, _structuredClone().serialize)(message, {
json: true
})
};
}
function isTransferringContainer(message) {
return message != null && typeof message === 'object' && '__STRUCTURED_CLONE_SERIALIZED__' in message && 'data' in message;
}
function unpackMessage(message) {
if (isTransferringContainer(message)) {
return (0, _structuredClone().deserialize)(message.data);
}
return message;
}
/***/ }
/******/ });
/************************************************************************/
/******/ // The module cache
/******/ var __webpack_module_cache__ = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ var cachedModule = __webpack_module_cache__[moduleId];
/******/ if (cachedModule !== undefined) {
/******/ return cachedModule.exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = __webpack_module_cache__[moduleId] = {
/******/ // no module.id needed
/******/ // no module.loaded needed
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
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/******/ // Return the exports of the module
/******/ return module.exports;
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/************************************************************************/
var __webpack_exports__ = {};
// This entry needs to be wrapped in an IIFE because it uses a non-standard name for the exports (exports).
(() => {
var exports = __webpack_exports__;
Object.defineProperty(exports, "__esModule", ({
value: true
}));
Object.defineProperty(exports, "FifoQueue", ({
enumerable: true,
get: function () {
return _FifoQueue.default;
}
}));
Object.defineProperty(exports, "PriorityQueue", ({
enumerable: true,
get: function () {
return _PriorityQueue.default;
}
}));
exports.Worker = void 0;
Object.defineProperty(exports, "messageParent", ({
enumerable: true,
get: function () {
return _messageParent.default;
}
}));
function _nodeOs() {
const data = require("node:os");
_nodeOs = function () {
return data;
};
return data;
}
function _nodePath() {
const data = require("node:path");
_nodePath = function () {
return data;
};
return data;
}
function _nodeUrl() {
const data = require("node:url");
_nodeUrl = function () {
return data;
};
return data;
}
var _Farm = _interopRequireDefault(__webpack_require__("./src/Farm.ts"));
var _WorkerPool = _interopRequireDefault(__webpack_require__("./src/WorkerPool.ts"));
var _PriorityQueue = _interopRequireDefault(__webpack_require__("./src/PriorityQueue.ts"));
var _FifoQueue = _interopRequireDefault(__webpack_require__("./src/FifoQueue.ts"));
var _messageParent = _interopRequireDefault(__webpack_require__("./src/workers/messageParent.ts"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
InkScribe/node_modules/jest-worker/build/index.js
Line 851 in 5d2c7c6