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Comparing version 6.5.1 to 7.0.0

dist/worker.min.js
dist/worker.min.js.map

526

dist/worker.js

@@ -7,4 +7,4 @@ /**

*
* @version 6.5.1
* @date 2023-10-11
* @version 7.0.0
* @date 2023-10-25
*

@@ -27,294 +27,264 @@ * @license

/******/ (function() { // webpackBootstrap
/******/ var __webpack_modules__ = ({
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.worker = factory());
})(this, (function () { 'use strict';
/***/ 577:
/***/ (function(module) {
function getDefaultExportFromCjs (x) {
return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}
/**
* The helper class for transferring data from the worker to the main thread.
*
* @param {Object} message The object to deliver to the main thread.
* @param {Object[]} transfer An array of transferable Objects to transfer ownership of.
*/
function Transfer(message, transfer) {
this.message = message;
this.transfer = transfer;
}
module.exports = Transfer;
var worker$1 = {};
/***/ })
/**
* The helper class for transferring data from the worker to the main thread.
*
* @param {Object} message The object to deliver to the main thread.
* @param {Object[]} transfer An array of transferable Objects to transfer ownership of.
*/
function Transfer(message, transfer) {
this.message = message;
this.transfer = transfer;
}
var transfer = Transfer;
/******/ });
/************************************************************************/
/******/ // 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__);
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
var __webpack_exports__ = {};
// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk.
!function() {
var exports = __webpack_exports__;
var __webpack_unused_export__;
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
/**
* worker must be started as a child process or a web worker.
* It listens for RPC messages from the parent process.
*/
var Transfer = __webpack_require__(577);
/**
* worker must be started as a child process or a web worker.
* It listens for RPC messages from the parent process.
*/
(function (exports) {
var Transfer = transfer;
// source of inspiration: https://github.com/sindresorhus/require-fool-webpack
var requireFoolWebpack = eval('typeof require !== \'undefined\'' + ' ? require' + ' : function (module) { throw new Error(\'Module " + module + " not found.\') }');
/**
* Special message sent by parent which causes the worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
/**
* Special message sent by parent which causes the worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
// var nodeOSPlatform = require('./environment').nodeOSPlatform;
// var nodeOSPlatform = require('./environment').nodeOSPlatform;
// create a worker API for sending and receiving messages which works both on
// node.js and in the browser
var worker = {
exit: function () {}
};
if (typeof self !== 'undefined' && typeof postMessage === 'function' && typeof addEventListener === 'function') {
// worker in the browser
worker.on = function (event, callback) {
addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message) {
postMessage(message);
};
} else if (typeof process !== 'undefined') {
// node.js
// create a worker API for sending and receiving messages which works both on
// node.js and in the browser
var worker = {
exit: function exit() {}
};
if (typeof self !== 'undefined' && typeof postMessage === 'function' && typeof addEventListener === 'function') {
// worker in the browser
worker.on = function (event, callback) {
addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message) {
postMessage(message);
};
} else if (typeof process !== 'undefined') {
// node.js
var WorkerThreads;
try {
WorkerThreads = require('worker_threads');
} catch (error) {
if (typeof error === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') ; else {
throw error;
}
}
if (WorkerThreads && /* if there is a parentPort, we are in a WorkerThread */
WorkerThreads.parentPort !== null) {
var parentPort = WorkerThreads.parentPort;
worker.send = parentPort.postMessage.bind(parentPort);
worker.on = parentPort.on.bind(parentPort);
worker.exit = process.exit.bind(process);
} else {
worker.on = process.on.bind(process);
// ignore transfer argument since it is not supported by process
worker.send = function (message) {
process.send(message);
};
// register disconnect handler only for subprocess worker to exit when parent is killed unexpectedly
worker.on('disconnect', function () {
process.exit(1);
});
worker.exit = process.exit.bind(process);
}
} else {
throw new Error('Script must be executed as a worker');
}
function convertError(error) {
return Object.getOwnPropertyNames(error).reduce(function (product, name) {
return Object.defineProperty(product, name, {
value: error[name],
enumerable: true
});
}, {});
}
var WorkerThreads;
try {
WorkerThreads = requireFoolWebpack('worker_threads');
} catch (error) {
if (_typeof(error) === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {
// no worker_threads, fallback to sub-process based workers
} else {
throw error;
}
}
if (WorkerThreads && /* if there is a parentPort, we are in a WorkerThread */
WorkerThreads.parentPort !== null) {
var parentPort = WorkerThreads.parentPort;
worker.send = parentPort.postMessage.bind(parentPort);
worker.on = parentPort.on.bind(parentPort);
worker.exit = process.exit.bind(process);
} else {
worker.on = process.on.bind(process);
// ignore transfer argument since it is not supported by process
worker.send = function (message) {
process.send(message);
};
// register disconnect handler only for subprocess worker to exit when parent is killed unexpectedly
worker.on('disconnect', function () {
process.exit(1);
});
worker.exit = process.exit.bind(process);
}
} else {
throw new Error('Script must be executed as a worker');
}
function convertError(error) {
return Object.getOwnPropertyNames(error).reduce(function (product, name) {
return Object.defineProperty(product, name, {
value: error[name],
enumerable: true
});
}, {});
}
/**
* Test whether a value is a Promise via duck typing.
* @param {*} value
* @returns {boolean} Returns true when given value is an object
* having functions `then` and `catch`.
*/
function isPromise(value) {
return value && typeof value.then === 'function' && typeof value.catch === 'function';
}
/**
* Test whether a value is a Promise via duck typing.
* @param {*} value
* @returns {boolean} Returns true when given value is an object
* having functions `then` and `catch`.
*/
function isPromise(value) {
return value && typeof value.then === 'function' && typeof value["catch"] === 'function';
}
// functions available externally
worker.methods = {};
// functions available externally
worker.methods = {};
/**
* Execute a function with provided arguments
* @param {String} fn Stringified function
* @param {Array} [args] Function arguments
* @returns {*}
*/
worker.methods.run = function run(fn, args) {
var f = new Function('return (' + fn + ').apply(null, arguments);');
return f.apply(f, args);
};
/**
* Execute a function with provided arguments
* @param {String} fn Stringified function
* @param {Array} [args] Function arguments
* @returns {*}
*/
worker.methods.run = function run(fn, args) {
var f = new Function('return (' + fn + ').apply(null, arguments);');
return f.apply(f, args);
};
/**
* Get a list with methods available on this worker
* @return {String[]} methods
*/
worker.methods.methods = function methods() {
return Object.keys(worker.methods);
};
/**
* Get a list with methods available on this worker
* @return {String[]} methods
*/
worker.methods.methods = function methods() {
return Object.keys(worker.methods);
};
/**
* Custom handler for when the worker is terminated.
*/
worker.terminationHandler = undefined;
/**
* Custom handler for when the worker is terminated.
*/
worker.terminationHandler = undefined;
/**
* Cleanup and exit the worker.
* @param {Number} code
* @returns
*/
worker.cleanupAndExit = function (code) {
var _exit = function () {
worker.exit(code);
};
if (!worker.terminationHandler) {
return _exit();
}
var result = worker.terminationHandler(code);
if (isPromise(result)) {
result.then(_exit, _exit);
} else {
_exit();
}
};
var currentRequestId = null;
worker.on('message', function (request) {
if (request === TERMINATE_METHOD_ID) {
return worker.cleanupAndExit(0);
}
try {
var method = worker.methods[request.method];
if (method) {
currentRequestId = request.id;
/**
* Cleanup and exit the worker.
* @param {Number} code
* @returns
*/
worker.cleanupAndExit = function (code) {
var _exit = function _exit() {
worker.exit(code);
};
if (!worker.terminationHandler) {
return _exit();
}
var result = worker.terminationHandler(code);
if (isPromise(result)) {
result.then(_exit, _exit);
} else {
_exit();
}
};
var currentRequestId = null;
worker.on('message', function (request) {
if (request === TERMINATE_METHOD_ID) {
return worker.cleanupAndExit(0);
}
try {
var method = worker.methods[request.method];
if (method) {
currentRequestId = request.id;
// execute the function
var result = method.apply(method, request.params);
if (isPromise(result)) {
// promise returned, resolve this and then return
result.then(function (result) {
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
}).catch(function (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
currentRequestId = null;
});
} else {
// immediate result
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
}
} else {
throw new Error('Unknown method "' + request.method + '"');
}
} catch (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
}
});
// execute the function
var result = method.apply(method, request.params);
if (isPromise(result)) {
// promise returned, resolve this and then return
result.then(function (result) {
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
})["catch"](function (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
currentRequestId = null;
});
} else {
// immediate result
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
}
} else {
throw new Error('Unknown method "' + request.method + '"');
}
} catch (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
}
});
/**
* Register methods to the worker
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
worker.register = function (methods, options) {
if (methods) {
for (var name in methods) {
if (methods.hasOwnProperty(name)) {
worker.methods[name] = methods[name];
}
}
}
if (options) {
worker.terminationHandler = options.onTerminate;
}
worker.send('ready');
};
worker.emit = function (payload) {
if (currentRequestId) {
if (payload instanceof Transfer) {
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload.message
}, payload.transfer);
return;
}
worker.send({
id: currentRequestId,
isEvent: true,
payload
});
}
};
{
exports.add = worker.register;
exports.emit = worker.emit;
}
})(worker$1);
var worker = /*@__PURE__*/getDefaultExportFromCjs(worker$1);
/**
* Register methods to the worker
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
worker.register = function (methods, options) {
if (methods) {
for (var name in methods) {
if (methods.hasOwnProperty(name)) {
worker.methods[name] = methods[name];
}
}
}
if (options) {
worker.terminationHandler = options.onTerminate;
}
worker.send('ready');
};
worker.emit = function (payload) {
if (currentRequestId) {
if (payload instanceof Transfer) {
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload.message
}, payload.transfer);
return;
}
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload
});
}
};
if (true) {
__webpack_unused_export__ = worker.register;
__webpack_unused_export__ = worker.emit;
}
}();
/******/ })()
;
//# sourceMappingURL=worker.js.map
return worker;
}));
//# sourceMappingURL=worker.js.map

2886

dist/workerpool.js

@@ -7,4 +7,4 @@ /**

*
* @version 6.5.1
* @date 2023-10-11
* @version 7.0.0
* @date 2023-10-25
*

@@ -27,1461 +27,1448 @@ * @license

(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define("workerpool", [], factory);
else if(typeof exports === 'object')
exports["workerpool"] = factory();
else
root["workerpool"] = factory();
})((typeof self !== 'undefined' ? self : this), function() {
return /******/ (function() { // webpackBootstrap
/******/ var __webpack_modules__ = ({
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.workerpool = {}));
})(this, (function (exports) { 'use strict';
/***/ 345:
/***/ (function(module, __unused_webpack_exports, __webpack_require__) {
var src = {};
var Promise = __webpack_require__(219);
var WorkerHandler = __webpack_require__(751);
var environment = __webpack_require__(828);
var DebugPortAllocator = __webpack_require__(833);
var DEBUG_PORT_ALLOCATOR = new DebugPortAllocator();
/**
* A pool to manage workers
* @param {String} [script] Optional worker script
* @param {WorkerPoolOptions} [options] See docs
* @constructor
*/
function Pool(script, options) {
if (typeof script === 'string') {
this.script = script || null;
} else {
this.script = null;
options = script;
}
this.workers = []; // queue with all workers
this.tasks = []; // queue with tasks awaiting execution
var environment$1 = {exports: {}};
options = options || {};
this.forkArgs = Object.freeze(options.forkArgs || []);
this.forkOpts = Object.freeze(options.forkOpts || {});
this.workerOpts = Object.freeze(options.workerOpts || {});
this.workerThreadOpts = Object.freeze(options.workerThreadOpts || {});
this.debugPortStart = options.debugPortStart || 43210;
this.nodeWorker = options.nodeWorker;
this.workerType = options.workerType || options.nodeWorker || 'auto';
this.maxQueueSize = options.maxQueueSize || Infinity;
this.workerTerminateTimeout = options.workerTerminateTimeout || 1000;
this.onCreateWorker = options.onCreateWorker || function () {
return null;
};
this.onTerminateWorker = options.onTerminateWorker || function () {
return null;
};
(function (module) {
// source: https://github.com/flexdinesh/browser-or-node
var isNode = function (nodeProcess) {
return typeof nodeProcess !== 'undefined' && nodeProcess.versions != null && nodeProcess.versions.node != null;
};
module.exports.isNode = isNode;
// configuration
if (options && 'maxWorkers' in options) {
validateMaxWorkers(options.maxWorkers);
this.maxWorkers = options.maxWorkers;
} else {
this.maxWorkers = Math.max((environment.cpus || 4) - 1, 1);
}
if (options && 'minWorkers' in options) {
if (options.minWorkers === 'max') {
this.minWorkers = this.maxWorkers;
} else {
validateMinWorkers(options.minWorkers);
this.minWorkers = options.minWorkers;
this.maxWorkers = Math.max(this.minWorkers, this.maxWorkers); // in case minWorkers is higher than maxWorkers
}
// determines the JavaScript platform: browser or node
module.exports.platform = typeof process !== 'undefined' && isNode(process) ? 'node' : 'browser';
this._ensureMinWorkers();
}
this._boundNext = this._next.bind(this);
if (this.workerType === 'thread') {
WorkerHandler.ensureWorkerThreads();
}
}
// determines whether the code is running in main thread or not
// note that in node.js we have to check both worker_thread and child_process
var worker_threads = module.exports.platform === 'node' && require('worker_threads');
module.exports.isMainThread = module.exports.platform === 'node' ? (!worker_threads || worker_threads.isMainThread) && !process.connected : typeof Window !== 'undefined';
/**
* Execute a function on a worker.
*
* Example usage:
*
* var pool = new Pool()
*
* // call a function available on the worker
* pool.exec('fibonacci', [6])
*
* // offload a function
* function add(a, b) {
* return a + b
* };
* pool.exec(add, [2, 4])
* .then(function (result) {
* console.log(result); // outputs 6
* })
* .catch(function(error) {
* console.log(error);
* });
*
* @param {String | Function} method Function name or function.
* If `method` is a string, the corresponding
* method on the worker will be executed
* If `method` is a Function, the function
* will be stringified and executed via the
* workers built-in function `run(fn, args)`.
* @param {Array} [params] Function arguments applied when calling the function
* @param {ExecOptions} [options] Options object
* @return {Promise.<*, Error>} result
*/
Pool.prototype.exec = function (method, params, options) {
// validate type of arguments
if (params && !Array.isArray(params)) {
throw new TypeError('Array expected as argument "params"');
}
if (typeof method === 'string') {
var resolver = Promise.defer();
if (this.tasks.length >= this.maxQueueSize) {
throw new Error('Max queue size of ' + this.maxQueueSize + ' reached');
}
// determines the number of cpus available
module.exports.cpus = module.exports.platform === 'browser' ? self.navigator.hardwareConcurrency : require('os').cpus().length;
})(environment$1);
var environmentExports = environment$1.exports;
// add a new task to the queue
var tasks = this.tasks;
var task = {
method: method,
params: params,
resolver: resolver,
timeout: null,
options: options
};
tasks.push(task);
var _Promise$1;
var hasRequired_Promise;
function require_Promise() {
if (hasRequired_Promise) return _Promise$1;
hasRequired_Promise = 1;
// replace the timeout method of the Promise with our own,
// which starts the timer as soon as the task is actually started
var originalTimeout = resolver.promise.timeout;
resolver.promise.timeout = function timeout(delay) {
if (tasks.indexOf(task) !== -1) {
// task is still queued -> start the timer later on
task.timeout = delay;
return resolver.promise;
} else {
// task is already being executed -> start timer immediately
return originalTimeout.call(resolver.promise, delay);
/**
* Promise
*
* Inspired by https://gist.github.com/RubaXa/8501359 from RubaXa <trash@rubaxa.org>
*
* @param {Function} handler Called as handler(resolve: Function, reject: Function)
* @param {Promise} [parent] Parent promise for propagation of cancel and timeout
*/
function Promise(handler, parent) {
var me = this;
if (!(this instanceof Promise)) {
throw new SyntaxError('Constructor must be called with the new operator');
}
};
if (typeof handler !== 'function') {
throw new SyntaxError('Function parameter handler(resolve, reject) missing');
}
var _onSuccess = [];
var _onFail = [];
// trigger task execution
this._next();
return resolver.promise;
} else if (typeof method === 'function') {
// send stringified function and function arguments to worker
return this.exec('run', [String(method), params]);
} else {
throw new TypeError('Function or string expected as argument "method"');
}
};
// status
this.resolved = false;
this.rejected = false;
this.pending = true;
/**
* Create a proxy for current worker. Returns an object containing all
* methods available on the worker. The methods always return a promise.
*
* @return {Promise.<Object, Error>} proxy
*/
Pool.prototype.proxy = function () {
if (arguments.length > 0) {
throw new Error('No arguments expected');
}
var pool = this;
return this.exec('methods').then(function (methods) {
var proxy = {};
methods.forEach(function (method) {
proxy[method] = function () {
return pool.exec(method, Array.prototype.slice.call(arguments));
/**
* Process onSuccess and onFail callbacks: add them to the queue.
* Once the promise is resolve, the function _promise is replace.
* @param {Function} onSuccess
* @param {Function} onFail
* @private
*/
var _process = function (onSuccess, onFail) {
_onSuccess.push(onSuccess);
_onFail.push(onFail);
};
});
return proxy;
});
};
/**
* Creates new array with the results of calling a provided callback function
* on every element in this array.
* @param {Array} array
* @param {function} callback Function taking two arguments:
* `callback(currentValue, index)`
* @return {Promise.<Array>} Returns a promise which resolves with an Array
* containing the results of the callback function
* executed for each of the array elements.
*/
/* TODO: implement map
Pool.prototype.map = function (array, callback) {
};
*/
/**
* Add an onSuccess callback and optionally an onFail callback to the Promise
* @param {Function} onSuccess
* @param {Function} [onFail]
* @returns {Promise} promise
*/
this.then = function (onSuccess, onFail) {
return new Promise(function (resolve, reject) {
var s = onSuccess ? _then(onSuccess, resolve, reject) : resolve;
var f = onFail ? _then(onFail, resolve, reject) : reject;
_process(s, f);
}, me);
};
/**
* Grab the first task from the queue, find a free worker, and assign the
* worker to the task.
* @protected
*/
Pool.prototype._next = function () {
if (this.tasks.length > 0) {
// there are tasks in the queue
/**
* Resolve the promise
* @param {*} result
* @type {Function}
*/
var _resolve = function (result) {
// update status
me.resolved = true;
me.rejected = false;
me.pending = false;
_onSuccess.forEach(function (fn) {
fn(result);
});
_process = function (onSuccess, onFail) {
onSuccess(result);
};
_resolve = _reject = function () {};
return me;
};
// find an available worker
var worker = this._getWorker();
if (worker) {
// get the first task from the queue
var me = this;
var task = this.tasks.shift();
// check if the task is still pending (and not cancelled -> promise rejected)
if (task.resolver.promise.pending) {
// send the request to the worker
var promise = worker.exec(task.method, task.params, task.resolver, task.options).then(me._boundNext)["catch"](function () {
// if the worker crashed and terminated, remove it from the pool
if (worker.terminated) {
return me._removeWorker(worker);
}
}).then(function () {
me._next(); // trigger next task in the queue
/**
* Reject the promise
* @param {Error} error
* @type {Function}
*/
var _reject = function (error) {
// update status
me.resolved = false;
me.rejected = true;
me.pending = false;
_onFail.forEach(function (fn) {
fn(error);
});
_process = function (onSuccess, onFail) {
onFail(error);
};
_resolve = _reject = function () {};
return me;
};
// start queued timer now
if (typeof task.timeout === 'number') {
promise.timeout(task.timeout);
/**
* Cancel te promise. This will reject the promise with a CancellationError
* @returns {Promise} self
*/
this.cancel = function () {
if (parent) {
parent.cancel();
} else {
_reject(new CancellationError());
}
} else {
// The task taken was already complete (either rejected or resolved), so just trigger next task in the queue
me._next();
}
return me;
};
/**
* Set a timeout for the promise. If the promise is not resolved within
* the time, the promise will be cancelled and a TimeoutError is thrown.
* If the promise is resolved in time, the timeout is removed.
* @param {number} delay Delay in milliseconds
* @returns {Promise} self
*/
this.timeout = function (delay) {
if (parent) {
parent.timeout(delay);
} else {
var timer = setTimeout(function () {
_reject(new TimeoutError('Promise timed out after ' + delay + ' ms'));
}, delay);
me.always(function () {
clearTimeout(timer);
});
}
return me;
};
// attach handler passing the resolve and reject functions
handler(function (result) {
_resolve(result);
}, function (error) {
_reject(error);
});
}
}
};
/**
* Get an available worker. If no worker is available and the maximum number
* of workers isn't yet reached, a new worker will be created and returned.
* If no worker is available and the maximum number of workers is reached,
* null will be returned.
*
* @return {WorkerHandler | null} worker
* @private
*/
Pool.prototype._getWorker = function () {
// find a non-busy worker
var workers = this.workers;
for (var i = 0; i < workers.length; i++) {
var worker = workers[i];
if (worker.busy() === false) {
return worker;
/**
* Execute given callback, then call resolve/reject based on the returned result
* @param {Function} callback
* @param {Function} resolve
* @param {Function} reject
* @returns {Function}
* @private
*/
function _then(callback, resolve, reject) {
return function (result) {
try {
var res = callback(result);
if (res && typeof res.then === 'function' && typeof res['catch'] === 'function') {
// method returned a promise
res.then(resolve, reject);
} else {
resolve(res);
}
} catch (error) {
reject(error);
}
};
}
}
if (workers.length < this.maxWorkers) {
// create a new worker
worker = this._createWorkerHandler();
workers.push(worker);
return worker;
}
return null;
};
/**
* Remove a worker from the pool.
* Attempts to terminate worker if not already terminated, and ensures the minimum
* pool size is met.
* @param {WorkerHandler} worker
* @return {Promise<WorkerHandler>}
* @protected
*/
Pool.prototype._removeWorker = function (worker) {
var me = this;
DEBUG_PORT_ALLOCATOR.releasePort(worker.debugPort);
// _removeWorker will call this, but we need it to be removed synchronously
this._removeWorkerFromList(worker);
// If minWorkers set, spin up new workers to replace the crashed ones
this._ensureMinWorkers();
// terminate the worker (if not already terminated)
return new Promise(function (resolve, reject) {
worker.terminate(false, function (err) {
me.onTerminateWorker({
forkArgs: worker.forkArgs,
forkOpts: worker.forkOpts,
workerThreadOpts: worker.workerThreadOpts,
script: worker.script
});
if (err) {
reject(err);
} else {
resolve(worker);
}
});
});
};
/**
* Add an onFail callback to the Promise
* @param {Function} onFail
* @returns {Promise} promise
*/
Promise.prototype['catch'] = function (onFail) {
return this.then(null, onFail);
};
/**
* Remove a worker from the pool list.
* @param {WorkerHandler} worker
* @protected
*/
Pool.prototype._removeWorkerFromList = function (worker) {
// remove from the list with workers
var index = this.workers.indexOf(worker);
if (index !== -1) {
this.workers.splice(index, 1);
}
};
// TODO: add support for Promise.catch(Error, callback)
// TODO: add support for Promise.catch(Error, Error, callback)
/**
* Close all active workers. Tasks currently being executed will be finished first.
* @param {boolean} [force=false] If false (default), the workers are terminated
* after finishing all tasks currently in
* progress. If true, the workers will be
* terminated immediately.
* @param {number} [timeout] If provided and non-zero, worker termination promise will be rejected
* after timeout if worker process has not been terminated.
* @return {Promise.<void, Error>}
*/
Pool.prototype.terminate = function (force, timeout) {
var me = this;
/**
* Execute given callback when the promise either resolves or rejects.
* @param {Function} fn
* @returns {Promise} promise
*/
Promise.prototype.always = function (fn) {
return this.then(fn, fn);
};
// cancel any pending tasks
this.tasks.forEach(function (task) {
task.resolver.reject(new Error('Pool terminated'));
});
this.tasks.length = 0;
var f = function f(worker) {
DEBUG_PORT_ALLOCATOR.releasePort(worker.debugPort);
this._removeWorkerFromList(worker);
};
var removeWorker = f.bind(this);
var promises = [];
var workers = this.workers.slice();
workers.forEach(function (worker) {
var termPromise = worker.terminateAndNotify(force, timeout).then(removeWorker).always(function () {
me.onTerminateWorker({
forkArgs: worker.forkArgs,
forkOpts: worker.forkOpts,
workerThreadOpts: worker.workerThreadOpts,
script: worker.script
/**
* Create a promise which resolves when all provided promises are resolved,
* and fails when any of the promises resolves.
* @param {Promise[]} promises
* @returns {Promise} promise
*/
Promise.all = function (promises) {
return new Promise(function (resolve, reject) {
var remaining = promises.length,
results = [];
if (remaining) {
promises.forEach(function (p, i) {
p.then(function (result) {
results[i] = result;
remaining--;
if (remaining == 0) {
resolve(results);
}
}, function (error) {
remaining = 0;
reject(error);
});
});
} else {
resolve(results);
}
});
});
promises.push(termPromise);
});
return Promise.all(promises);
};
};
/**
* Retrieve statistics on tasks and workers.
* @return {{totalWorkers: number, busyWorkers: number, idleWorkers: number, pendingTasks: number, activeTasks: number}} Returns an object with statistics
*/
Pool.prototype.stats = function () {
var totalWorkers = this.workers.length;
var busyWorkers = this.workers.filter(function (worker) {
return worker.busy();
}).length;
return {
totalWorkers: totalWorkers,
busyWorkers: busyWorkers,
idleWorkers: totalWorkers - busyWorkers,
pendingTasks: this.tasks.length,
activeTasks: busyWorkers
};
};
/**
* Create a promise resolver
* @returns {{promise: Promise, resolve: Function, reject: Function}} resolver
*/
Promise.defer = function () {
var resolver = {};
resolver.promise = new Promise(function (resolve, reject) {
resolver.resolve = resolve;
resolver.reject = reject;
});
return resolver;
};
/**
* Ensures that a minimum of minWorkers is up and running
* @protected
*/
Pool.prototype._ensureMinWorkers = function () {
if (this.minWorkers) {
for (var i = this.workers.length; i < this.minWorkers; i++) {
this.workers.push(this._createWorkerHandler());
/**
* Create a cancellation error
* @param {String} [message]
* @extends Error
*/
function CancellationError(message) {
this.message = message || 'promise cancelled';
this.stack = new Error().stack;
}
}
};
CancellationError.prototype = new Error();
CancellationError.prototype.constructor = Error;
CancellationError.prototype.name = 'CancellationError';
Promise.CancellationError = CancellationError;
/**
* Helper function to create a new WorkerHandler and pass all options.
* @return {WorkerHandler}
* @private
*/
Pool.prototype._createWorkerHandler = function () {
var overriddenParams = this.onCreateWorker({
forkArgs: this.forkArgs,
forkOpts: this.forkOpts,
workerOpts: this.workerOpts,
workerThreadOpts: this.workerThreadOpts,
script: this.script
}) || {};
return new WorkerHandler(overriddenParams.script || this.script, {
forkArgs: overriddenParams.forkArgs || this.forkArgs,
forkOpts: overriddenParams.forkOpts || this.forkOpts,
workerOpts: overriddenParams.workerOpts || this.workerOpts,
workerThreadOpts: overriddenParams.workerThreadOpts || this.workerThreadOpts,
debugPort: DEBUG_PORT_ALLOCATOR.nextAvailableStartingAt(this.debugPortStart),
workerType: this.workerType,
workerTerminateTimeout: this.workerTerminateTimeout
});
};
/**
* Ensure that the maxWorkers option is an integer >= 1
* @param {*} maxWorkers
* @returns {boolean} returns true maxWorkers has a valid value
*/
function validateMaxWorkers(maxWorkers) {
if (!isNumber(maxWorkers) || !isInteger(maxWorkers) || maxWorkers < 1) {
throw new TypeError('Option maxWorkers must be an integer number >= 1');
/**
* Create a timeout error
* @param {String} [message]
* @extends Error
*/
function TimeoutError(message) {
this.message = message || 'timeout exceeded';
this.stack = new Error().stack;
}
TimeoutError.prototype = new Error();
TimeoutError.prototype.constructor = Error;
TimeoutError.prototype.name = 'TimeoutError';
Promise.TimeoutError = TimeoutError;
_Promise$1 = Promise;
return _Promise$1;
}
}
/**
* Ensure that the minWorkers option is an integer >= 0
* @param {*} minWorkers
* @returns {boolean} returns true when minWorkers has a valid value
*/
function validateMinWorkers(minWorkers) {
if (!isNumber(minWorkers) || !isInteger(minWorkers) || minWorkers < 0) {
throw new TypeError('Option minWorkers must be an integer number >= 0');
}
}
var WorkerHandler = {exports: {}};
/**
* Test whether a variable is a number
* @param {*} value
* @returns {boolean} returns true when value is a number
*/
function isNumber(value) {
return typeof value === 'number';
}
/**
* Test whether a number is an integer
* @param {number} value
* @returns {boolean} Returns true if value is an integer
*/
function isInteger(value) {
return Math.round(value) == value;
}
module.exports = Pool;
/***/ }),
/***/ 219:
/***/ (function(module) {
"use strict";
/**
* Promise
*
* Inspired by https://gist.github.com/RubaXa/8501359 from RubaXa <trash@rubaxa.org>
*
* @param {Function} handler Called as handler(resolve: Function, reject: Function)
* @param {Promise} [parent] Parent promise for propagation of cancel and timeout
*/
function Promise(handler, parent) {
var me = this;
if (!(this instanceof Promise)) {
throw new SyntaxError('Constructor must be called with the new operator');
}
if (typeof handler !== 'function') {
throw new SyntaxError('Function parameter handler(resolve, reject) missing');
}
var _onSuccess = [];
var _onFail = [];
// status
this.resolved = false;
this.rejected = false;
this.pending = true;
/**
* Process onSuccess and onFail callbacks: add them to the queue.
* Once the promise is resolve, the function _promise is replace.
* @param {Function} onSuccess
* @param {Function} onFail
* @private
* embeddedWorker.js contains an embedded version of worker.js.
* This file is automatically generated,
* changes made in this file will be overwritten.
*/
var _process = function _process(onSuccess, onFail) {
_onSuccess.push(onSuccess);
_onFail.push(onFail);
};
var embeddedWorker;
var hasRequiredEmbeddedWorker;
function requireEmbeddedWorker() {
if (hasRequiredEmbeddedWorker) return embeddedWorker;
hasRequiredEmbeddedWorker = 1;
embeddedWorker = "!function(e,n){\"object\"==typeof exports&&\"undefined\"!=typeof module?module.exports=n():\"function\"==typeof define&&define.amd?define(n):(e=\"undefined\"!=typeof globalThis?globalThis:e||self).worker=n()}(this,(function(){\"use strict\";function e(e){return e&&e.__esModule&&Object.prototype.hasOwnProperty.call(e,\"default\")?e.default:e}var n={};var t=function(e,n){this.message=e,this.transfer=n};return function(e){var n=t,r={exit:function(){}};if(\"undefined\"!=typeof self&&\"function\"==typeof postMessage&&\"function\"==typeof addEventListener)r.on=function(e,n){addEventListener(e,(function(e){n(e.data)}))},r.send=function(e){postMessage(e)};else{if(\"undefined\"==typeof process)throw new Error(\"Script must be executed as a worker\");var o;try{o=require(\"worker_threads\")}catch(e){if(\"object\"!=typeof e||null===e||\"MODULE_NOT_FOUND\"!==e.code)throw e}if(o&&null!==o.parentPort){var i=o.parentPort;r.send=i.postMessage.bind(i),r.on=i.on.bind(i),r.exit=process.exit.bind(process)}else r.on=process.on.bind(process),r.send=function(e){process.send(e)},r.on(\"disconnect\",(function(){process.exit(1)})),r.exit=process.exit.bind(process)}function s(e){return Object.getOwnPropertyNames(e).reduce((function(n,t){return Object.defineProperty(n,t,{value:e[t],enumerable:!0})}),{})}function d(e){return e&&\"function\"==typeof e.then&&\"function\"==typeof e.catch}r.methods={},r.methods.run=function(e,n){var t=new Function(\"return (\"+e+\").apply(null, arguments);\");return t.apply(t,n)},r.methods.methods=function(){return Object.keys(r.methods)},r.terminationHandler=void 0,r.cleanupAndExit=function(e){var n=function(){r.exit(e)};if(!r.terminationHandler)return n();var t=r.terminationHandler(e);d(t)?t.then(n,n):n()};var u=null;r.on(\"message\",(function(e){if(\"__workerpool-terminate__\"===e)return r.cleanupAndExit(0);try{var t=r.methods[e.method];if(!t)throw new Error('Unknown method \"'+e.method+'\"');u=e.id;var o=t.apply(t,e.params);d(o)?o.then((function(t){t instanceof n?r.send({id:e.id,result:t.message,error:null},t.transfer):r.send({id:e.id,result:t,error:null}),u=null})).catch((function(n){r.send({id:e.id,result:null,error:s(n)}),u=null})):(o instanceof n?r.send({id:e.id,result:o.message,error:null},o.transfer):r.send({id:e.id,result:o,error:null}),u=null)}catch(n){r.send({id:e.id,result:null,error:s(n)})}})),r.register=function(e,n){if(e)for(var t in e)e.hasOwnProperty(t)&&(r.methods[t]=e[t]);n&&(r.terminationHandler=n.onTerminate),r.send(\"ready\")},r.emit=function(e){if(u){if(e instanceof n)return void r.send({id:u,isEvent:!0,payload:e.message},e.transfer);r.send({id:u,isEvent:!0,payload:e})}},e.add=r.register,e.emit=r.emit}(n),e(n)}));\n//# sourceMappingURL=worker.min.js.map\n";
return embeddedWorker;
}
/**
* Add an onSuccess callback and optionally an onFail callback to the Promise
* @param {Function} onSuccess
* @param {Function} [onFail]
* @returns {Promise} promise
*/
this.then = function (onSuccess, onFail) {
return new Promise(function (resolve, reject) {
var s = onSuccess ? _then(onSuccess, resolve, reject) : resolve;
var f = onFail ? _then(onFail, resolve, reject) : reject;
_process(s, f);
}, me);
};
var hasRequiredWorkerHandler;
function requireWorkerHandler() {
if (hasRequiredWorkerHandler) return WorkerHandler.exports;
hasRequiredWorkerHandler = 1;
var Promise = require_Promise();
var environment = environmentExports;
/**
* Resolve the promise
* @param {*} result
* @type {Function}
*/
var _resolve2 = function _resolve(result) {
// update status
me.resolved = true;
me.rejected = false;
me.pending = false;
_onSuccess.forEach(function (fn) {
fn(result);
});
_process = function _process(onSuccess, onFail) {
onSuccess(result);
};
_resolve2 = _reject2 = function _reject() {};
return me;
};
/**
* Reject the promise
* @param {Error} error
* @type {Function}
*/
var _reject2 = function _reject(error) {
// update status
me.resolved = false;
me.rejected = true;
me.pending = false;
_onFail.forEach(function (fn) {
fn(error);
});
_process = function _process(onSuccess, onFail) {
onFail(error);
};
_resolve2 = _reject2 = function _reject() {};
return me;
};
/**
* Cancel te promise. This will reject the promise with a CancellationError
* @returns {Promise} self
*/
this.cancel = function () {
if (parent) {
parent.cancel();
} else {
_reject2(new CancellationError());
/**
* Special message sent by parent which causes a child process worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
function ensureWorkerThreads() {
var WorkerThreads = tryRequireWorkerThreads();
if (!WorkerThreads) {
throw new Error('WorkerPool: workerType = \'thread\' is not supported, Node >= 11.7.0 required');
}
return WorkerThreads;
}
return me;
};
/**
* Set a timeout for the promise. If the promise is not resolved within
* the time, the promise will be cancelled and a TimeoutError is thrown.
* If the promise is resolved in time, the timeout is removed.
* @param {number} delay Delay in milliseconds
* @returns {Promise} self
*/
this.timeout = function (delay) {
if (parent) {
parent.timeout(delay);
} else {
var timer = setTimeout(function () {
_reject2(new TimeoutError('Promise timed out after ' + delay + ' ms'));
}, delay);
me.always(function () {
clearTimeout(timer);
});
// check whether Worker is supported by the browser
function ensureWebWorker() {
// Workaround for a bug in PhantomJS (Or QtWebkit): https://github.com/ariya/phantomjs/issues/14534
if (typeof Worker !== 'function' && (typeof Worker !== 'object' || typeof Worker.prototype.constructor !== 'function')) {
throw new Error('WorkerPool: Web Workers not supported');
}
}
return me;
};
function tryRequireWorkerThreads() {
try {
return require('worker_threads');
} catch (error) {
if (typeof error === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {
// no worker_threads available (old version of node.js)
return null;
} else {
throw error;
}
}
}
// attach handler passing the resolve and reject functions
handler(function (result) {
_resolve2(result);
}, function (error) {
_reject2(error);
});
}
// get the default worker script
function getDefaultWorker() {
if (environment.platform === 'browser') {
// test whether the browser supports all features that we need
if (typeof Blob === 'undefined') {
throw new Error('Blob not supported by the browser');
}
if (!window.URL || typeof window.URL.createObjectURL !== 'function') {
throw new Error('URL.createObjectURL not supported by the browser');
}
/**
* Execute given callback, then call resolve/reject based on the returned result
* @param {Function} callback
* @param {Function} resolve
* @param {Function} reject
* @returns {Function}
* @private
*/
function _then(callback, resolve, reject) {
return function (result) {
try {
var res = callback(result);
if (res && typeof res.then === 'function' && typeof res['catch'] === 'function') {
// method returned a promise
res.then(resolve, reject);
// use embedded worker.js
var blob = new Blob([requireEmbeddedWorker()], {
type: 'text/javascript'
});
return window.URL.createObjectURL(blob);
} else {
resolve(res);
// use external worker.js in current directory
return __dirname + '/worker.js';
}
} catch (error) {
reject(error);
}
};
}
/**
* Add an onFail callback to the Promise
* @param {Function} onFail
* @returns {Promise} promise
*/
Promise.prototype['catch'] = function (onFail) {
return this.then(null, onFail);
};
// TODO: add support for Promise.catch(Error, callback)
// TODO: add support for Promise.catch(Error, Error, callback)
/**
* Execute given callback when the promise either resolves or rejects.
* @param {Function} fn
* @returns {Promise} promise
*/
Promise.prototype.always = function (fn) {
return this.then(fn, fn);
};
/**
* Create a promise which resolves when all provided promises are resolved,
* and fails when any of the promises resolves.
* @param {Promise[]} promises
* @returns {Promise} promise
*/
Promise.all = function (promises) {
return new Promise(function (resolve, reject) {
var remaining = promises.length,
results = [];
if (remaining) {
promises.forEach(function (p, i) {
p.then(function (result) {
results[i] = result;
remaining--;
if (remaining == 0) {
resolve(results);
function setupWorker(script, options) {
if (options.workerType === 'web') {
// browser only
ensureWebWorker();
return setupBrowserWorker(script, options.workerOpts, Worker);
} else if (options.workerType === 'thread') {
// node.js only
WorkerThreads = ensureWorkerThreads();
return setupWorkerThreadWorker(script, WorkerThreads, options.workerThreadOpts);
} else if (options.workerType === 'process' || !options.workerType) {
// node.js only
return setupProcessWorker(script, resolveForkOptions(options), require('child_process'));
} else {
// options.workerType === 'auto' or undefined
if (environment.platform === 'browser') {
ensureWebWorker();
return setupBrowserWorker(script, options.workerOpts, Worker);
} else {
// environment.platform === 'node'
var WorkerThreads = tryRequireWorkerThreads();
if (WorkerThreads) {
return setupWorkerThreadWorker(script, WorkerThreads, options.workerThreadOpts);
} else {
return setupProcessWorker(script, resolveForkOptions(options), require('child_process'));
}
}, function (error) {
remaining = 0;
reject(error);
}
}
}
function setupBrowserWorker(script, workerOpts, Worker) {
// create the web worker
var worker = new Worker(script, workerOpts);
worker.isBrowserWorker = true;
// add node.js API to the web worker
worker.on = function (event, callback) {
this.addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message, transfer) {
this.postMessage(message, transfer);
};
return worker;
}
function setupWorkerThreadWorker(script, WorkerThreads, workerThreadOptions) {
var worker = new WorkerThreads.Worker(script, {
stdout: false,
// automatically pipe worker.STDOUT to process.STDOUT
stderr: false,
// automatically pipe worker.STDERR to process.STDERR
...workerThreadOptions
});
} else {
resolve(results);
worker.isWorkerThread = true;
worker.send = function (message, transfer) {
this.postMessage(message, transfer);
};
worker.kill = function () {
this.terminate();
return true;
};
worker.disconnect = function () {
this.terminate();
};
return worker;
}
});
};
function setupProcessWorker(script, options, child_process) {
// no WorkerThreads, fallback to sub-process based workers
var worker = child_process.fork(script, options.forkArgs, options.forkOpts);
/**
* Create a promise resolver
* @returns {{promise: Promise, resolve: Function, reject: Function}} resolver
*/
Promise.defer = function () {
var resolver = {};
resolver.promise = new Promise(function (resolve, reject) {
resolver.resolve = resolve;
resolver.reject = reject;
});
return resolver;
};
/**
* Create a cancellation error
* @param {String} [message]
* @extends Error
*/
function CancellationError(message) {
this.message = message || 'promise cancelled';
this.stack = new Error().stack;
}
CancellationError.prototype = new Error();
CancellationError.prototype.constructor = Error;
CancellationError.prototype.name = 'CancellationError';
Promise.CancellationError = CancellationError;
/**
* Create a timeout error
* @param {String} [message]
* @extends Error
*/
function TimeoutError(message) {
this.message = message || 'timeout exceeded';
this.stack = new Error().stack;
}
TimeoutError.prototype = new Error();
TimeoutError.prototype.constructor = Error;
TimeoutError.prototype.name = 'TimeoutError';
Promise.TimeoutError = TimeoutError;
module.exports = Promise;
/***/ }),
/***/ 751:
/***/ (function(module, __unused_webpack_exports, __webpack_require__) {
"use strict";
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
var Promise = __webpack_require__(219);
var environment = __webpack_require__(828);
var requireFoolWebpack = __webpack_require__(397);
/**
* Special message sent by parent which causes a child process worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
function ensureWorkerThreads() {
var WorkerThreads = tryRequireWorkerThreads();
if (!WorkerThreads) {
throw new Error('WorkerPool: workerType = \'thread\' is not supported, Node >= 11.7.0 required');
}
return WorkerThreads;
}
// check whether Worker is supported by the browser
function ensureWebWorker() {
// Workaround for a bug in PhantomJS (Or QtWebkit): https://github.com/ariya/phantomjs/issues/14534
if (typeof Worker !== 'function' && ((typeof Worker === "undefined" ? "undefined" : _typeof(Worker)) !== 'object' || typeof Worker.prototype.constructor !== 'function')) {
throw new Error('WorkerPool: Web Workers not supported');
}
}
function tryRequireWorkerThreads() {
try {
return requireFoolWebpack('worker_threads');
} catch (error) {
if (_typeof(error) === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {
// no worker_threads available (old version of node.js)
return null;
} else {
throw error;
// ignore transfer argument since it is not supported by process
var send = worker.send;
worker.send = function (message) {
return send.call(worker, message);
};
worker.isChildProcess = true;
return worker;
}
}
}
// get the default worker script
function getDefaultWorker() {
if (environment.platform === 'browser') {
// test whether the browser supports all features that we need
if (typeof Blob === 'undefined') {
throw new Error('Blob not supported by the browser');
// add debug flags to child processes if the node inspector is active
function resolveForkOptions(opts) {
opts = opts || {};
var processExecArgv = process.execArgv.join(' ');
var inspectorActive = processExecArgv.indexOf('--inspect') !== -1;
var debugBrk = processExecArgv.indexOf('--debug-brk') !== -1;
var execArgv = [];
if (inspectorActive) {
execArgv.push('--inspect=' + opts.debugPort);
if (debugBrk) {
execArgv.push('--debug-brk');
}
}
process.execArgv.forEach(function (arg) {
if (arg.indexOf('--max-old-space-size') > -1) {
execArgv.push(arg);
}
});
return Object.assign({}, opts, {
forkArgs: opts.forkArgs,
forkOpts: Object.assign({}, opts.forkOpts, {
execArgv: (opts.forkOpts && opts.forkOpts.execArgv || []).concat(execArgv)
})
});
}
if (!window.URL || typeof window.URL.createObjectURL !== 'function') {
throw new Error('URL.createObjectURL not supported by the browser');
}
// use embedded worker.js
var blob = new Blob([__webpack_require__(670)], {
type: 'text/javascript'
});
return window.URL.createObjectURL(blob);
} else {
// use external worker.js in current directory
return __dirname + '/worker.js';
}
}
function setupWorker(script, options) {
if (options.workerType === 'web') {
// browser only
ensureWebWorker();
return setupBrowserWorker(script, options.workerOpts, Worker);
} else if (options.workerType === 'thread') {
// node.js only
WorkerThreads = ensureWorkerThreads();
return setupWorkerThreadWorker(script, WorkerThreads, options.workerThreadOpts);
} else if (options.workerType === 'process' || !options.workerType) {
// node.js only
return setupProcessWorker(script, resolveForkOptions(options), requireFoolWebpack('child_process'));
} else {
// options.workerType === 'auto' or undefined
if (environment.platform === 'browser') {
ensureWebWorker();
return setupBrowserWorker(script, options.workerOpts, Worker);
} else {
// environment.platform === 'node'
var WorkerThreads = tryRequireWorkerThreads();
if (WorkerThreads) {
return setupWorkerThreadWorker(script, WorkerThreads, options.workerThreadOpts);
} else {
return setupProcessWorker(script, resolveForkOptions(options), requireFoolWebpack('child_process'));
/**
* Converts a serialized error to Error
* @param {Object} obj Error that has been serialized and parsed to object
* @return {Error} The equivalent Error.
*/
function objectToError(obj) {
var temp = new Error('');
var props = Object.keys(obj);
for (var i = 0; i < props.length; i++) {
temp[props[i]] = obj[props[i]];
}
return temp;
}
}
}
function setupBrowserWorker(script, workerOpts, Worker) {
// create the web worker
var worker = new Worker(script, workerOpts);
worker.isBrowserWorker = true;
// add node.js API to the web worker
worker.on = function (event, callback) {
this.addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message, transfer) {
this.postMessage(message, transfer);
};
return worker;
}
function setupWorkerThreadWorker(script, WorkerThreads, workerThreadOptions) {
var worker = new WorkerThreads.Worker(script, _objectSpread({
stdout: false,
// automatically pipe worker.STDOUT to process.STDOUT
stderr: false
}, workerThreadOptions));
worker.isWorkerThread = true;
worker.send = function (message, transfer) {
this.postMessage(message, transfer);
};
worker.kill = function () {
this.terminate();
return true;
};
worker.disconnect = function () {
this.terminate();
};
return worker;
}
function setupProcessWorker(script, options, child_process) {
// no WorkerThreads, fallback to sub-process based workers
var worker = child_process.fork(script, options.forkArgs, options.forkOpts);
// ignore transfer argument since it is not supported by process
var send = worker.send;
worker.send = function (message) {
return send.call(worker, message);
};
worker.isChildProcess = true;
return worker;
}
/**
* A WorkerHandler controls a single worker. This worker can be a child process
* on node.js or a WebWorker in a browser environment.
* @param {String} [script] If no script is provided, a default worker with a
* function run will be created.
* @param {WorkerPoolOptions} _options See docs
* @constructor
*/
function WorkerHandler$1(script, _options) {
var me = this;
var options = _options || {};
this.script = script || getDefaultWorker();
this.worker = setupWorker(this.script, options);
this.debugPort = options.debugPort;
this.forkOpts = options.forkOpts;
this.forkArgs = options.forkArgs;
this.workerOpts = options.workerOpts;
this.workerThreadOpts = options.workerThreadOpts;
this.workerTerminateTimeout = options.workerTerminateTimeout;
// add debug flags to child processes if the node inspector is active
function resolveForkOptions(opts) {
opts = opts || {};
var processExecArgv = process.execArgv.join(' ');
var inspectorActive = processExecArgv.indexOf('--inspect') !== -1;
var debugBrk = processExecArgv.indexOf('--debug-brk') !== -1;
var execArgv = [];
if (inspectorActive) {
execArgv.push('--inspect=' + opts.debugPort);
if (debugBrk) {
execArgv.push('--debug-brk');
}
}
process.execArgv.forEach(function (arg) {
if (arg.indexOf('--max-old-space-size') > -1) {
execArgv.push(arg);
}
});
return Object.assign({}, opts, {
forkArgs: opts.forkArgs,
forkOpts: Object.assign({}, opts.forkOpts, {
execArgv: (opts.forkOpts && opts.forkOpts.execArgv || []).concat(execArgv)
})
});
}
// The ready message is only sent if the worker.add method is called (And the default script is not used)
if (!script) {
this.worker.ready = true;
}
/**
* Converts a serialized error to Error
* @param {Object} obj Error that has been serialized and parsed to object
* @return {Error} The equivalent Error.
*/
function objectToError(obj) {
var temp = new Error('');
var props = Object.keys(obj);
for (var i = 0; i < props.length; i++) {
temp[props[i]] = obj[props[i]];
}
return temp;
}
// queue for requests that are received before the worker is ready
this.requestQueue = [];
this.worker.on('message', function (response) {
if (me.terminated) {
return;
}
if (typeof response === 'string' && response === 'ready') {
me.worker.ready = true;
dispatchQueuedRequests();
} else {
// find the task from the processing queue, and run the tasks callback
var id = response.id;
var task = me.processing[id];
if (task !== undefined) {
if (response.isEvent) {
if (task.options && typeof task.options.on === 'function') {
task.options.on(response.payload);
}
} else {
// remove the task from the queue
delete me.processing[id];
/**
* A WorkerHandler controls a single worker. This worker can be a child process
* on node.js or a WebWorker in a browser environment.
* @param {String} [script] If no script is provided, a default worker with a
* function run will be created.
* @param {WorkerPoolOptions} _options See docs
* @constructor
*/
function WorkerHandler(script, _options) {
var me = this;
var options = _options || {};
this.script = script || getDefaultWorker();
this.worker = setupWorker(this.script, options);
this.debugPort = options.debugPort;
this.forkOpts = options.forkOpts;
this.forkArgs = options.forkArgs;
this.workerOpts = options.workerOpts;
this.workerThreadOpts = options.workerThreadOpts;
this.workerTerminateTimeout = options.workerTerminateTimeout;
// test if we need to terminate
if (me.terminating === true) {
// complete worker termination if all tasks are finished
me.terminate();
}
// The ready message is only sent if the worker.add method is called (And the default script is not used)
if (!script) {
this.worker.ready = true;
}
// queue for requests that are received before the worker is ready
this.requestQueue = [];
this.worker.on('message', function (response) {
if (me.terminated) {
return;
}
if (typeof response === 'string' && response === 'ready') {
me.worker.ready = true;
dispatchQueuedRequests();
} else {
// find the task from the processing queue, and run the tasks callback
var id = response.id;
var task = me.processing[id];
if (task !== undefined) {
if (response.isEvent) {
if (task.options && typeof task.options.on === 'function') {
task.options.on(response.payload);
// resolve the task's promise
if (response.error) {
task.resolver.reject(objectToError(response.error));
} else {
task.resolver.resolve(response.result);
}
}
}
} else {
// remove the task from the queue
delete me.processing[id];
}
});
// test if we need to terminate
if (me.terminating === true) {
// complete worker termination if all tasks are finished
me.terminate();
// reject all running tasks on worker error
function onError(error) {
me.terminated = true;
for (var id in me.processing) {
if (me.processing[id] !== undefined) {
me.processing[id].resolver.reject(error);
}
}
me.processing = Object.create(null);
}
// resolve the task's promise
if (response.error) {
task.resolver.reject(objectToError(response.error));
} else {
task.resolver.resolve(response.result);
}
// send all queued requests to worker
function dispatchQueuedRequests() {
for (const request of me.requestQueue.splice(0)) {
me.worker.send(request.message, request.transfer);
}
}
}
});
var worker = this.worker;
// listen for worker messages error and exit
this.worker.on('error', onError);
this.worker.on('exit', function (exitCode, signalCode) {
var message = 'Workerpool Worker terminated Unexpectedly\n';
message += ' exitCode: `' + exitCode + '`\n';
message += ' signalCode: `' + signalCode + '`\n';
message += ' workerpool.script: `' + me.script + '`\n';
message += ' spawnArgs: `' + worker.spawnargs + '`\n';
message += ' spawnfile: `' + worker.spawnfile + '`\n';
message += ' stdout: `' + worker.stdout + '`\n';
message += ' stderr: `' + worker.stderr + '`\n';
onError(new Error(message));
});
this.processing = Object.create(null); // queue with tasks currently in progress
// reject all running tasks on worker error
function onError(error) {
me.terminated = true;
for (var id in me.processing) {
if (me.processing[id] !== undefined) {
me.processing[id].resolver.reject(error);
}
this.terminating = false;
this.terminated = false;
this.cleaning = false;
this.terminationHandler = null;
this.lastId = 0;
}
me.processing = Object.create(null);
}
// send all queued requests to worker
function dispatchQueuedRequests() {
var _iterator = _createForOfIteratorHelper(me.requestQueue.splice(0)),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var request = _step.value;
me.worker.send(request.message, request.transfer);
/**
* Get a list with methods available on the worker.
* @return {Promise.<String[], Error>} methods
*/
WorkerHandler$1.prototype.methods = function () {
return this.exec('methods');
};
/**
* Execute a method with given parameters on the worker
* @param {String} method
* @param {Array} [params]
* @param {{resolve: Function, reject: Function}} [resolver]
* @param {ExecOptions} [options]
* @return {Promise.<*, Error>} result
*/
WorkerHandler$1.prototype.exec = function (method, params, resolver, options) {
if (!resolver) {
resolver = Promise.defer();
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
}
var worker = this.worker;
// listen for worker messages error and exit
this.worker.on('error', onError);
this.worker.on('exit', function (exitCode, signalCode) {
var message = 'Workerpool Worker terminated Unexpectedly\n';
message += ' exitCode: `' + exitCode + '`\n';
message += ' signalCode: `' + signalCode + '`\n';
message += ' workerpool.script: `' + me.script + '`\n';
message += ' spawnArgs: `' + worker.spawnargs + '`\n';
message += ' spawnfile: `' + worker.spawnfile + '`\n';
message += ' stdout: `' + worker.stdout + '`\n';
message += ' stderr: `' + worker.stderr + '`\n';
onError(new Error(message));
});
this.processing = Object.create(null); // queue with tasks currently in progress
this.terminating = false;
this.terminated = false;
this.cleaning = false;
this.terminationHandler = null;
this.lastId = 0;
}
// generate a unique id for the task
var id = ++this.lastId;
/**
* Get a list with methods available on the worker.
* @return {Promise.<String[], Error>} methods
*/
WorkerHandler.prototype.methods = function () {
return this.exec('methods');
};
// register a new task as being in progress
this.processing[id] = {
id: id,
resolver: resolver,
options: options
};
/**
* Execute a method with given parameters on the worker
* @param {String} method
* @param {Array} [params]
* @param {{resolve: Function, reject: Function}} [resolver]
* @param {ExecOptions} [options]
* @return {Promise.<*, Error>} result
*/
WorkerHandler.prototype.exec = function (method, params, resolver, options) {
if (!resolver) {
resolver = Promise.defer();
}
// build a JSON-RPC request
var request = {
message: {
id: id,
method: method,
params: params
},
transfer: options && options.transfer
};
if (this.terminated) {
resolver.reject(new Error('Worker is terminated'));
} else if (this.worker.ready) {
// send the request to the worker
this.worker.send(request.message, request.transfer);
} else {
this.requestQueue.push(request);
}
// generate a unique id for the task
var id = ++this.lastId;
// on cancellation, force the worker to terminate
var me = this;
return resolver.promise.catch(function (error) {
if (error instanceof Promise.CancellationError || error instanceof Promise.TimeoutError) {
// remove this task from the queue. It is already rejected (hence this
// catch event), and else it will be rejected again when terminating
delete me.processing[id];
// register a new task as being in progress
this.processing[id] = {
id: id,
resolver: resolver,
options: options
};
// terminate worker
return me.terminateAndNotify(true).then(function () {
throw error;
}, function (err) {
throw err;
});
} else {
throw error;
}
});
};
// build a JSON-RPC request
var request = {
message: {
id: id,
method: method,
params: params
},
transfer: options && options.transfer
};
if (this.terminated) {
resolver.reject(new Error('Worker is terminated'));
} else if (this.worker.ready) {
// send the request to the worker
this.worker.send(request.message, request.transfer);
} else {
this.requestQueue.push(request);
}
/**
* Test whether the worker is processing any tasks or cleaning up before termination.
* @return {boolean} Returns true if the worker is busy
*/
WorkerHandler$1.prototype.busy = function () {
return this.cleaning || Object.keys(this.processing).length > 0;
};
// on cancellation, force the worker to terminate
var me = this;
return resolver.promise["catch"](function (error) {
if (error instanceof Promise.CancellationError || error instanceof Promise.TimeoutError) {
// remove this task from the queue. It is already rejected (hence this
// catch event), and else it will be rejected again when terminating
delete me.processing[id];
/**
* Terminate the worker.
* @param {boolean} [force=false] If false (default), the worker is terminated
* after finishing all tasks currently in
* progress. If true, the worker will be
* terminated immediately.
* @param {function} [callback=null] If provided, will be called when process terminates.
*/
WorkerHandler$1.prototype.terminate = function (force, callback) {
var me = this;
if (force) {
// cancel all tasks in progress
for (var id in this.processing) {
if (this.processing[id] !== undefined) {
this.processing[id].resolver.reject(new Error('Worker terminated'));
}
}
this.processing = Object.create(null);
}
if (typeof callback === 'function') {
this.terminationHandler = callback;
}
if (!this.busy()) {
// all tasks are finished. kill the worker
var cleanup = function (err) {
me.terminated = true;
me.cleaning = false;
if (me.worker != null && me.worker.removeAllListeners) {
// removeAllListeners is only available for child_process
me.worker.removeAllListeners('message');
}
me.worker = null;
me.terminating = false;
if (me.terminationHandler) {
me.terminationHandler(err, me);
} else if (err) {
throw err;
}
};
if (this.worker) {
if (typeof this.worker.kill === 'function') {
if (this.worker.killed) {
cleanup(new Error('worker already killed!'));
return;
}
// terminate worker
return me.terminateAndNotify(true).then(function () {
throw error;
}, function (err) {
throw err;
});
} else {
throw error;
}
});
};
// child process and worker threads
var cleanExitTimeout = setTimeout(function () {
if (me.worker) {
me.worker.kill();
}
}, this.workerTerminateTimeout);
this.worker.once('exit', function () {
clearTimeout(cleanExitTimeout);
if (me.worker) {
me.worker.killed = true;
}
cleanup();
});
if (this.worker.ready) {
this.worker.send(TERMINATE_METHOD_ID);
} else {
this.requestQueue.push({
message: TERMINATE_METHOD_ID
});
}
/**
* Test whether the worker is processing any tasks or cleaning up before termination.
* @return {boolean} Returns true if the worker is busy
*/
WorkerHandler.prototype.busy = function () {
return this.cleaning || Object.keys(this.processing).length > 0;
};
// mark that the worker is cleaning up resources
// to prevent new tasks from being executed
this.cleaning = true;
return;
} else if (typeof this.worker.terminate === 'function') {
this.worker.terminate(); // web worker
this.worker.killed = true;
} else {
throw new Error('Failed to terminate worker');
}
}
cleanup();
} else {
// we can't terminate immediately, there are still tasks being executed
this.terminating = true;
}
};
/**
* Terminate the worker.
* @param {boolean} [force=false] If false (default), the worker is terminated
* after finishing all tasks currently in
* progress. If true, the worker will be
* terminated immediately.
* @param {function} [callback=null] If provided, will be called when process terminates.
*/
WorkerHandler.prototype.terminate = function (force, callback) {
var me = this;
if (force) {
// cancel all tasks in progress
for (var id in this.processing) {
if (this.processing[id] !== undefined) {
this.processing[id].resolver.reject(new Error('Worker terminated'));
/**
* Terminate the worker, returning a Promise that resolves when the termination has been done.
* @param {boolean} [force=false] If false (default), the worker is terminated
* after finishing all tasks currently in
* progress. If true, the worker will be
* terminated immediately.
* @param {number} [timeout] If provided and non-zero, worker termination promise will be rejected
* after timeout if worker process has not been terminated.
* @return {Promise.<WorkerHandler, Error>}
*/
WorkerHandler$1.prototype.terminateAndNotify = function (force, timeout) {
var resolver = Promise.defer();
if (timeout) {
resolver.promise.timeout(timeout);
}
this.terminate(force, function (err, worker) {
if (err) {
resolver.reject(err);
} else {
resolver.resolve(worker);
}
});
return resolver.promise;
};
WorkerHandler.exports = WorkerHandler$1;
WorkerHandler.exports._tryRequireWorkerThreads = tryRequireWorkerThreads;
WorkerHandler.exports._setupProcessWorker = setupProcessWorker;
WorkerHandler.exports._setupBrowserWorker = setupBrowserWorker;
WorkerHandler.exports._setupWorkerThreadWorker = setupWorkerThreadWorker;
WorkerHandler.exports.ensureWorkerThreads = ensureWorkerThreads;
return WorkerHandler.exports;
}
var debugPortAllocator;
var hasRequiredDebugPortAllocator;
function requireDebugPortAllocator() {
if (hasRequiredDebugPortAllocator) return debugPortAllocator;
hasRequiredDebugPortAllocator = 1;
var MAX_PORTS = 65535;
debugPortAllocator = DebugPortAllocator;
function DebugPortAllocator() {
this.ports = Object.create(null);
this.length = 0;
}
this.processing = Object.create(null);
}
if (typeof callback === 'function') {
this.terminationHandler = callback;
}
if (!this.busy()) {
// all tasks are finished. kill the worker
var cleanup = function cleanup(err) {
me.terminated = true;
me.cleaning = false;
if (me.worker != null && me.worker.removeAllListeners) {
// removeAllListeners is only available for child_process
me.worker.removeAllListeners('message');
DebugPortAllocator.prototype.nextAvailableStartingAt = function (starting) {
while (this.ports[starting] === true) {
starting++;
}
me.worker = null;
me.terminating = false;
if (me.terminationHandler) {
me.terminationHandler(err, me);
} else if (err) {
throw err;
if (starting >= MAX_PORTS) {
throw new Error('WorkerPool debug port limit reached: ' + starting + '>= ' + MAX_PORTS);
}
this.ports[starting] = true;
this.length++;
return starting;
};
if (this.worker) {
if (typeof this.worker.kill === 'function') {
if (this.worker.killed) {
cleanup(new Error('worker already killed!'));
return;
}
DebugPortAllocator.prototype.releasePort = function (port) {
delete this.ports[port];
this.length--;
};
return debugPortAllocator;
}
// child process and worker threads
var cleanExitTimeout = setTimeout(function () {
if (me.worker) {
me.worker.kill();
}
}, this.workerTerminateTimeout);
this.worker.once('exit', function () {
clearTimeout(cleanExitTimeout);
if (me.worker) {
me.worker.killed = true;
}
cleanup();
});
if (this.worker.ready) {
this.worker.send(TERMINATE_METHOD_ID);
var Pool_1;
var hasRequiredPool;
function requirePool() {
if (hasRequiredPool) return Pool_1;
hasRequiredPool = 1;
var Promise = require_Promise();
var WorkerHandler = requireWorkerHandler();
var environment = environmentExports;
var DebugPortAllocator = requireDebugPortAllocator();
var DEBUG_PORT_ALLOCATOR = new DebugPortAllocator();
/**
* A pool to manage workers
* @param {String} [script] Optional worker script
* @param {WorkerPoolOptions} [options] See docs
* @constructor
*/
function Pool(script, options) {
if (typeof script === 'string') {
this.script = script || null;
} else {
this.script = null;
options = script;
}
this.workers = []; // queue with all workers
this.tasks = []; // queue with tasks awaiting execution
options = options || {};
this.forkArgs = Object.freeze(options.forkArgs || []);
this.forkOpts = Object.freeze(options.forkOpts || {});
this.workerOpts = Object.freeze(options.workerOpts || {});
this.workerThreadOpts = Object.freeze(options.workerThreadOpts || {});
this.debugPortStart = options.debugPortStart || 43210;
this.nodeWorker = options.nodeWorker;
this.workerType = options.workerType || options.nodeWorker || 'auto';
this.maxQueueSize = options.maxQueueSize || Infinity;
this.workerTerminateTimeout = options.workerTerminateTimeout || 1000;
this.onCreateWorker = options.onCreateWorker || (() => null);
this.onTerminateWorker = options.onTerminateWorker || (() => null);
// configuration
if (options && 'maxWorkers' in options) {
validateMaxWorkers(options.maxWorkers);
this.maxWorkers = options.maxWorkers;
} else {
this.maxWorkers = Math.max((environment.cpus || 4) - 1, 1);
}
if (options && 'minWorkers' in options) {
if (options.minWorkers === 'max') {
this.minWorkers = this.maxWorkers;
} else {
this.requestQueue.push({
message: TERMINATE_METHOD_ID
});
validateMinWorkers(options.minWorkers);
this.minWorkers = options.minWorkers;
this.maxWorkers = Math.max(this.minWorkers, this.maxWorkers); // in case minWorkers is higher than maxWorkers
}
// mark that the worker is cleaning up resources
// to prevent new tasks from being executed
this.cleaning = true;
return;
} else if (typeof this.worker.terminate === 'function') {
this.worker.terminate(); // web worker
this.worker.killed = true;
} else {
throw new Error('Failed to terminate worker');
this._ensureMinWorkers();
}
this._boundNext = this._next.bind(this);
if (this.workerType === 'thread') {
WorkerHandler.ensureWorkerThreads();
}
}
cleanup();
} else {
// we can't terminate immediately, there are still tasks being executed
this.terminating = true;
}
};
/**
* Terminate the worker, returning a Promise that resolves when the termination has been done.
* @param {boolean} [force=false] If false (default), the worker is terminated
* after finishing all tasks currently in
* progress. If true, the worker will be
* terminated immediately.
* @param {number} [timeout] If provided and non-zero, worker termination promise will be rejected
* after timeout if worker process has not been terminated.
* @return {Promise.<WorkerHandler, Error>}
*/
WorkerHandler.prototype.terminateAndNotify = function (force, timeout) {
var resolver = Promise.defer();
if (timeout) {
resolver.promise.timeout(timeout);
}
this.terminate(force, function (err, worker) {
if (err) {
resolver.reject(err);
} else {
resolver.resolve(worker);
}
});
return resolver.promise;
};
module.exports = WorkerHandler;
module.exports._tryRequireWorkerThreads = tryRequireWorkerThreads;
module.exports._setupProcessWorker = setupProcessWorker;
module.exports._setupBrowserWorker = setupBrowserWorker;
module.exports._setupWorkerThreadWorker = setupWorkerThreadWorker;
module.exports.ensureWorkerThreads = ensureWorkerThreads;
/**
* Execute a function on a worker.
*
* Example usage:
*
* var pool = new Pool()
*
* // call a function available on the worker
* pool.exec('fibonacci', [6])
*
* // offload a function
* function add(a, b) {
* return a + b
* };
* pool.exec(add, [2, 4])
* .then(function (result) {
* console.log(result); // outputs 6
* })
* .catch(function(error) {
* console.log(error);
* });
*
* @param {String | Function} method Function name or function.
* If `method` is a string, the corresponding
* method on the worker will be executed
* If `method` is a Function, the function
* will be stringified and executed via the
* workers built-in function `run(fn, args)`.
* @param {Array} [params] Function arguments applied when calling the function
* @param {ExecOptions} [options] Options object
* @return {Promise.<*, Error>} result
*/
Pool.prototype.exec = function (method, params, options) {
// validate type of arguments
if (params && !Array.isArray(params)) {
throw new TypeError('Array expected as argument "params"');
}
if (typeof method === 'string') {
var resolver = Promise.defer();
if (this.tasks.length >= this.maxQueueSize) {
throw new Error('Max queue size of ' + this.maxQueueSize + ' reached');
}
/***/ }),
// add a new task to the queue
var tasks = this.tasks;
var task = {
method: method,
params: params,
resolver: resolver,
timeout: null,
options: options
};
tasks.push(task);
/***/ 833:
/***/ (function(module) {
// replace the timeout method of the Promise with our own,
// which starts the timer as soon as the task is actually started
var originalTimeout = resolver.promise.timeout;
resolver.promise.timeout = function timeout(delay) {
if (tasks.indexOf(task) !== -1) {
// task is still queued -> start the timer later on
task.timeout = delay;
return resolver.promise;
} else {
// task is already being executed -> start timer immediately
return originalTimeout.call(resolver.promise, delay);
}
};
"use strict";
// trigger task execution
this._next();
return resolver.promise;
} else if (typeof method === 'function') {
// send stringified function and function arguments to worker
return this.exec('run', [String(method), params]);
} else {
throw new TypeError('Function or string expected as argument "method"');
}
};
/**
* Create a proxy for current worker. Returns an object containing all
* methods available on the worker. The methods always return a promise.
*
* @return {Promise.<Object, Error>} proxy
*/
Pool.prototype.proxy = function () {
if (arguments.length > 0) {
throw new Error('No arguments expected');
}
var pool = this;
return this.exec('methods').then(function (methods) {
var proxy = {};
methods.forEach(function (method) {
proxy[method] = function () {
return pool.exec(method, Array.prototype.slice.call(arguments));
};
});
return proxy;
});
};
var MAX_PORTS = 65535;
module.exports = DebugPortAllocator;
function DebugPortAllocator() {
this.ports = Object.create(null);
this.length = 0;
}
DebugPortAllocator.prototype.nextAvailableStartingAt = function (starting) {
while (this.ports[starting] === true) {
starting++;
}
if (starting >= MAX_PORTS) {
throw new Error('WorkerPool debug port limit reached: ' + starting + '>= ' + MAX_PORTS);
}
this.ports[starting] = true;
this.length++;
return starting;
};
DebugPortAllocator.prototype.releasePort = function (port) {
delete this.ports[port];
this.length--;
};
/**
* Creates new array with the results of calling a provided callback function
* on every element in this array.
* @param {Array} array
* @param {function} callback Function taking two arguments:
* `callback(currentValue, index)`
* @return {Promise.<Array>} Returns a promise which resolves with an Array
* containing the results of the callback function
* executed for each of the array elements.
*/
/* TODO: implement map
Pool.prototype.map = function (array, callback) {
};
*/
/***/ }),
/**
* Grab the first task from the queue, find a free worker, and assign the
* worker to the task.
* @protected
*/
Pool.prototype._next = function () {
if (this.tasks.length > 0) {
// there are tasks in the queue
/***/ 828:
/***/ (function(module, __unused_webpack_exports, __webpack_require__) {
// find an available worker
var worker = this._getWorker();
if (worker) {
// get the first task from the queue
var me = this;
var task = this.tasks.shift();
var requireFoolWebpack = __webpack_require__(397);
// check if the task is still pending (and not cancelled -> promise rejected)
if (task.resolver.promise.pending) {
// send the request to the worker
var promise = worker.exec(task.method, task.params, task.resolver, task.options).then(me._boundNext).catch(function () {
// if the worker crashed and terminated, remove it from the pool
if (worker.terminated) {
return me._removeWorker(worker);
}
}).then(function () {
me._next(); // trigger next task in the queue
});
// source: https://github.com/flexdinesh/browser-or-node
var isNode = function isNode(nodeProcess) {
return typeof nodeProcess !== 'undefined' && nodeProcess.versions != null && nodeProcess.versions.node != null;
};
module.exports.isNode = isNode;
// start queued timer now
if (typeof task.timeout === 'number') {
promise.timeout(task.timeout);
}
} else {
// The task taken was already complete (either rejected or resolved), so just trigger next task in the queue
me._next();
}
}
}
};
// determines the JavaScript platform: browser or node
module.exports.platform = typeof process !== 'undefined' && isNode(process) ? 'node' : 'browser';
/**
* Get an available worker. If no worker is available and the maximum number
* of workers isn't yet reached, a new worker will be created and returned.
* If no worker is available and the maximum number of workers is reached,
* null will be returned.
*
* @return {WorkerHandler | null} worker
* @private
*/
Pool.prototype._getWorker = function () {
// find a non-busy worker
var workers = this.workers;
for (var i = 0; i < workers.length; i++) {
var worker = workers[i];
if (worker.busy() === false) {
return worker;
}
}
if (workers.length < this.maxWorkers) {
// create a new worker
worker = this._createWorkerHandler();
workers.push(worker);
return worker;
}
return null;
};
// determines whether the code is running in main thread or not
// note that in node.js we have to check both worker_thread and child_process
var worker_threads = tryRequireFoolWebpack('worker_threads');
module.exports.isMainThread = module.exports.platform === 'node' ? (!worker_threads || worker_threads.isMainThread) && !process.connected : typeof Window !== 'undefined';
/**
* Remove a worker from the pool.
* Attempts to terminate worker if not already terminated, and ensures the minimum
* pool size is met.
* @param {WorkerHandler} worker
* @return {Promise<WorkerHandler>}
* @protected
*/
Pool.prototype._removeWorker = function (worker) {
var me = this;
DEBUG_PORT_ALLOCATOR.releasePort(worker.debugPort);
// _removeWorker will call this, but we need it to be removed synchronously
this._removeWorkerFromList(worker);
// If minWorkers set, spin up new workers to replace the crashed ones
this._ensureMinWorkers();
// terminate the worker (if not already terminated)
return new Promise(function (resolve, reject) {
worker.terminate(false, function (err) {
me.onTerminateWorker({
forkArgs: worker.forkArgs,
forkOpts: worker.forkOpts,
workerThreadOpts: worker.workerThreadOpts,
script: worker.script
});
if (err) {
reject(err);
} else {
resolve(worker);
}
});
});
};
// determines the number of cpus available
module.exports.cpus = module.exports.platform === 'browser' ? self.navigator.hardwareConcurrency : requireFoolWebpack('os').cpus().length;
function tryRequireFoolWebpack(module) {
try {
return requireFoolWebpack(module);
} catch (err) {
return null;
}
}
/**
* Remove a worker from the pool list.
* @param {WorkerHandler} worker
* @protected
*/
Pool.prototype._removeWorkerFromList = function (worker) {
// remove from the list with workers
var index = this.workers.indexOf(worker);
if (index !== -1) {
this.workers.splice(index, 1);
}
};
/***/ }),
/**
* Close all active workers. Tasks currently being executed will be finished first.
* @param {boolean} [force=false] If false (default), the workers are terminated
* after finishing all tasks currently in
* progress. If true, the workers will be
* terminated immediately.
* @param {number} [timeout] If provided and non-zero, worker termination promise will be rejected
* after timeout if worker process has not been terminated.
* @return {Promise.<void, Error>}
*/
Pool.prototype.terminate = function (force, timeout) {
var me = this;
/***/ 670:
/***/ (function(module) {
// cancel any pending tasks
this.tasks.forEach(function (task) {
task.resolver.reject(new Error('Pool terminated'));
});
this.tasks.length = 0;
var f = function (worker) {
DEBUG_PORT_ALLOCATOR.releasePort(worker.debugPort);
this._removeWorkerFromList(worker);
};
var removeWorker = f.bind(this);
var promises = [];
var workers = this.workers.slice();
workers.forEach(function (worker) {
var termPromise = worker.terminateAndNotify(force, timeout).then(removeWorker).always(function () {
me.onTerminateWorker({
forkArgs: worker.forkArgs,
forkOpts: worker.forkOpts,
workerThreadOpts: worker.workerThreadOpts,
script: worker.script
});
});
promises.push(termPromise);
});
return Promise.all(promises);
};
/**
* embeddedWorker.js contains an embedded version of worker.js.
* This file is automatically generated,
* changes made in this file will be overwritten.
*/
module.exports = "!function(){var __webpack_modules__={577:function(e){e.exports=function(e,r){this.message=e,this.transfer=r}}},__webpack_module_cache__={};function __webpack_require__(e){var r=__webpack_module_cache__[e];return void 0!==r||(r=__webpack_module_cache__[e]={exports:{}},__webpack_modules__[e](r,r.exports,__webpack_require__)),r.exports}var __webpack_exports__={};!function(){var exports=__webpack_exports__,__webpack_unused_export__;function _typeof(e){return(_typeof=\"function\"==typeof Symbol&&\"symbol\"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&\"function\"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?\"symbol\":typeof e})(e)}var Transfer=__webpack_require__(577),requireFoolWebpack=eval(\"typeof require !== 'undefined' ? require : function (module) { throw new Error('Module \\\" + module + \\\" not found.') }\"),TERMINATE_METHOD_ID=\"__workerpool-terminate__\",worker={exit:function(){}},WorkerThreads,parentPort;if(\"undefined\"!=typeof self&&\"function\"==typeof postMessage&&\"function\"==typeof addEventListener)worker.on=function(e,r){addEventListener(e,function(e){r(e.data)})},worker.send=function(e){postMessage(e)};else{if(\"undefined\"==typeof process)throw new Error(\"Script must be executed as a worker\");try{WorkerThreads=requireFoolWebpack(\"worker_threads\")}catch(error){if(\"object\"!==_typeof(error)||null===error||\"MODULE_NOT_FOUND\"!==error.code)throw error}WorkerThreads&&null!==WorkerThreads.parentPort?(parentPort=WorkerThreads.parentPort,worker.send=parentPort.postMessage.bind(parentPort),worker.on=parentPort.on.bind(parentPort)):(worker.on=process.on.bind(process),worker.send=function(e){process.send(e)},worker.on(\"disconnect\",function(){process.exit(1)})),worker.exit=process.exit.bind(process)}function convertError(o){return Object.getOwnPropertyNames(o).reduce(function(e,r){return Object.defineProperty(e,r,{value:o[r],enumerable:!0})},{})}function isPromise(e){return e&&\"function\"==typeof e.then&&\"function\"==typeof e.catch}worker.methods={},worker.methods.run=function(e,r){e=new Function(\"return (\"+e+\").apply(null, arguments);\");return e.apply(e,r)},worker.methods.methods=function(){return Object.keys(worker.methods)},worker.terminationHandler=void 0,worker.cleanupAndExit=function(e){function r(){worker.exit(e)}if(!worker.terminationHandler)return r();var o=worker.terminationHandler(e);isPromise(o)?o.then(r,r):r()};var currentRequestId=null;worker.on(\"message\",function(r){if(r===TERMINATE_METHOD_ID)return worker.cleanupAndExit(0);try{var e=worker.methods[r.method];if(!e)throw new Error('Unknown method \"'+r.method+'\"');currentRequestId=r.id;var o=e.apply(e,r.params);isPromise(o)?o.then(function(e){e instanceof Transfer?worker.send({id:r.id,result:e.message,error:null},e.transfer):worker.send({id:r.id,result:e,error:null}),currentRequestId=null}).catch(function(e){worker.send({id:r.id,result:null,error:convertError(e)}),currentRequestId=null}):(o instanceof Transfer?worker.send({id:r.id,result:o.message,error:null},o.transfer):worker.send({id:r.id,result:o,error:null}),currentRequestId=null)}catch(e){worker.send({id:r.id,result:null,error:convertError(e)})}}),worker.register=function(e,r){if(e)for(var o in e)e.hasOwnProperty(o)&&(worker.methods[o]=e[o]);r&&(worker.terminationHandler=r.onTerminate),worker.send(\"ready\")},worker.emit=function(e){currentRequestId&&(e instanceof Transfer?worker.send({id:currentRequestId,isEvent:!0,payload:e.message},e.transfer):worker.send({id:currentRequestId,isEvent:!0,payload:e}))},__webpack_unused_export__=worker.register,worker.emit}()}();";
/**
* Retrieve statistics on tasks and workers.
* @return {{totalWorkers: number, busyWorkers: number, idleWorkers: number, pendingTasks: number, activeTasks: number}} Returns an object with statistics
*/
Pool.prototype.stats = function () {
var totalWorkers = this.workers.length;
var busyWorkers = this.workers.filter(function (worker) {
return worker.busy();
}).length;
return {
totalWorkers: totalWorkers,
busyWorkers: busyWorkers,
idleWorkers: totalWorkers - busyWorkers,
pendingTasks: this.tasks.length,
activeTasks: busyWorkers
};
};
/***/ }),
/**
* Ensures that a minimum of minWorkers is up and running
* @protected
*/
Pool.prototype._ensureMinWorkers = function () {
if (this.minWorkers) {
for (var i = this.workers.length; i < this.minWorkers; i++) {
this.workers.push(this._createWorkerHandler());
}
}
};
/***/ 397:
/***/ (function(module) {
/**
* Helper function to create a new WorkerHandler and pass all options.
* @return {WorkerHandler}
* @private
*/
Pool.prototype._createWorkerHandler = function () {
const overriddenParams = this.onCreateWorker({
forkArgs: this.forkArgs,
forkOpts: this.forkOpts,
workerOpts: this.workerOpts,
workerThreadOpts: this.workerThreadOpts,
script: this.script
}) || {};
return new WorkerHandler(overriddenParams.script || this.script, {
forkArgs: overriddenParams.forkArgs || this.forkArgs,
forkOpts: overriddenParams.forkOpts || this.forkOpts,
workerOpts: overriddenParams.workerOpts || this.workerOpts,
workerThreadOpts: overriddenParams.workerThreadOpts || this.workerThreadOpts,
debugPort: DEBUG_PORT_ALLOCATOR.nextAvailableStartingAt(this.debugPortStart),
workerType: this.workerType,
workerTerminateTimeout: this.workerTerminateTimeout
});
};
// source of inspiration: https://github.com/sindresorhus/require-fool-webpack
var requireFoolWebpack = eval('typeof require !== \'undefined\' ' + '? require ' + ': function (module) { throw new Error(\'Module " + module + " not found.\') }');
module.exports = requireFoolWebpack;
/**
* Ensure that the maxWorkers option is an integer >= 1
* @param {*} maxWorkers
* @returns {boolean} returns true maxWorkers has a valid value
*/
function validateMaxWorkers(maxWorkers) {
if (!isNumber(maxWorkers) || !isInteger(maxWorkers) || maxWorkers < 1) {
throw new TypeError('Option maxWorkers must be an integer number >= 1');
}
}
/***/ }),
/**
* Ensure that the minWorkers option is an integer >= 0
* @param {*} minWorkers
* @returns {boolean} returns true when minWorkers has a valid value
*/
function validateMinWorkers(minWorkers) {
if (!isNumber(minWorkers) || !isInteger(minWorkers) || minWorkers < 0) {
throw new TypeError('Option minWorkers must be an integer number >= 0');
}
}
/***/ 577:
/***/ (function(module) {
/**
* Test whether a variable is a number
* @param {*} value
* @returns {boolean} returns true when value is a number
*/
function isNumber(value) {
return typeof value === 'number';
}
/**
* The helper class for transferring data from the worker to the main thread.
*
* @param {Object} message The object to deliver to the main thread.
* @param {Object[]} transfer An array of transferable Objects to transfer ownership of.
*/
function Transfer(message, transfer) {
this.message = message;
this.transfer = transfer;
}
module.exports = Transfer;
/**
* Test whether a number is an integer
* @param {number} value
* @returns {boolean} Returns true if value is an integer
*/
function isInteger(value) {
return Math.round(value) == value;
}
Pool_1 = Pool;
return Pool_1;
}
/***/ }),
var worker$1 = {};
/***/ 744:
/***/ (function(__unused_webpack_module, exports, __webpack_require__) {
/**
* The helper class for transferring data from the worker to the main thread.
*
* @param {Object} message The object to deliver to the main thread.
* @param {Object[]} transfer An array of transferable Objects to transfer ownership of.
*/
var transfer;
var hasRequiredTransfer;
function requireTransfer() {
if (hasRequiredTransfer) return transfer;
hasRequiredTransfer = 1;
function Transfer(message, transfer) {
this.message = message;
this.transfer = transfer;
}
transfer = Transfer;
return transfer;
}
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
/**
* worker must be started as a child process or a web worker.
* It listens for RPC messages from the parent process.
*/
var Transfer = __webpack_require__(577);
/**
* worker must be started as a child process or a web worker.
* It listens for RPC messages from the parent process.
*/
var hasRequiredWorker;
function requireWorker() {
if (hasRequiredWorker) return worker$1;
hasRequiredWorker = 1;
(function (exports) {
var Transfer = requireTransfer();
// source of inspiration: https://github.com/sindresorhus/require-fool-webpack
var requireFoolWebpack = eval('typeof require !== \'undefined\'' + ' ? require' + ' : function (module) { throw new Error(\'Module " + module + " not found.\') }');
/**
* Special message sent by parent which causes the worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
/**
* Special message sent by parent which causes the worker to terminate itself.
* Not a "message object"; this string is the entire message.
*/
var TERMINATE_METHOD_ID = '__workerpool-terminate__';
// var nodeOSPlatform = require('./environment').nodeOSPlatform;
// var nodeOSPlatform = require('./environment').nodeOSPlatform;
// create a worker API for sending and receiving messages which works both on
// node.js and in the browser
var worker = {
exit: function () {}
};
if (typeof self !== 'undefined' && typeof postMessage === 'function' && typeof addEventListener === 'function') {
// worker in the browser
worker.on = function (event, callback) {
addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message) {
postMessage(message);
};
} else if (typeof process !== 'undefined') {
// node.js
// create a worker API for sending and receiving messages which works both on
// node.js and in the browser
var worker = {
exit: function exit() {}
};
if (typeof self !== 'undefined' && typeof postMessage === 'function' && typeof addEventListener === 'function') {
// worker in the browser
worker.on = function (event, callback) {
addEventListener(event, function (message) {
callback(message.data);
});
};
worker.send = function (message) {
postMessage(message);
};
} else if (typeof process !== 'undefined') {
// node.js
var WorkerThreads;
try {
WorkerThreads = require('worker_threads');
} catch (error) {
if (typeof error === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') ; else {
throw error;
}
}
if (WorkerThreads && /* if there is a parentPort, we are in a WorkerThread */
WorkerThreads.parentPort !== null) {
var parentPort = WorkerThreads.parentPort;
worker.send = parentPort.postMessage.bind(parentPort);
worker.on = parentPort.on.bind(parentPort);
worker.exit = process.exit.bind(process);
} else {
worker.on = process.on.bind(process);
// ignore transfer argument since it is not supported by process
worker.send = function (message) {
process.send(message);
};
// register disconnect handler only for subprocess worker to exit when parent is killed unexpectedly
worker.on('disconnect', function () {
process.exit(1);
});
worker.exit = process.exit.bind(process);
}
} else {
throw new Error('Script must be executed as a worker');
}
function convertError(error) {
return Object.getOwnPropertyNames(error).reduce(function (product, name) {
return Object.defineProperty(product, name, {
value: error[name],
enumerable: true
});
}, {});
}
var WorkerThreads;
try {
WorkerThreads = requireFoolWebpack('worker_threads');
} catch (error) {
if (_typeof(error) === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {
// no worker_threads, fallback to sub-process based workers
} else {
throw error;
}
}
if (WorkerThreads && /* if there is a parentPort, we are in a WorkerThread */
WorkerThreads.parentPort !== null) {
var parentPort = WorkerThreads.parentPort;
worker.send = parentPort.postMessage.bind(parentPort);
worker.on = parentPort.on.bind(parentPort);
worker.exit = process.exit.bind(process);
} else {
worker.on = process.on.bind(process);
// ignore transfer argument since it is not supported by process
worker.send = function (message) {
process.send(message);
};
// register disconnect handler only for subprocess worker to exit when parent is killed unexpectedly
worker.on('disconnect', function () {
process.exit(1);
});
worker.exit = process.exit.bind(process);
}
} else {
throw new Error('Script must be executed as a worker');
}
function convertError(error) {
return Object.getOwnPropertyNames(error).reduce(function (product, name) {
return Object.defineProperty(product, name, {
value: error[name],
enumerable: true
});
}, {});
}
/**
* Test whether a value is a Promise via duck typing.
* @param {*} value
* @returns {boolean} Returns true when given value is an object
* having functions `then` and `catch`.
*/
function isPromise(value) {
return value && typeof value.then === 'function' && typeof value.catch === 'function';
}
/**
* Test whether a value is a Promise via duck typing.
* @param {*} value
* @returns {boolean} Returns true when given value is an object
* having functions `then` and `catch`.
*/
function isPromise(value) {
return value && typeof value.then === 'function' && typeof value["catch"] === 'function';
}
// functions available externally
worker.methods = {};
// functions available externally
worker.methods = {};
/**
* Execute a function with provided arguments
* @param {String} fn Stringified function
* @param {Array} [args] Function arguments
* @returns {*}
*/
worker.methods.run = function run(fn, args) {
var f = new Function('return (' + fn + ').apply(null, arguments);');
return f.apply(f, args);
};
/**
* Execute a function with provided arguments
* @param {String} fn Stringified function
* @param {Array} [args] Function arguments
* @returns {*}
*/
worker.methods.run = function run(fn, args) {
var f = new Function('return (' + fn + ').apply(null, arguments);');
return f.apply(f, args);
};
/**
* Get a list with methods available on this worker
* @return {String[]} methods
*/
worker.methods.methods = function methods() {
return Object.keys(worker.methods);
};
/**
* Get a list with methods available on this worker
* @return {String[]} methods
*/
worker.methods.methods = function methods() {
return Object.keys(worker.methods);
};
/**
* Custom handler for when the worker is terminated.
*/
worker.terminationHandler = undefined;
/**
* Custom handler for when the worker is terminated.
*/
worker.terminationHandler = undefined;
/**
* Cleanup and exit the worker.
* @param {Number} code
* @returns
*/
worker.cleanupAndExit = function (code) {
var _exit = function () {
worker.exit(code);
};
if (!worker.terminationHandler) {
return _exit();
}
var result = worker.terminationHandler(code);
if (isPromise(result)) {
result.then(_exit, _exit);
} else {
_exit();
}
};
var currentRequestId = null;
worker.on('message', function (request) {
if (request === TERMINATE_METHOD_ID) {
return worker.cleanupAndExit(0);
}
try {
var method = worker.methods[request.method];
if (method) {
currentRequestId = request.id;
/**
* Cleanup and exit the worker.
* @param {Number} code
* @returns
*/
worker.cleanupAndExit = function (code) {
var _exit = function _exit() {
worker.exit(code);
};
if (!worker.terminationHandler) {
return _exit();
}
var result = worker.terminationHandler(code);
if (isPromise(result)) {
result.then(_exit, _exit);
} else {
_exit();
}
};
var currentRequestId = null;
worker.on('message', function (request) {
if (request === TERMINATE_METHOD_ID) {
return worker.cleanupAndExit(0);
}
try {
var method = worker.methods[request.method];
if (method) {
currentRequestId = request.id;
// execute the function
var result = method.apply(method, request.params);
if (isPromise(result)) {
// promise returned, resolve this and then return
result.then(function (result) {
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
// execute the function
var result = method.apply(method, request.params);
if (isPromise(result)) {
// promise returned, resolve this and then return
result.then(function (result) {
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
}).catch(function (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
currentRequestId = null;
});
} else {
// immediate result
if (result instanceof Transfer) {
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
});
}
currentRequestId = null;
}
} else {
worker.send({
id: request.id,
result: result,
error: null
});
throw new Error('Unknown method "' + request.method + '"');
}
currentRequestId = null;
})["catch"](function (err) {
} catch (err) {
worker.send({

@@ -1492,157 +1479,108 @@ id: request.id,

});
currentRequestId = null;
});
} else {
// immediate result
if (result instanceof Transfer) {
}
});
/**
* Register methods to the worker
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
worker.register = function (methods, options) {
if (methods) {
for (var name in methods) {
if (methods.hasOwnProperty(name)) {
worker.methods[name] = methods[name];
}
}
}
if (options) {
worker.terminationHandler = options.onTerminate;
}
worker.send('ready');
};
worker.emit = function (payload) {
if (currentRequestId) {
if (payload instanceof Transfer) {
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload.message
}, payload.transfer);
return;
}
worker.send({
id: request.id,
result: result.message,
error: null
}, result.transfer);
} else {
worker.send({
id: request.id,
result: result,
error: null
id: currentRequestId,
isEvent: true,
payload
});
}
currentRequestId = null;
};
{
exports.add = worker.register;
exports.emit = worker.emit;
}
} else {
throw new Error('Unknown method "' + request.method + '"');
}
} catch (err) {
worker.send({
id: request.id,
result: null,
error: convertError(err)
});
})(worker$1);
return worker$1;
}
});
/**
* Register methods to the worker
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
worker.register = function (methods, options) {
if (methods) {
for (var name in methods) {
if (methods.hasOwnProperty(name)) {
worker.methods[name] = methods[name];
}
}
}
if (options) {
worker.terminationHandler = options.onTerminate;
}
worker.send('ready');
};
worker.emit = function (payload) {
if (currentRequestId) {
if (payload instanceof Transfer) {
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload.message
}, payload.transfer);
return;
}
worker.send({
id: currentRequestId,
isEvent: true,
payload: payload
});
}
};
if (true) {
exports.add = worker.register;
exports.emit = worker.emit;
}
var environment = environmentExports;
/***/ })
/**
* Create a new worker pool
* @param {string} [script]
* @param {WorkerPoolOptions} [options]
* @returns {Pool} pool
*/
var pool = src.pool = function pool(script, options) {
var Pool = requirePool();
return new Pool(script, options);
};
/******/ });
/************************************************************************/
/******/ // 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__);
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
var __webpack_exports__ = {};
// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk.
!function() {
var exports = __webpack_exports__;
var environment = __webpack_require__(828);
/**
* Create a worker and optionally register a set of methods to the worker.
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
var worker = src.worker = function worker(methods, options) {
var worker = requireWorker();
worker.add(methods, options);
};
/**
* Create a new worker pool
* @param {string} [script]
* @param {WorkerPoolOptions} [options]
* @returns {Pool} pool
*/
exports.pool = function pool(script, options) {
var Pool = __webpack_require__(345);
return new Pool(script, options);
};
/**
* Sends an event to the parent worker pool.
* @param {any} payload
*/
var workerEmit = src.workerEmit = function workerEmit(payload) {
var worker = requireWorker();
worker.emit(payload);
};
/**
* Create a worker and optionally register a set of methods to the worker.
* @param {Object} [methods]
* @param {WorkerRegisterOptions} [options]
*/
exports.worker = function worker(methods, options) {
var worker = __webpack_require__(744);
worker.add(methods, options);
};
/**
* Create a promise.
* @type {Promise} promise
*/
var _Promise = src.Promise = require_Promise();
/**
* Sends an event to the parent worker pool.
* @param {any} payload
*/
exports.workerEmit = function workerEmit(payload) {
var worker = __webpack_require__(744);
worker.emit(payload);
};
/**
* Create a transfer object.
* @type {Transfer} transfer
*/
var Transfer = src.Transfer = requireTransfer();
var platform = src.platform = environment.platform;
var isMainThread = src.isMainThread = environment.isMainThread;
var cpus = src.cpus = environment.cpus;
/**
* Create a promise.
* @type {Promise} promise
*/
exports.Promise = __webpack_require__(219);
exports.Promise = _Promise;
exports.Transfer = Transfer;
exports.cpus = cpus;
exports.default = src;
exports.isMainThread = isMainThread;
exports.platform = platform;
exports.pool = pool;
exports.worker = worker;
exports.workerEmit = workerEmit;
/**
* Create a transfer object.
* @type {Transfer} transfer
*/
exports.Transfer = __webpack_require__(577);
exports.platform = environment.platform;
exports.isMainThread = environment.isMainThread;
exports.cpus = environment.cpus;
}();
/******/ return __webpack_exports__;
/******/ })()
;
});
//# sourceMappingURL=workerpool.js.map
Object.defineProperty(exports, '__esModule', { value: true });
}));
//# sourceMappingURL=workerpool.js.map

4

dist/workerpool.min.js
/*! For license information please see workerpool.min.js.LICENSE.txt */
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null},this.onTerminateWorker=e.onTerminateWorker||function(){return null},e&&"maxWorkers"in e?(function(r){if(!a(r)||!c(r)||r<1)throw new TypeError("Option maxWorkers must be an integer number >= 1")}(e.maxWorkers),this.maxWorkers=e.maxWorkers):this.maxWorkers=Math.max((i.cpus||4)-1,1),e&&"minWorkers"in e&&("max"===e.minWorkers?this.minWorkers=this.maxWorkers:(function(r){if(!a(r)||!c(r)||r<0)throw new TypeError("Option minWorkers must be an integer number >= 0")}(e.minWorkers),this.minWorkers=e.minWorkers,this.maxWorkers=Math.max(this.minWorkers,this.maxWorkers)),this._ensureMinWorkers()),this._boundNext=this._next.bind(this),"thread"===this.workerType&&n.ensureWorkerThreads()}function a(r){return"number"==typeof r}function c(r){return Math.round(r)==r}u.prototype.exec=function(r,e,t){if(e&&!Array.isArray(e))throw new TypeError('Array expected as argument "params"');if("string"==typeof r){var n=o.defer();if(this.tasks.length>=this.maxQueueSize)throw new Error("Max queue size of "+this.maxQueueSize+" reached");var i=this.tasks,s={method:r,params:e,resolver:n,timeout:null,options:t};i.push(s);var u=n.promise.timeout;return n.promise.timeout=function(r){return-1!==i.indexOf(s)?(s.timeout=r,n.promise):u.call(n.promise,r)},this._next(),n.promise}if("function"==typeof r)return this.exec("run",[String(r),e]);throw new TypeError('Function or string expected as argument "method"')},u.prototype.proxy=function(){if(arguments.length>0)throw new Error("No arguments expected");var r=this;return this.exec("methods").then((function(e){var t={};return e.forEach((function(e){t[e]=function(){return r.exec(e,Array.prototype.slice.call(arguments))}})),t}))},u.prototype._next=function(){if(this.tasks.length>0){var r=this._getWorker();if(r){var e=this,t=this.tasks.shift();if(t.resolver.promise.pending){var o=r.exec(t.method,t.params,t.resolver,t.options).then(e._boundNext).catch((function(){if(r.terminated)return e._removeWorker(r)})).then((function(){e._next()}));"number"==typeof t.timeout&&o.timeout(t.timeout)}else e._next()}}},u.prototype._getWorker=function(){for(var r=this.workers,e=0;e<r.length;e++){var t=r[e];if(!1===t.busy())return t}return r.length<this.maxWorkers?(t=this._createWorkerHandler(),r.push(t),t):null},u.prototype._removeWorker=function(r){var e=this;return s.releasePort(r.debugPort),this._removeWorkerFromList(r),this._ensureMinWorkers(),new o((function(t,o){r.terminate(!1,(function(n){e.onTerminateWorker({forkArgs:r.forkArgs,forkOpts:r.forkOpts,workerThreadOpts:r.workerThreadOpts,script:r.script}),n?o(n):t(r)}))}))},u.prototype._removeWorkerFromList=function(r){var e=this.workers.indexOf(r);-1!==e&&this.workers.splice(e,1)},u.prototype.terminate=function(r,e){var t=this;this.tasks.forEach((function(r){r.resolver.reject(new Error("Pool terminated"))})),this.tasks.length=0;var n=function(r){s.releasePort(r.debugPort),this._removeWorkerFromList(r)}.bind(this),i=[];return this.workers.slice().forEach((function(o){var s=o.terminateAndNotify(r,e).then(n).always((function(){t.onTerminateWorker({forkArgs:o.forkArgs,forkOpts:o.forkOpts,workerThreadOpts:o.workerThreadOpts,script:o.script})}));i.push(s)})),o.all(i)},u.prototype.stats=function(){var r=this.workers.length,e=this.workers.filter((function(r){return r.busy()})).length;return{totalWorkers:r,busyWorkers:e,idleWorkers:r-e,pendingTasks:this.tasks.length,activeTasks:e}},u.prototype._ensureMinWorkers=function(){if(this.minWorkers)for(var r=this.workers.length;r<this.minWorkers;r++)this.workers.push(this._createWorkerHandler())},u.prototype._createWorkerHandler=function(){var r=this.onCreateWorker({forkArgs:this.forkArgs,forkOpts:this.forkOpts,workerOpts:this.workerOpts,workerThreadOpts:this.workerThreadOpts,script:this.script})||{};return new n(r.script||this.script,{forkArgs:r.forkArgs||this.forkArgs,forkOpts:r.forkOpts||this.forkOpts,workerOpts:r.workerOpts||this.workerOpts,workerThreadOpts:r.workerThreadOpts||this.workerThreadOpts,debugPort:s.nextAvailableStartingAt(this.debugPortStart),workerType:this.workerType,workerTerminateTimeout:this.workerTerminateTimeout})},r.exports=u},219:function(r){"use strict";function e(r,i){var s=this;if(!(this instanceof e))throw new SyntaxError("Constructor must be called with the new operator");if("function"!=typeof r)throw new SyntaxError("Function parameter handler(resolve, reject) missing");var u=[],a=[];this.resolved=!1,this.rejected=!1,this.pending=!0;var c=function(r,e){u.push(r),a.push(e)};this.then=function(r,o){return new e((function(e,n){var i=r?t(r,e,n):e,s=o?t(o,e,n):n;c(i,s)}),s)};var f=function(r){return s.resolved=!0,s.rejected=!1,s.pending=!1,u.forEach((function(e){e(r)})),c=function(e,t){e(r)},f=p=function(){},s},p=function(r){return 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n?r.send({id:e.id,result:o.message,error:null},o.transfer):r.send({id:e.id,result:o,error:null}),u=null)}catch(n){r.send({id:e.id,result:null,error:s(n)})}})),r.register=function(e,n){if(e)for(var t in e)e.hasOwnProperty(t)&&(r.methods[t]=e[t]);n&&(r.terminationHandler=n.onTerminate),r.send("ready")},r.emit=function(e){if(u){if(e instanceof n)return void r.send({id:u,isEvent:!0,payload:e.message},e.transfer);r.send({id:u,isEvent:!0,payload:e})}},e.add=r.register,e.emit=r.emit}(n),e(n)}));\n//# sourceMappingURL=worker.min.js.map\n')],{type:"text/javascript"});return window.URL.createObjectURL(e)}return __dirname+"/worker.js"}(),this.worker=function(e,t){if("web"===t.workerType)return o(),p(e,t.workerOpts,Worker);if("thread"===t.workerType)return d(e,i=n(),t.workerThreadOpts);if("process"!==t.workerType&&t.workerType){if("browser"===r.platform)return o(),p(e,t.workerOpts,Worker);var i=f();return i?d(e,i,t.workerThreadOpts):h(e,m(t),require("child_process"))}return h(e,m(t),require("child_process"))}(this.script,s),this.debugPort=s.debugPort,this.forkOpts=s.forkOpts,this.forkArgs=s.forkArgs,this.workerOpts=s.workerOpts,this.workerThreadOpts=s.workerThreadOpts,this.workerTerminateTimeout=s.workerTerminateTimeout,e||(this.worker.ready=!0),this.requestQueue=[],this.worker.on("message",(function(e){if(!i.terminated)if("string"==typeof e&&"ready"===e)i.worker.ready=!0,function(){for(const e of i.requestQueue.splice(0))i.worker.send(e.message,e.transfer)}();else{var r=e.id,t=i.processing[r];void 0!==t&&(e.isEvent?t.options&&"function"==typeof t.options.on&&t.options.on(e.payload):(delete i.processing[r],!0===i.terminating&&i.terminate(),e.error?t.resolver.reject(function(e){for(var r=new Error(""),t=Object.keys(e),n=0;n<t.length;n++)r[t[n]]=e[t[n]];return r}(e.error)):t.resolver.resolve(e.result)))}}));var l=this.worker;this.worker.on("error",c),this.worker.on("exit",(function(e,r){var t="Workerpool Worker terminated Unexpectedly\n";t+=" exitCode: `"+e+"`\n",t+=" signalCode: `"+r+"`\n",t+=" workerpool.script: `"+i.script+"`\n",t+=" spawnArgs: `"+l.spawnargs+"`\n",t+=" spawnfile: `"+l.spawnfile+"`\n",t+=" stdout: `"+l.stdout+"`\n",t+=" stderr: `"+l.stderr+"`\n",c(new Error(t))})),this.processing=Object.create(null),this.terminating=!1,this.terminated=!1,this.cleaning=!1,this.terminationHandler=null,this.lastId=0}return k.prototype.methods=function(){return this.exec("methods")},k.prototype.exec=function(r,t,n,o){n||(n=e.defer());var i=++this.lastId;this.processing[i]={id:i,resolver:n,options:o};var s={message:{id:i,method:r,params:t},transfer:o&&o.transfer};this.terminated?n.reject(new Error("Worker is terminated")):this.worker.ready?this.worker.send(s.message,s.transfer):this.requestQueue.push(s);var u=this;return n.promise.catch((function(r){if(r instanceof e.CancellationError||r instanceof e.TimeoutError)return delete u.processing[i],u.terminateAndNotify(!0).then((function(){throw r}),(function(e){throw e}));throw r}))},k.prototype.busy=function(){return this.cleaning||Object.keys(this.processing).length>0},k.prototype.terminate=function(e,r){var n=this;if(e){for(var o in this.processing)void 0!==this.processing[o]&&this.processing[o].resolver.reject(new Error("Worker terminated"));this.processing=Object.create(null)}if("function"==typeof r&&(this.terminationHandler=r),this.busy())this.terminating=!0;else{var i=function(e){if(n.terminated=!0,n.cleaning=!1,null!=n.worker&&n.worker.removeAllListeners&&n.worker.removeAllListeners("message"),n.worker=null,n.terminating=!1,n.terminationHandler)n.terminationHandler(e,n);else if(e)throw e};if(this.worker){if("function"==typeof this.worker.kill){if(this.worker.killed)return void i(new Error("worker already killed!"));var s=setTimeout((function(){n.worker&&n.worker.kill()}),this.workerTerminateTimeout);return this.worker.once("exit",(function(){clearTimeout(s),n.worker&&(n.worker.killed=!0),i()})),this.worker.ready?this.worker.send(t):this.requestQueue.push({message:t}),void(this.cleaning=!0)}if("function"!=typeof this.worker.terminate)throw new Error("Failed to terminate worker");this.worker.terminate(),this.worker.killed=!0}i()}},k.prototype.terminateAndNotify=function(r,t){var n=e.defer();return t&&n.promise.timeout(t),this.terminate(r,(function(e,r){e?n.reject(e):n.resolve(r)})),n.promise},l.exports=k,l.exports._tryRequireWorkerThreads=f,l.exports._setupProcessWorker=h,l.exports._setupBrowserWorker=p,l.exports._setupWorkerThreadWorker=d,l.exports.ensureWorkerThreads=n,l.exports}function k(){if(h)return d;h=1;var e=s(),r=m(),t=i,n=new(function(){if(p)return f;function e(){this.ports=Object.create(null),this.length=0}return p=1,f=e,e.prototype.nextAvailableStartingAt=function(e){for(;!0===this.ports[e];)e++;if(e>=65535)throw new Error("WorkerPool debug port limit reached: "+e+">= 65535");return this.ports[e]=!0,this.length++,e},e.prototype.releasePort=function(e){delete this.ports[e],this.length--},f}());function o(e,n){"string"==typeof e?this.script=e||null:(this.script=null,n=e),this.workers=[],this.tasks=[],n=n||{},this.forkArgs=Object.freeze(n.forkArgs||[]),this.forkOpts=Object.freeze(n.forkOpts||{}),this.workerOpts=Object.freeze(n.workerOpts||{}),this.workerThreadOpts=Object.freeze(n.workerThreadOpts||{}),this.debugPortStart=n.debugPortStart||43210,this.nodeWorker=n.nodeWorker,this.workerType=n.workerType||n.nodeWorker||"auto",this.maxQueueSize=n.maxQueueSize||1/0,this.workerTerminateTimeout=n.workerTerminateTimeout||1e3,this.onCreateWorker=n.onCreateWorker||(()=>null),this.onTerminateWorker=n.onTerminateWorker||(()=>null),n&&"maxWorkers"in n?(!function(e){if(!u(e)||!a(e)||e<1)throw new TypeError("Option maxWorkers must be an integer number >= 1")}(n.maxWorkers),this.maxWorkers=n.maxWorkers):this.maxWorkers=Math.max((t.cpus||4)-1,1),n&&"minWorkers"in n&&("max"===n.minWorkers?this.minWorkers=this.maxWorkers:(!function(e){if(!u(e)||!a(e)||e<0)throw new TypeError("Option minWorkers must be an integer number >= 0")}(n.minWorkers),this.minWorkers=n.minWorkers,this.maxWorkers=Math.max(this.minWorkers,this.maxWorkers)),this._ensureMinWorkers()),this._boundNext=this._next.bind(this),"thread"===this.workerType&&r.ensureWorkerThreads()}function u(e){return"number"==typeof e}function a(e){return Math.round(e)==e}return o.prototype.exec=function(r,t,n){if(t&&!Array.isArray(t))throw new TypeError('Array expected as argument "params"');if("string"==typeof r){var o=e.defer();if(this.tasks.length>=this.maxQueueSize)throw new Error("Max queue size of "+this.maxQueueSize+" reached");var i=this.tasks,s={method:r,params:t,resolver:o,timeout:null,options:n};i.push(s);var u=o.promise.timeout;return o.promise.timeout=function(e){return-1!==i.indexOf(s)?(s.timeout=e,o.promise):u.call(o.promise,e)},this._next(),o.promise}if("function"==typeof r)return this.exec("run",[String(r),t]);throw new TypeError('Function or string expected as argument "method"')},o.prototype.proxy=function(){if(arguments.length>0)throw new Error("No arguments expected");var e=this;return this.exec("methods").then((function(r){var t={};return r.forEach((function(r){t[r]=function(){return e.exec(r,Array.prototype.slice.call(arguments))}})),t}))},o.prototype._next=function(){if(this.tasks.length>0){var e=this._getWorker();if(e){var r=this,t=this.tasks.shift();if(t.resolver.promise.pending){var n=e.exec(t.method,t.params,t.resolver,t.options).then(r._boundNext).catch((function(){if(e.terminated)return r._removeWorker(e)})).then((function(){r._next()}));"number"==typeof t.timeout&&n.timeout(t.timeout)}else r._next()}}},o.prototype._getWorker=function(){for(var e=this.workers,r=0;r<e.length;r++){var t=e[r];if(!1===t.busy())return t}return e.length<this.maxWorkers?(t=this._createWorkerHandler(),e.push(t),t):null},o.prototype._removeWorker=function(r){var t=this;return n.releasePort(r.debugPort),this._removeWorkerFromList(r),this._ensureMinWorkers(),new e((function(e,n){r.terminate(!1,(function(o){t.onTerminateWorker({forkArgs:r.forkArgs,forkOpts:r.forkOpts,workerThreadOpts:r.workerThreadOpts,script:r.script}),o?n(o):e(r)}))}))},o.prototype._removeWorkerFromList=function(e){var r=this.workers.indexOf(e);-1!==r&&this.workers.splice(r,1)},o.prototype.terminate=function(r,t){var o=this;this.tasks.forEach((function(e){e.resolver.reject(new Error("Pool terminated"))})),this.tasks.length=0;var i=function(e){n.releasePort(e.debugPort),this._removeWorkerFromList(e)}.bind(this),s=[];return this.workers.slice().forEach((function(e){var n=e.terminateAndNotify(r,t).then(i).always((function(){o.onTerminateWorker({forkArgs:e.forkArgs,forkOpts:e.forkOpts,workerThreadOpts:e.workerThreadOpts,script:e.script})}));s.push(n)})),e.all(s)},o.prototype.stats=function(){var e=this.workers.length,r=this.workers.filter((function(e){return e.busy()})).length;return{totalWorkers:e,busyWorkers:r,idleWorkers:e-r,pendingTasks:this.tasks.length,activeTasks:r}},o.prototype._ensureMinWorkers=function(){if(this.minWorkers)for(var e=this.workers.length;e<this.minWorkers;e++)this.workers.push(this._createWorkerHandler())},o.prototype._createWorkerHandler=function(){const e=this.onCreateWorker({forkArgs:this.forkArgs,forkOpts:this.forkOpts,workerOpts:this.workerOpts,workerThreadOpts:this.workerThreadOpts,script:this.script})||{};return new r(e.script||this.script,{forkArgs:e.forkArgs||this.forkArgs,forkOpts:e.forkOpts||this.forkOpts,workerOpts:e.workerOpts||this.workerOpts,workerThreadOpts:e.workerThreadOpts||this.workerThreadOpts,debugPort:n.nextAvailableStartingAt(this.debugPortStart),workerType:this.workerType,workerTerminateTimeout:this.workerTerminateTimeout})},d=o}var w,y,g,v={};function x(){if(y)return w;return y=1,w=function(e,r){this.message=e,this.transfer=r}}function b(){return g||(g=1,function(e){var r=x(),t={exit:function(){}};if("undefined"!=typeof self&&"function"==typeof postMessage&&"function"==typeof addEventListener)t.on=function(e,r){addEventListener(e,(function(e){r(e.data)}))},t.send=function(e){postMessage(e)};else{if("undefined"==typeof process)throw new Error("Script must be executed as a worker");var n;try{n=require("worker_threads")}catch(e){if("object"!=typeof e||null===e||"MODULE_NOT_FOUND"!==e.code)throw e}if(n&&null!==n.parentPort){var o=n.parentPort;t.send=o.postMessage.bind(o),t.on=o.on.bind(o),t.exit=process.exit.bind(process)}else t.on=process.on.bind(process),t.send=function(e){process.send(e)},t.on("disconnect",(function(){process.exit(1)})),t.exit=process.exit.bind(process)}function i(e){return Object.getOwnPropertyNames(e).reduce((function(r,t){return Object.defineProperty(r,t,{value:e[t],enumerable:!0})}),{})}function s(e){return e&&"function"==typeof e.then&&"function"==typeof e.catch}t.methods={},t.methods.run=function(e,r){var t=new Function("return ("+e+").apply(null, arguments);");return t.apply(t,r)},t.methods.methods=function(){return Object.keys(t.methods)},t.terminationHandler=void 0,t.cleanupAndExit=function(e){var r=function(){t.exit(e)};if(!t.terminationHandler)return r();var n=t.terminationHandler(e);s(n)?n.then(r,r):r()};var u=null;t.on("message",(function(e){if("__workerpool-terminate__"===e)return t.cleanupAndExit(0);try{var n=t.methods[e.method];if(!n)throw new Error('Unknown method "'+e.method+'"');u=e.id;var o=n.apply(n,e.params);s(o)?o.then((function(n){n instanceof r?t.send({id:e.id,result:n.message,error:null},n.transfer):t.send({id:e.id,result:n,error:null}),u=null})).catch((function(r){t.send({id:e.id,result:null,error:i(r)}),u=null})):(o instanceof r?t.send({id:e.id,result:o.message,error:null},o.transfer):t.send({id:e.id,result:o,error:null}),u=null)}catch(r){t.send({id:e.id,result:null,error:i(r)})}})),t.register=function(e,r){if(e)for(var n in e)e.hasOwnProperty(n)&&(t.methods[n]=e[n]);r&&(t.terminationHandler=r.onTerminate),t.send("ready")},t.emit=function(e){if(u){if(e instanceof r)return void t.send({id:u,isEvent:!0,payload:e.message},e.transfer);t.send({id:u,isEvent:!0,payload:e})}},e.add=t.register,e.emit=t.emit}(v)),v}var O=i,T=r.pool=function(e,r){return new(k())(e,r)},W=r.worker=function(e,r){var t=b();t.add(e,r)},E=r.workerEmit=function(e){b().emit(e)},_=r.Promise=s(),j=r.Transfer=x(),A=r.platform=O.platform,P=r.isMainThread=O.isMainThread,M=r.cpus=O.cpus;e.Promise=_,e.Transfer=j,e.cpus=M,e.default=r,e.isMainThread=P,e.platform=A,e.pool=T,e.worker=W,e.workerEmit=E,Object.defineProperty(e,"__esModule",{value:!0})}));
//# sourceMappingURL=workerpool.min.js.map

4

dist/workerpool.min.js.LICENSE.txt

@@ -7,4 +7,4 @@ /**

*
* @version 6.5.1
* @date 2023-10-11
* @version @@version
* @date @@date
*

@@ -11,0 +11,0 @@ * @license

8

HISTORY.md

@@ -5,2 +5,10 @@ # workerpool history

## 2023-11-25, version 7.0.0
WARNING: The setup to bundle `workerpool` has been replaced. This should
be a drop-in replacement, but it may have impact depending on your setup.
- Switched build setup from Webpack to Rollup, see #403. Thanks @KonghaYao.
## 2023-10-11, version 6.5.1

@@ -7,0 +15,0 @@

24

package.json
{
"name": "workerpool",
"license": "Apache-2.0",
"version": "6.5.1",
"version": "7.0.0",
"description": "Offload tasks to a pool of workers on node.js and in the browser",

@@ -29,4 +29,4 @@ "homepage": "https://github.com/josdejong/workerpool",

"scripts": {
"build": "gulp",
"watch": "gulp watch",
"build": "rollup -c rollup.config.mjs",
"watch": "rollup -c rollup.config.mjs -w",
"test": "npm run build && mocha test",

@@ -38,16 +38,16 @@ "test:debug": "npm run build && mocha debug test",

"devDependencies": {
"@babel/core": "7.23.0",
"@babel/preset-env": "7.22.20",
"babel-loader": "9.1.3",
"@babel/core": "7.23.2",
"@babel/preset-env": "7.23.2",
"@rollup/plugin-babel": "6.0.4",
"@rollup/plugin-commonjs": "25.0.7",
"@rollup/plugin-json": "6.0.1",
"@rollup/plugin-node-resolve": "15.2.3",
"@rollup/plugin-terser": "0.4.4",
"c8": "8.0.1",
"date-format": "4.0.14",
"del": "6.1.1",
"fancy-log": "2.0.0",
"fs-extra": "11.1.1",
"find-process": "1.4.7",
"gulp": "4.0.2",
"handlebars": "4.7.8",
"mocha": "10.2.0",
"uglify-js": "3.17.4",
"webpack": "5.88.2"
"rollup": "4.1.4"
}
}

12

src/environment.js

@@ -1,2 +0,1 @@

var requireFoolWebpack = require('./requireFoolWebpack');

@@ -20,3 +19,3 @@ // source: https://github.com/flexdinesh/browser-or-node

// note that in node.js we have to check both worker_thread and child_process
var worker_threads = tryRequireFoolWebpack('worker_threads');
var worker_threads = module.exports.platform === 'node' && require('worker_threads');
module.exports.isMainThread = module.exports.platform === 'node'

@@ -29,10 +28,3 @@ ? ((!worker_threads || worker_threads.isMainThread) && !process.connected)

? self.navigator.hardwareConcurrency
: requireFoolWebpack('os').cpus().length;
: require('os').cpus().length;
function tryRequireFoolWebpack (module) {
try {
return requireFoolWebpack(module);
} catch(err) {
return null
}
}

2

src/generated/embeddedWorker.js

@@ -6,2 +6,2 @@ /**

*/
module.exports = "!function(){var __webpack_modules__={577:function(e){e.exports=function(e,r){this.message=e,this.transfer=r}}},__webpack_module_cache__={};function __webpack_require__(e){var r=__webpack_module_cache__[e];return void 0!==r||(r=__webpack_module_cache__[e]={exports:{}},__webpack_modules__[e](r,r.exports,__webpack_require__)),r.exports}var __webpack_exports__={};!function(){var exports=__webpack_exports__,__webpack_unused_export__;function _typeof(e){return(_typeof=\"function\"==typeof Symbol&&\"symbol\"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&\"function\"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?\"symbol\":typeof e})(e)}var Transfer=__webpack_require__(577),requireFoolWebpack=eval(\"typeof require !== 'undefined' ? require : function (module) { throw new Error('Module \\\" + module + \\\" not found.') }\"),TERMINATE_METHOD_ID=\"__workerpool-terminate__\",worker={exit:function(){}},WorkerThreads,parentPort;if(\"undefined\"!=typeof self&&\"function\"==typeof postMessage&&\"function\"==typeof addEventListener)worker.on=function(e,r){addEventListener(e,function(e){r(e.data)})},worker.send=function(e){postMessage(e)};else{if(\"undefined\"==typeof process)throw new Error(\"Script must be executed as a worker\");try{WorkerThreads=requireFoolWebpack(\"worker_threads\")}catch(error){if(\"object\"!==_typeof(error)||null===error||\"MODULE_NOT_FOUND\"!==error.code)throw error}WorkerThreads&&null!==WorkerThreads.parentPort?(parentPort=WorkerThreads.parentPort,worker.send=parentPort.postMessage.bind(parentPort),worker.on=parentPort.on.bind(parentPort)):(worker.on=process.on.bind(process),worker.send=function(e){process.send(e)},worker.on(\"disconnect\",function(){process.exit(1)})),worker.exit=process.exit.bind(process)}function convertError(o){return Object.getOwnPropertyNames(o).reduce(function(e,r){return Object.defineProperty(e,r,{value:o[r],enumerable:!0})},{})}function isPromise(e){return e&&\"function\"==typeof e.then&&\"function\"==typeof e.catch}worker.methods={},worker.methods.run=function(e,r){e=new Function(\"return (\"+e+\").apply(null, arguments);\");return e.apply(e,r)},worker.methods.methods=function(){return Object.keys(worker.methods)},worker.terminationHandler=void 0,worker.cleanupAndExit=function(e){function r(){worker.exit(e)}if(!worker.terminationHandler)return r();var o=worker.terminationHandler(e);isPromise(o)?o.then(r,r):r()};var currentRequestId=null;worker.on(\"message\",function(r){if(r===TERMINATE_METHOD_ID)return worker.cleanupAndExit(0);try{var e=worker.methods[r.method];if(!e)throw new Error('Unknown method \"'+r.method+'\"');currentRequestId=r.id;var o=e.apply(e,r.params);isPromise(o)?o.then(function(e){e instanceof Transfer?worker.send({id:r.id,result:e.message,error:null},e.transfer):worker.send({id:r.id,result:e,error:null}),currentRequestId=null}).catch(function(e){worker.send({id:r.id,result:null,error:convertError(e)}),currentRequestId=null}):(o instanceof Transfer?worker.send({id:r.id,result:o.message,error:null},o.transfer):worker.send({id:r.id,result:o,error:null}),currentRequestId=null)}catch(e){worker.send({id:r.id,result:null,error:convertError(e)})}}),worker.register=function(e,r){if(e)for(var o in e)e.hasOwnProperty(o)&&(worker.methods[o]=e[o]);r&&(worker.terminationHandler=r.onTerminate),worker.send(\"ready\")},worker.emit=function(e){currentRequestId&&(e instanceof Transfer?worker.send({id:currentRequestId,isEvent:!0,payload:e.message},e.transfer):worker.send({id:currentRequestId,isEvent:!0,payload:e}))},__webpack_unused_export__=worker.register,worker.emit}()}();";
module.exports = "!function(e,n){\"object\"==typeof exports&&\"undefined\"!=typeof module?module.exports=n():\"function\"==typeof define&&define.amd?define(n):(e=\"undefined\"!=typeof globalThis?globalThis:e||self).worker=n()}(this,(function(){\"use strict\";function e(e){return e&&e.__esModule&&Object.prototype.hasOwnProperty.call(e,\"default\")?e.default:e}var n={};var t=function(e,n){this.message=e,this.transfer=n};return function(e){var n=t,r={exit:function(){}};if(\"undefined\"!=typeof self&&\"function\"==typeof postMessage&&\"function\"==typeof addEventListener)r.on=function(e,n){addEventListener(e,(function(e){n(e.data)}))},r.send=function(e){postMessage(e)};else{if(\"undefined\"==typeof process)throw new Error(\"Script must be executed as a worker\");var o;try{o=require(\"worker_threads\")}catch(e){if(\"object\"!=typeof e||null===e||\"MODULE_NOT_FOUND\"!==e.code)throw e}if(o&&null!==o.parentPort){var i=o.parentPort;r.send=i.postMessage.bind(i),r.on=i.on.bind(i),r.exit=process.exit.bind(process)}else r.on=process.on.bind(process),r.send=function(e){process.send(e)},r.on(\"disconnect\",(function(){process.exit(1)})),r.exit=process.exit.bind(process)}function s(e){return Object.getOwnPropertyNames(e).reduce((function(n,t){return Object.defineProperty(n,t,{value:e[t],enumerable:!0})}),{})}function d(e){return e&&\"function\"==typeof e.then&&\"function\"==typeof e.catch}r.methods={},r.methods.run=function(e,n){var t=new Function(\"return (\"+e+\").apply(null, arguments);\");return t.apply(t,n)},r.methods.methods=function(){return Object.keys(r.methods)},r.terminationHandler=void 0,r.cleanupAndExit=function(e){var n=function(){r.exit(e)};if(!r.terminationHandler)return n();var t=r.terminationHandler(e);d(t)?t.then(n,n):n()};var u=null;r.on(\"message\",(function(e){if(\"__workerpool-terminate__\"===e)return r.cleanupAndExit(0);try{var t=r.methods[e.method];if(!t)throw new Error('Unknown method \"'+e.method+'\"');u=e.id;var o=t.apply(t,e.params);d(o)?o.then((function(t){t instanceof n?r.send({id:e.id,result:t.message,error:null},t.transfer):r.send({id:e.id,result:t,error:null}),u=null})).catch((function(n){r.send({id:e.id,result:null,error:s(n)}),u=null})):(o instanceof n?r.send({id:e.id,result:o.message,error:null},o.transfer):r.send({id:e.id,result:o,error:null}),u=null)}catch(n){r.send({id:e.id,result:null,error:s(n)})}})),r.register=function(e,n){if(e)for(var t in e)e.hasOwnProperty(t)&&(r.methods[t]=e[t]);n&&(r.terminationHandler=n.onTerminate),r.send(\"ready\")},r.emit=function(e){if(u){if(e instanceof n)return void r.send({id:u,isEvent:!0,payload:e.message},e.transfer);r.send({id:u,isEvent:!0,payload:e})}},e.add=r.register,e.emit=r.emit}(n),e(n)}));\n//# sourceMappingURL=worker.min.js.map\n";

9

src/worker.js

@@ -7,9 +7,2 @@ /**

// source of inspiration: https://github.com/sindresorhus/require-fool-webpack
var requireFoolWebpack = eval(
'typeof require !== \'undefined\'' +
' ? require' +
' : function (module) { throw new Error(\'Module " + module + " not found.\') }'
);
/**

@@ -44,3 +37,3 @@ * Special message sent by parent which causes the worker to terminate itself.

try {
WorkerThreads = requireFoolWebpack('worker_threads');
WorkerThreads = require('worker_threads');
} catch(error) {

@@ -47,0 +40,0 @@ if (typeof error === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {

7

src/WorkerHandler.js

@@ -5,3 +5,2 @@ 'use strict';

var environment = require('./environment');
var requireFoolWebpack = require('./requireFoolWebpack');

@@ -33,3 +32,3 @@ /**

try {
return requireFoolWebpack('worker_threads');
return require('worker_threads');
} catch(error) {

@@ -74,3 +73,3 @@ if (typeof error === 'object' && error !== null && error.code === 'MODULE_NOT_FOUND') {

} else if (options.workerType === 'process' || !options.workerType) { // node.js only
return setupProcessWorker(script, resolveForkOptions(options), requireFoolWebpack('child_process'));
return setupProcessWorker(script, resolveForkOptions(options), require('child_process'));
} else { // options.workerType === 'auto' or undefined

@@ -86,3 +85,3 @@ if (environment.platform === 'browser') {

} else {
return setupProcessWorker(script, resolveForkOptions(options), requireFoolWebpack('child_process'));
return setupProcessWorker(script, resolveForkOptions(options), require('child_process'));
}

@@ -89,0 +88,0 @@ }

dist/worker.js.map

Sorry, the diff of this file is not supported yet

dist/workerpool.js.map

Sorry, the diff of this file is not supported yet

dist/workerpool.min.js.map

Sorry, the diff of this file is not supported yet

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