text: /**
   * workerpool.js
   * https://github.com/josdejong/workerpool
   *
   * Offload tasks to a pool of workers on node.js and in the browser.
   *
   * @version 3.1.2
   * @date    2019-03-14
   *
   * @license
   * Copyright (C) 2014-2016 Jos de Jong <wjosdejong@gmail.com>
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy
   * of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  
  (function webpackUniversalModuleDefinition(root, factory) {
  	if(typeof exports === 'object' && typeof module === 'object')
  		module.exports = factory(require("os"), (function webpackLoadOptionalExternalModule() { try { return require("worker_threads"); } catch(e) {} }()), require("child_process"));
  	else if(typeof define === 'function' && define.amd)
  		define(["os", "worker_threads", "child_process"], factory);
  	else if(typeof exports === 'object')
  		exports["workerpool"] = factory(require("os"), (function webpackLoadOptionalExternalModule() { try { return require("worker_threads"); } catch(e) {} }()), require("child_process"));
  	else
  		root["workerpool"] = factory(root["os"], root["worker_threads"], root["child_process"]);
  })(this, function(__WEBPACK_EXTERNAL_MODULE_2__, __WEBPACK_EXTERNAL_MODULE_12__, __WEBPACK_EXTERNAL_MODULE_13__) {
  return /******/ (function(modules) { // webpackBootstrap
  /******/ 	// The module cache
  /******/ 	var installedModules = {};
  
  /******/ 	// The require function
  /******/ 	function __webpack_require__(moduleId) {
  
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  /******/ 		if(installedModules[moduleId])
  /******/ 			return installedModules[moduleId].exports;
  
  /******/ 		// Create a new module (and put it into the cache)
  /******/ 		var module = installedModules[moduleId] = {
  /******/ 			exports: {},
  /******/ 			id: moduleId,
  /******/ 			loaded: false
  /******/ 		};
  
  /******/ 		// Execute the module function
  /******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
  
  /******/ 		// Flag the module as loaded
  /******/ 		module.loaded = true;
  
  /******/ 		// Return the exports of the module
  /******/ 		return module.exports;
  /******/ 	}
  
  
  /******/ 	// expose the modules object (__webpack_modules__)
  /******/ 	__webpack_require__.m = modules;
  
  /******/ 	// expose the module cache
  /******/ 	__webpack_require__.c = installedModules;
  
  /******/ 	// __webpack_public_path__
  /******/ 	__webpack_require__.p = "";
  
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  /******/ 	return __webpack_require__(0);
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  /******/ ([
  /* 0 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	var environment = __webpack_require__(1);
  
  	/**
  	 * Create a new worker pool
  	 * @param {Object} [options]
  	 * @returns {Pool} pool
  	 */
  	exports.pool = function pool(script, options) {
  	  var Pool = __webpack_require__(3);
  
  	  return new Pool(script, options);
  	};
  
  	/**
  	 * Create a worker and optionally register a set of methods to the worker.
  	 * @param {Object} [methods]
  	 */
  	exports.worker = function worker(methods) {
  	  var worker = __webpack_require__(11);
  	  worker.add(methods);
  	};
  
  	/**
  	 * Create a promise.
  	 * @type {Promise} promise
  	 */
  	exports.Promise = __webpack_require__(4);
  
  	exports.platform = environment.platform;
  	exports.isMainThread = environment.isMainThread;
  	exports.cpus = environment.cpus;
  
  /***/ }),
  /* 1 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	// determines the JavaScript platform: browser or node
  	module.exports.platform = typeof Window !== 'undefined' || typeof WorkerGlobalScope !== 'undefined' ? 'browser' : 'node';
  
  	// determines whether the code is running in main thread or not
  	module.exports.isMainThread = module.exports.platform === 'browser' ? typeof Window !== 'undefined' : !process.connected;
  
  	// determines the number of cpus available
  	module.exports.cpus = module.exports.platform === 'browser'
  	    ? self.navigator.hardwareConcurrency
  	    : __webpack_require__(2).cpus().length;
  
  
  /***/ }),
  /* 2 */
  /***/ (function(module, exports) {
  
  	module.exports = require("os");
  
  /***/ }),
  /* 3 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	var Promise = __webpack_require__(4);
  	var WorkerHandler = __webpack_require__(5);
  	var environment = __webpack_require__(1);
  	var DebugPortAllocator = __webpack_require__(8);
  	var DEBUG_PORT_ALLOCATOR = new DebugPortAllocator();
  	/**
  	 * A pool to manage workers
  	 * @param {String} [script]   Optional worker script
  	 * @param {Object} [options]  Available options: maxWorkers: Number
  	 * @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 = options.forkArgs || [];
  	  this.forkOpts = options.forkOpts || {};
  	  this.debugPortStart = (options.debugPortStart || 43210);
  	  this.nodeWorker = options.nodeWorker;
  
  	  // 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 = Math.max((environment.cpus || 4) - 1, 1);
  	    } else {
  	      validateMinWorkers(options.minWorkers);
  	      this.minWorkers = options.minWorkers;
  	      this.maxWorkers = Math.max(this.minWorkers, this.maxWorkers);     // in case minWorkers is higher than maxWorkers
  	    }
  	    this._ensureMinWorkers();
  	  }
  
  	  this._boundNext = this._next.bind(this);
  
  
  	  if (this.nodeWorker === 'thread') {
  	    WorkerHandler.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
  	 * @return {Promise.<*, Error>} result
  	 */
  	Pool.prototype.exec = function (method, params) {
  	  // 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();
  
  	    // add a new task to the queue
  	    var tasks = this.tasks;
  	    var task = {
  	      method:  method,
  	      params:  params,
  	      resolver: resolver,
  	      timeout: null
  	    };
  	    tasks.push(task);
  
  	    // 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);
  	      }
  	    };
  
  	    // 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;
  	      });
  	};
  
  	/**
  	 * 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
  
  	    // 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)
  	          .then(me._boundNext)
  	          .catch(function () {
  	            // if the worker crashed and terminated, remove it from the pool
  	            if (worker.terminated) {
  	              me._removeWorker(worker);
  	              // If minWorkers set, spin up new workers to replace the crashed ones
  	              me._ensureMinWorkers();
  	            }
  	            me._next(); // trigger next task in the queue
  	          });
  
  	        // 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();
  	      }
  	    }
  	  }
  	};
  
  	/**
  	 * 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 = new WorkerHandler(this.script, {
  	      forkArgs: this.forkArgs,
  	      forkOpts: this.forkOpts,
  	      debugPort: DEBUG_PORT_ALLOCATOR.nextAvailableStartingAt(this.debugPortStart),
  	      nodeWorker: this.nodeWorker
  	    });
  	    workers.push(worker);
  	    return worker;
  	  }
  
  	  return null;
  	};
  
  	/**
  	 * Remove a worker from the pool. For example after a worker terminated for
  	 * whatever reason
  	 * @param {WorkerHandler} worker
  	 * @protected
  	 */
  	Pool.prototype._removeWorker = function(worker) {
  	  DEBUG_PORT_ALLOCATOR.releasePort(worker.debugPort)
  	  // terminate the worker (if not already terminated)
  	  worker.terminate();
  	  this._removeWorkerFromList(worker);
  	};
  
  	/**
  	 * 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 f = function (worker) {
  	    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);
  	    promises.push(termPromise);
  	  });
  	  return Promise.all(promises);
  	};
  
  	// DEPRECATED
  	/**
  	 * Close all active workers. Unlike terminate, this function does not return a promise.
  	 * @param force
  	 */
  	Pool.prototype.clear = function (force) {
  	  this.terminate(force);
  	};
  
  	/**
  	 * 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(new WorkerHandler(this.script, {
  	        forkArgs: this.forkArgs,
  	        forkOpts: this.forkOpts,
  	        debugPort: DEBUG_PORT_ALLOCATOR.nextAvailableStartingAt(this.debugPortStart)
  	      }));
  	    }
  	  }
  	};
  
  	/**
  	 * 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');
  	  }
  	}
  
  	/**
  	 * 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;
  
  
  /***/ }),
  /* 4 */
  /***/ (function(module, exports) {
  
  	'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
  	   */
  	  var _process = function (onSuccess, onFail) {
  	    _onSuccess.push(onSuccess);
  	    _onFail.push(onFail);
  	  };
  
  	  /**
  	   * 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);
  	  };
  
  	  /**
  	   * 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;
  	  };
  
  	  /**
  	   * 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;
  	  };
  
  	  /**
  	   * 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());
  	    }
  
  	    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);
  	  });
  	}
  
  	/**
  	 * 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);
  	    }
  	  }
  	}
  
  	/**
  	 * 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 (error) {
  	          remaining = 0;
  	          reject(error);
  	        });
  	      });
  	    }
  	    else {
  	      resolve(results);
  	    }
  	  });
  	};
  
  	/**
  	 * 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;
  
  
  /***/ }),
  /* 5 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	var Promise = __webpack_require__(4);
  	var assign = __webpack_require__(6);
  
  	// determine environment
  	var environment = __webpack_require__(1);
  
  	function ensureWorkerThreads() {
  	  var WorkerThreads = tryRequire('worker_threads')
  	  if (!WorkerThreads) {
  	    throw new Error('WorkerPool: nodeWorkers = thread is not supported, Node >= 11.7.0 required')
  	  }
  
  	  return WorkerThreads;
  	}
  
  	function tryRequire(moduleName) {
  	  try {
  	    return __webpack_require__(7)(moduleName);
  	  } catch(error) {
  	    if (typeof error === 'object' && error !== null && error.code == 'MODULE_NOT_FOUND') {
  	      return null;
  	      // no worker_threads, fallback to sub-process based workers
  	    } else {
  	      throw 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');
  	    }
  
  	    // use embedded worker.js
  	    var blob = new Blob([__webpack_require__(9)], {type: 'text/javascript'});
  	    return window.URL.createObjectURL(blob);
  	  }
  	  else {
  	    // use external worker.js in current directory
  	    return __dirname + '/worker.js';
  	  }
  	}
  
  	function setupBrowserWorker(script, Worker) {
  	  // create the web worker
  	  var worker = new Worker(script);
  
  	  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) {
  	    this.postMessage(message);
  	  };
  	  return worker;
  	}
  
  	function setupWorkerThreadWorker(script, WorkerThreads) {
  	  var worker = new WorkerThreads.Worker(script, {
  	    stdout: false, // automatically pipe worker.STDOUT to process.STDOUT
  	    stderr: false  // automatically pipe worker.STDERR to process.STDERR
  	  });
  	  worker.isWorkerThread = true;
  	  // make the worker mimic a child_process
  	  worker.send = function(message) {
  	    this.postMessage(message);
  	  };
  
  	  worker.kill = function() {
  	    this.terminate();
  	  };
  
  	  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
  	  );
  
  	  worker.isChildProcess = true;
  	  return worker;
  	}
  
  	// 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');
  	    }
  	  }
  
  	  return assign({}, opts, {
  	    forkArgs: opts.forkArgs,
  	    forkOpts: assign({}, opts.forkOpts, {
  	      execArgv: (opts.forkOpts && opts.forkOpts.execArgv || [])
  	      .concat(execArgv)
  	    })
  	  });
  	}
  
  	/**
  	 * 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
  	}
  
  	/**
  	 * 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.
  	 * @constructor
  	 */
  	function WorkerHandler(script, _options) {
  	  this.script = script || getDefaultWorker();
  	  var options = _options || {};
  	  this.debugPort = options.debugPort;
  
  	  if (environment.platform == 'browser') {
  	    // check whether Worker is supported by the browser
  	    // 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 by the browser');
  	    }
  
  	    this.worker = setupBrowserWorker(this.script, Worker);
  	  } else {
  	    var WorkerThreads;
  
  	    if (options.nodeWorker === 'thread') {
  	      WorkerThreads = ensureWorkerThreads();
  	      this.worker = setupWorkerThreadWorker(this.script, WorkerThreads);
  	    } else if (options.nodeWorker === 'auto') {
  	      WorkerThreads = tryRequire('worker_threads');
  	      if (WorkerThreads) {
  	        this.worker = setupWorkerThreadWorker(this.script, WorkerThreads);
  	      } else {
  	        this.worker = setupProcessWorker(this.script, resolveForkOptions(options), __webpack_require__(13));
  	      }
  	    } else {
  	      this.worker = setupProcessWorker(this.script, resolveForkOptions(options), __webpack_require__(13));
  	    }
  	  }
  
  	  var me = this;
  
  	  // 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 (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) {
  	        // 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();
  	        }
  
  	        // resolve the task's promise
  	        if (response.error) {
  	          task.resolver.reject(objectToError(response.error));
  	        }
  	        else {
  	          task.resolver.resolve(response.result);
  	        }
  	      }
  	    }
  	  });
  
  	  // reject all running tasks on worker error
  	  function onError(error) {
  	    me.terminated = true;
  	    if (me.terminating && me.terminationHandler) {
  	      me.terminationHandler(me);
  	    }
  	    me.terminating = false;
  
  	    for (var id in me.processing) {
  	      if (me.processing[id] !== undefined) {
  	        me.processing[id].resolver.reject(error);
  	      }
  	    }
  	    me.processing = Object.create(null);
  	  }
  
  	  // send all queued requests to worker
  	  function dispatchQueuedRequests()
  	  {
  	    me.requestQueue.forEach(me.worker.send.bind(me.worker));
  	    me.requestQueue = [];
  	  }
  
  	  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.terminationHandler = null;
  	  this.lastId = 0;
  	}
  
  	/**
  	 * Get a list with methods available on the worker.
  	 * @return {Promise.<String[], Error>} methods
  	 */
  	WorkerHandler.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]
  	 * @return {Promise.<*, Error>} result
  	 */
  	WorkerHandler.prototype.exec = function(method, params, resolver) {
  	  if (!resolver) {
  	    resolver = Promise.defer();
  	  }
  
  	  // generate a unique id for the task
  	  var id = ++this.lastId;
  
  	  // register a new task as being in progress
  	  this.processing[id] = {
  	    id: id,
  	    resolver: resolver
  	  };
  
  	  // build a JSON-RPC request
  	  var request = {
  	    id: id,
  	    method: method,
  	    params: params
  	  };
  
  	  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);
  	  } else {
  	    this.requestQueue.push(request);
  	  }
  
  	  // on cancellation, force the worker to terminate
  	  var me = this;
  	  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 worker
  	        me.terminate(true);
  	      } else {
  	        throw error;
  	      }
  	    });
  
  	  return resolver.promise;
  	};
  
  	/**
  	 * Test whether the worker is working or not
  	 * @return {boolean} Returns true if the worker is busy
  	 */
  	WorkerHandler.prototype.busy = function () {
  	  return Object.keys(this.processing).length > 0;
  	};
  
  	/**
  	 * 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) {
  	  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
  	    if (this.worker) {
  	      if (typeof this.worker.kill === 'function') {
  	        this.worker.kill();  // child process
  	      }
  	      else if (typeof this.worker.terminate === 'function') {
  	        this.worker.terminate(); // web worker
  	      }
  	      else {
  	        throw new Error('Failed to terminate worker');
  	      }
  	      this.worker = null;
  	    }
  	    this.terminating = false;
  	    this.terminated = true;
  	    if (this.terminationHandler) {
  	      this.terminationHandler(this);
  	    }
  	  }
  	  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(worker) {
  	    resolver.resolve(worker);
  	  });
  	  return resolver.promise;
  	};
  
  	module.exports = WorkerHandler;
  	module.exports._tryRequire = tryRequire;
  	module.exports._setupProcessWorker = setupProcessWorker;
  	module.exports._setupBrowserWorker = setupBrowserWorker;
  	module.exports._setupWorkerThreadWorker = setupWorkerThreadWorker;
  	module.exports.ensureWorkerThreads = ensureWorkerThreads;
  
  
  /***/ }),
  /* 6 */
  /***/ (function(module, exports) {
  
  	/*
  	object-assign
  	(c) Sindre Sorhus
  	@license MIT
  	*/
  
  	'use strict';
  	/* eslint-disable no-unused-vars */
  	var getOwnPropertySymbols = Object.getOwnPropertySymbols;
  	var hasOwnProperty = Object.prototype.hasOwnProperty;
  	var propIsEnumerable = Object.prototype.propertyIsEnumerable;
  
  	function toObject(val) {
  		if (val === null || val === undefined) {
  			throw new TypeError('Object.assign cannot be called with null or undefined');
  		}
  
  		return Object(val);
  	}
  
  	function shouldUseNative() {
  		try {
  			if (!Object.assign) {
  				return false;
  			}
  
  			// Detect buggy property enumeration order in older V8 versions.
  
  			// https://bugs.chromium.org/p/v8/issues/detail?id=4118
  			var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
  			test1[5] = 'de';
  			if (Object.getOwnPropertyNames(test1)[0] === '5') {
  				return false;
  			}
  
  			// https://bugs.chromium.org/p/v8/issues/detail?id=3056
  			var test2 = {};
  			for (var i = 0; i < 10; i++) {
  				test2['_' + String.fromCharCode(i)] = i;
  			}
  			var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
  				return test2[n];
  			});
  			if (order2.join('') !== '0123456789') {
  				return false;
  			}
  
  			// https://bugs.chromium.org/p/v8/issues/detail?id=3056
  			var test3 = {};
  			'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
  				test3[letter] = letter;
  			});
  			if (Object.keys(Object.assign({}, test3)).join('') !==
  					'abcdefghijklmnopqrst') {
  				return false;
  			}
  
  			return true;
  		} catch (err) {
  			// We don't expect any of the above to throw, but better to be safe.
  			return false;
  		}
  	}
  
  	module.exports = shouldUseNative() ? Object.assign : function (target, source) {
  		var from;
  		var to = toObject(target);
  		var symbols;
  
  		for (var s = 1; s < arguments.length; s++) {
  			from = Object(arguments[s]);
  
  			for (var key in from) {
  				if (hasOwnProperty.call(from, key)) {
  					to[key] = from[key];
  				}
  			}
  
  			if (getOwnPropertySymbols) {
  				symbols = getOwnPropertySymbols(from);
  				for (var i = 0; i < symbols.length; i++) {
  					if (propIsEnumerable.call(from, symbols[i])) {
  						to[symbols[i]] = from[symbols[i]];
  					}
  				}
  			}
  		}
  
  		return to;
  	};
  
  
  /***/ }),
  /* 7 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	var map = {
  		"./Pool": 3,
  		"./Pool.js": 3,
  		"./Promise": 4,
  		"./Promise.js": 4,
  		"./WorkerHandler": 5,
  		"./WorkerHandler.js": 5,
  		"./debug-port-allocator": 8,
  		"./debug-port-allocator.js": 8,
  		"./environment": 1,
  		"./environment.js": 1,
  		"./generated/embeddedWorker": 9,
  		"./generated/embeddedWorker.js": 9,
  		"./header": 10,
  		"./header.js": 10,
  		"./worker": 11,
  		"./worker.js": 11
  	};
  	function webpackContext(req) {
  		return __webpack_require__(webpackContextResolve(req));
  	};
  	function webpackContextResolve(req) {
  		return map[req] || (function() { throw new Error("Cannot find module '" + req + "'.") }());
  	};
  	webpackContext.keys = function webpackContextKeys() {
  		return Object.keys(map);
  	};
  	webpackContext.resolve = webpackContextResolve;
  	module.exports = webpackContext;
  	webpackContext.id = 7;
  
  
  /***/ }),
  /* 8 */
  /***/ (function(module, exports) {
  
  	'use strict';
  
  	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--;
  	};
  
  
  
  /***/ }),
  /* 9 */
  /***/ (function(module, exports) {
  
  	/**
  	 * 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(r){function e(n){if(o[n])return o[n].exports;var t=o[n]={exports:{},id:n,loaded:!1};return r[n].call(t.exports,t,t.exports,e),t.loaded=!0,t.exports}var o={};e.m=r,e.c=o,e.p=\"\",e(0)}([function(module,exports,__webpack_require__){function convertError(r){return Object.getOwnPropertyNames(r).reduce(function(e,o){return Object.defineProperty(e,o,{value:r[o],enumerable:!0})},{})}function isPromise(r){return r&&\"function\"==typeof r.then&&\"function\"==typeof r.catch}var worker={};if(\"undefined\"!=typeof self&&\"function\"==typeof postMessage&&\"function\"==typeof addEventListener)worker.on=function(r,e){addEventListener(r,function(r){e(r.data)})},worker.send=function(r){postMessage(r)};else{if(\"undefined\"==typeof process)throw new Error(\"Script must be executed as a worker\");var WorkerThreads;try{WorkerThreads=__webpack_require__(!function(){var r=new Error('Cannot find module \"worker_threads\"');throw r.code=\"MODULE_NOT_FOUND\",r}())}catch(r){if(\"object\"!=typeof r||null===r||\"MODULE_NOT_FOUND\"!=r.code)throw r}if(WorkerThreads&&null!==WorkerThreads.parentPort){var parentPort=WorkerThreads.parentPort;worker.send=parentPort.postMessage.bind(parentPort),worker.on=parentPort.on.bind(parentPort)}else worker.on=process.on.bind(process),worker.send=process.send.bind(process)}worker.methods={},worker.methods.run=function run(fn,args){var f=eval(\"(\"+fn+\")\");return f.apply(f,args)},worker.methods.methods=function(){return Object.keys(worker.methods)},worker.on(\"message\",function(r){try{var e=worker.methods[r.method];if(!e)throw new Error('Unknown method \"'+r.method+'\"');var o=e.apply(e,r.params);isPromise(o)?o.then(function(e){worker.send({id:r.id,result:e,error:null})}).catch(function(e){worker.send({id:r.id,result:null,error:convertError(e)})}):worker.send({id:r.id,result:o,error:null})}catch(e){worker.send({id:r.id,result:null,error:convertError(e)})}}),worker.register=function(r){if(r)for(var e in r)r.hasOwnProperty(e)&&(worker.methods[e]=r[e]);worker.send(\"ready\")},exports.add=worker.register}]);";
  
  
  /***/ }),
  /* 10 */
  /***/ (function(module, exports) {
  
  	/**
  	 * workerpool.js
  	 * https://github.com/josdejong/workerpool
  	 *
  	 * Offload tasks to a pool of workers on node.js and in the browser.
  	 *
  	 * @version @@version
  	 * @date    @@date
  	 *
  	 * @license
  	 * Copyright (C) 2014-2016 Jos de Jong <wjosdejong@gmail.com>
  	 *
  	 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  	 * use this file except in compliance with the License. You may obtain a copy
  	 * of the License at
  	 *
  	 * http://www.apache.org/licenses/LICENSE-2.0
  	 *
  	 * Unless required by applicable law or agreed to in writing, software
  	 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  	 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  	 * License for the specific language governing permissions and limitations under
  	 * the License.
  	 */
  
  
  /***/ }),
  /* 11 */
  /***/ (function(module, exports, __webpack_require__) {
  
  	/**
  	 * worker must be started as a child process or a web worker.
  	 * It listens for RPC messages from the parent process.
  	 */
  
  	// create a worker API for sending and receiving messages which works both on
  	// node.js and in the browser
  	var worker = {};
  	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 = __webpack_require__(12);
  	  } 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);
  	  } else {
  	    worker.on = process.on.bind(process);
  	    worker.send = process.send.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');
  	}
  
  	// 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 = eval('(' + fn + ')');
  	  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);
  	};
  
  	worker.on('message', function (request) {
  	  try {
  	    var method = worker.methods[request.method];
  
  	    if (method) {
  	      // execute the function
  	      var result = method.apply(method, request.params);
  
  	      if (isPromise(result)) {
  	        // promise returned, resolve this and then return
  	        result
  	            .then(function (result) {
  	              worker.send({
  	                id: request.id,
  	                result: result,
  	                error: null
  	              });
  	            })
  	            .catch(function (err) {
  	              worker.send({
  	                id: request.id,
  	                result: null,
  	                error: convertError(err)
  	              });
  	            });
  	      }
  	      else {
  	        // immediate result
  	        worker.send({
  	          id: request.id,
  	          result: result,
  	          error: 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
  	 */
  	worker.register = function (methods) {
  
  	  if (methods) {
  	    for (var name in methods) {
  	      if (methods.hasOwnProperty(name)) {
  	        worker.methods[name] = methods[name];
  	      }
  	    }
  	  }
  
  	  worker.send('ready');
  
  	};
  
  	if (true) {
  	  exports.add = worker.register;
  	}
  
  
  /***/ }),
  /* 12 */
  /***/ (function(module, exports) {
  
  	module.exports = require("worker_threads");
  
  /***/ }),
  /* 13 */
  /***/ (function(module, exports) {
  
  	module.exports = require("child_process");
  
  /***/ })
  /******/ ])
  });
  ;