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nedux

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the next redux state management

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(function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : typeof define === 'function' && define.amd ? define(['exports'], factory) : (global = global || self, factory(global.Nedux = {})); }(this, (function (exports) { 'use strict'; function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; } function _objectSpread2(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; } /*! ***************************************************************************** Copyright (c) Microsoft Corporation. All rights reserved. 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 THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT. See the Apache Version 2.0 License for specific language governing permissions and limitations under the License. ***************************************************************************** */ /* global Reflect, Promise */ var extendStatics = function(d, b) { extendStatics = Object.setPrototypeOf || ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; return extendStatics(d, b); }; function __extends(d, b) { extendStatics(d, b); function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); } /** PURE_IMPORTS_START PURE_IMPORTS_END */ function isFunction(x) { return typeof x === 'function'; } /** PURE_IMPORTS_START PURE_IMPORTS_END */ var _enable_super_gross_mode_that_will_cause_bad_things = false; var config = { Promise: undefined, set useDeprecatedSynchronousErrorHandling(value) { if (value) { var error = /*@__PURE__*/ new Error(); /*@__PURE__*/ console.warn('DEPRECATED! RxJS was set to use deprecated synchronous error handling behavior by code at: \n' + error.stack); } _enable_super_gross_mode_that_will_cause_bad_things = value; }, get useDeprecatedSynchronousErrorHandling() { return _enable_super_gross_mode_that_will_cause_bad_things; }, }; /** PURE_IMPORTS_START PURE_IMPORTS_END */ function hostReportError(err) { setTimeout(function () { throw err; }, 0); } /** PURE_IMPORTS_START _config,_util_hostReportError PURE_IMPORTS_END */ var empty = { closed: true, next: function (value) { }, error: function (err) { if (config.useDeprecatedSynchronousErrorHandling) { throw err; } else { hostReportError(err); } }, complete: function () { } }; /** PURE_IMPORTS_START PURE_IMPORTS_END */ var isArray = /*@__PURE__*/ (function () { return Array.isArray || (function (x) { return x && typeof x.length === 'number'; }); })(); /** PURE_IMPORTS_START PURE_IMPORTS_END */ function isObject(x) { return x !== null && typeof x === 'object'; } /** PURE_IMPORTS_START PURE_IMPORTS_END */ var UnsubscriptionErrorImpl = /*@__PURE__*/ (function () { function UnsubscriptionErrorImpl(errors) { Error.call(this); this.message = errors ? errors.length + " errors occurred during unsubscription:\n" + errors.map(function (err, i) { return i + 1 + ") " + err.toString(); }).join('\n ') : ''; this.name = 'UnsubscriptionError'; this.errors = errors; return this; } UnsubscriptionErrorImpl.prototype = /*@__PURE__*/ Object.create(Error.prototype); return UnsubscriptionErrorImpl; })(); var UnsubscriptionError = UnsubscriptionErrorImpl; /** PURE_IMPORTS_START _util_isArray,_util_isObject,_util_isFunction,_util_UnsubscriptionError PURE_IMPORTS_END */ var Subscription = /*@__PURE__*/ (function () { function Subscription(unsubscribe) { this.closed = false; this._parentOrParents = null; this._subscriptions = null; if (unsubscribe) { this._unsubscribe = unsubscribe; } } Subscription.prototype.unsubscribe = function () { var errors; if (this.closed) { return; } var _a = this, _parentOrParents = _a._parentOrParents, _unsubscribe = _a._unsubscribe, _subscriptions = _a._subscriptions; this.closed = true; this._parentOrParents = null; this._subscriptions = null; if (_parentOrParents instanceof Subscription) { _parentOrParents.remove(this); } else if (_parentOrParents !== null) { for (var index = 0; index < _parentOrParents.length; ++index) { var parent_1 = _parentOrParents[index]; parent_1.remove(this); } } if (isFunction(_unsubscribe)) { try { _unsubscribe.call(this); } catch (e) { errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e]; } } if (isArray(_subscriptions)) { var index = -1; var len = _subscriptions.length; while (++index < len) { var sub = _subscriptions[index]; if (isObject(sub)) { try { sub.unsubscribe(); } catch (e) { errors = errors || []; if (e instanceof UnsubscriptionError) { errors = errors.concat(flattenUnsubscriptionErrors(e.errors)); } else { errors.push(e); } } } } } if (errors) { throw new UnsubscriptionError(errors); } }; Subscription.prototype.add = function (teardown) { var subscription = teardown; if (!teardown) { return Subscription.EMPTY; } switch (typeof teardown) { case 'function': subscription = new Subscription(teardown); case 'object': if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') { return subscription; } else if (this.closed) { subscription.unsubscribe(); return subscription; } else if (!(subscription instanceof Subscription)) { var tmp = subscription; subscription = new Subscription(); subscription._subscriptions = [tmp]; } break; default: { throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.'); } } var _parentOrParents = subscription._parentOrParents; if (_parentOrParents === null) { subscription._parentOrParents = this; } else if (_parentOrParents instanceof Subscription) { if (_parentOrParents === this) { return subscription; } subscription._parentOrParents = [_parentOrParents, this]; } else if (_parentOrParents.indexOf(this) === -1) { _parentOrParents.push(this); } else { return subscription; } var subscriptions = this._subscriptions; if (subscriptions === null) { this._subscriptions = [subscription]; } else { subscriptions.push(subscription); } return subscription; }; Subscription.prototype.remove = function (subscription) { var subscriptions = this._subscriptions; if (subscriptions) { var subscriptionIndex = subscriptions.indexOf(subscription); if (subscriptionIndex !== -1) { subscriptions.splice(subscriptionIndex, 1); } } }; Subscription.EMPTY = (function (empty) { empty.closed = true; return empty; }(new Subscription())); return Subscription; }()); function flattenUnsubscriptionErrors(errors) { return errors.reduce(function (errs, err) { return errs.concat((err instanceof UnsubscriptionError) ? err.errors : err); }, []); } /** PURE_IMPORTS_START PURE_IMPORTS_END */ var rxSubscriber = /*@__PURE__*/ (function () { return typeof Symbol === 'function' ? /*@__PURE__*/ Symbol('rxSubscriber') : '@@rxSubscriber_' + /*@__PURE__*/ Math.random(); })(); /** PURE_IMPORTS_START tslib,_util_isFunction,_Observer,_Subscription,_internal_symbol_rxSubscriber,_config,_util_hostReportError PURE_IMPORTS_END */ var Subscriber = /*@__PURE__*/ (function (_super) { __extends(Subscriber, _super); function Subscriber(destinationOrNext, error, complete) { var _this = _super.call(this) || this; _this.syncErrorValue = null; _this.syncErrorThrown = false; _this.syncErrorThrowable = false; _this.isStopped = false; switch (arguments.length) { case 0: _this.destination = empty; break; case 1: if (!destinationOrNext) { _this.destination = empty; break; } if (typeof destinationOrNext === 'object') { if (destinationOrNext instanceof Subscriber) { _this.syncErrorThrowable = destinationOrNext.syncErrorThrowable; _this.destination = destinationOrNext; destinationOrNext.add(_this); } else { _this.syncErrorThrowable = true; _this.destination = new SafeSubscriber(_this, destinationOrNext); } break; } default: _this.syncErrorThrowable = true; _this.destination = new SafeSubscriber(_this, destinationOrNext, error, complete); break; } return _this; } Subscriber.prototype[rxSubscriber] = function () { return this; }; Subscriber.create = function (next, error, complete) { var subscriber = new Subscriber(next, error, complete); subscriber.syncErrorThrowable = false; return subscriber; }; Subscriber.prototype.next = function (value) { if (!this.isStopped) { this._next(value); } }; Subscriber.prototype.error = function (err) { if (!this.isStopped) { this.isStopped = true; this._error(err); } }; Subscriber.prototype.complete = function () { if (!this.isStopped) { this.isStopped = true; this._complete(); } }; Subscriber.prototype.unsubscribe = function () { if (this.closed) { return; } this.isStopped = true; _super.prototype.unsubscribe.call(this); }; Subscriber.prototype._next = function (value) { this.destination.next(value); }; Subscriber.prototype._error = function (err) { this.destination.error(err); this.unsubscribe(); }; Subscriber.prototype._complete = function () { this.destination.complete(); this.unsubscribe(); }; Subscriber.prototype._unsubscribeAndRecycle = function () { var _parentOrParents = this._parentOrParents; this._parentOrParents = null; this.unsubscribe(); this.closed = false; this.isStopped = false; this._parentOrParents = _parentOrParents; return this; }; return Subscriber; }(Subscription)); var SafeSubscriber = /*@__PURE__*/ (function (_super) { __extends(SafeSubscriber, _super); function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) { var _this = _super.call(this) || this; _this._parentSubscriber = _parentSubscriber; var next; var context = _this; if (isFunction(observerOrNext)) { next = observerOrNext; } else if (observerOrNext) { next = observerOrNext.next; error = observerOrNext.error; complete = observerOrNext.complete; if (observerOrNext !== empty) { context = Object.create(observerOrNext); if (isFunction(context.unsubscribe)) { _this.add(context.unsubscribe.bind(context)); } context.unsubscribe = _this.unsubscribe.bind(_this); } } _this._context = context; _this._next = next; _this._error = error; _this._complete = complete; return _this; } SafeSubscriber.prototype.next = function (value) { if (!this.isStopped && this._next) { var _parentSubscriber = this._parentSubscriber; if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) { this.__tryOrUnsub(this._next, value); } else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) { this.unsubscribe(); } } }; SafeSubscriber.prototype.error = function (err) { if (!this.isStopped) { var _parentSubscriber = this._parentSubscriber; var useDeprecatedSynchronousErrorHandling = config.useDeprecatedSynchronousErrorHandling; if (this._error) { if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) { this.__tryOrUnsub(this._error, err); this.unsubscribe(); } else { this.__tryOrSetError(_parentSubscriber, this._error, err); this.unsubscribe(); } } else if (!_parentSubscriber.syncErrorThrowable) { this.unsubscribe(); if (useDeprecatedSynchronousErrorHandling) { throw err; } hostReportError(err); } else { if (useDeprecatedSynchronousErrorHandling) { _parentSubscriber.syncErrorValue = err; _parentSubscriber.syncErrorThrown = true; } else { hostReportError(err); } this.unsubscribe(); } } }; SafeSubscriber.prototype.complete = function () { var _this = this; if (!this.isStopped) { var _parentSubscriber = this._parentSubscriber; if (this._complete) { var wrappedComplete = function () { return _this._complete.call(_this._context); }; if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) { this.__tryOrUnsub(wrappedComplete); this.unsubscribe(); } else { this.__tryOrSetError(_parentSubscriber, wrappedComplete); this.unsubscribe(); } } else { this.unsubscribe(); } } }; SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) { try { fn.call(this._context, value); } catch (err) { this.unsubscribe(); if (config.useDeprecatedSynchronousErrorHandling) { throw err; } else { hostReportError(err); } } }; SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) { if (!config.useDeprecatedSynchronousErrorHandling) { throw new Error('bad call'); } try { fn.call(this._context, value); } catch (err) { if (config.useDeprecatedSynchronousErrorHandling) { parent.syncErrorValue = err; parent.syncErrorThrown = true; return true; } else { hostReportError(err); return true; } } return false; }; SafeSubscriber.prototype._unsubscribe = function () { var _parentSubscriber = this._parentSubscriber; this._context = null; this._parentSubscriber = null; _parentSubscriber.unsubscribe(); }; return SafeSubscriber; }(Subscriber)); /** PURE_IMPORTS_START _Subscriber PURE_IMPORTS_END */ function canReportError(observer) { while (observer) { var _a = observer, closed_1 = _a.closed, destination = _a.destination, isStopped = _a.isStopped; if (closed_1 || isStopped) { return false; } else if (destination && destination instanceof Subscriber) { observer = destination; } else { observer = null; } } return true; } /** PURE_IMPORTS_START _Subscriber,_symbol_rxSubscriber,_Observer PURE_IMPORTS_END */ function toSubscriber(nextOrObserver, error, complete) { if (nextOrObserver) { if (nextOrObserver instanceof Subscriber) { return nextOrObserver; } if (nextOrObserver[rxSubscriber]) { return nextOrObserver[rxSubscriber](); } } if (!nextOrObserver && !error && !complete) { return new Subscriber(empty); } return new Subscriber(nextOrObserver, error, complete); } /** PURE_IMPORTS_START PURE_IMPORTS_END */ var observable = /*@__PURE__*/ (function () { return typeof Symbol === 'function' && Symbol.observable || '@@observable'; })(); /** PURE_IMPORTS_START PURE_IMPORTS_END */ function noop() { } /** PURE_IMPORTS_START _noop PURE_IMPORTS_END */ function pipeFromArray(fns) { if (!fns) { return noop; } if (fns.length === 1) { return fns[0]; } return function piped(input) { return fns.reduce(function (prev, fn) { return fn(prev); }, input); }; } /** PURE_IMPORTS_START _util_canReportError,_util_toSubscriber,_symbol_observable,_util_pipe,_config PURE_IMPORTS_END */ var Observable = /*@__PURE__*/ (function () { function Observable(subscribe) { this._isScalar = false; if (subscribe) { this._subscribe = subscribe; } } Observable.prototype.lift = function (operator) { var observable = new Observable(); observable.source = this; observable.operator = operator; return observable; }; Observable.prototype.subscribe = function (observerOrNext, error, complete) { var operator = this.operator; var sink = toSubscriber(observerOrNext, error, complete); if (operator) { sink.add(operator.call(sink, this.source)); } else { sink.add(this.source || (config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable) ? this._subscribe(sink) : this._trySubscribe(sink)); } if (config.useDeprecatedSynchronousErrorHandling) { if (sink.syncErrorThrowable) { sink.syncErrorThrowable = false; if (sink.syncErrorThrown) { throw sink.syncErrorValue; } } } return sink; }; Observable.prototype._trySubscribe = function (sink) { try { return this._subscribe(sink); } catch (err) { if (config.useDeprecatedSynchronousErrorHandling) { sink.syncErrorThrown = true; sink.syncErrorValue = err; } if (canReportError(sink)) { sink.error(err); } else { console.warn(err); } } }; Observable.prototype.forEach = function (next, promiseCtor) { var _this = this; promiseCtor = getPromiseCtor(promiseCtor); return new promiseCtor(function (resolve, reject) { var subscription; subscription = _this.subscribe(function (value) { try { next(value); } catch (err) { reject(err); if (subscription) { subscription.unsubscribe(); } } }, reject, resolve); }); }; Observable.prototype._subscribe = function (subscriber) { var source = this.source; return source && source.subscribe(subscriber); }; Observable.prototype[observable] = function () { return this; }; Observable.prototype.pipe = function () { var operations = []; for (var _i = 0; _i < arguments.length; _i++) { operations[_i] = arguments[_i]; } if (operations.length === 0) { return this; } return pipeFromArray(operations)(this); }; Observable.prototype.toPromise = function (promiseCtor) { var _this = this; promiseCtor = getPromiseCtor(promiseCtor); return new promiseCtor(function (resolve, reject) { var value; _this.subscribe(function (x) { return value = x; }, function (err) { return reject(err); }, function () { return resolve(value); }); }); }; Observable.create = function (subscribe) { return new Observable(subscribe); }; return Observable; }()); function getPromiseCtor(promiseCtor) { if (!promiseCtor) { promiseCtor = Promise; } if (!promiseCtor) { throw new Error('no Promise impl found'); } return promiseCtor; } /** PURE_IMPORTS_START PURE_IMPORTS_END */ var ObjectUnsubscribedErrorImpl = /*@__PURE__*/ (function () { function ObjectUnsubscribedErrorImpl() { Error.call(this); this.message = 'object unsubscribed'; this.name = 'ObjectUnsubscribedError'; return this; } ObjectUnsubscribedErrorImpl.prototype = /*@__PURE__*/ Object.create(Error.prototype); return ObjectUnsubscribedErrorImpl; })(); var ObjectUnsubscribedError = ObjectUnsubscribedErrorImpl; /** PURE_IMPORTS_START tslib,_Subscription PURE_IMPORTS_END */ var SubjectSubscription = /*@__PURE__*/ (function (_super) { __extends(SubjectSubscription, _super); function SubjectSubscription(subject, subscriber) { var _this = _super.call(this) || this; _this.subject = subject; _this.subscriber = subscriber; _this.closed = false; return _this; } SubjectSubscription.prototype.unsubscribe = function () { if (this.closed) { return; } this.closed = true; var subject = this.subject; var observers = subject.observers; this.subject = null; if (!observers || observers.length === 0 || subject.isStopped || subject.closed) { return; } var subscriberIndex = observers.indexOf(this.subscriber); if (subscriberIndex !== -1) { observers.splice(subscriberIndex, 1); } }; return SubjectSubscription; }(Subscription)); /** PURE_IMPORTS_START tslib,_Observable,_Subscriber,_Subscription,_util_ObjectUnsubscribedError,_SubjectSubscription,_internal_symbol_rxSubscriber PURE_IMPORTS_END */ var SubjectSubscriber = /*@__PURE__*/ (function (_super) { __extends(SubjectSubscriber, _super); function SubjectSubscriber(destination) { var _this = _super.call(this, destination) || this; _this.destination = destination; return _this; } return SubjectSubscriber; }(Subscriber)); var Subject = /*@__PURE__*/ (function (_super) { __extends(Subject, _super); function Subject() { var _this = _super.call(this) || this; _this.observers = []; _this.closed = false; _this.isStopped = false; _this.hasError = false; _this.thrownError = null; return _this; } Subject.prototype[rxSubscriber] = function () { return new SubjectSubscriber(this); }; Subject.prototype.lift = function (operator) { var subject = new AnonymousSubject(this, this); subject.operator = operator; return subject; }; Subject.prototype.next = function (value) { if (this.closed) { throw new ObjectUnsubscribedError(); } if (!this.isStopped) { var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i < len; i++) { copy[i].next(value); } } }; Subject.prototype.error = function (err) { if (this.closed) { throw new ObjectUnsubscribedError(); } this.hasError = true; this.thrownError = err; this.isStopped = true; var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i < len; i++) { copy[i].error(err); } this.observers.length = 0; }; Subject.prototype.complete = function () { if (this.closed) { throw new ObjectUnsubscribedError(); } this.isStopped = true; var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i < len; i++) { copy[i].complete(); } this.observers.length = 0; }; Subject.prototype.unsubscribe = function () { this.isStopped = true; this.closed = true; this.observers = null; }; Subject.prototype._trySubscribe = function (subscriber) { if (this.closed) { throw new ObjectUnsubscribedError(); } else { return _super.prototype._trySubscribe.call(this, subscriber); } }; Subject.prototype._subscribe = function (subscriber) { if (this.closed) { throw new ObjectUnsubscribedError(); } else if (this.hasError) { subscriber.error(this.thrownError); return Subscription.EMPTY; } else if (this.isStopped) { subscriber.complete(); return Subscription.EMPTY; } else { this.observers.push(subscriber); return new SubjectSubscription(this, subscriber); } }; Subject.prototype.asObservable = function () { var observable = new Observable(); observable.source = this; return observable; }; Subject.create = function (destination, source) { return new AnonymousSubject(destination, source); }; return Subject; }(Observable)); var AnonymousSubject = /*@__PURE__*/ (function (_super) { __extends(AnonymousSubject, _super); function AnonymousSubject(destination, source) { var _this = _super.call(this) || this; _this.destination = destination; _this.source = source; return _this; } AnonymousSubject.prototype.next = function (value) { var destination = this.destination; if (destination && destination.next) { destination.next(value); } }; AnonymousSubject.prototype.error = function (err) { var destination = this.destination; if (destination && destination.error) { this.destination.error(err); } }; AnonymousSubject.prototype.complete = function () { var destination = this.destination; if (destination && destination.complete) { this.destination.complete(); } }; AnonymousSubject.prototype._subscribe = function (subscriber) { var source = this.source; if (source) { return this.source.subscribe(subscriber); } else { return Subscription.EMPTY; } }; return AnonymousSubject; }(Subject)); /** PURE_IMPORTS_START tslib,_Subject,_util_ObjectUnsubscribedError PURE_IMPORTS_END */ var BehaviorSubject = /*@__PURE__*/ (function (_super) { __extends(BehaviorSubject, _super); function BehaviorSubject(_value) { var _this = _super.call(this) || this; _this._value = _value; return _this; } Object.defineProperty(BehaviorSubject.prototype, "value", { get: function () { return this.getValue(); }, enumerable: true, configurable: true }); BehaviorSubject.prototype._subscribe = function (subscriber) { var subscription = _super.prototype._subscribe.call(this, subscriber); if (subscription && !subscription.closed) { subscriber.next(this._value); } return subscription; }; BehaviorSubject.prototype.getValue = function () { if (this.hasError) { throw this.thrownError; } else if (this.closed) { throw new ObjectUnsubscribedError(); } else { return this._value; } }; BehaviorSubject.prototype.next = function (value) { _super.prototype.next.call(this, this._value = value); }; return BehaviorSubject; }(Subject)); var createStore = function createStore(initState, middleware) { if (middleware === void 0) { middleware = []; } // Map each `initState` entries to a BehaviorSubject var subjects = Object.keys(initState).reduce(function (acc, key) { var _objectSpread2$1; var defaultValue = initState[key]; var subject = new BehaviorSubject(defaultValue); return _objectSpread2({}, acc, (_objectSpread2$1 = {}, _objectSpread2$1[key] = subject, _objectSpread2$1)); }, {}); /** * Get the stored value at the key * @param key target key */ var get = function get(key) { return subjects[key].getValue(); }; /** * Set a new value of the property `key` of the store * @param key target key * @param value new value */ var set = function set(key, value) { subjects[key].next(typeof value === 'function' ? value(get(key)) : value); }; // @todo conditional typing return /** * Subscribe to a key of the store * @param key target key you want to subscribe * @param observer observer that will be called each time the value of key has changed */ var subscribe = function subscribe(key, observer, _temp) { var _ref = _temp === void 0 ? {} : _temp, _ref$withInitialValue = _ref.withInitialValue, withInitialValue = _ref$withInitialValue === void 0 ? false : _ref$withInitialValue; var hasBeenInitialized = false; var validObserverFactory = function validObserverFactory(k) { return typeof observer === 'function' ? { next: function next(value) { return observer(value, k); } } : observer; }; var wrappedObserverFactory = function wrappedObserverFactory(k) { var validObserver = validObserverFactory(k); return _objectSpread2({}, validObserver, { next: withInitialValue ? validObserver.next : function (nextValue) { if (hasBeenInitialized) { validObserver.next && validObserver.next(nextValue); } else { hasBeenInitialized = true; } } }); }; return key === '' ? Object.keys(subjects).map(function (key) { return subjects[key].subscribe(wrappedObserverFactory(key)); }) : subjects[key].subscribe(wrappedObserverFactory(key)); }; // Create the store var store = { get: get, set: set, subscribe: subscribe }; // Initialize all middleware middleware.forEach(function (factory) { return factory(store); }); return store; }; exports.createStore = createStore; Object.defineProperty(exports, '__esModule', { value: true }); })));