dist/js/npm.ampersand-state.chunk.d87280151d6296d77d24.js
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(window.webpackJsonp=window.webpackJsonp||[]).push([["npm.ampersand-state"],{ef45:function(module,exports,__webpack_require__){"use strict";eval("\n/*$AMPERSAND_VERSION*/\nvar uniqueId = __webpack_require__(/*! lodash/uniqueId */ \"6d0d\");\nvar assign = __webpack_require__(/*! lodash/assign */ \"5ad5\");\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = __webpack_require__(/*! lodash/omit */ \"4633\");\nvar escape = __webpack_require__(/*! lodash/escape */ \"740c\");\nvar forOwn = __webpack_require__(/*! lodash/forOwn */ \"436f\");\nvar includes = __webpack_require__(/*! lodash/includes */ \"e2c7\");\nvar isString = __webpack_require__(/*! lodash/isString */ \"5fa3\");\nvar isObject = __webpack_require__(/*! lodash/isObject */ \"d3a8\");\nvar isDate = __webpack_require__(/*! lodash/isDate */ \"7f93\");\nvar isFunction = __webpack_require__(/*! lodash/isFunction */ \"f3b0\");\nvar _isEqual = __webpack_require__(/*! lodash/isEqual */ \"f8a3\"); // to avoid shadowing\nvar has = __webpack_require__(/*! lodash/has */ \"b055\");\nvar result = __webpack_require__(/*! lodash/result */ \"80c9\");\nvar union = __webpack_require__(/*! lodash/union */ \"c80f\");\nvar Events = __webpack_require__(/*! ampersand-events */ \"13c2\");\nvar KeyTree = __webpack_require__(/*! key-tree-store */ \"8849\");\nvar arrayNext = __webpack_require__(/*! array-next */ \"d1bb\");\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n options || (options = {});\n this.cid || (this.cid = uniqueId('state'));\n this._events = {};\n this._values = {};\n this._eventBubblingHandlerCache = {};\n this._definition = Object.create(this._definition);\n if (options.parse) attrs = this.parse(attrs, options);\n this.parent = options.parent;\n this.collection = options.collection;\n this._keyTree = new KeyTree();\n this._initCollections();\n this._initChildren();\n this._cache = {};\n this._previousAttributes = {};\n if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n this._changed = {};\n if (this._derived) this._initDerived();\n if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n // can be allow, ignore, reject\n extraProperties: 'ignore',\n\n idAttribute: 'id',\n\n namespaceAttribute: 'namespace',\n\n typeAttribute: 'modelType',\n\n // Stubbed out to be overwritten\n initialize: function () {\n return this;\n },\n\n // Get ID of model per configuration.\n // Should *always* be how ID is determined by other code.\n getId: function () {\n return this[this.idAttribute];\n },\n\n // Get namespace of model per configuration.\n // Should *always* be how namespace is determined by other code.\n getNamespace: function () {\n return this[this.namespaceAttribute];\n },\n\n // Get type of model per configuration.\n // Should *always* be how type is determined by other code.\n getType: function () {\n return this[this.typeAttribute];\n },\n\n // A model is new if it has never been saved to the server, and lacks an id.\n isNew: function () {\n return this.getId() == null;\n },\n\n // get HTML-escaped value of attribute\n escape: function (attr) {\n return escape(this.get(attr));\n },\n\n // Check if the model is currently in a valid state.\n isValid: function (options) {\n return this._validate({}, assign(options || {}, { validate: true }));\n },\n\n // Parse can be used remap/restructure/rename incoming properties\n // before they are applied to attributes.\n parse: function (resp, options) {\n //jshint unused:false\n return resp;\n },\n\n // Serialize is the inverse of `parse` it lets you massage data\n // on the way out. Before, sending to server, for example.\n serialize: function (options) {\n var attrOpts = assign({props: true}, options);\n var res = this.getAttributes(attrOpts, true);\n \n var setFromSerializedValue = function (value, key) {\n\t res[key] = this[key].serialize();\n }.bind(this);\n \n forOwn(this._children, setFromSerializedValue);\n forOwn(this._collections, setFromSerializedValue);\n return res;\n },\n\n // Main set method used by generated setters/getters and can\n // be used directly if you need to pass options or set multiple\n // properties at once.\n set: function (key, value, options) {\n var self = this;\n var extraProperties = this.extraProperties;\n var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n // Handle both `\"key\", value` and `{key: value}` -style arguments.\n if (isObject(key) || key === null) {\n attrs = key;\n options = value;\n } else {\n attrs = {};\n attrs[key] = value;\n }\n\n options = options || {};\n\n if (!this._validate(attrs, options)) return false;\n\n // Extract attributes and options.\n unset = options.unset;\n silent = options.silent;\n initial = options.initial;\n\n // Initialize change tracking.\n wasChanging = this._changing;\n this._changing = true;\n changeEvents = [];\n\n // if not already changing, store previous\n if (initial) {\n this._previousAttributes = {};\n } else if (!wasChanging) {\n this._previousAttributes = this.attributes;\n this._changed = {};\n }\n\n // For each `set` attribute...\n for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n attr = keys[i];\n newVal = attrs[attr];\n newType = typeof newVal;\n currentVal = this._values[attr];\n def = this._definition[attr];\n\n if (!def) {\n // if this is a child model or collection\n if (this._children[attr] || this._collections[attr]) {\n if (!isObject(newVal)) {\n newVal = {};\n }\n\n this[attr].set(newVal, options);\n continue;\n } else if (extraProperties === 'ignore') {\n continue;\n } else if (extraProperties === 'reject') {\n throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n } else if (extraProperties === 'allow') {\n def = this._createPropertyDefinition(attr, 'any');\n } else if (extraProperties) {\n throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n }\n }\n\n isEqual = this._getCompareForType(def.type);\n onChange = this._getOnChangeForType(def.type);\n dataType = this._dataTypes[def.type];\n\n // check type if we have one\n if (dataType && dataType.set) {\n cast = dataType.set(newVal);\n newVal = cast.val;\n newType = cast.type;\n }\n\n // If we've defined a test, run it\n if (def.test) {\n err = def.test.call(this, newVal, newType);\n if (err) {\n throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n }\n }\n\n // If we are required but undefined, throw error.\n // If we are null and are not allowing null, throw error\n // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n if (newVal === undefined && def.required) {\n throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (newVal === null && def.required && !def.allowNull) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n }\n if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (def.values && !includes(def.values, newVal)) {\n var defaultValue = result(def, 'default');\n if (unset && defaultValue !== undefined) {\n newVal = defaultValue;\n } else if (!unset || (unset && newVal !== undefined)) {\n throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n }\n }\n\n // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n // enforce `setOnce` for properties if set\n if (def.setOnce && currentVal !== undefined && hasChanged) {\n throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n }\n\n // set/unset attributes.\n // If this is not the initial set, keep track of changed attributes\n // and push to changeEvents array so we can fire events.\n if (hasChanged) {\n\n // This fires no matter what, even on initial set.\n onChange(newVal, currentVal, attr);\n\n // If this is a change (not an initial set), mark the change.\n // Note it's impossible to unset on the initial set (it will already be unset),\n // so we only include that logic here.\n if (!initial) {\n this._changed[attr] = newVal;\n this._previousAttributes[attr] = currentVal;\n if (unset) {\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._values[attr];\n }\n if (!silent) {\n changeEvents.push({prev: currentVal, val: newVal, key: attr});\n }\n }\n if (!unset) {\n this._values[attr] = newVal;\n }\n } else {\n // Not changed\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._changed[attr];\n }\n }\n\n // Fire events. This array is not populated if we are told to be silent.\n if (changeEvents.length) this._pending = true;\n changeEvents.forEach(function (change) {\n self.trigger('change:' + change.key, self, change.val, options);\n });\n\n // You might be wondering why there's a `while` loop here. Changes can\n // be recursively nested within `\"change\"` events.\n if (wasChanging) return this;\n while (this._pending) {\n this._pending = false;\n this.trigger('change', this, options);\n }\n this._pending = false;\n this._changing = false;\n return this;\n },\n\n get: function (attr) {\n return this[attr];\n },\n\n // Toggle boolean properties or properties that have a `values`\n // array in its definition.\n toggle: function (property) {\n var def = this._definition[property];\n if (def.type === 'boolean') {\n // if it's a bool, just flip it\n this[property] = !this[property];\n } else if (def && def.values) {\n // If it's a property with an array of values\n // skip to the next one looping back if at end.\n this[property] = arrayNext(def.values, this[property]);\n } else {\n throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n }\n return this;\n },\n\n // Get all of the attributes of the model at the time of the previous\n // `\"change\"` event.\n previousAttributes: function () {\n return cloneObj(this._previousAttributes);\n },\n\n // Determine if the model has changed since the last `\"change\"` event.\n // If you specify an attribute name, determine if that attribute has changed.\n hasChanged: function (attr) {\n if (attr == null) return !!Object.keys(this._changed).length;\n if (has(this._derived, attr)) {\n return this._derived[attr].depList.some(function (dep) {\n return this.hasChanged(dep);\n }, this);\n }\n return has(this._changed, attr);\n },\n\n // Return an object containing all the attributes that have changed, or\n // false if there are no changed attributes. Useful for determining what\n // parts of a view need to be updated and/or what attributes need to be\n // persisted to the server. Unset attributes will be set to undefined.\n // You can also pass an attributes object to diff against the model,\n // determining if there *would be* a change.\n changedAttributes: function (diff) {\n if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n var val, changed = false;\n var old = this._changing ? this._previousAttributes : this.attributes;\n var def, isEqual;\n for (var attr in diff) {\n def = this._definition[attr];\n if (!def) continue;\n isEqual = this._getCompareForType(def.type);\n if (isEqual(old[attr], (val = diff[attr]))) continue;\n (changed || (changed = {}))[attr] = val;\n }\n return changed;\n },\n\n toJSON: function () {\n return this.serialize();\n },\n\n unset: function (attrs, options) {\n var self = this;\n attrs = Array.isArray(attrs) ? attrs : [attrs];\n attrs.forEach(function (key) {\n var def = self._definition[key];\n if (!def) return;\n var val;\n if (def.required) {\n val = result(def, 'default');\n return self.set(key, val, options);\n } else {\n return self.set(key, val, assign({}, options, {unset: true}));\n }\n });\n },\n\n clear: function (options) {\n var self = this;\n Object.keys(this.attributes).forEach(function (key) {\n self.unset(key, options);\n });\n return this;\n },\n\n previous: function (attr) {\n if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n return this._previousAttributes[attr];\n },\n\n // Get default values for a certain type\n _getDefaultForType: function (type) {\n var dataType = this._dataTypes[type];\n return dataType && dataType['default'];\n },\n\n // Determine which comparison algorithm to use for comparing a property\n _getCompareForType: function (type) {\n var dataType = this._dataTypes[type];\n if (dataType && dataType.compare) return dataType.compare.bind(this);\n return _isEqual; // if no compare function is defined, use _.isEqual\n },\n\n _getOnChangeForType : function(type){\n var dataType = this._dataTypes[type];\n if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n return noop;\n },\n\n // Run validation against the next complete set of model attributes,\n // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n _validate: function (attrs, options) {\n if (!options.validate || !this.validate) return true;\n attrs = assign({}, this.attributes, attrs);\n var error = this.validationError = this.validate(attrs, options) || null;\n if (!error) return true;\n this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n return false;\n },\n\n _createPropertyDefinition: function (name, desc, isSession) {\n return createPropertyDefinition(this, name, desc, isSession);\n },\n\n // just makes friendlier errors when trying to define a new model\n // only used when setting up original property definitions\n _ensureValidType: function (type) {\n return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n },\n\n getAttributes: function (options, raw) {\n options = assign({\n session: false,\n props: false,\n derived: false\n }, options || {});\n var res = {};\n var val, def;\n for (var item in this._definition) {\n def = this._definition[item];\n if ((options.session && def.session) || (options.props && !def.session)) {\n val = raw ? this._values[item] : this[item];\n if (raw && val && isFunction(val.serialize)) val = val.serialize();\n if (typeof val === 'undefined') val = result(def, 'default');\n if (typeof val !== 'undefined') res[item] = val;\n }\n }\n if (options.derived) {\n for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n }\n return res;\n },\n\n _initDerived: function () {\n var self = this;\n\n forOwn(this._derived, function (value, name) {\n var def = self._derived[name];\n def.deps = def.depList;\n\n var update = function () {\n var newVal = def.fn.call(self);\n\n if (self._cache[name] !== newVal || !def.cache) {\n if (def.cache) {\n self._previousAttributes[name] = self._cache[name];\n }\n self._cache[name] = newVal;\n self.trigger('change:' + name, self, self._cache[name]);\n }\n };\n\n def.deps.forEach(function (propString) {\n self._keyTree.add(propString, update);\n });\n });\n\n this.on('all', function (eventName) {\n if (changeRE.test(eventName)) {\n self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n fn();\n });\n }\n }, this);\n },\n\n _getDerivedProperty: function (name, flushCache) {\n // is this a derived property that is cached\n if (this._derived[name].cache) {\n //set if this is the first time, or flushCache is set\n if (flushCache || !this._cache.hasOwnProperty(name)) {\n this._cache[name] = this._derived[name].fn.apply(this);\n }\n return this._cache[name];\n } else {\n return this._derived[name].fn.apply(this);\n }\n },\n\n _initCollections: function () {\n var coll;\n if (!this._collections) return;\n for (coll in this._collections) {\n this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n }\n },\n\n _initChildren: function () {\n var child;\n if (!this._children) return;\n for (child in this._children) {\n this._safeSet(child, new this._children[child]({}, {parent: this}));\n this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n }\n },\n\n // Returns a bound handler for doing event bubbling while\n // adding a name to the change string.\n _getCachedEventBubblingHandler: function (propertyName) {\n if (!this._eventBubblingHandlerCache[propertyName]) {\n this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n if (changeRE.test(name)) {\n this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n } else if (name === 'change') {\n this.trigger('change', this);\n }\n }.bind(this);\n }\n return this._eventBubblingHandlerCache[propertyName];\n },\n\n // Check that all required attributes are present\n _verifyRequired: function () {\n var attrs = this.attributes; // should include session\n for (var def in this._definition) {\n if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n return false;\n }\n }\n return true;\n },\n\n // expose safeSet method\n _safeSet: function safeSet(property, value) {\n if (property in this) {\n throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n }\n this[property] = value;\n return this;\n }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n attributes: {\n get: function () {\n return this.getAttributes({props: true, session: true});\n }\n },\n all: {\n get: function () {\n return this.getAttributes({\n session: true,\n props: true,\n derived: true\n });\n }\n },\n isState: {\n get: function () { return true; },\n set: function () { }\n }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n var def = object._definition[name] = {};\n var type, descArray;\n\n if (isString(desc)) {\n // grab our type if all we've got is a string\n type = object._ensureValidType(desc);\n if (type) def.type = type;\n } else {\n //Transform array of ['type', required, default] to object form\n if (Array.isArray(desc)) {\n descArray = desc;\n desc = {\n type: descArray[0],\n required: descArray[1],\n 'default': descArray[2]\n };\n }\n\n type = object._ensureValidType(desc.type);\n if (type) def.type = type;\n\n if (desc.required) def.required = true;\n\n if (desc['default'] && typeof desc['default'] === 'object') {\n throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n }\n\n def['default'] = desc['default'];\n\n def.allowNull = desc.allowNull ? desc.allowNull : false;\n if (desc.setOnce) def.setOnce = true;\n if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n def.test = desc.test;\n def.values = desc.values;\n }\n if (isSession) def.session = true;\n\n if (!type) {\n type = isString(desc) ? desc : desc.type;\n // TODO: start throwing a TypeError in future major versions instead of warning\n console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n }\n\n // define a getter/setter on the prototype\n // but they get/set on the instance\n Object.defineProperty(object, name, {\n set: function (val) {\n this.set(name, val);\n },\n get: function () {\n if (!this._values) {\n throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n }\n var value = this._values[name];\n var typeDef = this._dataTypes[def.type];\n if (typeof value !== 'undefined') {\n if (typeDef && typeDef.get) {\n value = typeDef.get(value);\n }\n return value;\n }\n var defaultValue = result(def, 'default');\n this._values[name] = defaultValue;\n // If we've set a defaultValue, fire a change handler effectively marking\n // its change from undefined to the default value.\n if (typeof defaultValue !== 'undefined') {\n var onChange = this._getOnChangeForType(def.type);\n onChange(defaultValue, value, name);\n }\n return defaultValue;\n }\n });\n\n return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n var def = modelProto._derived[name] = {\n fn: isFunction(definition) ? definition : definition.fn,\n cache: (definition.cache !== false),\n depList: definition.deps || []\n };\n\n // add to our shared dependency list\n def.depList.forEach(function (dep) {\n modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n });\n\n // defined a top-level getter for derived names\n Object.defineProperty(modelProto, name, {\n get: function () {\n return this._getDerivedProperty(name);\n },\n set: function () {\n throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n }\n });\n}\n\nvar dataTypes = {\n string: {\n 'default': function () {\n return '';\n }\n },\n date: {\n set: function (newVal) {\n var newType;\n if (newVal == null) {\n newType = typeof null;\n } else if (!isDate(newVal)) {\n var err = null;\n var dateVal = new Date(newVal).valueOf();\n if (isNaN(dateVal)) {\n // If the newVal cant be parsed, then try parseInt first\n dateVal = new Date(parseInt(newVal, 10)).valueOf();\n if (isNaN(dateVal)) err = true;\n }\n newVal = dateVal;\n newType = 'date';\n if (err) {\n newType = typeof newVal;\n }\n } else {\n newType = 'date';\n newVal = newVal.valueOf();\n }\n\n return {\n val: newVal,\n type: newType\n };\n },\n get: function (val) {\n if (val == null) { return val; }\n return new Date(val);\n },\n 'default': function () {\n return new Date();\n }\n },\n array: {\n set: function (newVal) {\n return {\n val: newVal,\n type: Array.isArray(newVal) ? 'array' : typeof newVal\n };\n },\n 'default': function () {\n return [];\n }\n },\n object: {\n set: function (newVal) {\n var newType = typeof newVal;\n // we have to have a way of supporting \"missing\" objects.\n // Null is an object, but setting a value to undefined\n // should work too, IMO. We just override it, in that case.\n if (newType !== 'object' && newVal === undefined) {\n newVal = null;\n newType = 'object';\n }\n return {\n val: newVal,\n type: newType\n };\n },\n 'default': function () {\n return {};\n }\n },\n // the `state` data type is a bit special in that setting it should\n // also bubble events\n state: {\n set: function (newVal) {\n var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n if (isInstance) {\n return {\n val: newVal,\n type: 'state'\n };\n } else {\n return {\n val: newVal,\n type: typeof newVal\n };\n }\n },\n compare: function (currentVal, newVal) {\n return currentVal === newVal;\n },\n\n onChange : function(newVal, previousVal, attributeName){\n // if this has changed we want to also handle\n // event propagation\n if (previousVal) {\n this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n\n if (newVal != null) {\n this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n }\n }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n /*jshint validthis:true*/\n var parent = this;\n var child;\n\n // The constructor function for the new subclass is either defined by you\n // (the \"constructor\" property in your `extend` definition), or defaulted\n // by us to simply call the parent's constructor.\n if (protoProps && protoProps.hasOwnProperty('constructor')) {\n child = protoProps.constructor;\n } else {\n child = function () {\n return parent.apply(this, arguments);\n };\n }\n\n // Add static properties to the constructor function from parent\n assign(child, parent);\n\n // Set the prototype chain to inherit from `parent`, without calling\n // `parent`'s constructor function.\n var Surrogate = function () { this.constructor = child; };\n Surrogate.prototype = parent.prototype;\n child.prototype = new Surrogate();\n\n // set prototype level objects\n child.prototype._derived = assign({}, parent.prototype._derived);\n child.prototype._deps = assign({}, parent.prototype._deps);\n child.prototype._definition = assign({}, parent.prototype._definition);\n child.prototype._collections = assign({}, parent.prototype._collections);\n child.prototype._children = assign({}, parent.prototype._children);\n child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n // Mix in all prototype properties to the subclass if supplied.\n if (protoProps) {\n var omitFromExtend = [\n 'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n ];\n for(var i = 0; i < arguments.length; i++) {\n var def = arguments[i];\n if (def.dataTypes) {\n forOwn(def.dataTypes, function (def, name) {\n child.prototype._dataTypes[name] = def;\n });\n }\n if (def.props) {\n forOwn(def.props, function (def, name) {\n createPropertyDefinition(child.prototype, name, def);\n });\n }\n if (def.session) {\n forOwn(def.session, function (def, name) {\n createPropertyDefinition(child.prototype, name, def, true);\n });\n }\n if (def.derived) {\n forOwn(def.derived, function (def, name) {\n createDerivedProperty(child.prototype, name, def);\n });\n }\n if (def.collections) {\n forOwn(def.collections, function (constructor, name) {\n child.prototype._collections[name] = constructor;\n });\n }\n if (def.children) {\n forOwn(def.children, function (constructor, name) {\n child.prototype._children[name] = constructor;\n });\n }\n assign(child.prototype, omit(def, omitFromExtend));\n }\n }\n\n // Set a convenience property in case the parent's prototype is needed\n // later.\n child.__super__ = parent.prototype;\n\n return child;\n}\n\nBase.extend = extend;\n\n// Our main exports\nmodule.exports = Base;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"ef45.js","sources":["webpack:///./node_modules/ampersand-state/ampersand-state.js?63d4"],"sourcesContent":["'use strict';\n/*$AMPERSAND_VERSION*/\nvar uniqueId = require('lodash/uniqueId');\nvar assign = require('lodash/assign');\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = require('lodash/omit');\nvar escape = require('lodash/escape');\nvar forOwn = require('lodash/forOwn');\nvar includes = require('lodash/includes');\nvar isString = require('lodash/isString');\nvar isObject = require('lodash/isObject');\nvar isDate = require('lodash/isDate');\nvar isFunction = require('lodash/isFunction');\nvar _isEqual = require('lodash/isEqual'); // to avoid shadowing\nvar has = require('lodash/has');\nvar result = require('lodash/result');\nvar union = require('lodash/union');\nvar Events = require('ampersand-events');\nvar KeyTree = require('key-tree-store');\nvar arrayNext = require('array-next');\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n    options || (options = {});\n    this.cid || (this.cid = uniqueId('state'));\n    this._events = {};\n    this._values = {};\n    this._eventBubblingHandlerCache = {};\n    this._definition = Object.create(this._definition);\n    if (options.parse) attrs = this.parse(attrs, options);\n    this.parent = options.parent;\n    this.collection = options.collection;\n    this._keyTree = new KeyTree();\n    this._initCollections();\n    this._initChildren();\n    this._cache = {};\n    this._previousAttributes = {};\n    if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n    this._changed = {};\n    if (this._derived) this._initDerived();\n    if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n    // can be allow, ignore, reject\n    extraProperties: 'ignore',\n\n    idAttribute: 'id',\n\n    namespaceAttribute: 'namespace',\n\n    typeAttribute: 'modelType',\n\n    // Stubbed out to be overwritten\n    initialize: function () {\n        return this;\n    },\n\n    // Get ID of model per configuration.\n    // Should *always* be how ID is determined by other code.\n    getId: function () {\n        return this[this.idAttribute];\n    },\n\n    // Get namespace of model per configuration.\n    // Should *always* be how namespace is determined by other code.\n    getNamespace: function () {\n        return this[this.namespaceAttribute];\n    },\n\n    // Get type of model per configuration.\n    // Should *always* be how type is determined by other code.\n    getType: function () {\n        return this[this.typeAttribute];\n    },\n\n    // A model is new if it has never been saved to the server, and lacks an id.\n    isNew: function () {\n        return this.getId() == null;\n    },\n\n    // get HTML-escaped value of attribute\n    escape: function (attr) {\n        return escape(this.get(attr));\n    },\n\n    // Check if the model is currently in a valid state.\n    isValid: function (options) {\n        return this._validate({}, assign(options || {}, { validate: true }));\n    },\n\n    // Parse can be used remap/restructure/rename incoming properties\n    // before they are applied to attributes.\n    parse: function (resp, options) {\n        //jshint unused:false\n        return resp;\n    },\n\n    // Serialize is the inverse of `parse` it lets you massage data\n    // on the way out. Before, sending to server, for example.\n    serialize: function (options) {\n        var attrOpts = assign({props: true}, options);\n        var res = this.getAttributes(attrOpts, true);\n        \n        var setFromSerializedValue = function (value, key) {\n\t        res[key] = this[key].serialize();\n        }.bind(this);\n        \n        forOwn(this._children, setFromSerializedValue);\n        forOwn(this._collections, setFromSerializedValue);\n        return res;\n    },\n\n    // Main set method used by generated setters/getters and can\n    // be used directly if you need to pass options or set multiple\n    // properties at once.\n    set: function (key, value, options) {\n        var self = this;\n        var extraProperties = this.extraProperties;\n        var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n            attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n        // Handle both `\"key\", value` and `{key: value}` -style arguments.\n        if (isObject(key) || key === null) {\n            attrs = key;\n            options = value;\n        } else {\n            attrs = {};\n            attrs[key] = value;\n        }\n\n        options = options || {};\n\n        if (!this._validate(attrs, options)) return false;\n\n        // Extract attributes and options.\n        unset = options.unset;\n        silent = options.silent;\n        initial = options.initial;\n\n        // Initialize change tracking.\n        wasChanging = this._changing;\n        this._changing = true;\n        changeEvents = [];\n\n        // if not already changing, store previous\n        if (initial) {\n            this._previousAttributes = {};\n        } else if (!wasChanging) {\n            this._previousAttributes = this.attributes;\n            this._changed = {};\n        }\n\n        // For each `set` attribute...\n        for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n            attr = keys[i];\n            newVal = attrs[attr];\n            newType = typeof newVal;\n            currentVal = this._values[attr];\n            def = this._definition[attr];\n\n            if (!def) {\n                // if this is a child model or collection\n                if (this._children[attr] || this._collections[attr]) {\n                    if (!isObject(newVal)) {\n                        newVal = {};\n                    }\n\n                    this[attr].set(newVal, options);\n                    continue;\n                } else if (extraProperties === 'ignore') {\n                    continue;\n                } else if (extraProperties === 'reject') {\n                    throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n                } else if (extraProperties === 'allow') {\n                    def = this._createPropertyDefinition(attr, 'any');\n                } else if (extraProperties) {\n                    throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n                }\n            }\n\n            isEqual = this._getCompareForType(def.type);\n            onChange = this._getOnChangeForType(def.type);\n            dataType = this._dataTypes[def.type];\n\n            // check type if we have one\n            if (dataType && dataType.set) {\n                cast = dataType.set(newVal);\n                newVal = cast.val;\n                newType = cast.type;\n            }\n\n            // If we've defined a test, run it\n            if (def.test) {\n                err = def.test.call(this, newVal, newType);\n                if (err) {\n                    throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n                }\n            }\n\n            // If we are required but undefined, throw error.\n            // If we are null and are not allowing null, throw error\n            // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n            // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n            if (newVal === undefined && def.required) {\n                throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (newVal === null && def.required && !def.allowNull) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n            }\n            if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (def.values && !includes(def.values, newVal)) {\n                var defaultValue = result(def, 'default');\n                if (unset && defaultValue !== undefined) {\n                    newVal = defaultValue;\n                } else if (!unset || (unset && newVal !== undefined)) {\n                    throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n                }\n            }\n\n            // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n            hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n            // enforce `setOnce` for properties if set\n            if (def.setOnce && currentVal !== undefined && hasChanged) {\n                throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n            }\n\n            // set/unset attributes.\n            // If this is not the initial set, keep track of changed attributes\n            // and push to changeEvents array so we can fire events.\n            if (hasChanged) {\n\n                // This fires no matter what, even on initial set.\n                onChange(newVal, currentVal, attr);\n\n                // If this is a change (not an initial set), mark the change.\n                // Note it's impossible to unset on the initial set (it will already be unset),\n                // so we only include that logic here.\n                if (!initial) {\n                    this._changed[attr] = newVal;\n                    this._previousAttributes[attr] = currentVal;\n                    if (unset) {\n                        // FIXME delete is very slow. Can we get away with setting to undefined?\n                        delete this._values[attr];\n                    }\n                    if (!silent) {\n                        changeEvents.push({prev: currentVal, val: newVal, key: attr});\n                    }\n                }\n                if (!unset) {\n                    this._values[attr] = newVal;\n                }\n            } else {\n                // Not changed\n                // FIXME delete is very slow. Can we get away with setting to undefined?\n                delete this._changed[attr];\n            }\n        }\n\n        // Fire events. This array is not populated if we are told to be silent.\n        if (changeEvents.length) this._pending = true;\n        changeEvents.forEach(function (change) {\n            self.trigger('change:' + change.key, self, change.val, options);\n        });\n\n        // You might be wondering why there's a `while` loop here. Changes can\n        // be recursively nested within `\"change\"` events.\n        if (wasChanging) return this;\n        while (this._pending) {\n            this._pending = false;\n            this.trigger('change', this, options);\n        }\n        this._pending = false;\n        this._changing = false;\n        return this;\n    },\n\n    get: function (attr) {\n        return this[attr];\n    },\n\n    // Toggle boolean properties or properties that have a `values`\n    // array in its definition.\n    toggle: function (property) {\n        var def = this._definition[property];\n        if (def.type === 'boolean') {\n            // if it's a bool, just flip it\n            this[property] = !this[property];\n        } else if (def && def.values) {\n            // If it's a property with an array of values\n            // skip to the next one looping back if at end.\n            this[property] = arrayNext(def.values, this[property]);\n        } else {\n            throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n        }\n        return this;\n    },\n\n    // Get all of the attributes of the model at the time of the previous\n    // `\"change\"` event.\n    previousAttributes: function () {\n        return cloneObj(this._previousAttributes);\n    },\n\n    // Determine if the model has changed since the last `\"change\"` event.\n    // If you specify an attribute name, determine if that attribute has changed.\n    hasChanged: function (attr) {\n        if (attr == null) return !!Object.keys(this._changed).length;\n        if (has(this._derived, attr)) {\n            return this._derived[attr].depList.some(function (dep) {\n                return this.hasChanged(dep);\n            }, this);\n        }\n        return has(this._changed, attr);\n    },\n\n    // Return an object containing all the attributes that have changed, or\n    // false if there are no changed attributes. Useful for determining what\n    // parts of a view need to be updated and/or what attributes need to be\n    // persisted to the server. Unset attributes will be set to undefined.\n    // You can also pass an attributes object to diff against the model,\n    // determining if there *would be* a change.\n    changedAttributes: function (diff) {\n        if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n        var val, changed = false;\n        var old = this._changing ? this._previousAttributes : this.attributes;\n        var def, isEqual;\n        for (var attr in diff) {\n            def = this._definition[attr];\n            if (!def) continue;\n            isEqual = this._getCompareForType(def.type);\n            if (isEqual(old[attr], (val = diff[attr]))) continue;\n            (changed || (changed = {}))[attr] = val;\n        }\n        return changed;\n    },\n\n    toJSON: function () {\n        return this.serialize();\n    },\n\n    unset: function (attrs, options) {\n        var self = this;\n        attrs = Array.isArray(attrs) ? attrs : [attrs];\n        attrs.forEach(function (key) {\n            var def = self._definition[key];\n            if (!def) return;\n            var val;\n            if (def.required) {\n                val = result(def, 'default');\n                return self.set(key, val, options);\n            } else {\n                return self.set(key, val, assign({}, options, {unset: true}));\n            }\n        });\n    },\n\n    clear: function (options) {\n        var self = this;\n        Object.keys(this.attributes).forEach(function (key) {\n            self.unset(key, options);\n        });\n        return this;\n    },\n\n    previous: function (attr) {\n        if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n        return this._previousAttributes[attr];\n    },\n\n    // Get default values for a certain type\n    _getDefaultForType: function (type) {\n        var dataType = this._dataTypes[type];\n        return dataType && dataType['default'];\n    },\n\n    // Determine which comparison algorithm to use for comparing a property\n    _getCompareForType: function (type) {\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.compare) return dataType.compare.bind(this);\n        return _isEqual; // if no compare function is defined, use _.isEqual\n    },\n\n    _getOnChangeForType : function(type){\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n        return noop;\n    },\n\n    // Run validation against the next complete set of model attributes,\n    // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n    _validate: function (attrs, options) {\n        if (!options.validate || !this.validate) return true;\n        attrs = assign({}, this.attributes, attrs);\n        var error = this.validationError = this.validate(attrs, options) || null;\n        if (!error) return true;\n        this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n        return false;\n    },\n\n    _createPropertyDefinition: function (name, desc, isSession) {\n        return createPropertyDefinition(this, name, desc, isSession);\n    },\n\n    // just makes friendlier errors when trying to define a new model\n    // only used when setting up original property definitions\n    _ensureValidType: function (type) {\n        return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n            .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n    },\n\n    getAttributes: function (options, raw) {\n        options = assign({\n            session: false,\n            props: false,\n            derived: false\n        }, options || {});\n        var res = {};\n        var val, def;\n        for (var item in this._definition) {\n            def = this._definition[item];\n            if ((options.session && def.session) || (options.props && !def.session)) {\n                val = raw ? this._values[item] : this[item];\n                if (raw && val && isFunction(val.serialize)) val = val.serialize();\n                if (typeof val === 'undefined') val = result(def, 'default');\n                if (typeof val !== 'undefined') res[item] = val;\n            }\n        }\n        if (options.derived) {\n            for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n        }\n        return res;\n    },\n\n    _initDerived: function () {\n        var self = this;\n\n        forOwn(this._derived, function (value, name) {\n            var def = self._derived[name];\n            def.deps = def.depList;\n\n            var update = function () {\n                var newVal = def.fn.call(self);\n\n                if (self._cache[name] !== newVal || !def.cache) {\n                    if (def.cache) {\n                        self._previousAttributes[name] = self._cache[name];\n                    }\n                    self._cache[name] = newVal;\n                    self.trigger('change:' + name, self, self._cache[name]);\n                }\n            };\n\n            def.deps.forEach(function (propString) {\n                self._keyTree.add(propString, update);\n            });\n        });\n\n        this.on('all', function (eventName) {\n            if (changeRE.test(eventName)) {\n                self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n                    fn();\n                });\n            }\n        }, this);\n    },\n\n    _getDerivedProperty: function (name, flushCache) {\n        // is this a derived property that is cached\n        if (this._derived[name].cache) {\n            //set if this is the first time, or flushCache is set\n            if (flushCache || !this._cache.hasOwnProperty(name)) {\n                this._cache[name] = this._derived[name].fn.apply(this);\n            }\n            return this._cache[name];\n        } else {\n            return this._derived[name].fn.apply(this);\n        }\n    },\n\n    _initCollections: function () {\n        var coll;\n        if (!this._collections) return;\n        for (coll in this._collections) {\n            this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n        }\n    },\n\n    _initChildren: function () {\n        var child;\n        if (!this._children) return;\n        for (child in this._children) {\n            this._safeSet(child, new this._children[child]({}, {parent: this}));\n            this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n        }\n    },\n\n    // Returns a bound handler for doing event bubbling while\n    // adding a name to the change string.\n    _getCachedEventBubblingHandler: function (propertyName) {\n        if (!this._eventBubblingHandlerCache[propertyName]) {\n            this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n                if (changeRE.test(name)) {\n                    this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n                } else if (name === 'change') {\n                    this.trigger('change', this);\n                }\n            }.bind(this);\n        }\n        return this._eventBubblingHandlerCache[propertyName];\n    },\n\n    // Check that all required attributes are present\n    _verifyRequired: function () {\n        var attrs = this.attributes; // should include session\n        for (var def in this._definition) {\n            if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n                return false;\n            }\n        }\n        return true;\n    },\n\n    // expose safeSet method\n    _safeSet: function safeSet(property, value) {\n        if (property in this) {\n            throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n        }\n        this[property] = value;\n        return this;\n    }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n    attributes: {\n        get: function () {\n            return this.getAttributes({props: true, session: true});\n        }\n    },\n    all: {\n        get: function () {\n            return this.getAttributes({\n                session: true,\n                props: true,\n                derived: true\n            });\n        }\n    },\n    isState: {\n        get: function () { return true; },\n        set: function () { }\n    }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n    var def = object._definition[name] = {};\n    var type, descArray;\n\n    if (isString(desc)) {\n        // grab our type if all we've got is a string\n        type = object._ensureValidType(desc);\n        if (type) def.type = type;\n    } else {\n        //Transform array of ['type', required, default] to object form\n        if (Array.isArray(desc)) {\n            descArray = desc;\n            desc = {\n                type: descArray[0],\n                required: descArray[1],\n                'default': descArray[2]\n            };\n        }\n\n        type = object._ensureValidType(desc.type);\n        if (type) def.type = type;\n\n        if (desc.required) def.required = true;\n\n        if (desc['default'] && typeof desc['default'] === 'object') {\n            throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n        }\n\n        def['default'] = desc['default'];\n\n        def.allowNull = desc.allowNull ? desc.allowNull : false;\n        if (desc.setOnce) def.setOnce = true;\n        if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n        def.test = desc.test;\n        def.values = desc.values;\n    }\n    if (isSession) def.session = true;\n\n    if (!type) {\n        type = isString(desc) ? desc : desc.type;\n        // TODO: start throwing a TypeError in future major versions instead of warning\n        console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n    }\n\n    // define a getter/setter on the prototype\n    // but they get/set on the instance\n    Object.defineProperty(object, name, {\n        set: function (val) {\n            this.set(name, val);\n        },\n        get: function () {\n            if (!this._values) {\n                throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n            }\n            var value = this._values[name];\n            var typeDef = this._dataTypes[def.type];\n            if (typeof value !== 'undefined') {\n                if (typeDef && typeDef.get) {\n                    value = typeDef.get(value);\n                }\n                return value;\n            }\n            var defaultValue = result(def, 'default');\n            this._values[name] = defaultValue;\n            // If we've set a defaultValue, fire a change handler effectively marking\n            // its change from undefined to the default value.\n            if (typeof defaultValue !== 'undefined') {\n                var onChange = this._getOnChangeForType(def.type);\n                onChange(defaultValue, value, name);\n            }\n            return defaultValue;\n        }\n    });\n\n    return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n    var def = modelProto._derived[name] = {\n        fn: isFunction(definition) ? definition : definition.fn,\n        cache: (definition.cache !== false),\n        depList: definition.deps || []\n    };\n\n    // add to our shared dependency list\n    def.depList.forEach(function (dep) {\n        modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n    });\n\n    // defined a top-level getter for derived names\n    Object.defineProperty(modelProto, name, {\n        get: function () {\n            return this._getDerivedProperty(name);\n        },\n        set: function () {\n            throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n        }\n    });\n}\n\nvar dataTypes = {\n    string: {\n        'default': function () {\n            return '';\n        }\n    },\n    date: {\n        set: function (newVal) {\n            var newType;\n            if (newVal == null) {\n                newType = typeof null;\n            } else if (!isDate(newVal)) {\n                var err = null;\n                var dateVal = new Date(newVal).valueOf();\n                if (isNaN(dateVal)) {\n                    // If the newVal cant be parsed, then try parseInt first\n                    dateVal = new Date(parseInt(newVal, 10)).valueOf();\n                    if (isNaN(dateVal)) err = true;\n                }\n                newVal = dateVal;\n                newType = 'date';\n                if (err) {\n                    newType = typeof newVal;\n                }\n            } else {\n                newType = 'date';\n                newVal = newVal.valueOf();\n            }\n\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        get: function (val) {\n            if (val == null) { return val; }\n            return new Date(val);\n        },\n        'default': function () {\n            return new Date();\n        }\n    },\n    array: {\n        set: function (newVal) {\n            return {\n                val: newVal,\n                type: Array.isArray(newVal) ? 'array' : typeof newVal\n            };\n        },\n        'default': function () {\n            return [];\n        }\n    },\n    object: {\n        set: function (newVal) {\n            var newType = typeof newVal;\n            // we have to have a way of supporting \"missing\" objects.\n            // Null is an object, but setting a value to undefined\n            // should work too, IMO. We just override it, in that case.\n            if (newType !== 'object' && newVal === undefined) {\n                newVal = null;\n                newType = 'object';\n            }\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        'default': function () {\n            return {};\n        }\n    },\n    // the `state` data type is a bit special in that setting it should\n    // also bubble events\n    state: {\n        set: function (newVal) {\n            var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n            if (isInstance) {\n                return {\n                    val: newVal,\n                    type: 'state'\n                };\n            } else {\n                return {\n                    val: newVal,\n                    type: typeof newVal\n                };\n            }\n        },\n        compare: function (currentVal, newVal) {\n            return currentVal === newVal;\n        },\n\n        onChange : function(newVal, previousVal, attributeName){\n            // if this has changed we want to also handle\n            // event propagation\n            if (previousVal) {\n                this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n\n            if (newVal != null) {\n                this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n        }\n    }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n    /*jshint validthis:true*/\n    var parent = this;\n    var child;\n\n    // The constructor function for the new subclass is either defined by you\n    // (the \"constructor\" property in your `extend` definition), or defaulted\n    // by us to simply call the parent's constructor.\n    if (protoProps 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child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n    // Mix in all prototype properties to the subclass if supplied.\n    if (protoProps) {\n        var omitFromExtend = [\n            'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n        ];\n        for(var i = 0; i < arguments.length; i++) {\n            var def = arguments[i];\n            if (def.dataTypes) {\n                forOwn(def.dataTypes, function (def, name) {\n                    child.prototype._dataTypes[name] = def;\n                });\n            }\n            if (def.props) {\n                forOwn(def.props, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def);\n                });\n            }\n            if (def.session) {\n                forOwn(def.session, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def, true);\n                });\n            }\n     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sourceURL=webpack-internal:///ef45\n")}}]);- Exclude checks
FIXME found Open
Open
(window.webpackJsonp=window.webpackJsonp||[]).push([["npm.ampersand-state"],{ef45:function(module,exports,__webpack_require__){"use strict";eval("\n/*$AMPERSAND_VERSION*/\nvar uniqueId = __webpack_require__(/*! lodash/uniqueId */ \"6d0d\");\nvar assign = __webpack_require__(/*! lodash/assign */ \"5ad5\");\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = __webpack_require__(/*! lodash/omit */ \"4633\");\nvar escape = __webpack_require__(/*! lodash/escape */ \"740c\");\nvar forOwn = __webpack_require__(/*! lodash/forOwn */ \"436f\");\nvar includes = __webpack_require__(/*! lodash/includes */ \"e2c7\");\nvar isString = __webpack_require__(/*! lodash/isString */ \"5fa3\");\nvar isObject = __webpack_require__(/*! lodash/isObject */ \"d3a8\");\nvar isDate = __webpack_require__(/*! lodash/isDate */ \"7f93\");\nvar isFunction = __webpack_require__(/*! lodash/isFunction */ \"f3b0\");\nvar _isEqual = __webpack_require__(/*! lodash/isEqual */ \"f8a3\"); // to avoid shadowing\nvar has = __webpack_require__(/*! lodash/has */ \"b055\");\nvar result = __webpack_require__(/*! lodash/result */ \"80c9\");\nvar union = __webpack_require__(/*! lodash/union */ \"c80f\");\nvar Events = __webpack_require__(/*! ampersand-events */ \"13c2\");\nvar KeyTree = __webpack_require__(/*! key-tree-store */ \"8849\");\nvar arrayNext = __webpack_require__(/*! array-next */ \"d1bb\");\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n options || (options = {});\n this.cid || (this.cid = uniqueId('state'));\n this._events = {};\n this._values = {};\n this._eventBubblingHandlerCache = {};\n this._definition = Object.create(this._definition);\n if (options.parse) attrs = this.parse(attrs, options);\n this.parent = options.parent;\n this.collection = options.collection;\n this._keyTree = new KeyTree();\n this._initCollections();\n this._initChildren();\n this._cache = {};\n this._previousAttributes = {};\n if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n this._changed = {};\n if (this._derived) this._initDerived();\n if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n // can be allow, ignore, reject\n extraProperties: 'ignore',\n\n idAttribute: 'id',\n\n namespaceAttribute: 'namespace',\n\n typeAttribute: 'modelType',\n\n // Stubbed out to be overwritten\n initialize: function () {\n return this;\n },\n\n // Get ID of model per configuration.\n // Should *always* be how ID is determined by other code.\n getId: function () {\n return this[this.idAttribute];\n },\n\n // Get namespace of model per configuration.\n // Should *always* be how namespace is determined by other code.\n getNamespace: function () {\n return this[this.namespaceAttribute];\n },\n\n // Get type of model per configuration.\n // Should *always* be how type is determined by other code.\n getType: function () {\n return this[this.typeAttribute];\n },\n\n // A model is new if it has never been saved to the server, and lacks an id.\n isNew: function () {\n return this.getId() == null;\n },\n\n // get HTML-escaped value of attribute\n escape: function (attr) {\n return escape(this.get(attr));\n },\n\n // Check if the model is currently in a valid state.\n isValid: function (options) {\n return this._validate({}, assign(options || {}, { validate: true }));\n },\n\n // Parse can be used remap/restructure/rename incoming properties\n // before they are applied to attributes.\n parse: function (resp, options) {\n //jshint unused:false\n return resp;\n },\n\n // Serialize is the inverse of `parse` it lets you massage data\n // on the way out. Before, sending to server, for example.\n serialize: function (options) {\n var attrOpts = assign({props: true}, options);\n var res = this.getAttributes(attrOpts, true);\n \n var setFromSerializedValue = function (value, key) {\n\t res[key] = this[key].serialize();\n }.bind(this);\n \n forOwn(this._children, setFromSerializedValue);\n forOwn(this._collections, setFromSerializedValue);\n return res;\n },\n\n // Main set method used by generated setters/getters and can\n // be used directly if you need to pass options or set multiple\n // properties at once.\n set: function (key, value, options) {\n var self = this;\n var extraProperties = this.extraProperties;\n var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n // Handle both `\"key\", value` and `{key: value}` -style arguments.\n if (isObject(key) || key === null) {\n attrs = key;\n options = value;\n } else {\n attrs = {};\n attrs[key] = value;\n }\n\n options = options || {};\n\n if (!this._validate(attrs, options)) return false;\n\n // Extract attributes and options.\n unset = options.unset;\n silent = options.silent;\n initial = options.initial;\n\n // Initialize change tracking.\n wasChanging = this._changing;\n this._changing = true;\n changeEvents = [];\n\n // if not already changing, store previous\n if (initial) {\n this._previousAttributes = {};\n } else if (!wasChanging) {\n this._previousAttributes = this.attributes;\n this._changed = {};\n }\n\n // For each `set` attribute...\n for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n attr = keys[i];\n newVal = attrs[attr];\n newType = typeof newVal;\n currentVal = this._values[attr];\n def = this._definition[attr];\n\n if (!def) {\n // if this is a child model or collection\n if (this._children[attr] || this._collections[attr]) {\n if (!isObject(newVal)) {\n newVal = {};\n }\n\n this[attr].set(newVal, options);\n continue;\n } else if (extraProperties === 'ignore') {\n continue;\n } else if (extraProperties === 'reject') {\n throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n } else if (extraProperties === 'allow') {\n def = this._createPropertyDefinition(attr, 'any');\n } else if (extraProperties) {\n throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n }\n }\n\n isEqual = this._getCompareForType(def.type);\n onChange = this._getOnChangeForType(def.type);\n dataType = this._dataTypes[def.type];\n\n // check type if we have one\n if (dataType && dataType.set) {\n cast = dataType.set(newVal);\n newVal = cast.val;\n newType = cast.type;\n }\n\n // If we've defined a test, run it\n if (def.test) {\n err = def.test.call(this, newVal, newType);\n if (err) {\n throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n }\n }\n\n // If we are required but undefined, throw error.\n // If we are null and are not allowing null, throw error\n // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n if (newVal === undefined && def.required) {\n throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (newVal === null && def.required && !def.allowNull) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n }\n if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (def.values && !includes(def.values, newVal)) {\n var defaultValue = result(def, 'default');\n if (unset && defaultValue !== undefined) {\n newVal = defaultValue;\n } else if (!unset || (unset && newVal !== undefined)) {\n throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n }\n }\n\n // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n // enforce `setOnce` for properties if set\n if (def.setOnce && currentVal !== undefined && hasChanged) {\n throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n }\n\n // set/unset attributes.\n // If this is not the initial set, keep track of changed attributes\n // and push to changeEvents array so we can fire events.\n if (hasChanged) {\n\n // This fires no matter what, even on initial set.\n onChange(newVal, currentVal, attr);\n\n // If this is a change (not an initial set), mark the change.\n // Note it's impossible to unset on the initial set (it will already be unset),\n // so we only include that logic here.\n if (!initial) {\n this._changed[attr] = newVal;\n this._previousAttributes[attr] = currentVal;\n if (unset) {\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._values[attr];\n }\n if (!silent) {\n changeEvents.push({prev: currentVal, val: newVal, key: attr});\n }\n }\n if (!unset) {\n this._values[attr] = newVal;\n }\n } else {\n // Not changed\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._changed[attr];\n }\n }\n\n // Fire events. This array is not populated if we are told to be silent.\n if (changeEvents.length) this._pending = true;\n changeEvents.forEach(function (change) {\n self.trigger('change:' + change.key, self, change.val, options);\n });\n\n // You might be wondering why there's a `while` loop here. Changes can\n // be recursively nested within `\"change\"` events.\n if (wasChanging) return this;\n while (this._pending) {\n this._pending = false;\n this.trigger('change', this, options);\n }\n this._pending = false;\n this._changing = false;\n return this;\n },\n\n get: function (attr) {\n return this[attr];\n },\n\n // Toggle boolean properties or properties that have a `values`\n // array in its definition.\n toggle: function (property) {\n var def = this._definition[property];\n if (def.type === 'boolean') {\n // if it's a bool, just flip it\n this[property] = !this[property];\n } else if (def && def.values) {\n // If it's a property with an array of values\n // skip to the next one looping back if at end.\n this[property] = arrayNext(def.values, this[property]);\n } else {\n throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n }\n return this;\n },\n\n // Get all of the attributes of the model at the time of the previous\n // `\"change\"` event.\n previousAttributes: function () {\n return cloneObj(this._previousAttributes);\n },\n\n // Determine if the model has changed since the last `\"change\"` event.\n // If you specify an attribute name, determine if that attribute has changed.\n hasChanged: function (attr) {\n if (attr == null) return !!Object.keys(this._changed).length;\n if (has(this._derived, attr)) {\n return this._derived[attr].depList.some(function (dep) {\n return this.hasChanged(dep);\n }, this);\n }\n return has(this._changed, attr);\n },\n\n // Return an object containing all the attributes that have changed, or\n // false if there are no changed attributes. Useful for determining what\n // parts of a view need to be updated and/or what attributes need to be\n // persisted to the server. Unset attributes will be set to undefined.\n // You can also pass an attributes object to diff against the model,\n // determining if there *would be* a change.\n changedAttributes: function (diff) {\n if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n var val, changed = false;\n var old = this._changing ? this._previousAttributes : this.attributes;\n var def, isEqual;\n for (var attr in diff) {\n def = this._definition[attr];\n if (!def) continue;\n isEqual = this._getCompareForType(def.type);\n if (isEqual(old[attr], (val = diff[attr]))) continue;\n (changed || (changed = {}))[attr] = val;\n }\n return changed;\n },\n\n toJSON: function () {\n return this.serialize();\n },\n\n unset: function (attrs, options) {\n var self = this;\n attrs = Array.isArray(attrs) ? attrs : [attrs];\n attrs.forEach(function (key) {\n var def = self._definition[key];\n if (!def) return;\n var val;\n if (def.required) {\n val = result(def, 'default');\n return self.set(key, val, options);\n } else {\n return self.set(key, val, assign({}, options, {unset: true}));\n }\n });\n },\n\n clear: function (options) {\n var self = this;\n Object.keys(this.attributes).forEach(function (key) {\n self.unset(key, options);\n });\n return this;\n },\n\n previous: function (attr) {\n if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n return this._previousAttributes[attr];\n },\n\n // Get default values for a certain type\n _getDefaultForType: function (type) {\n var dataType = this._dataTypes[type];\n return dataType && dataType['default'];\n },\n\n // Determine which comparison algorithm to use for comparing a property\n _getCompareForType: function (type) {\n var dataType = this._dataTypes[type];\n if (dataType && dataType.compare) return dataType.compare.bind(this);\n return _isEqual; // if no compare function is defined, use _.isEqual\n },\n\n _getOnChangeForType : function(type){\n var dataType = this._dataTypes[type];\n if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n return noop;\n },\n\n // Run validation against the next complete set of model attributes,\n // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n _validate: function (attrs, options) {\n if (!options.validate || !this.validate) return true;\n attrs = assign({}, this.attributes, attrs);\n var error = this.validationError = this.validate(attrs, options) || null;\n if (!error) return true;\n this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n return false;\n },\n\n _createPropertyDefinition: function (name, desc, isSession) {\n return createPropertyDefinition(this, name, desc, isSession);\n },\n\n // just makes friendlier errors when trying to define a new model\n // only used when setting up original property definitions\n _ensureValidType: function (type) {\n return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n },\n\n getAttributes: function (options, raw) {\n options = assign({\n session: false,\n props: false,\n derived: false\n }, options || {});\n var res = {};\n var val, def;\n for (var item in this._definition) {\n def = this._definition[item];\n if ((options.session && def.session) || (options.props && !def.session)) {\n val = raw ? this._values[item] : this[item];\n if (raw && val && isFunction(val.serialize)) val = val.serialize();\n if (typeof val === 'undefined') val = result(def, 'default');\n if (typeof val !== 'undefined') res[item] = val;\n }\n }\n if (options.derived) {\n for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n }\n return res;\n },\n\n _initDerived: function () {\n var self = this;\n\n forOwn(this._derived, function (value, name) {\n var def = self._derived[name];\n def.deps = def.depList;\n\n var update = function () {\n var newVal = def.fn.call(self);\n\n if (self._cache[name] !== newVal || !def.cache) {\n if (def.cache) {\n self._previousAttributes[name] = self._cache[name];\n }\n self._cache[name] = newVal;\n self.trigger('change:' + name, self, self._cache[name]);\n }\n };\n\n def.deps.forEach(function (propString) {\n self._keyTree.add(propString, update);\n });\n });\n\n this.on('all', function (eventName) {\n if (changeRE.test(eventName)) {\n self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n fn();\n });\n }\n }, this);\n },\n\n _getDerivedProperty: function (name, flushCache) {\n // is this a derived property that is cached\n if (this._derived[name].cache) {\n //set if this is the first time, or flushCache is set\n if (flushCache || !this._cache.hasOwnProperty(name)) {\n this._cache[name] = this._derived[name].fn.apply(this);\n }\n return this._cache[name];\n } else {\n return this._derived[name].fn.apply(this);\n }\n },\n\n _initCollections: function () {\n var coll;\n if (!this._collections) return;\n for (coll in this._collections) {\n this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n }\n },\n\n _initChildren: function () {\n var child;\n if (!this._children) return;\n for (child in this._children) {\n this._safeSet(child, new this._children[child]({}, {parent: this}));\n this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n }\n },\n\n // Returns a bound handler for doing event bubbling while\n // adding a name to the change string.\n _getCachedEventBubblingHandler: function (propertyName) {\n if (!this._eventBubblingHandlerCache[propertyName]) {\n this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n if (changeRE.test(name)) {\n this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n } else if (name === 'change') {\n this.trigger('change', this);\n }\n }.bind(this);\n }\n return this._eventBubblingHandlerCache[propertyName];\n },\n\n // Check that all required attributes are present\n _verifyRequired: function () {\n var attrs = this.attributes; // should include session\n for (var def in this._definition) {\n if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n return false;\n }\n }\n return true;\n },\n\n // expose safeSet method\n _safeSet: function safeSet(property, value) {\n if (property in this) {\n throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n }\n this[property] = value;\n return this;\n }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n attributes: {\n get: function () {\n return this.getAttributes({props: true, session: true});\n }\n },\n all: {\n get: function () {\n return this.getAttributes({\n session: true,\n props: true,\n derived: true\n });\n }\n },\n isState: {\n get: function () { return true; },\n set: function () { }\n }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n var def = object._definition[name] = {};\n var type, descArray;\n\n if (isString(desc)) {\n // grab our type if all we've got is a string\n type = object._ensureValidType(desc);\n if (type) def.type = type;\n } else {\n //Transform array of ['type', required, default] to object form\n if (Array.isArray(desc)) {\n descArray = desc;\n desc = {\n type: descArray[0],\n required: descArray[1],\n 'default': descArray[2]\n };\n }\n\n type = object._ensureValidType(desc.type);\n if (type) def.type = type;\n\n if (desc.required) def.required = true;\n\n if (desc['default'] && typeof desc['default'] === 'object') {\n throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n }\n\n def['default'] = desc['default'];\n\n def.allowNull = desc.allowNull ? desc.allowNull : false;\n if (desc.setOnce) def.setOnce = true;\n if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n def.test = desc.test;\n def.values = desc.values;\n }\n if (isSession) def.session = true;\n\n if (!type) {\n type = isString(desc) ? desc : desc.type;\n // TODO: start throwing a TypeError in future major versions instead of warning\n console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n }\n\n // define a getter/setter on the prototype\n // but they get/set on the instance\n Object.defineProperty(object, name, {\n set: function (val) {\n this.set(name, val);\n },\n get: function () {\n if (!this._values) {\n throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n }\n var value = this._values[name];\n var typeDef = this._dataTypes[def.type];\n if (typeof value !== 'undefined') {\n if (typeDef && typeDef.get) {\n value = typeDef.get(value);\n }\n return value;\n }\n var defaultValue = result(def, 'default');\n this._values[name] = defaultValue;\n // If we've set a defaultValue, fire a change handler effectively marking\n // its change from undefined to the default value.\n if (typeof defaultValue !== 'undefined') {\n var onChange = this._getOnChangeForType(def.type);\n onChange(defaultValue, value, name);\n }\n return defaultValue;\n }\n });\n\n return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n var def = modelProto._derived[name] = {\n fn: isFunction(definition) ? definition : definition.fn,\n cache: (definition.cache !== false),\n depList: definition.deps || []\n };\n\n // add to our shared dependency list\n def.depList.forEach(function (dep) {\n modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n });\n\n // defined a top-level getter for derived names\n Object.defineProperty(modelProto, name, {\n get: function () {\n return this._getDerivedProperty(name);\n },\n set: function () {\n throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n }\n });\n}\n\nvar dataTypes = {\n string: {\n 'default': function () {\n return '';\n }\n },\n date: {\n set: function (newVal) {\n var newType;\n if (newVal == null) {\n newType = typeof null;\n } else if (!isDate(newVal)) {\n var err = null;\n var dateVal = new Date(newVal).valueOf();\n if (isNaN(dateVal)) {\n // If the newVal cant be parsed, then try parseInt first\n dateVal = new Date(parseInt(newVal, 10)).valueOf();\n if (isNaN(dateVal)) err = true;\n }\n newVal = dateVal;\n newType = 'date';\n if (err) {\n newType = typeof newVal;\n }\n } else {\n newType = 'date';\n newVal = newVal.valueOf();\n }\n\n return {\n val: newVal,\n type: newType\n };\n },\n get: function (val) {\n if (val == null) { return val; }\n return new Date(val);\n },\n 'default': function () {\n return new Date();\n }\n },\n array: {\n set: function (newVal) {\n return {\n val: newVal,\n type: Array.isArray(newVal) ? 'array' : typeof newVal\n };\n },\n 'default': function () {\n return [];\n }\n },\n object: {\n set: function (newVal) {\n var newType = typeof newVal;\n // we have to have a way of supporting \"missing\" objects.\n // Null is an object, but setting a value to undefined\n // should work too, IMO. We just override it, in that case.\n if (newType !== 'object' && newVal === undefined) {\n newVal = null;\n newType = 'object';\n }\n return {\n val: newVal,\n type: newType\n };\n },\n 'default': function () {\n return {};\n }\n },\n // the `state` data type is a bit special in that setting it should\n // also bubble events\n state: {\n set: function (newVal) {\n var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n if (isInstance) {\n return {\n val: newVal,\n type: 'state'\n };\n } else {\n return {\n val: newVal,\n type: typeof newVal\n };\n }\n },\n compare: function (currentVal, newVal) {\n return currentVal === newVal;\n },\n\n onChange : function(newVal, previousVal, attributeName){\n // if this has changed we want to also handle\n // event propagation\n if (previousVal) {\n this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n\n if (newVal != null) {\n this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n }\n }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n /*jshint validthis:true*/\n var parent = this;\n var child;\n\n // The constructor function for the new subclass is either defined by you\n // (the \"constructor\" property in your `extend` definition), or defaulted\n // by us to simply call the parent's constructor.\n if (protoProps && protoProps.hasOwnProperty('constructor')) {\n child = protoProps.constructor;\n } else {\n child = function () {\n return parent.apply(this, arguments);\n };\n }\n\n // Add static properties to the constructor function from parent\n assign(child, parent);\n\n // Set the prototype chain to inherit from `parent`, without calling\n // `parent`'s constructor function.\n var Surrogate = function () { this.constructor = child; };\n Surrogate.prototype = parent.prototype;\n child.prototype = new Surrogate();\n\n // set prototype level objects\n child.prototype._derived = assign({}, parent.prototype._derived);\n child.prototype._deps = assign({}, parent.prototype._deps);\n child.prototype._definition = assign({}, parent.prototype._definition);\n child.prototype._collections = assign({}, parent.prototype._collections);\n child.prototype._children = assign({}, parent.prototype._children);\n child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n // Mix in all prototype properties to the subclass if supplied.\n if (protoProps) {\n var omitFromExtend = [\n 'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n ];\n for(var i = 0; i < arguments.length; i++) {\n var def = arguments[i];\n if (def.dataTypes) {\n forOwn(def.dataTypes, function (def, name) {\n child.prototype._dataTypes[name] = def;\n });\n }\n if (def.props) {\n forOwn(def.props, function (def, name) {\n createPropertyDefinition(child.prototype, name, def);\n });\n }\n if (def.session) {\n forOwn(def.session, function (def, name) {\n createPropertyDefinition(child.prototype, name, def, true);\n });\n }\n if (def.derived) {\n forOwn(def.derived, function (def, name) {\n createDerivedProperty(child.prototype, name, def);\n });\n }\n if (def.collections) {\n forOwn(def.collections, function (constructor, name) {\n child.prototype._collections[name] = constructor;\n });\n }\n if (def.children) {\n forOwn(def.children, function (constructor, name) {\n child.prototype._children[name] = constructor;\n });\n }\n assign(child.prototype, omit(def, omitFromExtend));\n }\n }\n\n // Set a convenience property in case the parent's prototype is needed\n // later.\n child.__super__ = parent.prototype;\n\n return child;\n}\n\nBase.extend = extend;\n\n// Our main exports\nmodule.exports = Base;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"ef45.js","sources":["webpack:///./node_modules/ampersand-state/ampersand-state.js?63d4"],"sourcesContent":["'use strict';\n/*$AMPERSAND_VERSION*/\nvar uniqueId = require('lodash/uniqueId');\nvar assign = require('lodash/assign');\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = require('lodash/omit');\nvar escape = require('lodash/escape');\nvar forOwn = require('lodash/forOwn');\nvar includes = require('lodash/includes');\nvar isString = require('lodash/isString');\nvar isObject = require('lodash/isObject');\nvar isDate = require('lodash/isDate');\nvar isFunction = require('lodash/isFunction');\nvar _isEqual = require('lodash/isEqual'); // to avoid shadowing\nvar has = require('lodash/has');\nvar result = require('lodash/result');\nvar union = require('lodash/union');\nvar Events = require('ampersand-events');\nvar KeyTree = require('key-tree-store');\nvar arrayNext = require('array-next');\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n    options || (options = {});\n    this.cid || (this.cid = uniqueId('state'));\n    this._events = {};\n    this._values = {};\n    this._eventBubblingHandlerCache = {};\n    this._definition = Object.create(this._definition);\n    if (options.parse) attrs = this.parse(attrs, options);\n    this.parent = options.parent;\n    this.collection = options.collection;\n    this._keyTree = new KeyTree();\n    this._initCollections();\n    this._initChildren();\n    this._cache = {};\n    this._previousAttributes = {};\n    if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n    this._changed = {};\n    if (this._derived) this._initDerived();\n    if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n    // can be allow, ignore, reject\n    extraProperties: 'ignore',\n\n    idAttribute: 'id',\n\n    namespaceAttribute: 'namespace',\n\n    typeAttribute: 'modelType',\n\n    // Stubbed out to be overwritten\n    initialize: function () {\n        return this;\n    },\n\n    // Get ID of model per configuration.\n    // Should *always* be how ID is determined by other code.\n    getId: function () {\n        return this[this.idAttribute];\n    },\n\n    // Get namespace of model per configuration.\n    // Should *always* be how namespace is determined by other code.\n    getNamespace: function () {\n        return this[this.namespaceAttribute];\n    },\n\n    // Get type of model per configuration.\n    // Should *always* be how type is determined by other code.\n    getType: function () {\n        return this[this.typeAttribute];\n    },\n\n    // A model is new if it has never been saved to the server, and lacks an id.\n    isNew: function () {\n        return this.getId() == null;\n    },\n\n    // get HTML-escaped value of attribute\n    escape: function (attr) {\n        return escape(this.get(attr));\n    },\n\n    // Check if the model is currently in a valid state.\n    isValid: function (options) {\n        return this._validate({}, assign(options || {}, { validate: true }));\n    },\n\n    // Parse can be used remap/restructure/rename incoming properties\n    // before they are applied to attributes.\n    parse: function (resp, options) {\n        //jshint unused:false\n        return resp;\n    },\n\n    // Serialize is the inverse of `parse` it lets you massage data\n    // on the way out. Before, sending to server, for example.\n    serialize: function (options) {\n        var attrOpts = assign({props: true}, options);\n        var res = this.getAttributes(attrOpts, true);\n        \n        var setFromSerializedValue = function (value, key) {\n\t        res[key] = this[key].serialize();\n        }.bind(this);\n        \n        forOwn(this._children, setFromSerializedValue);\n        forOwn(this._collections, setFromSerializedValue);\n        return res;\n    },\n\n    // Main set method used by generated setters/getters and can\n    // be used directly if you need to pass options or set multiple\n    // properties at once.\n    set: function (key, value, options) {\n        var self = this;\n        var extraProperties = this.extraProperties;\n        var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n            attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n        // Handle both `\"key\", value` and `{key: value}` -style arguments.\n        if (isObject(key) || key === null) {\n            attrs = key;\n            options = value;\n        } else {\n            attrs = {};\n            attrs[key] = value;\n        }\n\n        options = options || {};\n\n        if (!this._validate(attrs, options)) return false;\n\n        // Extract attributes and options.\n        unset = options.unset;\n        silent = options.silent;\n        initial = options.initial;\n\n        // Initialize change tracking.\n        wasChanging = this._changing;\n        this._changing = true;\n        changeEvents = [];\n\n        // if not already changing, store previous\n        if (initial) {\n            this._previousAttributes = {};\n        } else if (!wasChanging) {\n            this._previousAttributes = this.attributes;\n            this._changed = {};\n        }\n\n        // For each `set` attribute...\n        for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n            attr = keys[i];\n            newVal = attrs[attr];\n            newType = typeof newVal;\n            currentVal = this._values[attr];\n            def = this._definition[attr];\n\n            if (!def) {\n                // if this is a child model or collection\n                if (this._children[attr] || this._collections[attr]) {\n                    if (!isObject(newVal)) {\n                        newVal = {};\n                    }\n\n                    this[attr].set(newVal, options);\n                    continue;\n                } else if (extraProperties === 'ignore') {\n                    continue;\n                } else if (extraProperties === 'reject') {\n                    throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n                } else if (extraProperties === 'allow') {\n                    def = this._createPropertyDefinition(attr, 'any');\n                } else if (extraProperties) {\n                    throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n                }\n            }\n\n            isEqual = this._getCompareForType(def.type);\n            onChange = this._getOnChangeForType(def.type);\n            dataType = this._dataTypes[def.type];\n\n            // check type if we have one\n            if (dataType && dataType.set) {\n                cast = dataType.set(newVal);\n                newVal = cast.val;\n                newType = cast.type;\n            }\n\n            // If we've defined a test, run it\n            if (def.test) {\n                err = def.test.call(this, newVal, newType);\n                if (err) {\n                    throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n                }\n            }\n\n            // If we are required but undefined, throw error.\n            // If we are null and are not allowing null, throw error\n            // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n            // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n            if (newVal === undefined && def.required) {\n                throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (newVal === null && def.required && !def.allowNull) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n            }\n            if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (def.values && !includes(def.values, newVal)) {\n                var defaultValue = result(def, 'default');\n                if (unset && defaultValue !== undefined) {\n                    newVal = defaultValue;\n                } else if (!unset || (unset && newVal !== undefined)) {\n                    throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n                }\n            }\n\n            // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n            hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n            // enforce `setOnce` for properties if set\n            if (def.setOnce && currentVal !== undefined && hasChanged) {\n                throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n            }\n\n            // set/unset attributes.\n            // If this is not the initial set, keep track of changed attributes\n            // and push to changeEvents array so we can fire events.\n            if (hasChanged) {\n\n                // This fires no matter what, even on initial set.\n                onChange(newVal, currentVal, attr);\n\n                // If this is a change (not an initial set), mark the change.\n                // Note it's impossible to unset on the initial set (it will already be unset),\n                // so we only include that logic here.\n                if (!initial) {\n                    this._changed[attr] = newVal;\n                    this._previousAttributes[attr] = currentVal;\n                    if (unset) {\n                        // FIXME delete is very slow. Can we get away with setting to undefined?\n                        delete this._values[attr];\n                    }\n                    if (!silent) {\n                        changeEvents.push({prev: currentVal, val: newVal, key: attr});\n                    }\n                }\n                if (!unset) {\n                    this._values[attr] = newVal;\n                }\n            } else {\n                // Not changed\n                // FIXME delete is very slow. Can we get away with setting to undefined?\n                delete this._changed[attr];\n            }\n        }\n\n        // Fire events. This array is not populated if we are told to be silent.\n        if (changeEvents.length) this._pending = true;\n        changeEvents.forEach(function (change) {\n            self.trigger('change:' + change.key, self, change.val, options);\n        });\n\n        // You might be wondering why there's a `while` loop here. Changes can\n        // be recursively nested within `\"change\"` events.\n        if (wasChanging) return this;\n        while (this._pending) {\n            this._pending = false;\n            this.trigger('change', this, options);\n        }\n        this._pending = false;\n        this._changing = false;\n        return this;\n    },\n\n    get: function (attr) {\n        return this[attr];\n    },\n\n    // Toggle boolean properties or properties that have a `values`\n    // array in its definition.\n    toggle: function (property) {\n        var def = this._definition[property];\n        if (def.type === 'boolean') {\n            // if it's a bool, just flip it\n            this[property] = !this[property];\n        } else if (def && def.values) {\n            // If it's a property with an array of values\n            // skip to the next one looping back if at end.\n            this[property] = arrayNext(def.values, this[property]);\n        } else {\n            throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n        }\n        return this;\n    },\n\n    // Get all of the attributes of the model at the time of the previous\n    // `\"change\"` event.\n    previousAttributes: function () {\n        return cloneObj(this._previousAttributes);\n    },\n\n    // Determine if the model has changed since the last `\"change\"` event.\n    // If you specify an attribute name, determine if that attribute has changed.\n    hasChanged: function (attr) {\n        if (attr == null) return !!Object.keys(this._changed).length;\n        if (has(this._derived, attr)) {\n            return this._derived[attr].depList.some(function (dep) {\n                return this.hasChanged(dep);\n            }, this);\n        }\n        return has(this._changed, attr);\n    },\n\n    // Return an object containing all the attributes that have changed, or\n    // false if there are no changed attributes. Useful for determining what\n    // parts of a view need to be updated and/or what attributes need to be\n    // persisted to the server. Unset attributes will be set to undefined.\n    // You can also pass an attributes object to diff against the model,\n    // determining if there *would be* a change.\n    changedAttributes: function (diff) {\n        if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n        var val, changed = false;\n        var old = this._changing ? this._previousAttributes : this.attributes;\n        var def, isEqual;\n        for (var attr in diff) {\n            def = this._definition[attr];\n            if (!def) continue;\n            isEqual = this._getCompareForType(def.type);\n            if (isEqual(old[attr], (val = diff[attr]))) continue;\n            (changed || (changed = {}))[attr] = val;\n        }\n        return changed;\n    },\n\n    toJSON: function () {\n        return this.serialize();\n    },\n\n    unset: function (attrs, options) {\n        var self = this;\n        attrs = Array.isArray(attrs) ? attrs : [attrs];\n        attrs.forEach(function (key) {\n            var def = self._definition[key];\n            if (!def) return;\n            var val;\n            if (def.required) {\n                val = result(def, 'default');\n                return self.set(key, val, options);\n            } else {\n                return self.set(key, val, assign({}, options, {unset: true}));\n            }\n        });\n    },\n\n    clear: function (options) {\n        var self = this;\n        Object.keys(this.attributes).forEach(function (key) {\n            self.unset(key, options);\n        });\n        return this;\n    },\n\n    previous: function (attr) {\n        if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n        return this._previousAttributes[attr];\n    },\n\n    // Get default values for a certain type\n    _getDefaultForType: function (type) {\n        var dataType = this._dataTypes[type];\n        return dataType && dataType['default'];\n    },\n\n    // Determine which comparison algorithm to use for comparing a property\n    _getCompareForType: function (type) {\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.compare) return dataType.compare.bind(this);\n        return _isEqual; // if no compare function is defined, use _.isEqual\n    },\n\n    _getOnChangeForType : function(type){\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n        return noop;\n    },\n\n    // Run validation against the next complete set of model attributes,\n    // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n    _validate: function (attrs, options) {\n        if (!options.validate || !this.validate) return true;\n        attrs = assign({}, this.attributes, attrs);\n        var error = this.validationError = this.validate(attrs, options) || null;\n        if (!error) return true;\n        this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n        return false;\n    },\n\n    _createPropertyDefinition: function (name, desc, isSession) {\n        return createPropertyDefinition(this, name, desc, isSession);\n    },\n\n    // just makes friendlier errors when trying to define a new model\n    // only used when setting up original property definitions\n    _ensureValidType: function (type) {\n        return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n            .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n    },\n\n    getAttributes: function (options, raw) {\n        options = assign({\n            session: false,\n            props: false,\n            derived: false\n        }, options || {});\n        var res = {};\n        var val, def;\n        for (var item in this._definition) {\n            def = this._definition[item];\n            if ((options.session && def.session) || (options.props && !def.session)) {\n                val = raw ? this._values[item] : this[item];\n                if (raw && val && isFunction(val.serialize)) val = val.serialize();\n                if (typeof val === 'undefined') val = result(def, 'default');\n                if (typeof val !== 'undefined') res[item] = val;\n            }\n        }\n        if (options.derived) {\n            for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n        }\n        return res;\n    },\n\n    _initDerived: function () {\n        var self = this;\n\n        forOwn(this._derived, function (value, name) {\n            var def = self._derived[name];\n            def.deps = def.depList;\n\n            var update = function () {\n                var newVal = def.fn.call(self);\n\n                if (self._cache[name] !== newVal || !def.cache) {\n                    if (def.cache) {\n                        self._previousAttributes[name] = self._cache[name];\n                    }\n                    self._cache[name] = newVal;\n                    self.trigger('change:' + name, self, self._cache[name]);\n                }\n            };\n\n            def.deps.forEach(function (propString) {\n                self._keyTree.add(propString, update);\n            });\n        });\n\n        this.on('all', function (eventName) {\n            if (changeRE.test(eventName)) {\n                self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n                    fn();\n                });\n            }\n        }, this);\n    },\n\n    _getDerivedProperty: function (name, flushCache) {\n        // is this a derived property that is cached\n        if (this._derived[name].cache) {\n            //set if this is the first time, or flushCache is set\n            if (flushCache || !this._cache.hasOwnProperty(name)) {\n                this._cache[name] = this._derived[name].fn.apply(this);\n            }\n            return this._cache[name];\n        } else {\n            return this._derived[name].fn.apply(this);\n        }\n    },\n\n    _initCollections: function () {\n        var coll;\n        if (!this._collections) return;\n        for (coll in this._collections) {\n            this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n        }\n    },\n\n    _initChildren: function () {\n        var child;\n        if (!this._children) return;\n        for (child in this._children) {\n            this._safeSet(child, new this._children[child]({}, {parent: this}));\n            this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n        }\n    },\n\n    // Returns a bound handler for doing event bubbling while\n    // adding a name to the change string.\n    _getCachedEventBubblingHandler: function (propertyName) {\n        if (!this._eventBubblingHandlerCache[propertyName]) {\n            this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n                if (changeRE.test(name)) {\n                    this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n                } else if (name === 'change') {\n                    this.trigger('change', this);\n                }\n            }.bind(this);\n        }\n        return this._eventBubblingHandlerCache[propertyName];\n    },\n\n    // Check that all required attributes are present\n    _verifyRequired: function () {\n        var attrs = this.attributes; // should include session\n        for (var def in this._definition) {\n            if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n                return false;\n            }\n        }\n        return true;\n    },\n\n    // expose safeSet method\n    _safeSet: function safeSet(property, value) {\n        if (property in this) {\n            throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n        }\n        this[property] = value;\n        return this;\n    }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n    attributes: {\n        get: function () {\n            return this.getAttributes({props: true, session: true});\n        }\n    },\n    all: {\n        get: function () {\n            return this.getAttributes({\n                session: true,\n                props: true,\n                derived: true\n            });\n        }\n    },\n    isState: {\n        get: function () { return true; },\n        set: function () { }\n    }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n    var def = object._definition[name] = {};\n    var type, descArray;\n\n    if (isString(desc)) {\n        // grab our type if all we've got is a string\n        type = object._ensureValidType(desc);\n        if (type) def.type = type;\n    } else {\n        //Transform array of ['type', required, default] to object form\n        if (Array.isArray(desc)) {\n            descArray = desc;\n            desc = {\n                type: descArray[0],\n                required: descArray[1],\n                'default': descArray[2]\n            };\n        }\n\n        type = object._ensureValidType(desc.type);\n        if (type) def.type = type;\n\n        if (desc.required) def.required = true;\n\n        if (desc['default'] && typeof desc['default'] === 'object') {\n            throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n        }\n\n        def['default'] = desc['default'];\n\n        def.allowNull = desc.allowNull ? desc.allowNull : false;\n        if (desc.setOnce) def.setOnce = true;\n        if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n        def.test = desc.test;\n        def.values = desc.values;\n    }\n    if (isSession) def.session = true;\n\n    if (!type) {\n        type = isString(desc) ? desc : desc.type;\n        // TODO: start throwing a TypeError in future major versions instead of warning\n        console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n    }\n\n    // define a getter/setter on the prototype\n    // but they get/set on the instance\n    Object.defineProperty(object, name, {\n        set: function (val) {\n            this.set(name, val);\n        },\n        get: function () {\n            if (!this._values) {\n                throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n            }\n            var value = this._values[name];\n            var typeDef = this._dataTypes[def.type];\n            if (typeof value !== 'undefined') {\n                if (typeDef && typeDef.get) {\n                    value = typeDef.get(value);\n                }\n                return value;\n            }\n            var defaultValue = result(def, 'default');\n            this._values[name] = defaultValue;\n            // If we've set a defaultValue, fire a change handler effectively marking\n            // its change from undefined to the default value.\n            if (typeof defaultValue !== 'undefined') {\n                var onChange = this._getOnChangeForType(def.type);\n                onChange(defaultValue, value, name);\n            }\n            return defaultValue;\n        }\n    });\n\n    return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n    var def = modelProto._derived[name] = {\n        fn: isFunction(definition) ? definition : definition.fn,\n        cache: (definition.cache !== false),\n        depList: definition.deps || []\n    };\n\n    // add to our shared dependency list\n    def.depList.forEach(function (dep) {\n        modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n    });\n\n    // defined a top-level getter for derived names\n    Object.defineProperty(modelProto, name, {\n        get: function () {\n            return this._getDerivedProperty(name);\n        },\n        set: function () {\n            throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n        }\n    });\n}\n\nvar dataTypes = {\n    string: {\n        'default': function () {\n            return '';\n        }\n    },\n    date: {\n        set: function (newVal) {\n            var newType;\n            if (newVal == null) {\n                newType = typeof null;\n            } else if (!isDate(newVal)) {\n                var err = null;\n                var dateVal = new Date(newVal).valueOf();\n                if (isNaN(dateVal)) {\n                    // If the newVal cant be parsed, then try parseInt first\n                    dateVal = new Date(parseInt(newVal, 10)).valueOf();\n                    if (isNaN(dateVal)) err = true;\n                }\n                newVal = dateVal;\n                newType = 'date';\n                if (err) {\n                    newType = typeof newVal;\n                }\n            } else {\n                newType = 'date';\n                newVal = newVal.valueOf();\n            }\n\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        get: function (val) {\n            if (val == null) { return val; }\n            return new Date(val);\n        },\n        'default': function () {\n            return new Date();\n        }\n    },\n    array: {\n        set: function (newVal) {\n            return {\n                val: newVal,\n                type: Array.isArray(newVal) ? 'array' : typeof newVal\n            };\n        },\n        'default': function () {\n            return [];\n        }\n    },\n    object: {\n        set: function (newVal) {\n            var newType = typeof newVal;\n            // we have to have a way of supporting \"missing\" objects.\n            // Null is an object, but setting a value to undefined\n            // should work too, IMO. We just override it, in that case.\n            if (newType !== 'object' && newVal === undefined) {\n                newVal = null;\n                newType = 'object';\n            }\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        'default': function () {\n            return {};\n        }\n    },\n    // the `state` data type is a bit special in that setting it should\n    // also bubble events\n    state: {\n        set: function (newVal) {\n            var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n            if (isInstance) {\n                return {\n                    val: newVal,\n                    type: 'state'\n                };\n            } else {\n                return {\n                    val: newVal,\n                    type: typeof newVal\n                };\n            }\n        },\n        compare: function (currentVal, newVal) {\n            return currentVal === newVal;\n        },\n\n        onChange : function(newVal, previousVal, attributeName){\n            // if this has changed we want to also handle\n            // event propagation\n            if (previousVal) {\n                this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n\n            if (newVal != null) {\n                this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n        }\n    }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n    /*jshint validthis:true*/\n    var parent = this;\n    var child;\n\n    // The constructor function for the new subclass is either defined by you\n    // (the \"constructor\" property in your `extend` definition), or defaulted\n    // by us to simply call the parent's constructor.\n    if (protoProps && protoProps.hasOwnProperty('constructor')) {\n        child = protoProps.constructor;\n    } else {\n        child = function () {\n            return parent.apply(this, arguments);\n        };\n    }\n\n    // Add static properties to the constructor function from parent\n    assign(child, parent);\n\n    // Set the prototype chain to inherit from `parent`, without calling\n    // `parent`'s constructor function.\n    var Surrogate = function () { this.constructor = child; };\n    Surrogate.prototype = parent.prototype;\n    child.prototype = new Surrogate();\n\n    // set prototype level objects\n    child.prototype._derived =  assign({}, parent.prototype._derived);\n    child.prototype._deps = assign({}, parent.prototype._deps);\n    child.prototype._definition = assign({}, parent.prototype._definition);\n    child.prototype._collections = assign({}, parent.prototype._collections);\n    child.prototype._children = assign({}, parent.prototype._children);\n    child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n    // Mix in all prototype properties to the subclass if supplied.\n    if (protoProps) {\n        var omitFromExtend = [\n            'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n        ];\n        for(var i = 0; i < arguments.length; i++) {\n            var def = arguments[i];\n            if (def.dataTypes) {\n                forOwn(def.dataTypes, function (def, name) {\n                    child.prototype._dataTypes[name] = def;\n                });\n            }\n            if (def.props) {\n                forOwn(def.props, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def);\n                });\n            }\n            if (def.session) {\n                forOwn(def.session, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def, true);\n                });\n            }\n     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sourceURL=webpack-internal:///ef45\n")}}]);- Exclude checks
TODO found Open
Open
(window.webpackJsonp=window.webpackJsonp||[]).push([["npm.ampersand-state"],{ef45:function(module,exports,__webpack_require__){"use strict";eval("\n/*$AMPERSAND_VERSION*/\nvar uniqueId = __webpack_require__(/*! lodash/uniqueId */ \"6d0d\");\nvar assign = __webpack_require__(/*! lodash/assign */ \"5ad5\");\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = __webpack_require__(/*! lodash/omit */ \"4633\");\nvar escape = __webpack_require__(/*! lodash/escape */ \"740c\");\nvar forOwn = __webpack_require__(/*! lodash/forOwn */ \"436f\");\nvar includes = __webpack_require__(/*! lodash/includes */ \"e2c7\");\nvar isString = __webpack_require__(/*! lodash/isString */ \"5fa3\");\nvar isObject = __webpack_require__(/*! lodash/isObject */ \"d3a8\");\nvar isDate = __webpack_require__(/*! lodash/isDate */ \"7f93\");\nvar isFunction = __webpack_require__(/*! lodash/isFunction */ \"f3b0\");\nvar _isEqual = __webpack_require__(/*! lodash/isEqual */ \"f8a3\"); // to avoid shadowing\nvar has = __webpack_require__(/*! lodash/has */ \"b055\");\nvar result = __webpack_require__(/*! lodash/result */ \"80c9\");\nvar union = __webpack_require__(/*! lodash/union */ \"c80f\");\nvar Events = __webpack_require__(/*! ampersand-events */ \"13c2\");\nvar KeyTree = __webpack_require__(/*! key-tree-store */ \"8849\");\nvar arrayNext = __webpack_require__(/*! array-next */ \"d1bb\");\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n options || (options = {});\n this.cid || (this.cid = uniqueId('state'));\n this._events = {};\n this._values = {};\n this._eventBubblingHandlerCache = {};\n this._definition = Object.create(this._definition);\n if (options.parse) attrs = this.parse(attrs, options);\n this.parent = options.parent;\n this.collection = options.collection;\n this._keyTree = new KeyTree();\n this._initCollections();\n this._initChildren();\n this._cache = {};\n this._previousAttributes = {};\n if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n this._changed = {};\n if (this._derived) this._initDerived();\n if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n // can be allow, ignore, reject\n extraProperties: 'ignore',\n\n idAttribute: 'id',\n\n namespaceAttribute: 'namespace',\n\n typeAttribute: 'modelType',\n\n // Stubbed out to be overwritten\n initialize: function () {\n return this;\n },\n\n // Get ID of model per configuration.\n // Should *always* be how ID is determined by other code.\n getId: function () {\n return this[this.idAttribute];\n },\n\n // Get namespace of model per configuration.\n // Should *always* be how namespace is determined by other code.\n getNamespace: function () {\n return this[this.namespaceAttribute];\n },\n\n // Get type of model per configuration.\n // Should *always* be how type is determined by other code.\n getType: function () {\n return this[this.typeAttribute];\n },\n\n // A model is new if it has never been saved to the server, and lacks an id.\n isNew: function () {\n return this.getId() == null;\n },\n\n // get HTML-escaped value of attribute\n escape: function (attr) {\n return escape(this.get(attr));\n },\n\n // Check if the model is currently in a valid state.\n isValid: function (options) {\n return this._validate({}, assign(options || {}, { validate: true }));\n },\n\n // Parse can be used remap/restructure/rename incoming properties\n // before they are applied to attributes.\n parse: function (resp, options) {\n //jshint unused:false\n return resp;\n },\n\n // Serialize is the inverse of `parse` it lets you massage data\n // on the way out. Before, sending to server, for example.\n serialize: function (options) {\n var attrOpts = assign({props: true}, options);\n var res = this.getAttributes(attrOpts, true);\n \n var setFromSerializedValue = function (value, key) {\n\t res[key] = this[key].serialize();\n }.bind(this);\n \n forOwn(this._children, setFromSerializedValue);\n forOwn(this._collections, setFromSerializedValue);\n return res;\n },\n\n // Main set method used by generated setters/getters and can\n // be used directly if you need to pass options or set multiple\n // properties at once.\n set: function (key, value, options) {\n var self = this;\n var extraProperties = this.extraProperties;\n var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n // Handle both `\"key\", value` and `{key: value}` -style arguments.\n if (isObject(key) || key === null) {\n attrs = key;\n options = value;\n } else {\n attrs = {};\n attrs[key] = value;\n }\n\n options = options || {};\n\n if (!this._validate(attrs, options)) return false;\n\n // Extract attributes and options.\n unset = options.unset;\n silent = options.silent;\n initial = options.initial;\n\n // Initialize change tracking.\n wasChanging = this._changing;\n this._changing = true;\n changeEvents = [];\n\n // if not already changing, store previous\n if (initial) {\n this._previousAttributes = {};\n } else if (!wasChanging) {\n this._previousAttributes = this.attributes;\n this._changed = {};\n }\n\n // For each `set` attribute...\n for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n attr = keys[i];\n newVal = attrs[attr];\n newType = typeof newVal;\n currentVal = this._values[attr];\n def = this._definition[attr];\n\n if (!def) {\n // if this is a child model or collection\n if (this._children[attr] || this._collections[attr]) {\n if (!isObject(newVal)) {\n newVal = {};\n }\n\n this[attr].set(newVal, options);\n continue;\n } else if (extraProperties === 'ignore') {\n continue;\n } else if (extraProperties === 'reject') {\n throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n } else if (extraProperties === 'allow') {\n def = this._createPropertyDefinition(attr, 'any');\n } else if (extraProperties) {\n throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n }\n }\n\n isEqual = this._getCompareForType(def.type);\n onChange = this._getOnChangeForType(def.type);\n dataType = this._dataTypes[def.type];\n\n // check type if we have one\n if (dataType && dataType.set) {\n cast = dataType.set(newVal);\n newVal = cast.val;\n newType = cast.type;\n }\n\n // If we've defined a test, run it\n if (def.test) {\n err = def.test.call(this, newVal, newType);\n if (err) {\n throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n }\n }\n\n // If we are required but undefined, throw error.\n // If we are null and are not allowing null, throw error\n // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n if (newVal === undefined && def.required) {\n throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (newVal === null && def.required && !def.allowNull) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n }\n if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n }\n if (def.values && !includes(def.values, newVal)) {\n var defaultValue = result(def, 'default');\n if (unset && defaultValue !== undefined) {\n newVal = defaultValue;\n } else if (!unset || (unset && newVal !== undefined)) {\n throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n }\n }\n\n // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n // enforce `setOnce` for properties if set\n if (def.setOnce && currentVal !== undefined && hasChanged) {\n throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n }\n\n // set/unset attributes.\n // If this is not the initial set, keep track of changed attributes\n // and push to changeEvents array so we can fire events.\n if (hasChanged) {\n\n // This fires no matter what, even on initial set.\n onChange(newVal, currentVal, attr);\n\n // If this is a change (not an initial set), mark the change.\n // Note it's impossible to unset on the initial set (it will already be unset),\n // so we only include that logic here.\n if (!initial) {\n this._changed[attr] = newVal;\n this._previousAttributes[attr] = currentVal;\n if (unset) {\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._values[attr];\n }\n if (!silent) {\n changeEvents.push({prev: currentVal, val: newVal, key: attr});\n }\n }\n if (!unset) {\n this._values[attr] = newVal;\n }\n } else {\n // Not changed\n // FIXME delete is very slow. Can we get away with setting to undefined?\n delete this._changed[attr];\n }\n }\n\n // Fire events. This array is not populated if we are told to be silent.\n if (changeEvents.length) this._pending = true;\n changeEvents.forEach(function (change) {\n self.trigger('change:' + change.key, self, change.val, options);\n });\n\n // You might be wondering why there's a `while` loop here. Changes can\n // be recursively nested within `\"change\"` events.\n if (wasChanging) return this;\n while (this._pending) {\n this._pending = false;\n this.trigger('change', this, options);\n }\n this._pending = false;\n this._changing = false;\n return this;\n },\n\n get: function (attr) {\n return this[attr];\n },\n\n // Toggle boolean properties or properties that have a `values`\n // array in its definition.\n toggle: function (property) {\n var def = this._definition[property];\n if (def.type === 'boolean') {\n // if it's a bool, just flip it\n this[property] = !this[property];\n } else if (def && def.values) {\n // If it's a property with an array of values\n // skip to the next one looping back if at end.\n this[property] = arrayNext(def.values, this[property]);\n } else {\n throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n }\n return this;\n },\n\n // Get all of the attributes of the model at the time of the previous\n // `\"change\"` event.\n previousAttributes: function () {\n return cloneObj(this._previousAttributes);\n },\n\n // Determine if the model has changed since the last `\"change\"` event.\n // If you specify an attribute name, determine if that attribute has changed.\n hasChanged: function (attr) {\n if (attr == null) return !!Object.keys(this._changed).length;\n if (has(this._derived, attr)) {\n return this._derived[attr].depList.some(function (dep) {\n return this.hasChanged(dep);\n }, this);\n }\n return has(this._changed, attr);\n },\n\n // Return an object containing all the attributes that have changed, or\n // false if there are no changed attributes. Useful for determining what\n // parts of a view need to be updated and/or what attributes need to be\n // persisted to the server. Unset attributes will be set to undefined.\n // You can also pass an attributes object to diff against the model,\n // determining if there *would be* a change.\n changedAttributes: function (diff) {\n if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n var val, changed = false;\n var old = this._changing ? this._previousAttributes : this.attributes;\n var def, isEqual;\n for (var attr in diff) {\n def = this._definition[attr];\n if (!def) continue;\n isEqual = this._getCompareForType(def.type);\n if (isEqual(old[attr], (val = diff[attr]))) continue;\n (changed || (changed = {}))[attr] = val;\n }\n return changed;\n },\n\n toJSON: function () {\n return this.serialize();\n },\n\n unset: function (attrs, options) {\n var self = this;\n attrs = Array.isArray(attrs) ? attrs : [attrs];\n attrs.forEach(function (key) {\n var def = self._definition[key];\n if (!def) return;\n var val;\n if (def.required) {\n val = result(def, 'default');\n return self.set(key, val, options);\n } else {\n return self.set(key, val, assign({}, options, {unset: true}));\n }\n });\n },\n\n clear: function (options) {\n var self = this;\n Object.keys(this.attributes).forEach(function (key) {\n self.unset(key, options);\n });\n return this;\n },\n\n previous: function (attr) {\n if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n return this._previousAttributes[attr];\n },\n\n // Get default values for a certain type\n _getDefaultForType: function (type) {\n var dataType = this._dataTypes[type];\n return dataType && dataType['default'];\n },\n\n // Determine which comparison algorithm to use for comparing a property\n _getCompareForType: function (type) {\n var dataType = this._dataTypes[type];\n if (dataType && dataType.compare) return dataType.compare.bind(this);\n return _isEqual; // if no compare function is defined, use _.isEqual\n },\n\n _getOnChangeForType : function(type){\n var dataType = this._dataTypes[type];\n if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n return noop;\n },\n\n // Run validation against the next complete set of model attributes,\n // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n _validate: function (attrs, options) {\n if (!options.validate || !this.validate) return true;\n attrs = assign({}, this.attributes, attrs);\n var error = this.validationError = this.validate(attrs, options) || null;\n if (!error) return true;\n this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n return false;\n },\n\n _createPropertyDefinition: function (name, desc, isSession) {\n return createPropertyDefinition(this, name, desc, isSession);\n },\n\n // just makes friendlier errors when trying to define a new model\n // only used when setting up original property definitions\n _ensureValidType: function (type) {\n return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n },\n\n getAttributes: function (options, raw) {\n options = assign({\n session: false,\n props: false,\n derived: false\n }, options || {});\n var res = {};\n var val, def;\n for (var item in this._definition) {\n def = this._definition[item];\n if ((options.session && def.session) || (options.props && !def.session)) {\n val = raw ? this._values[item] : this[item];\n if (raw && val && isFunction(val.serialize)) val = val.serialize();\n if (typeof val === 'undefined') val = result(def, 'default');\n if (typeof val !== 'undefined') res[item] = val;\n }\n }\n if (options.derived) {\n for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n }\n return res;\n },\n\n _initDerived: function () {\n var self = this;\n\n forOwn(this._derived, function (value, name) {\n var def = self._derived[name];\n def.deps = def.depList;\n\n var update = function () {\n var newVal = def.fn.call(self);\n\n if (self._cache[name] !== newVal || !def.cache) {\n if (def.cache) {\n self._previousAttributes[name] = self._cache[name];\n }\n self._cache[name] = newVal;\n self.trigger('change:' + name, self, self._cache[name]);\n }\n };\n\n def.deps.forEach(function (propString) {\n self._keyTree.add(propString, update);\n });\n });\n\n this.on('all', function (eventName) {\n if (changeRE.test(eventName)) {\n self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n fn();\n });\n }\n }, this);\n },\n\n _getDerivedProperty: function (name, flushCache) {\n // is this a derived property that is cached\n if (this._derived[name].cache) {\n //set if this is the first time, or flushCache is set\n if (flushCache || !this._cache.hasOwnProperty(name)) {\n this._cache[name] = this._derived[name].fn.apply(this);\n }\n return this._cache[name];\n } else {\n return this._derived[name].fn.apply(this);\n }\n },\n\n _initCollections: function () {\n var coll;\n if (!this._collections) return;\n for (coll in this._collections) {\n this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n }\n },\n\n _initChildren: function () {\n var child;\n if (!this._children) return;\n for (child in this._children) {\n this._safeSet(child, new this._children[child]({}, {parent: this}));\n this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n }\n },\n\n // Returns a bound handler for doing event bubbling while\n // adding a name to the change string.\n _getCachedEventBubblingHandler: function (propertyName) {\n if (!this._eventBubblingHandlerCache[propertyName]) {\n this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n if (changeRE.test(name)) {\n this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n } else if (name === 'change') {\n this.trigger('change', this);\n }\n }.bind(this);\n }\n return this._eventBubblingHandlerCache[propertyName];\n },\n\n // Check that all required attributes are present\n _verifyRequired: function () {\n var attrs = this.attributes; // should include session\n for (var def in this._definition) {\n if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n return false;\n }\n }\n return true;\n },\n\n // expose safeSet method\n _safeSet: function safeSet(property, value) {\n if (property in this) {\n throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n }\n this[property] = value;\n return this;\n }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n attributes: {\n get: function () {\n return this.getAttributes({props: true, session: true});\n }\n },\n all: {\n get: function () {\n return this.getAttributes({\n session: true,\n props: true,\n derived: true\n });\n }\n },\n isState: {\n get: function () { return true; },\n set: function () { }\n }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n var def = object._definition[name] = {};\n var type, descArray;\n\n if (isString(desc)) {\n // grab our type if all we've got is a string\n type = object._ensureValidType(desc);\n if (type) def.type = type;\n } else {\n //Transform array of ['type', required, default] to object form\n if (Array.isArray(desc)) {\n descArray = desc;\n desc = {\n type: descArray[0],\n required: descArray[1],\n 'default': descArray[2]\n };\n }\n\n type = object._ensureValidType(desc.type);\n if (type) def.type = type;\n\n if (desc.required) def.required = true;\n\n if (desc['default'] && typeof desc['default'] === 'object') {\n throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n }\n\n def['default'] = desc['default'];\n\n def.allowNull = desc.allowNull ? desc.allowNull : false;\n if (desc.setOnce) def.setOnce = true;\n if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n def.test = desc.test;\n def.values = desc.values;\n }\n if (isSession) def.session = true;\n\n if (!type) {\n type = isString(desc) ? desc : desc.type;\n // TODO: start throwing a TypeError in future major versions instead of warning\n console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n }\n\n // define a getter/setter on the prototype\n // but they get/set on the instance\n Object.defineProperty(object, name, {\n set: function (val) {\n this.set(name, val);\n },\n get: function () {\n if (!this._values) {\n throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n }\n var value = this._values[name];\n var typeDef = this._dataTypes[def.type];\n if (typeof value !== 'undefined') {\n if (typeDef && typeDef.get) {\n value = typeDef.get(value);\n }\n return value;\n }\n var defaultValue = result(def, 'default');\n this._values[name] = defaultValue;\n // If we've set a defaultValue, fire a change handler effectively marking\n // its change from undefined to the default value.\n if (typeof defaultValue !== 'undefined') {\n var onChange = this._getOnChangeForType(def.type);\n onChange(defaultValue, value, name);\n }\n return defaultValue;\n }\n });\n\n return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n var def = modelProto._derived[name] = {\n fn: isFunction(definition) ? definition : definition.fn,\n cache: (definition.cache !== false),\n depList: definition.deps || []\n };\n\n // add to our shared dependency list\n def.depList.forEach(function (dep) {\n modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n });\n\n // defined a top-level getter for derived names\n Object.defineProperty(modelProto, name, {\n get: function () {\n return this._getDerivedProperty(name);\n },\n set: function () {\n throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n }\n });\n}\n\nvar dataTypes = {\n string: {\n 'default': function () {\n return '';\n }\n },\n date: {\n set: function (newVal) {\n var newType;\n if (newVal == null) {\n newType = typeof null;\n } else if (!isDate(newVal)) {\n var err = null;\n var dateVal = new Date(newVal).valueOf();\n if (isNaN(dateVal)) {\n // If the newVal cant be parsed, then try parseInt first\n dateVal = new Date(parseInt(newVal, 10)).valueOf();\n if (isNaN(dateVal)) err = true;\n }\n newVal = dateVal;\n newType = 'date';\n if (err) {\n newType = typeof newVal;\n }\n } else {\n newType = 'date';\n newVal = newVal.valueOf();\n }\n\n return {\n val: newVal,\n type: newType\n };\n },\n get: function (val) {\n if (val == null) { return val; }\n return new Date(val);\n },\n 'default': function () {\n return new Date();\n }\n },\n array: {\n set: function (newVal) {\n return {\n val: newVal,\n type: Array.isArray(newVal) ? 'array' : typeof newVal\n };\n },\n 'default': function () {\n return [];\n }\n },\n object: {\n set: function (newVal) {\n var newType = typeof newVal;\n // we have to have a way of supporting \"missing\" objects.\n // Null is an object, but setting a value to undefined\n // should work too, IMO. We just override it, in that case.\n if (newType !== 'object' && newVal === undefined) {\n newVal = null;\n newType = 'object';\n }\n return {\n val: newVal,\n type: newType\n };\n },\n 'default': function () {\n return {};\n }\n },\n // the `state` data type is a bit special in that setting it should\n // also bubble events\n state: {\n set: function (newVal) {\n var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n if (isInstance) {\n return {\n val: newVal,\n type: 'state'\n };\n } else {\n return {\n val: newVal,\n type: typeof newVal\n };\n }\n },\n compare: function (currentVal, newVal) {\n return currentVal === newVal;\n },\n\n onChange : function(newVal, previousVal, attributeName){\n // if this has changed we want to also handle\n // event propagation\n if (previousVal) {\n this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n\n if (newVal != null) {\n this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n }\n }\n }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n /*jshint validthis:true*/\n var parent = this;\n var child;\n\n // The constructor function for the new subclass is either defined by you\n // (the \"constructor\" property in your `extend` definition), or defaulted\n // by us to simply call the parent's constructor.\n if (protoProps && protoProps.hasOwnProperty('constructor')) {\n child = protoProps.constructor;\n } else {\n child = function () {\n return parent.apply(this, arguments);\n };\n }\n\n // Add static properties to the constructor function from parent\n assign(child, parent);\n\n // Set the prototype chain to inherit from `parent`, without calling\n // `parent`'s constructor function.\n var Surrogate = function () { this.constructor = child; };\n Surrogate.prototype = parent.prototype;\n child.prototype = new Surrogate();\n\n // set prototype level objects\n child.prototype._derived = assign({}, parent.prototype._derived);\n child.prototype._deps = assign({}, parent.prototype._deps);\n child.prototype._definition = assign({}, parent.prototype._definition);\n child.prototype._collections = assign({}, parent.prototype._collections);\n child.prototype._children = assign({}, parent.prototype._children);\n child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n // Mix in all prototype properties to the subclass if supplied.\n if (protoProps) {\n var omitFromExtend = [\n 'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n ];\n for(var i = 0; i < arguments.length; i++) {\n var def = arguments[i];\n if (def.dataTypes) {\n forOwn(def.dataTypes, function (def, name) {\n child.prototype._dataTypes[name] = def;\n });\n }\n if (def.props) {\n forOwn(def.props, function (def, name) {\n createPropertyDefinition(child.prototype, name, def);\n });\n }\n if (def.session) {\n forOwn(def.session, function (def, name) {\n createPropertyDefinition(child.prototype, name, def, true);\n });\n }\n if (def.derived) {\n forOwn(def.derived, function (def, name) {\n createDerivedProperty(child.prototype, name, def);\n });\n }\n if (def.collections) {\n forOwn(def.collections, function (constructor, name) {\n child.prototype._collections[name] = constructor;\n });\n }\n if (def.children) {\n forOwn(def.children, function (constructor, name) {\n child.prototype._children[name] = constructor;\n });\n }\n assign(child.prototype, omit(def, omitFromExtend));\n }\n }\n\n // Set a convenience property in case the parent's prototype is needed\n // later.\n child.__super__ = parent.prototype;\n\n return child;\n}\n\nBase.extend = extend;\n\n// Our main exports\nmodule.exports = Base;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"ef45.js","sources":["webpack:///./node_modules/ampersand-state/ampersand-state.js?63d4"],"sourcesContent":["'use strict';\n/*$AMPERSAND_VERSION*/\nvar uniqueId = require('lodash/uniqueId');\nvar assign = require('lodash/assign');\nvar cloneObj = function(obj) { return assign({}, obj); };\nvar omit = require('lodash/omit');\nvar escape = require('lodash/escape');\nvar forOwn = require('lodash/forOwn');\nvar includes = require('lodash/includes');\nvar isString = require('lodash/isString');\nvar isObject = require('lodash/isObject');\nvar isDate = require('lodash/isDate');\nvar isFunction = require('lodash/isFunction');\nvar _isEqual = require('lodash/isEqual'); // to avoid shadowing\nvar has = require('lodash/has');\nvar result = require('lodash/result');\nvar union = require('lodash/union');\nvar Events = require('ampersand-events');\nvar KeyTree = require('key-tree-store');\nvar arrayNext = require('array-next');\nvar changeRE = /^change:/;\nvar noop = function () {};\n\nfunction Base(attrs, options) {\n    options || (options = {});\n    this.cid || (this.cid = uniqueId('state'));\n    this._events = {};\n    this._values = {};\n    this._eventBubblingHandlerCache = {};\n    this._definition = Object.create(this._definition);\n    if (options.parse) attrs = this.parse(attrs, options);\n    this.parent = options.parent;\n    this.collection = options.collection;\n    this._keyTree = new KeyTree();\n    this._initCollections();\n    this._initChildren();\n    this._cache = {};\n    this._previousAttributes = {};\n    if (attrs) this.set(attrs, assign({silent: true, initial: true}, options));\n    this._changed = {};\n    if (this._derived) this._initDerived();\n    if (options.init !== false) this.initialize.apply(this, arguments);\n}\n\nassign(Base.prototype, Events, {\n    // can be allow, ignore, reject\n    extraProperties: 'ignore',\n\n    idAttribute: 'id',\n\n    namespaceAttribute: 'namespace',\n\n    typeAttribute: 'modelType',\n\n    // Stubbed out to be overwritten\n    initialize: function () {\n        return this;\n    },\n\n    // Get ID of model per configuration.\n    // Should *always* be how ID is determined by other code.\n    getId: function () {\n        return this[this.idAttribute];\n    },\n\n    // Get namespace of model per configuration.\n    // Should *always* be how namespace is determined by other code.\n    getNamespace: function () {\n        return this[this.namespaceAttribute];\n    },\n\n    // Get type of model per configuration.\n    // Should *always* be how type is determined by other code.\n    getType: function () {\n        return this[this.typeAttribute];\n    },\n\n    // A model is new if it has never been saved to the server, and lacks an id.\n    isNew: function () {\n        return this.getId() == null;\n    },\n\n    // get HTML-escaped value of attribute\n    escape: function (attr) {\n        return escape(this.get(attr));\n    },\n\n    // Check if the model is currently in a valid state.\n    isValid: function (options) {\n        return this._validate({}, assign(options || {}, { validate: true }));\n    },\n\n    // Parse can be used remap/restructure/rename incoming properties\n    // before they are applied to attributes.\n    parse: function (resp, options) {\n        //jshint unused:false\n        return resp;\n    },\n\n    // Serialize is the inverse of `parse` it lets you massage data\n    // on the way out. Before, sending to server, for example.\n    serialize: function (options) {\n        var attrOpts = assign({props: true}, options);\n        var res = this.getAttributes(attrOpts, true);\n        \n        var setFromSerializedValue = function (value, key) {\n\t        res[key] = this[key].serialize();\n        }.bind(this);\n        \n        forOwn(this._children, setFromSerializedValue);\n        forOwn(this._collections, setFromSerializedValue);\n        return res;\n    },\n\n    // Main set method used by generated setters/getters and can\n    // be used directly if you need to pass options or set multiple\n    // properties at once.\n    set: function (key, value, options) {\n        var self = this;\n        var extraProperties = this.extraProperties;\n        var wasChanging, changeEvents, newType, newVal, def, cast, err, attr,\n            attrs, dataType, silent, unset, currentVal, initial, hasChanged, isEqual, onChange;\n\n        // Handle both `\"key\", value` and `{key: value}` -style arguments.\n        if (isObject(key) || key === null) {\n            attrs = key;\n            options = value;\n        } else {\n            attrs = {};\n            attrs[key] = value;\n        }\n\n        options = options || {};\n\n        if (!this._validate(attrs, options)) return false;\n\n        // Extract attributes and options.\n        unset = options.unset;\n        silent = options.silent;\n        initial = options.initial;\n\n        // Initialize change tracking.\n        wasChanging = this._changing;\n        this._changing = true;\n        changeEvents = [];\n\n        // if not already changing, store previous\n        if (initial) {\n            this._previousAttributes = {};\n        } else if (!wasChanging) {\n            this._previousAttributes = this.attributes;\n            this._changed = {};\n        }\n\n        // For each `set` attribute...\n        for (var i = 0, keys = Object.keys(attrs), len = keys.length; i < len; i++) {\n            attr = keys[i];\n            newVal = attrs[attr];\n            newType = typeof newVal;\n            currentVal = this._values[attr];\n            def = this._definition[attr];\n\n            if (!def) {\n                // if this is a child model or collection\n                if (this._children[attr] || this._collections[attr]) {\n                    if (!isObject(newVal)) {\n                        newVal = {};\n                    }\n\n                    this[attr].set(newVal, options);\n                    continue;\n                } else if (extraProperties === 'ignore') {\n                    continue;\n                } else if (extraProperties === 'reject') {\n                    throw new TypeError('No \"' + attr + '\" property defined on ' + (this.type || 'this') + ' model and extraProperties not set to \"ignore\" or \"allow\"');\n                } else if (extraProperties === 'allow') {\n                    def = this._createPropertyDefinition(attr, 'any');\n                } else if (extraProperties) {\n                    throw new TypeError('Invalid value for extraProperties: \"' + extraProperties + '\"');\n                }\n            }\n\n            isEqual = this._getCompareForType(def.type);\n            onChange = this._getOnChangeForType(def.type);\n            dataType = this._dataTypes[def.type];\n\n            // check type if we have one\n            if (dataType && dataType.set) {\n                cast = dataType.set(newVal);\n                newVal = cast.val;\n                newType = cast.type;\n            }\n\n            // If we've defined a test, run it\n            if (def.test) {\n                err = def.test.call(this, newVal, newType);\n                if (err) {\n                    throw new TypeError('Property \\'' + attr + '\\' failed validation with error: ' + err);\n                }\n            }\n\n            // If we are required but undefined, throw error.\n            // If we are null and are not allowing null, throw error\n            // If we have a defined type and the new type doesn't match, and we are not null, throw error.\n            // If we require specific value and new one is not one of them, throw error (unless it has default value or we're unsetting it with undefined).\n\n            if (newVal === undefined && def.required) {\n                throw new TypeError('Required property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (newVal === null && def.required && !def.allowNull) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + ' (cannot be null). Tried to set ' + newVal);\n            }\n            if ((def.type && def.type !== 'any' && def.type !== newType) && newVal !== null && newVal !== undefined) {\n                throw new TypeError('Property \\'' + attr + '\\' must be of type ' + def.type + '. Tried to set ' + newVal);\n            }\n            if (def.values && !includes(def.values, newVal)) {\n                var defaultValue = result(def, 'default');\n                if (unset && defaultValue !== undefined) {\n                    newVal = defaultValue;\n                } else if (!unset || (unset && newVal !== undefined)) {\n                    throw new TypeError('Property \\'' + attr + '\\' must be one of values: ' + def.values.join(', ') + '. Tried to set ' + newVal);\n                }\n            }\n\n            // We know this has 'changed' if it's the initial set, so skip a potentially expensive isEqual check.\n            hasChanged = initial || !isEqual(currentVal, newVal, attr);\n\n            // enforce `setOnce` for properties if set\n            if (def.setOnce && currentVal !== undefined && hasChanged) {\n                throw new TypeError('Property \\'' + attr + '\\' can only be set once.');\n            }\n\n            // set/unset attributes.\n            // If this is not the initial set, keep track of changed attributes\n            // and push to changeEvents array so we can fire events.\n            if (hasChanged) {\n\n                // This fires no matter what, even on initial set.\n                onChange(newVal, currentVal, attr);\n\n                // If this is a change (not an initial set), mark the change.\n                // Note it's impossible to unset on the initial set (it will already be unset),\n                // so we only include that logic here.\n                if (!initial) {\n                    this._changed[attr] = newVal;\n                    this._previousAttributes[attr] = currentVal;\n                    if (unset) {\n                        // FIXME delete is very slow. Can we get away with setting to undefined?\n                        delete this._values[attr];\n                    }\n                    if (!silent) {\n                        changeEvents.push({prev: currentVal, val: newVal, key: attr});\n                    }\n                }\n                if (!unset) {\n                    this._values[attr] = newVal;\n                }\n            } else {\n                // Not changed\n                // FIXME delete is very slow. Can we get away with setting to undefined?\n                delete this._changed[attr];\n            }\n        }\n\n        // Fire events. This array is not populated if we are told to be silent.\n        if (changeEvents.length) this._pending = true;\n        changeEvents.forEach(function (change) {\n            self.trigger('change:' + change.key, self, change.val, options);\n        });\n\n        // You might be wondering why there's a `while` loop here. Changes can\n        // be recursively nested within `\"change\"` events.\n        if (wasChanging) return this;\n        while (this._pending) {\n            this._pending = false;\n            this.trigger('change', this, options);\n        }\n        this._pending = false;\n        this._changing = false;\n        return this;\n    },\n\n    get: function (attr) {\n        return this[attr];\n    },\n\n    // Toggle boolean properties or properties that have a `values`\n    // array in its definition.\n    toggle: function (property) {\n        var def = this._definition[property];\n        if (def.type === 'boolean') {\n            // if it's a bool, just flip it\n            this[property] = !this[property];\n        } else if (def && def.values) {\n            // If it's a property with an array of values\n            // skip to the next one looping back if at end.\n            this[property] = arrayNext(def.values, this[property]);\n        } else {\n            throw new TypeError('Can only toggle properties that are type `boolean` or have `values` array.');\n        }\n        return this;\n    },\n\n    // Get all of the attributes of the model at the time of the previous\n    // `\"change\"` event.\n    previousAttributes: function () {\n        return cloneObj(this._previousAttributes);\n    },\n\n    // Determine if the model has changed since the last `\"change\"` event.\n    // If you specify an attribute name, determine if that attribute has changed.\n    hasChanged: function (attr) {\n        if (attr == null) return !!Object.keys(this._changed).length;\n        if (has(this._derived, attr)) {\n            return this._derived[attr].depList.some(function (dep) {\n                return this.hasChanged(dep);\n            }, this);\n        }\n        return has(this._changed, attr);\n    },\n\n    // Return an object containing all the attributes that have changed, or\n    // false if there are no changed attributes. Useful for determining what\n    // parts of a view need to be updated and/or what attributes need to be\n    // persisted to the server. Unset attributes will be set to undefined.\n    // You can also pass an attributes object to diff against the model,\n    // determining if there *would be* a change.\n    changedAttributes: function (diff) {\n        if (!diff) return this.hasChanged() ? cloneObj(this._changed) : false;\n        var val, changed = false;\n        var old = this._changing ? this._previousAttributes : this.attributes;\n        var def, isEqual;\n        for (var attr in diff) {\n            def = this._definition[attr];\n            if (!def) continue;\n            isEqual = this._getCompareForType(def.type);\n            if (isEqual(old[attr], (val = diff[attr]))) continue;\n            (changed || (changed = {}))[attr] = val;\n        }\n        return changed;\n    },\n\n    toJSON: function () {\n        return this.serialize();\n    },\n\n    unset: function (attrs, options) {\n        var self = this;\n        attrs = Array.isArray(attrs) ? attrs : [attrs];\n        attrs.forEach(function (key) {\n            var def = self._definition[key];\n            if (!def) return;\n            var val;\n            if (def.required) {\n                val = result(def, 'default');\n                return self.set(key, val, options);\n            } else {\n                return self.set(key, val, assign({}, options, {unset: true}));\n            }\n        });\n    },\n\n    clear: function (options) {\n        var self = this;\n        Object.keys(this.attributes).forEach(function (key) {\n            self.unset(key, options);\n        });\n        return this;\n    },\n\n    previous: function (attr) {\n        if (attr == null || !Object.keys(this._previousAttributes).length) return null;\n        return this._previousAttributes[attr];\n    },\n\n    // Get default values for a certain type\n    _getDefaultForType: function (type) {\n        var dataType = this._dataTypes[type];\n        return dataType && dataType['default'];\n    },\n\n    // Determine which comparison algorithm to use for comparing a property\n    _getCompareForType: function (type) {\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.compare) return dataType.compare.bind(this);\n        return _isEqual; // if no compare function is defined, use _.isEqual\n    },\n\n    _getOnChangeForType : function(type){\n        var dataType = this._dataTypes[type];\n        if (dataType && dataType.onChange) return dataType.onChange.bind(this);\n        return noop;\n    },\n\n    // Run validation against the next complete set of model attributes,\n    // returning `true` if all is well. Otherwise, fire an `\"invalid\"` event.\n    _validate: function (attrs, options) {\n        if (!options.validate || !this.validate) return true;\n        attrs = assign({}, this.attributes, attrs);\n        var error = this.validationError = this.validate(attrs, options) || null;\n        if (!error) return true;\n        this.trigger('invalid', this, error, assign(options || {}, {validationError: error}));\n        return false;\n    },\n\n    _createPropertyDefinition: function (name, desc, isSession) {\n        return createPropertyDefinition(this, name, desc, isSession);\n    },\n\n    // just makes friendlier errors when trying to define a new model\n    // only used when setting up original property definitions\n    _ensureValidType: function (type) {\n        return includes(['string', 'number', 'boolean', 'array', 'object', 'date', 'state', 'any']\n            .concat(Object.keys(this._dataTypes)), type) ? type : undefined;\n    },\n\n    getAttributes: function (options, raw) {\n        options = assign({\n            session: false,\n            props: false,\n            derived: false\n        }, options || {});\n        var res = {};\n        var val, def;\n        for (var item in this._definition) {\n            def = this._definition[item];\n            if ((options.session && def.session) || (options.props && !def.session)) {\n                val = raw ? this._values[item] : this[item];\n                if (raw && val && isFunction(val.serialize)) val = val.serialize();\n                if (typeof val === 'undefined') val = result(def, 'default');\n                if (typeof val !== 'undefined') res[item] = val;\n            }\n        }\n        if (options.derived) {\n            for (var derivedItem in this._derived) res[derivedItem] = this[derivedItem];\n        }\n        return res;\n    },\n\n    _initDerived: function () {\n        var self = this;\n\n        forOwn(this._derived, function (value, name) {\n            var def = self._derived[name];\n            def.deps = def.depList;\n\n            var update = function () {\n                var newVal = def.fn.call(self);\n\n                if (self._cache[name] !== newVal || !def.cache) {\n                    if (def.cache) {\n                        self._previousAttributes[name] = self._cache[name];\n                    }\n                    self._cache[name] = newVal;\n                    self.trigger('change:' + name, self, self._cache[name]);\n                }\n            };\n\n            def.deps.forEach(function (propString) {\n                self._keyTree.add(propString, update);\n            });\n        });\n\n        this.on('all', function (eventName) {\n            if (changeRE.test(eventName)) {\n                self._keyTree.get(eventName.split(':')[1]).forEach(function (fn) {\n                    fn();\n                });\n            }\n        }, this);\n    },\n\n    _getDerivedProperty: function (name, flushCache) {\n        // is this a derived property that is cached\n        if (this._derived[name].cache) {\n            //set if this is the first time, or flushCache is set\n            if (flushCache || !this._cache.hasOwnProperty(name)) {\n                this._cache[name] = this._derived[name].fn.apply(this);\n            }\n            return this._cache[name];\n        } else {\n            return this._derived[name].fn.apply(this);\n        }\n    },\n\n    _initCollections: function () {\n        var coll;\n        if (!this._collections) return;\n        for (coll in this._collections) {\n            this._safeSet(coll, new this._collections[coll](null, {parent: this}));\n        }\n    },\n\n    _initChildren: function () {\n        var child;\n        if (!this._children) return;\n        for (child in this._children) {\n            this._safeSet(child, new this._children[child]({}, {parent: this}));\n            this.listenTo(this[child], 'all', this._getCachedEventBubblingHandler(child));\n        }\n    },\n\n    // Returns a bound handler for doing event bubbling while\n    // adding a name to the change string.\n    _getCachedEventBubblingHandler: function (propertyName) {\n        if (!this._eventBubblingHandlerCache[propertyName]) {\n            this._eventBubblingHandlerCache[propertyName] = function (name, model, newValue) {\n                if (changeRE.test(name)) {\n                    this.trigger('change:' + propertyName + '.' + name.split(':')[1], model, newValue);\n                } else if (name === 'change') {\n                    this.trigger('change', this);\n                }\n            }.bind(this);\n        }\n        return this._eventBubblingHandlerCache[propertyName];\n    },\n\n    // Check that all required attributes are present\n    _verifyRequired: function () {\n        var attrs = this.attributes; // should include session\n        for (var def in this._definition) {\n            if (this._definition[def].required && typeof attrs[def] === 'undefined') {\n                return false;\n            }\n        }\n        return true;\n    },\n\n    // expose safeSet method\n    _safeSet: function safeSet(property, value) {\n        if (property in this) {\n            throw new Error('Encountered namespace collision while setting instance property `' + property + '`');\n        }\n        this[property] = value;\n        return this;\n    }\n});\n\n// getter for attributes\nObject.defineProperties(Base.prototype, {\n    attributes: {\n        get: function () {\n            return this.getAttributes({props: true, session: true});\n        }\n    },\n    all: {\n        get: function () {\n            return this.getAttributes({\n                session: true,\n                props: true,\n                derived: true\n            });\n        }\n    },\n    isState: {\n        get: function () { return true; },\n        set: function () { }\n    }\n});\n\n// helper for creating/storing property definitions and creating\n// appropriate getters/setters\nfunction createPropertyDefinition(object, name, desc, isSession) {\n    var def = object._definition[name] = {};\n    var type, descArray;\n\n    if (isString(desc)) {\n        // grab our type if all we've got is a string\n        type = object._ensureValidType(desc);\n        if (type) def.type = type;\n    } else {\n        //Transform array of ['type', required, default] to object form\n        if (Array.isArray(desc)) {\n            descArray = desc;\n            desc = {\n                type: descArray[0],\n                required: descArray[1],\n                'default': descArray[2]\n            };\n        }\n\n        type = object._ensureValidType(desc.type);\n        if (type) def.type = type;\n\n        if (desc.required) def.required = true;\n\n        if (desc['default'] && typeof desc['default'] === 'object') {\n            throw new TypeError('The default value for ' + name + ' cannot be an object/array, must be a value or a function which returns a value/object/array');\n        }\n\n        def['default'] = desc['default'];\n\n        def.allowNull = desc.allowNull ? desc.allowNull : false;\n        if (desc.setOnce) def.setOnce = true;\n        if (def.required && def['default'] === undefined && !def.setOnce) def['default'] = object._getDefaultForType(type);\n        def.test = desc.test;\n        def.values = desc.values;\n    }\n    if (isSession) def.session = true;\n\n    if (!type) {\n        type = isString(desc) ? desc : desc.type;\n        // TODO: start throwing a TypeError in future major versions instead of warning\n        console.warn('Invalid data type of `' + type + '` for `' + name + '` property. Use one of the default types or define your own');\n    }\n\n    // define a getter/setter on the prototype\n    // but they get/set on the instance\n    Object.defineProperty(object, name, {\n        set: function (val) {\n            this.set(name, val);\n        },\n        get: function () {\n            if (!this._values) {\n                throw Error('You may be trying to `extend` a state object with \"' + name + '\" which has been defined in `props` on the object being extended');\n            }\n            var value = this._values[name];\n            var typeDef = this._dataTypes[def.type];\n            if (typeof value !== 'undefined') {\n                if (typeDef && typeDef.get) {\n                    value = typeDef.get(value);\n                }\n                return value;\n            }\n            var defaultValue = result(def, 'default');\n            this._values[name] = defaultValue;\n            // If we've set a defaultValue, fire a change handler effectively marking\n            // its change from undefined to the default value.\n            if (typeof defaultValue !== 'undefined') {\n                var onChange = this._getOnChangeForType(def.type);\n                onChange(defaultValue, value, name);\n            }\n            return defaultValue;\n        }\n    });\n\n    return def;\n}\n\n// helper for creating derived property definitions\nfunction createDerivedProperty(modelProto, name, definition) {\n    var def = modelProto._derived[name] = {\n        fn: isFunction(definition) ? definition : definition.fn,\n        cache: (definition.cache !== false),\n        depList: definition.deps || []\n    };\n\n    // add to our shared dependency list\n    def.depList.forEach(function (dep) {\n        modelProto._deps[dep] = union(modelProto._deps[dep] || [], [name]);\n    });\n\n    // defined a top-level getter for derived names\n    Object.defineProperty(modelProto, name, {\n        get: function () {\n            return this._getDerivedProperty(name);\n        },\n        set: function () {\n            throw new TypeError(\"`\" + name + \"` is a derived property, it can't be set directly.\");\n        }\n    });\n}\n\nvar dataTypes = {\n    string: {\n        'default': function () {\n            return '';\n        }\n    },\n    date: {\n        set: function (newVal) {\n            var newType;\n            if (newVal == null) {\n                newType = typeof null;\n            } else if (!isDate(newVal)) {\n                var err = null;\n                var dateVal = new Date(newVal).valueOf();\n                if (isNaN(dateVal)) {\n                    // If the newVal cant be parsed, then try parseInt first\n                    dateVal = new Date(parseInt(newVal, 10)).valueOf();\n                    if (isNaN(dateVal)) err = true;\n                }\n                newVal = dateVal;\n                newType = 'date';\n                if (err) {\n                    newType = typeof newVal;\n                }\n            } else {\n                newType = 'date';\n                newVal = newVal.valueOf();\n            }\n\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        get: function (val) {\n            if (val == null) { return val; }\n            return new Date(val);\n        },\n        'default': function () {\n            return new Date();\n        }\n    },\n    array: {\n        set: function (newVal) {\n            return {\n                val: newVal,\n                type: Array.isArray(newVal) ? 'array' : typeof newVal\n            };\n        },\n        'default': function () {\n            return [];\n        }\n    },\n    object: {\n        set: function (newVal) {\n            var newType = typeof newVal;\n            // we have to have a way of supporting \"missing\" objects.\n            // Null is an object, but setting a value to undefined\n            // should work too, IMO. We just override it, in that case.\n            if (newType !== 'object' && newVal === undefined) {\n                newVal = null;\n                newType = 'object';\n            }\n            return {\n                val: newVal,\n                type: newType\n            };\n        },\n        'default': function () {\n            return {};\n        }\n    },\n    // the `state` data type is a bit special in that setting it should\n    // also bubble events\n    state: {\n        set: function (newVal) {\n            var isInstance = newVal instanceof Base || (newVal && newVal.isState);\n            if (isInstance) {\n                return {\n                    val: newVal,\n                    type: 'state'\n                };\n            } else {\n                return {\n                    val: newVal,\n                    type: typeof newVal\n                };\n            }\n        },\n        compare: function (currentVal, newVal) {\n            return currentVal === newVal;\n        },\n\n        onChange : function(newVal, previousVal, attributeName){\n            // if this has changed we want to also handle\n            // event propagation\n            if (previousVal) {\n                this.stopListening(previousVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n\n            if (newVal != null) {\n                this.listenTo(newVal, 'all', this._getCachedEventBubblingHandler(attributeName));\n            }\n        }\n    }\n};\n\n// the extend method used to extend prototypes, maintain inheritance chains for instanceof\n// and allow for additions to the model definitions.\nfunction extend(protoProps) {\n    /*jshint validthis:true*/\n    var parent = this;\n    var child;\n\n    // The constructor function for the new subclass is either defined by you\n    // (the \"constructor\" property in your `extend` definition), or defaulted\n    // by us to simply call the parent's constructor.\n    if (protoProps && protoProps.hasOwnProperty('constructor')) {\n        child = protoProps.constructor;\n    } else {\n        child = function () {\n            return parent.apply(this, arguments);\n        };\n    }\n\n    // Add static properties to the constructor function from parent\n    assign(child, parent);\n\n    // Set the prototype chain to inherit from `parent`, without calling\n    // `parent`'s constructor function.\n    var Surrogate = function () { this.constructor = child; };\n    Surrogate.prototype = parent.prototype;\n    child.prototype = new Surrogate();\n\n    // set prototype level objects\n    child.prototype._derived =  assign({}, parent.prototype._derived);\n    child.prototype._deps = assign({}, parent.prototype._deps);\n    child.prototype._definition = assign({}, parent.prototype._definition);\n    child.prototype._collections = assign({}, parent.prototype._collections);\n    child.prototype._children = assign({}, parent.prototype._children);\n    child.prototype._dataTypes = assign({}, parent.prototype._dataTypes || dataTypes);\n\n    // Mix in all prototype properties to the subclass if supplied.\n    if (protoProps) {\n        var omitFromExtend = [\n            'dataTypes', 'props', 'session', 'derived', 'collections', 'children'\n        ];\n        for(var i = 0; i < arguments.length; i++) {\n            var def = arguments[i];\n            if (def.dataTypes) {\n                forOwn(def.dataTypes, function (def, name) {\n                    child.prototype._dataTypes[name] = def;\n                });\n            }\n            if (def.props) {\n                forOwn(def.props, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def);\n                });\n            }\n            if (def.session) {\n                forOwn(def.session, function (def, name) {\n                    createPropertyDefinition(child.prototype, name, def, true);\n                });\n            }\n     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