From 2c6a7b60b4fa15e3038f4a4b2fe9095d79bcfdfe Mon Sep 17 00:00:00 2001
From: crissdev <criss.trifan@gmail.com>
Date: Thu, 12 Feb 2015 12:32:24 +0200
Subject: [PATCH] 2.5.0

---
 HISTORY.md                       | 24 ++++++++++++++----------
 bower.json                       |  9 +++++----
 dist/knockout.mapping.js         |  2 +-
 dist/knockout.mapping.min.js     |  2 +-
 dist/knockout.mapping.min.js.map |  2 +-
 package.json                     |  4 ++--
 6 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index 16450a4..2ceffc5 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,41 +1,45 @@
-Release 2.4.1 - February 8th, 2013
+## 2.5.0 (2015-02-12)
+
+* Remove deprecated methods (`updateFromJS` and `updateFromJSON`) 
+* Issue #1: Compatibility with Knockout 3.x may still be a problem
+* Issue #4: Library is not exported in ko namespace for CommonJS/Node
+
+## 2.4.1 (2013-02-08) 
 
 * Added mappedGet for observable arrays
 * Issue #134: Throttle issue using mapping
 * Issue #135: Why is custom update for observableArray firing twice when using mapping plugin?
 
-Release 2.4.0 - February 4th, 2013
+## 2.4.0 (2013-02-04)
 
 * Removed asynchronous processing that was used to reset mapping nesting
 * Improved getType performance
 
-Release 2.3.5 - December 10th, 2012
+## 2.3.5 (2012-12-10)
 
 * Issue #121: Added functionality so that explicit declared none observable members on a ViewModel will remain none observable after mapping
 
-Release 2.3.4 - November 22nd, 2012
+## 2.3.4 (2012-11-22)
 
 * Issue #114: Added new "observe" array to options
 
-Release 2.3.3 - October 30th, 2012
+## 2.3.3 (2012-10-30)
 
 * Fixed issue #105, #111: Update callback is not being called
 * Fixed issue #107: String values in mapping cause infinite recursion in extendObject
 
-Release 2.3.2 - August 20th, 2012
+## 2.3.2 (2012-08-20)
 
 * Fixed issue #86: Don't update properties on object with update callback
 
-Release 2.3.1 - August 6th, 2012
+## 2.3.1 (2012-08-06)
 
 * Fixed issue #33: Create method in mappings receive meaningless options.parent for observableArray properties
 * Fixed issue #99: Updating throttled observable
 * Fixed issue #100: private variable leaks onto window object
 
-Release 2.3.0 - July 31st, 2012
+## 2.3.0 (2012-07-31)
 
 * Added support for not mapping certain array elements (return "options.skip" from your create callback)
 * Fixed issue #91: "wrap" function makes computed writable
 * Fixed issue #94: Bug/problem with ignore argument in mapping.fromJS
-
-Release 2.2.4
diff --git a/bower.json b/bower.json
index 2188c01..cadaba9 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
 {
   "name": "bower-knockout-mapping",
-  "main": "knockout.mapping.js",
-  "version": "2.4.1",
+  "main": "dist/knockout.mapping.js",
+  "version": "2.5.0",
   "homepage": "https://github.com/crissdev/knockout.mapping",
   "authors": [
     "Steven Sanderson",
@@ -22,9 +22,10 @@
     "**/.*",
     "node_modules",
     "spec",
-    "gulpfile.js"
+    "gulpfile.js",
+    "knockout.mapping.js"
   ],
   "dependencies": {
-    "knockout": "^3.0.0"
+    "knockout": ">=2.2.0"
   }
 }
diff --git a/dist/knockout.mapping.js b/dist/knockout.mapping.js
index bfb1dde..4377398 100644
--- a/dist/knockout.mapping.js
+++ b/dist/knockout.mapping.js
@@ -1,5 +1,5 @@
 /*!
- * Knockout Mapping plugin v2.4.1
+ * Knockout Mapping plugin v2.5.0
  * (c) 2013 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/
  * License: MIT (http://www.opensource.org/licenses/mit-license.php)
  */
diff --git a/dist/knockout.mapping.min.js b/dist/knockout.mapping.min.js
index 981c53c..7352b4c 100644
--- a/dist/knockout.mapping.min.js
+++ b/dist/knockout.mapping.min.js
@@ -1,5 +1,5 @@
 /*!
- * Knockout Mapping plugin v2.4.1
+ * Knockout Mapping plugin v2.5.0
  * (c) 2013 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/
  * License: MIT (http://www.opensource.org/licenses/mit-license.php)
  */
diff --git a/dist/knockout.mapping.min.js.map b/dist/knockout.mapping.min.js.map
index c925369..3ff33b0 100644
--- a/dist/knockout.mapping.min.js.map
+++ b/dist/knockout.mapping.min.js.map
@@ -1 +1 @@
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* Knockout Mapping plugin v2.4.1\n * (c) 2013 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/\n * License: MIT (http://www.opensource.org/licenses/mit-license.php)\n */\n(function(factory) {\n    'use strict';\n\n    /*jshint sub:true,curly:false*/\n    /*global ko,require,exports,define,module*/\n\n    if (typeof require === \"function\" && typeof exports === \"object\" && typeof module === \"object\") {\n        // CommonJS or Node: hard-coded dependency on \"knockout\"\n        factory(require(\"knockout\"), exports);\n    }\n    else if (typeof define === \"function\" && define[\"amd\"]) {\n        // AMD anonymous module with hard-coded dependency on \"knockout\"\n        define([\"knockout\", \"exports\"], factory);\n    }\n    else {\n        // <script> tag: use the global `ko` object, attaching a `mapping` property\n        if (typeof ko === 'undefined') {\n            throw new Error('Knockout is required, please ensure it is loaded before loading this mapping plug-in');\n        }\n        factory(ko, ko.mapping = {});\n    }\n}(function(ko, exports) {\n    /*jshint sub:true,curly:false*/\n    'use strict';\n\n    ko.mapping = exports;\n\n    const DEBUG=false;\n    var mappingProperty = \"__ko_mapping__\";\n    var realKoDependentObservable = ko.dependentObservable;\n    var mappingNesting = 0;\n    var dependentObservables;\n    var visitedObjects;\n    var recognizedRootProperties = [\"create\", \"update\", \"key\", \"arrayChanged\"];\n    var emptyReturn = {};\n\n    var _defaultOptions = {\n        include: [\"_destroy\"],\n        ignore: [],\n        copy: [],\n        observe: []\n    };\n    var defaultOptions = _defaultOptions;\n\n    function unionArrays() {\n        var args = arguments,\n            l = args.length,\n            obj = {},\n            res = [],\n            i, j, k;\n\n        while (l--) {\n            k = args[l];\n            i = k.length;\n\n            while (i--) {\n                j = k[i];\n                if (!obj[j]) {\n                    obj[j] = 1;\n                    res.push(j);\n                }\n            }\n        }\n\n        return res;\n    }\n\n    function extendObject(destination, source) {\n        var destType;\n\n        for (var key in source) {\n            if (source.hasOwnProperty(key) && source[key]) {\n                destType = exports.getType(destination[key]);\n                if (key && destination[key] && destType !== \"array\" && destType !== \"string\") {\n                    extendObject(destination[key], source[key]);\n                }\n                else {\n                    var bothArrays = exports.getType(destination[key]) === \"array\" && exports.getType(source[key]) === \"array\";\n                    if (bothArrays) {\n                        destination[key] = unionArrays(destination[key], source[key]);\n                    }\n                    else {\n                        destination[key] = source[key];\n                    }\n                }\n            }\n        }\n    }\n\n    function merge(obj1, obj2) {\n        var merged = {};\n        extendObject(merged, obj1);\n        extendObject(merged, obj2);\n\n        return merged;\n    }\n\n    exports.isMapped = function(viewModel) {\n        var unwrapped = ko.utils.unwrapObservable(viewModel);\n        return unwrapped && unwrapped[mappingProperty];\n    };\n\n    exports.fromJS = function(jsObject /*, inputOptions, target*/) {\n        if (arguments.length === 0) {\n            throw new Error(\"When calling ko.fromJS, pass the object you want to convert.\");\n        }\n        try {\n            if (!mappingNesting) {\n                dependentObservables = [];\n                visitedObjects = new ObjectLookup();\n            }\n            mappingNesting++;\n\n            var options;\n            var target;\n\n            if (arguments.length === 2) {\n                if (arguments[1][mappingProperty]) {\n                    target = arguments[1];\n                }\n                else {\n                    options = arguments[1];\n                }\n            }\n            if (arguments.length === 3) {\n                options = arguments[1];\n                target = arguments[2];\n            }\n\n            if (target) {\n                options = merge(options, target[mappingProperty]);\n            }\n            options = fillOptions(options);\n\n            var result = updateViewModel(target, jsObject, options);\n            if (target) {\n                result = target;\n            }\n\n            // Evaluate any dependent observables that were proxied.\n            // Do this after the model's observables have been created\n            if (!--mappingNesting) {\n                while (dependentObservables.length) {\n                    var DO = dependentObservables.pop();\n                    if (DO) {\n                        DO();\n                        // Move this magic property to the underlying dependent observable\n                        DO.__DO[\"throttleEvaluation\"] = DO[\"throttleEvaluation\"];\n                    }\n                }\n            }\n\n            // Save any new mapping options in the view model, so that updateFromJS can use them later.\n            result[mappingProperty] = merge(result[mappingProperty], options);\n\n            return result;\n        }\n        catch (e) {\n            mappingNesting = 0;\n            throw e;\n        }\n    };\n\n    exports.fromJSON = function(jsonString /*, options, target*/) {\n        var args = Array.prototype.slice.call(arguments, 0);\n        args[0] = ko.utils.parseJson(jsonString);\n        return exports.fromJS.apply(this, args);\n    };\n\n    exports.toJS = function(rootObject, options) {\n        if (!defaultOptions) exports.resetDefaultOptions();\n\n        if (arguments.length === 0) throw new Error(\"When calling ko.mapping.toJS, pass the object you want to convert.\");\n        if (exports.getType(defaultOptions.ignore) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().ignore should be an array.\");\n        if (exports.getType(defaultOptions.include) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().include should be an array.\");\n        if (exports.getType(defaultOptions.copy) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().copy should be an array.\");\n\n        // Merge in the options used in fromJS\n        options = fillOptions(options, rootObject[mappingProperty]);\n\n        // We just unwrap everything at every level in the object graph\n        return exports.visitModel(rootObject, function(x) {\n            return ko.utils.unwrapObservable(x);\n        }, options);\n    };\n\n    exports.toJSON = function(rootObject, options) {\n        var plainJavaScriptObject = exports.toJS(rootObject, options);\n        return ko.utils.stringifyJson(plainJavaScriptObject);\n    };\n\n    exports.defaultOptions = function() {\n        if (arguments.length > 0) {\n            defaultOptions = arguments[0];\n        }\n        else {\n            return defaultOptions;\n        }\n    };\n\n    exports.resetDefaultOptions = function() {\n        defaultOptions = {\n            include: _defaultOptions.include.slice(0),\n            ignore: _defaultOptions.ignore.slice(0),\n            copy: _defaultOptions.copy.slice(0),\n            observe: _defaultOptions.observe.slice(0)\n        };\n    };\n\n    exports.getType = function(x) {\n        if ((x) && (typeof (x) === \"object\")) {\n            if (x.constructor === Date) return \"date\";\n            if (x.constructor === Array) return \"array\";\n        }\n        return typeof x;\n    };\n\n    function fillOptions(rawOptions, otherOptions) {\n        var options = merge({}, rawOptions);\n\n        // Move recognized root-level properties into a root namespace\n        for (var i = recognizedRootProperties.length - 1; i >= 0; i--) {\n            var property = recognizedRootProperties[i];\n\n            // Carry on, unless this property is present\n            if (!options[property]) continue;\n\n            // Move the property into the root namespace\n            if (!(options[\"\"] instanceof Object)) options[\"\"] = {};\n            options[\"\"][property] = options[property];\n            delete options[property];\n        }\n\n        if (otherOptions) {\n            options.ignore = mergeArrays(otherOptions.ignore, options.ignore);\n            options.include = mergeArrays(otherOptions.include, options.include);\n            options.copy = mergeArrays(otherOptions.copy, options.copy);\n            options.observe = mergeArrays(otherOptions.observe, options.observe);\n        }\n        options.ignore = mergeArrays(options.ignore, defaultOptions.ignore);\n        options.include = mergeArrays(options.include, defaultOptions.include);\n        options.copy = mergeArrays(options.copy, defaultOptions.copy);\n        options.observe = mergeArrays(options.observe, defaultOptions.observe);\n\n        options.mappedProperties = options.mappedProperties || {};\n        options.copiedProperties = options.copiedProperties || {};\n        return options;\n    }\n\n    function mergeArrays(a, b) {\n        if (exports.getType(a) !== \"array\") {\n            if (exports.getType(a) === \"undefined\") a = [];\n            else a = [a];\n        }\n        if (exports.getType(b) !== \"array\") {\n            if (exports.getType(b) === \"undefined\") b = [];\n            else b = [b];\n        }\n\n        return ko.utils.arrayGetDistinctValues(a.concat(b));\n    }\n\n    // When using a 'create' callback, we proxy the dependent observable so that it doesn't immediately evaluate on creation.\n    // The reason is that the dependent observables in the user-specified callback may contain references to properties that have not been mapped yet.\n    function withProxyDependentObservable(dependentObservables, callback) {\n        var localDO = ko.dependentObservable;\n        ko.dependentObservable = function(read, owner, options) {\n            options = options || {};\n\n            if (read && typeof read === \"object\") { // mirrors condition in knockout implementation of DO's\n                options = read;\n            }\n\n            var realDeferEvaluation = options.deferEvaluation;\n\n            var isRemoved = false;\n\n            // We wrap the original dependent observable so that we can remove it from the 'dependentObservables' list we need to evaluate after mapping has\n            // completed if the user already evaluated the DO themselves in the meantime.\n            var wrap = function(DO) {\n                // Temporarily revert ko.dependentObservable, since it is used in ko.isWriteableObservable\n                var tmp = ko.dependentObservable;\n                ko.dependentObservable = realKoDependentObservable;\n                var isWriteable = ko.isWriteableObservable(DO);\n                ko.dependentObservable = tmp;\n\n                var wrapped = realKoDependentObservable({\n                    read: function() {\n                        if (!isRemoved) {\n                            ko.utils.arrayRemoveItem(dependentObservables, DO);\n                            isRemoved = true;\n                        }\n                        return DO.apply(DO, arguments);\n                    },\n                    write: isWriteable && function(val) {\n                        return DO(val);\n                    },\n                    deferEvaluation: true\n                });\n                if (DEBUG) wrapped._wrapper = true;\n                wrapped.__DO = DO;\n                return wrapped;\n            };\n\n            options.deferEvaluation = true; // will either set for just options, or both read/options.\n            var realDependentObservable = realKoDependentObservable(read, owner, options);\n\n            if (!realDeferEvaluation) {\n                realDependentObservable = wrap(realDependentObservable);\n                dependentObservables.push(realDependentObservable);\n            }\n\n            return realDependentObservable;\n        };\n        ko.dependentObservable.fn = realKoDependentObservable.fn;\n        ko.computed = ko.dependentObservable;\n        var result = callback();\n        ko.dependentObservable = localDO;\n        ko.computed = ko.dependentObservable;\n        return result;\n    }\n\n    function updateViewModel(mappedRootObject, rootObject, options, parentName, parent, parentPropertyName, mappedParent) {\n        var isArray = exports.getType(ko.utils.unwrapObservable(rootObject)) === \"array\";\n\n        parentPropertyName = parentPropertyName || \"\";\n\n        // If this object was already mapped previously, take the options from there and merge them with our existing ones.\n        if (exports.isMapped(mappedRootObject)) {\n            var previousMapping = ko.utils.unwrapObservable(mappedRootObject)[mappingProperty];\n            options = merge(previousMapping, options);\n        }\n\n        var callbackParams = {\n            data: rootObject,\n            parent: mappedParent || parent\n        };\n\n        var hasCreateCallback = function() {\n            return options[parentName] && options[parentName].create instanceof Function;\n        };\n\n        var createCallback = function(data) {\n            return withProxyDependentObservable(dependentObservables, function() {\n\n                if (ko.utils.unwrapObservable(parent) instanceof Array) {\n                    return options[parentName].create({\n                        data: data || callbackParams.data,\n                        parent: callbackParams.parent,\n                        skip: emptyReturn\n                    });\n                }\n                else {\n                    return options[parentName].create({\n                        data: data || callbackParams.data,\n                        parent: callbackParams.parent\n                    });\n                }\n            });\n        };\n\n        var hasUpdateCallback = function() {\n            return options[parentName] && options[parentName].update instanceof Function;\n        };\n\n        var updateCallback = function(obj, data) {\n            var params = {\n                data: data || callbackParams.data,\n                parent: callbackParams.parent,\n                target: ko.utils.unwrapObservable(obj)\n            };\n\n            if (ko.isWriteableObservable(obj)) {\n                params.observable = obj;\n            }\n\n            return options[parentName].update(params);\n        };\n\n        var alreadyMapped = visitedObjects.get(rootObject);\n        if (alreadyMapped) {\n            return alreadyMapped;\n        }\n\n        parentName = parentName || \"\";\n\n        if (!isArray) {\n            // For atomic types, do a direct update on the observable\n            if (!canHaveProperties(rootObject)) {\n                switch (exports.getType(rootObject)) {\n                    case \"function\":\n                        if (hasUpdateCallback()) {\n                            if (ko.isWriteableObservable(rootObject)) {\n                                rootObject(updateCallback(rootObject));\n                                mappedRootObject = rootObject;\n                            }\n                            else {\n                                mappedRootObject = updateCallback(rootObject);\n                            }\n                        }\n                        else {\n                            mappedRootObject = rootObject;\n                        }\n                        break;\n                    default:\n                        if (ko.isWriteableObservable(mappedRootObject)) {\n                            var valueToWrite;\n                            if (hasUpdateCallback()) {\n                                valueToWrite = updateCallback(mappedRootObject);\n                                mappedRootObject(valueToWrite);\n                                return valueToWrite;\n                            }\n                            else {\n                                valueToWrite = ko.utils.unwrapObservable(rootObject);\n                                mappedRootObject(valueToWrite);\n                                return valueToWrite;\n                            }\n                        }\n                        else {\n                            var hasCreateOrUpdateCallback = hasCreateCallback() || hasUpdateCallback();\n\n                            if (hasCreateCallback()) {\n                                mappedRootObject = createCallback();\n                            }\n                            else {\n                                mappedRootObject = ko.observable(ko.utils.unwrapObservable(rootObject));\n                            }\n\n                            if (hasUpdateCallback()) {\n                                mappedRootObject(updateCallback(mappedRootObject));\n                            }\n\n                            if (hasCreateOrUpdateCallback) return mappedRootObject;\n                        }\n                }\n\n            }\n            else {\n                mappedRootObject = ko.utils.unwrapObservable(mappedRootObject);\n                if (!mappedRootObject) {\n                    if (hasCreateCallback()) {\n                        var result = createCallback();\n\n                        if (hasUpdateCallback()) {\n                            result = updateCallback(result);\n                        }\n                        return result;\n                    }\n                    else {\n                        if (hasUpdateCallback()) {\n                            //Removed ambiguous parameter result\n                            return updateCallback();\n                        }\n                        mappedRootObject = {};\n                    }\n                }\n\n                if (hasUpdateCallback()) {\n                    mappedRootObject = updateCallback(mappedRootObject);\n                }\n\n                visitedObjects.save(rootObject, mappedRootObject);\n                if (hasUpdateCallback()) return mappedRootObject;\n\n                // For non-atomic types, visit all properties and update recursively\n                visitPropertiesOrArrayEntries(rootObject, function(indexer) {\n                    var fullPropertyName = parentPropertyName.length ? parentPropertyName + \".\" + indexer : indexer;\n\n                    if (ko.utils.arrayIndexOf(options.ignore, fullPropertyName) !== -1) {\n                        return;\n                    }\n\n                    if (ko.utils.arrayIndexOf(options.copy, fullPropertyName) !== -1) {\n                        mappedRootObject[indexer] = rootObject[indexer];\n                        return;\n                    }\n\n                    if (typeof rootObject[indexer] !== \"object\" && exports.getType(rootObject[indexer]) !== \"array\" && options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {\n                        mappedRootObject[indexer] = rootObject[indexer];\n                        options.copiedProperties[fullPropertyName] = true;\n                        return;\n                    }\n\n                    // In case we are adding an already mapped property, fill it with the previously mapped property value to prevent recursion.\n                    // If this is a property that was generated by fromJS, we should use the options specified there\n                    var prevMappedProperty = visitedObjects.get(rootObject[indexer]);\n                    var retval = updateViewModel(mappedRootObject[indexer], rootObject[indexer], options, indexer, mappedRootObject, fullPropertyName, mappedRootObject);\n                    var value = prevMappedProperty || retval;\n\n                    if (options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {\n                        mappedRootObject[indexer] = ko.utils.unwrapObservable(value);\n                        options.copiedProperties[fullPropertyName] = true;\n                        return;\n                    }\n\n                    if (ko.isWriteableObservable(mappedRootObject[indexer])) {\n                        value = ko.utils.unwrapObservable(value);\n                        if (mappedRootObject[indexer]() !== value) {\n                            mappedRootObject[indexer](value);\n                        }\n                    }\n                    else {\n                        value = mappedRootObject[indexer] === undefined ? value : ko.utils.unwrapObservable(value);\n                        mappedRootObject[indexer] = value;\n                    }\n\n                    options.mappedProperties[fullPropertyName] = true;\n                });\n            }\n        }\n        else { //mappedRootObject is an array\n            var changes = [];\n\n            var hasKeyCallback = false;\n            var keyCallback = function(x) {\n                return x;\n            };\n            if (options[parentName] && options[parentName].key) {\n                keyCallback = options[parentName].key;\n                hasKeyCallback = true;\n            }\n\n            if (!ko.isObservable(mappedRootObject)) {\n                // When creating the new observable array, also add a bunch of utility functions that take the 'key' of the array items into account.\n                mappedRootObject = ko.observableArray([]);\n\n                mappedRootObject.mappedRemove = function(valueOrPredicate) {\n                    var predicate = typeof valueOrPredicate === \"function\" ? valueOrPredicate : function(value) {\n                        return value === keyCallback(valueOrPredicate);\n                    };\n                    return mappedRootObject.remove(function(item) {\n                        return predicate(keyCallback(item));\n                    });\n                };\n\n                mappedRootObject.mappedRemoveAll = function(arrayOfValues) {\n                    var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);\n                    return mappedRootObject.remove(function(item) {\n                        return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) !== -1;\n                    });\n                };\n\n                mappedRootObject.mappedDestroy = function(valueOrPredicate) {\n                    var predicate = typeof valueOrPredicate === \"function\" ? valueOrPredicate : function(value) {\n                        return value === keyCallback(valueOrPredicate);\n                    };\n                    return mappedRootObject.destroy(function(item) {\n                        return predicate(keyCallback(item));\n                    });\n                };\n\n                mappedRootObject.mappedDestroyAll = function(arrayOfValues) {\n                    var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);\n                    return mappedRootObject.destroy(function(item) {\n                        return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) !== -1;\n                    });\n                };\n\n                mappedRootObject.mappedIndexOf = function(item) {\n                    var keys = filterArrayByKey(mappedRootObject(), keyCallback);\n                    var key = keyCallback(item);\n                    return ko.utils.arrayIndexOf(keys, key);\n                };\n\n                mappedRootObject.mappedGet = function(item) {\n                    return mappedRootObject()[mappedRootObject.mappedIndexOf(item)];\n                };\n\n                mappedRootObject.mappedCreate = function(value) {\n                    if (mappedRootObject.mappedIndexOf(value) !== -1) {\n                        throw new Error(\"There already is an object with the key that you specified.\");\n                    }\n                    var item = hasCreateCallback() ? createCallback(value) : value;\n                    if (hasUpdateCallback()) {\n                        var newValue = updateCallback(item, value);\n                        if (ko.isWriteableObservable(item)) {\n                            item(newValue);\n                        }\n                        else {\n                            item = newValue;\n                        }\n                    }\n                    mappedRootObject.push(item);\n                    return item;\n                };\n            }\n\n            var currentArrayKeys = filterArrayByKey(ko.utils.unwrapObservable(mappedRootObject), keyCallback).sort();\n            var newArrayKeys = filterArrayByKey(rootObject, keyCallback);\n            if (hasKeyCallback) newArrayKeys.sort();\n            var editScript = ko.utils.compareArrays(currentArrayKeys, newArrayKeys);\n\n            var ignoreIndexOf = {};\n\n            var i, j, key;\n\n            var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);\n            var itemsByKey = {};\n            var optimizedKeys = true;\n            for (i = 0, j = unwrappedRootObject.length; i < j; i++) {\n                key = keyCallback(unwrappedRootObject[i]);\n                if (key === undefined || key instanceof Object) {\n                    optimizedKeys = false;\n                    break;\n                }\n                itemsByKey[key] = unwrappedRootObject[i];\n            }\n\n            var newContents = [];\n            var passedOver = 0;\n            var item, index;\n\n            for (i = 0, j = editScript.length; i < j; i++) {\n                key = editScript[i];\n                var mappedItem;\n                var fullPropertyName = parentPropertyName + \"[\" + i + \"]\";\n                switch (key.status) {\n                    case \"added\":\n                        item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);\n                        mappedItem = updateViewModel(undefined, item, options, parentName, mappedRootObject, fullPropertyName, parent);\n                        if (!hasCreateCallback()) {\n                            mappedItem = ko.utils.unwrapObservable(mappedItem);\n                        }\n\n                        index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);\n\n                        if (mappedItem === emptyReturn) {\n                            passedOver++;\n                        }\n                        else {\n                            newContents[index - passedOver] = mappedItem;\n                        }\n\n                        ignoreIndexOf[index] = true;\n                        break;\n                    case \"retained\":\n                        item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);\n                        mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);\n                        updateViewModel(mappedItem, item, options, parentName, mappedRootObject, fullPropertyName, parent);\n\n                        index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);\n                        newContents[index] = mappedItem;\n                        ignoreIndexOf[index] = true;\n                        break;\n                    case \"deleted\":\n                        mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);\n                        break;\n                }\n\n                changes.push({\n                    event: key.status,\n                    item: mappedItem\n                });\n            }\n\n            mappedRootObject(newContents);\n\n            if (options[parentName] && options[parentName].arrayChanged) {\n                ko.utils.arrayForEach(changes, function(change) {\n                    options[parentName].arrayChanged(change.event, change.item);\n                });\n            }\n        }\n\n        return mappedRootObject;\n    }\n\n    function ignorableIndexOf(array, item, ignoreIndices) {\n        for (var i = 0, j = array.length; i < j; i++) {\n            if (ignoreIndices[i] === true) continue;\n            if (array[i] === item) return i;\n        }\n        return null;\n    }\n\n    function mapKey(item, callback) {\n        var mappedItem;\n        if (callback) mappedItem = callback(item);\n        if (exports.getType(mappedItem) === \"undefined\") mappedItem = item;\n\n        return ko.utils.unwrapObservable(mappedItem);\n    }\n\n    function getItemByKey(array, key, callback) {\n        array = ko.utils.unwrapObservable(array);\n        for (var i = 0, j = array.length; i < j; i++) {\n            var item = array[i];\n            if (mapKey(item, callback) === key) return item;\n        }\n\n        throw new Error(\"When calling ko.update*, the key '\" + key + \"' was not found!\");\n    }\n\n    function filterArrayByKey(array, callback) {\n        return ko.utils.arrayMap(ko.utils.unwrapObservable(array), function(item) {\n            if (callback) {\n                return mapKey(item, callback);\n            }\n            else {\n                return item;\n            }\n        });\n    }\n\n    function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {\n        if (exports.getType(rootObject) === \"array\") {\n            for (var i = 0; i < rootObject.length; i++)\n                visitorCallback(i);\n        }\n        else {\n            for (var propertyName in rootObject) {\n                if (rootObject.hasOwnProperty(propertyName)) {\n                    visitorCallback(propertyName);\n                }\n            }\n        }\n    }\n\n    function canHaveProperties(object) {\n        var type = exports.getType(object);\n        return ((type === \"object\") || (type === \"array\")) && (object !== null);\n    }\n\n    // Based on the parentName, this creates a fully classified name of a property\n\n    function getPropertyName(parentName, parent, indexer) {\n        var propertyName = parentName || \"\";\n        if (exports.getType(parent) === \"array\") {\n            if (parentName) {\n                propertyName += \"[\" + indexer + \"]\";\n            }\n        }\n        else {\n            if (parentName) {\n                propertyName += \".\";\n            }\n            propertyName += indexer;\n        }\n        return propertyName;\n    }\n\n    exports.visitModel = function(rootObject, callback, options) {\n        options = options || {};\n        options.visitedObjects = options.visitedObjects || new ObjectLookup();\n\n        var mappedRootObject;\n        var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);\n\n        if (!canHaveProperties(unwrappedRootObject)) {\n            return callback(rootObject, options.parentName);\n        }\n        else {\n            options = fillOptions(options, unwrappedRootObject[mappingProperty]);\n\n            // Only do a callback, but ignore the results\n            callback(rootObject, options.parentName);\n            mappedRootObject = exports.getType(unwrappedRootObject) === \"array\" ? 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* Knockout Mapping plugin v2.5.0\n * (c) 2013 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/\n * License: MIT (http://www.opensource.org/licenses/mit-license.php)\n */\n(function(factory) {\n    'use strict';\n\n    /*jshint sub:true,curly:false*/\n    /*global ko,require,exports,define,module*/\n\n    if (typeof require === \"function\" && typeof exports === \"object\" && typeof module === \"object\") {\n        // CommonJS or Node: hard-coded dependency on \"knockout\"\n        factory(require(\"knockout\"), exports);\n    }\n    else if (typeof define === \"function\" && define[\"amd\"]) {\n        // AMD anonymous module with hard-coded dependency on \"knockout\"\n        define([\"knockout\", \"exports\"], factory);\n    }\n    else {\n        // <script> tag: use the global `ko` object, attaching a `mapping` property\n        if (typeof ko === 'undefined') {\n            throw new Error('Knockout is required, please ensure it is loaded before loading this mapping plug-in');\n        }\n        factory(ko, ko.mapping = {});\n    }\n}(function(ko, exports) {\n    /*jshint sub:true,curly:false*/\n    'use strict';\n\n    ko.mapping = exports;\n\n    const DEBUG=false;\n    var mappingProperty = \"__ko_mapping__\";\n    var realKoDependentObservable = ko.dependentObservable;\n    var mappingNesting = 0;\n    var dependentObservables;\n    var visitedObjects;\n    var recognizedRootProperties = [\"create\", \"update\", \"key\", \"arrayChanged\"];\n    var emptyReturn = {};\n\n    var _defaultOptions = {\n        include: [\"_destroy\"],\n        ignore: [],\n        copy: [],\n        observe: []\n    };\n    var defaultOptions = _defaultOptions;\n\n    function unionArrays() {\n        var args = arguments,\n            l = args.length,\n            obj = {},\n            res = [],\n            i, j, k;\n\n        while (l--) {\n            k = args[l];\n            i = k.length;\n\n            while (i--) {\n                j = k[i];\n                if (!obj[j]) {\n                    obj[j] = 1;\n                    res.push(j);\n                }\n            }\n        }\n\n        return res;\n    }\n\n    function extendObject(destination, source) {\n        var destType;\n\n        for (var key in source) {\n            if (source.hasOwnProperty(key) && source[key]) {\n                destType = exports.getType(destination[key]);\n                if (key && destination[key] && destType !== \"array\" && destType !== \"string\") {\n                    extendObject(destination[key], source[key]);\n                }\n                else {\n                    var bothArrays = exports.getType(destination[key]) === \"array\" && exports.getType(source[key]) === \"array\";\n                    if (bothArrays) {\n                        destination[key] = unionArrays(destination[key], source[key]);\n                    }\n                    else {\n                        destination[key] = source[key];\n                    }\n                }\n            }\n        }\n    }\n\n    function merge(obj1, obj2) {\n        var merged = {};\n        extendObject(merged, obj1);\n        extendObject(merged, obj2);\n\n        return merged;\n    }\n\n    exports.isMapped = function(viewModel) {\n        var unwrapped = ko.utils.unwrapObservable(viewModel);\n        return unwrapped && unwrapped[mappingProperty];\n    };\n\n    exports.fromJS = function(jsObject /*, inputOptions, target*/) {\n        if (arguments.length === 0) {\n            throw new Error(\"When calling ko.fromJS, pass the object you want to convert.\");\n        }\n        try {\n            if (!mappingNesting) {\n                dependentObservables = [];\n                visitedObjects = new ObjectLookup();\n            }\n            mappingNesting++;\n\n            var options;\n            var target;\n\n            if (arguments.length === 2) {\n                if (arguments[1][mappingProperty]) {\n                    target = arguments[1];\n                }\n                else {\n                    options = arguments[1];\n                }\n            }\n            if (arguments.length === 3) {\n                options = arguments[1];\n                target = arguments[2];\n            }\n\n            if (target) {\n                options = merge(options, target[mappingProperty]);\n            }\n            options = fillOptions(options);\n\n            var result = updateViewModel(target, jsObject, options);\n            if (target) {\n                result = target;\n            }\n\n            // Evaluate any dependent observables that were proxied.\n            // Do this after the model's observables have been created\n            if (!--mappingNesting) {\n                while (dependentObservables.length) {\n                    var DO = dependentObservables.pop();\n                    if (DO) {\n                        DO();\n                        // Move this magic property to the underlying dependent observable\n                        DO.__DO[\"throttleEvaluation\"] = DO[\"throttleEvaluation\"];\n                    }\n                }\n            }\n\n            // Save any new mapping options in the view model, so that updateFromJS can use them later.\n            result[mappingProperty] = merge(result[mappingProperty], options);\n\n            return result;\n        }\n        catch (e) {\n            mappingNesting = 0;\n            throw e;\n        }\n    };\n\n    exports.fromJSON = function(jsonString /*, options, target*/) {\n        var args = Array.prototype.slice.call(arguments, 0);\n        args[0] = ko.utils.parseJson(jsonString);\n        return exports.fromJS.apply(this, args);\n    };\n\n    exports.toJS = function(rootObject, options) {\n        if (!defaultOptions) exports.resetDefaultOptions();\n\n        if (arguments.length === 0) throw new Error(\"When calling ko.mapping.toJS, pass the object you want to convert.\");\n        if (exports.getType(defaultOptions.ignore) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().ignore should be an array.\");\n        if (exports.getType(defaultOptions.include) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().include should be an array.\");\n        if (exports.getType(defaultOptions.copy) !== \"array\") throw new Error(\"ko.mapping.defaultOptions().copy should be an array.\");\n\n        // Merge in the options used in fromJS\n        options = fillOptions(options, rootObject[mappingProperty]);\n\n        // We just unwrap everything at every level in the object graph\n        return exports.visitModel(rootObject, function(x) {\n            return ko.utils.unwrapObservable(x);\n        }, options);\n    };\n\n    exports.toJSON = function(rootObject, options) {\n        var plainJavaScriptObject = exports.toJS(rootObject, options);\n        return ko.utils.stringifyJson(plainJavaScriptObject);\n    };\n\n    exports.defaultOptions = function() {\n        if (arguments.length > 0) {\n            defaultOptions = arguments[0];\n        }\n        else {\n            return defaultOptions;\n        }\n    };\n\n    exports.resetDefaultOptions = function() {\n        defaultOptions = {\n            include: _defaultOptions.include.slice(0),\n            ignore: _defaultOptions.ignore.slice(0),\n            copy: _defaultOptions.copy.slice(0),\n            observe: _defaultOptions.observe.slice(0)\n        };\n    };\n\n    exports.getType = function(x) {\n        if ((x) && (typeof (x) === \"object\")) {\n            if (x.constructor === Date) return \"date\";\n            if (x.constructor === Array) return \"array\";\n        }\n        return typeof x;\n    };\n\n    function fillOptions(rawOptions, otherOptions) {\n        var options = merge({}, rawOptions);\n\n        // Move recognized root-level properties into a root namespace\n        for (var i = recognizedRootProperties.length - 1; i >= 0; i--) {\n            var property = recognizedRootProperties[i];\n\n            // Carry on, unless this property is present\n            if (!options[property]) continue;\n\n            // Move the property into the root namespace\n            if (!(options[\"\"] instanceof Object)) options[\"\"] = {};\n            options[\"\"][property] = options[property];\n            delete options[property];\n        }\n\n        if (otherOptions) {\n            options.ignore = mergeArrays(otherOptions.ignore, options.ignore);\n            options.include = mergeArrays(otherOptions.include, options.include);\n            options.copy = mergeArrays(otherOptions.copy, options.copy);\n            options.observe = mergeArrays(otherOptions.observe, options.observe);\n        }\n        options.ignore = mergeArrays(options.ignore, defaultOptions.ignore);\n        options.include = mergeArrays(options.include, defaultOptions.include);\n        options.copy = mergeArrays(options.copy, defaultOptions.copy);\n        options.observe = mergeArrays(options.observe, defaultOptions.observe);\n\n        options.mappedProperties = options.mappedProperties || {};\n        options.copiedProperties = options.copiedProperties || {};\n        return options;\n    }\n\n    function mergeArrays(a, b) {\n        if (exports.getType(a) !== \"array\") {\n            if (exports.getType(a) === \"undefined\") a = [];\n            else a = [a];\n        }\n        if (exports.getType(b) !== \"array\") {\n            if (exports.getType(b) === \"undefined\") b = [];\n            else b = [b];\n        }\n\n        return ko.utils.arrayGetDistinctValues(a.concat(b));\n    }\n\n    // When using a 'create' callback, we proxy the dependent observable so that it doesn't immediately evaluate on creation.\n    // The reason is that the dependent observables in the user-specified callback may contain references to properties that have not been mapped yet.\n    function withProxyDependentObservable(dependentObservables, callback) {\n        var localDO = ko.dependentObservable;\n        ko.dependentObservable = function(read, owner, options) {\n            options = options || {};\n\n            if (read && typeof read === \"object\") { // mirrors condition in knockout implementation of DO's\n                options = read;\n            }\n\n            var realDeferEvaluation = options.deferEvaluation;\n\n            var isRemoved = false;\n\n            // We wrap the original dependent observable so that we can remove it from the 'dependentObservables' list we need to evaluate after mapping has\n            // completed if the user already evaluated the DO themselves in the meantime.\n            var wrap = function(DO) {\n                // Temporarily revert ko.dependentObservable, since it is used in ko.isWriteableObservable\n                var tmp = ko.dependentObservable;\n                ko.dependentObservable = realKoDependentObservable;\n                var isWriteable = ko.isWriteableObservable(DO);\n                ko.dependentObservable = tmp;\n\n                var wrapped = realKoDependentObservable({\n                    read: function() {\n                        if (!isRemoved) {\n                            ko.utils.arrayRemoveItem(dependentObservables, DO);\n                            isRemoved = true;\n                        }\n                        return DO.apply(DO, arguments);\n                    },\n                    write: isWriteable && function(val) {\n                        return DO(val);\n                    },\n                    deferEvaluation: true\n                });\n                if (DEBUG) wrapped._wrapper = true;\n                wrapped.__DO = DO;\n                return wrapped;\n            };\n\n            options.deferEvaluation = true; // will either set for just options, or both read/options.\n            var realDependentObservable = realKoDependentObservable(read, owner, options);\n\n            if (!realDeferEvaluation) {\n                realDependentObservable = wrap(realDependentObservable);\n                dependentObservables.push(realDependentObservable);\n            }\n\n            return realDependentObservable;\n        };\n        ko.dependentObservable.fn = realKoDependentObservable.fn;\n        ko.computed = ko.dependentObservable;\n        var result = callback();\n        ko.dependentObservable = localDO;\n        ko.computed = ko.dependentObservable;\n        return result;\n    }\n\n    function updateViewModel(mappedRootObject, rootObject, options, parentName, parent, parentPropertyName, mappedParent) {\n        var isArray = exports.getType(ko.utils.unwrapObservable(rootObject)) === \"array\";\n\n        parentPropertyName = parentPropertyName || \"\";\n\n        // If this object was already mapped previously, take the options from there and merge them with our existing ones.\n        if (exports.isMapped(mappedRootObject)) {\n            var previousMapping = ko.utils.unwrapObservable(mappedRootObject)[mappingProperty];\n            options = merge(previousMapping, options);\n        }\n\n        var callbackParams = {\n            data: rootObject,\n            parent: mappedParent || parent\n        };\n\n        var hasCreateCallback = function() {\n            return options[parentName] && options[parentName].create instanceof Function;\n        };\n\n        var createCallback = function(data) {\n            return withProxyDependentObservable(dependentObservables, function() {\n\n                if (ko.utils.unwrapObservable(parent) instanceof Array) {\n                    return options[parentName].create({\n                        data: data || callbackParams.data,\n                        parent: callbackParams.parent,\n                        skip: emptyReturn\n                    });\n                }\n                else {\n                    return options[parentName].create({\n                        data: data || callbackParams.data,\n                        parent: callbackParams.parent\n                    });\n                }\n            });\n        };\n\n        var hasUpdateCallback = function() {\n            return options[parentName] && options[parentName].update instanceof Function;\n        };\n\n        var updateCallback = function(obj, data) {\n            var params = {\n                data: data || callbackParams.data,\n                parent: callbackParams.parent,\n                target: ko.utils.unwrapObservable(obj)\n            };\n\n            if (ko.isWriteableObservable(obj)) {\n                params.observable = obj;\n            }\n\n            return options[parentName].update(params);\n        };\n\n        var alreadyMapped = visitedObjects.get(rootObject);\n        if (alreadyMapped) {\n            return alreadyMapped;\n        }\n\n        parentName = parentName || \"\";\n\n        if (!isArray) {\n            // For atomic types, do a direct update on the observable\n            if (!canHaveProperties(rootObject)) {\n                switch (exports.getType(rootObject)) {\n                    case \"function\":\n                        if (hasUpdateCallback()) {\n                            if (ko.isWriteableObservable(rootObject)) {\n                                rootObject(updateCallback(rootObject));\n                                mappedRootObject = rootObject;\n                            }\n                            else {\n                                mappedRootObject = updateCallback(rootObject);\n                            }\n                        }\n                        else {\n                            mappedRootObject = rootObject;\n                        }\n                        break;\n                    default:\n                        if (ko.isWriteableObservable(mappedRootObject)) {\n                            var valueToWrite;\n                            if (hasUpdateCallback()) {\n                                valueToWrite = updateCallback(mappedRootObject);\n                                mappedRootObject(valueToWrite);\n                                return valueToWrite;\n                            }\n                            else {\n                                valueToWrite = ko.utils.unwrapObservable(rootObject);\n                                mappedRootObject(valueToWrite);\n                                return valueToWrite;\n                            }\n                        }\n                        else {\n                            var hasCreateOrUpdateCallback = hasCreateCallback() || hasUpdateCallback();\n\n                            if (hasCreateCallback()) {\n                                mappedRootObject = createCallback();\n                            }\n                            else {\n                                mappedRootObject = ko.observable(ko.utils.unwrapObservable(rootObject));\n                            }\n\n                            if (hasUpdateCallback()) {\n                                mappedRootObject(updateCallback(mappedRootObject));\n                            }\n\n                            if (hasCreateOrUpdateCallback) return mappedRootObject;\n                        }\n                }\n\n            }\n            else {\n                mappedRootObject = ko.utils.unwrapObservable(mappedRootObject);\n                if (!mappedRootObject) {\n                    if (hasCreateCallback()) {\n                        var result = createCallback();\n\n                        if (hasUpdateCallback()) {\n                            result = updateCallback(result);\n                        }\n                        return result;\n                    }\n                    else {\n                        if (hasUpdateCallback()) {\n                            //Removed ambiguous parameter result\n                            return updateCallback();\n                        }\n                        mappedRootObject = {};\n                    }\n                }\n\n                if (hasUpdateCallback()) {\n                    mappedRootObject = updateCallback(mappedRootObject);\n                }\n\n                visitedObjects.save(rootObject, mappedRootObject);\n                if (hasUpdateCallback()) return mappedRootObject;\n\n                // For non-atomic types, visit all properties and update recursively\n                visitPropertiesOrArrayEntries(rootObject, function(indexer) {\n                    var fullPropertyName = parentPropertyName.length ? parentPropertyName + \".\" + indexer : indexer;\n\n                    if (ko.utils.arrayIndexOf(options.ignore, fullPropertyName) !== -1) {\n                        return;\n                    }\n\n                    if (ko.utils.arrayIndexOf(options.copy, fullPropertyName) !== -1) {\n                        mappedRootObject[indexer] = rootObject[indexer];\n                        return;\n                    }\n\n                    if (typeof rootObject[indexer] !== \"object\" && exports.getType(rootObject[indexer]) !== \"array\" && options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {\n                        mappedRootObject[indexer] = rootObject[indexer];\n                        options.copiedProperties[fullPropertyName] = true;\n                        return;\n                    }\n\n                    // In case we are adding an already mapped property, fill it with the previously mapped property value to prevent recursion.\n                    // If this is a property that was generated by fromJS, we should use the options specified there\n                    var prevMappedProperty = visitedObjects.get(rootObject[indexer]);\n                    var retval = updateViewModel(mappedRootObject[indexer], rootObject[indexer], options, indexer, mappedRootObject, fullPropertyName, mappedRootObject);\n                    var value = prevMappedProperty || retval;\n\n                    if (options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {\n                        mappedRootObject[indexer] = ko.utils.unwrapObservable(value);\n                        options.copiedProperties[fullPropertyName] = true;\n                        return;\n                    }\n\n                    if (ko.isWriteableObservable(mappedRootObject[indexer])) {\n                        value = ko.utils.unwrapObservable(value);\n                        if (mappedRootObject[indexer]() !== value) {\n                            mappedRootObject[indexer](value);\n                        }\n                    }\n                    else {\n                        value = mappedRootObject[indexer] === undefined ? value : ko.utils.unwrapObservable(value);\n                        mappedRootObject[indexer] = value;\n                    }\n\n                    options.mappedProperties[fullPropertyName] = true;\n                });\n            }\n        }\n        else { //mappedRootObject is an array\n            var changes = [];\n\n            var hasKeyCallback = false;\n            var keyCallback = function(x) {\n                return x;\n            };\n            if (options[parentName] && options[parentName].key) {\n                keyCallback = options[parentName].key;\n                hasKeyCallback = true;\n            }\n\n            if (!ko.isObservable(mappedRootObject)) {\n                // When creating the new observable array, also add a bunch of utility functions that take the 'key' of the array items into account.\n                mappedRootObject = ko.observableArray([]);\n\n                mappedRootObject.mappedRemove = function(valueOrPredicate) {\n                    var predicate = typeof valueOrPredicate === \"function\" ? valueOrPredicate : function(value) {\n                        return value === keyCallback(valueOrPredicate);\n                    };\n                    return mappedRootObject.remove(function(item) {\n                        return predicate(keyCallback(item));\n                    });\n                };\n\n                mappedRootObject.mappedRemoveAll = function(arrayOfValues) {\n                    var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);\n                    return mappedRootObject.remove(function(item) {\n                        return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) !== -1;\n                    });\n                };\n\n                mappedRootObject.mappedDestroy = function(valueOrPredicate) {\n                    var predicate = typeof valueOrPredicate === \"function\" ? valueOrPredicate : function(value) {\n                        return value === keyCallback(valueOrPredicate);\n                    };\n                    return mappedRootObject.destroy(function(item) {\n                        return predicate(keyCallback(item));\n                    });\n                };\n\n                mappedRootObject.mappedDestroyAll = function(arrayOfValues) {\n                    var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);\n                    return mappedRootObject.destroy(function(item) {\n                        return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) !== -1;\n                    });\n                };\n\n                mappedRootObject.mappedIndexOf = function(item) {\n                    var keys = filterArrayByKey(mappedRootObject(), keyCallback);\n                    var key = keyCallback(item);\n                    return ko.utils.arrayIndexOf(keys, key);\n                };\n\n                mappedRootObject.mappedGet = function(item) {\n                    return mappedRootObject()[mappedRootObject.mappedIndexOf(item)];\n                };\n\n                mappedRootObject.mappedCreate = function(value) {\n                    if (mappedRootObject.mappedIndexOf(value) !== -1) {\n                        throw new Error(\"There already is an object with the key that you specified.\");\n                    }\n                    var item = hasCreateCallback() ? createCallback(value) : value;\n                    if (hasUpdateCallback()) {\n                        var newValue = updateCallback(item, value);\n                        if (ko.isWriteableObservable(item)) {\n                            item(newValue);\n                        }\n                        else {\n                            item = newValue;\n                        }\n                    }\n                    mappedRootObject.push(item);\n                    return item;\n                };\n            }\n\n            var currentArrayKeys = filterArrayByKey(ko.utils.unwrapObservable(mappedRootObject), keyCallback).sort();\n            var newArrayKeys = filterArrayByKey(rootObject, keyCallback);\n            if (hasKeyCallback) newArrayKeys.sort();\n            var editScript = ko.utils.compareArrays(currentArrayKeys, newArrayKeys);\n\n            var ignoreIndexOf = {};\n\n            var i, j, key;\n\n            var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);\n            var itemsByKey = {};\n            var optimizedKeys = true;\n            for (i = 0, j = unwrappedRootObject.length; i < j; i++) {\n                key = keyCallback(unwrappedRootObject[i]);\n                if (key === undefined || key instanceof Object) {\n                    optimizedKeys = false;\n                    break;\n                }\n                itemsByKey[key] = unwrappedRootObject[i];\n            }\n\n            var newContents = [];\n            var passedOver = 0;\n            var item, index;\n\n            for (i = 0, j = editScript.length; i < j; i++) {\n                key = editScript[i];\n                var mappedItem;\n                var fullPropertyName = parentPropertyName + \"[\" + i + \"]\";\n                switch (key.status) {\n                    case \"added\":\n                        item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);\n                        mappedItem = updateViewModel(undefined, item, options, parentName, mappedRootObject, fullPropertyName, parent);\n                        if (!hasCreateCallback()) {\n                            mappedItem = ko.utils.unwrapObservable(mappedItem);\n                        }\n\n                        index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);\n\n                        if (mappedItem === emptyReturn) {\n                            passedOver++;\n                        }\n                        else {\n                            newContents[index - passedOver] = mappedItem;\n                        }\n\n                        ignoreIndexOf[index] = true;\n                        break;\n                    case \"retained\":\n                        item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);\n                        mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);\n                        updateViewModel(mappedItem, item, options, parentName, mappedRootObject, fullPropertyName, parent);\n\n                        index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);\n                        newContents[index] = mappedItem;\n                        ignoreIndexOf[index] = true;\n                        break;\n                    case \"deleted\":\n                        mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);\n                        break;\n                }\n\n                changes.push({\n                    event: key.status,\n                    item: mappedItem\n                });\n            }\n\n            mappedRootObject(newContents);\n\n            if (options[parentName] && options[parentName].arrayChanged) {\n                ko.utils.arrayForEach(changes, function(change) {\n                    options[parentName].arrayChanged(change.event, change.item);\n                });\n            }\n        }\n\n        return mappedRootObject;\n    }\n\n    function ignorableIndexOf(array, item, ignoreIndices) {\n        for (var i = 0, j = array.length; i < j; i++) {\n            if (ignoreIndices[i] === true) continue;\n            if (array[i] === item) return i;\n        }\n        return null;\n    }\n\n    function mapKey(item, callback) {\n        var mappedItem;\n        if (callback) mappedItem = callback(item);\n        if (exports.getType(mappedItem) === \"undefined\") mappedItem = item;\n\n        return ko.utils.unwrapObservable(mappedItem);\n    }\n\n    function getItemByKey(array, key, callback) {\n        array = ko.utils.unwrapObservable(array);\n        for (var i = 0, j = array.length; i < j; i++) {\n            var item = array[i];\n            if (mapKey(item, callback) === key) return item;\n        }\n\n        throw new Error(\"When calling ko.update*, the key '\" + key + \"' was not found!\");\n    }\n\n    function filterArrayByKey(array, callback) {\n        return ko.utils.arrayMap(ko.utils.unwrapObservable(array), function(item) {\n            if (callback) {\n                return mapKey(item, callback);\n            }\n            else {\n                return item;\n            }\n        });\n    }\n\n    function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {\n        if (exports.getType(rootObject) === \"array\") {\n            for (var i = 0; i < rootObject.length; i++)\n                visitorCallback(i);\n        }\n        else {\n            for (var propertyName in rootObject) {\n                if (rootObject.hasOwnProperty(propertyName)) {\n                    visitorCallback(propertyName);\n                }\n            }\n        }\n    }\n\n    function canHaveProperties(object) {\n        var type = exports.getType(object);\n        return ((type === \"object\") || (type === \"array\")) && (object !== null);\n    }\n\n    // Based on the parentName, this creates a fully classified name of a property\n\n    function getPropertyName(parentName, parent, indexer) {\n        var propertyName = parentName || \"\";\n        if (exports.getType(parent) === \"array\") {\n            if (parentName) {\n                propertyName += \"[\" + indexer + \"]\";\n            }\n        }\n        else {\n            if (parentName) {\n                propertyName += \".\";\n            }\n            propertyName += indexer;\n        }\n        return propertyName;\n    }\n\n    exports.visitModel = function(rootObject, callback, options) {\n        options = options || {};\n        options.visitedObjects = options.visitedObjects || new ObjectLookup();\n\n        var mappedRootObject;\n        var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);\n\n        if (!canHaveProperties(unwrappedRootObject)) {\n            return callback(rootObject, options.parentName);\n        }\n        else {\n            options = fillOptions(options, unwrappedRootObject[mappingProperty]);\n\n            // Only do a callback, but ignore the results\n            callback(rootObject, options.parentName);\n            mappedRootObject = exports.getType(unwrappedRootObject) === \"array\" ? [] : {};\n        }\n\n        options.visitedObjects.save(rootObject, mappedRootObject);\n\n        var parentName = options.parentName;\n        visitPropertiesOrArrayEntries(unwrappedRootObject, function(indexer) {\n            if (options.ignore && ko.utils.arrayIndexOf(options.ignore, indexer) !== -1) return;\n\n            var propertyValue = unwrappedRootObject[indexer];\n            options.parentName = getPropertyName(parentName, unwrappedRootObject, indexer);\n\n            // If we don't want to explicitly copy the unmapped property...\n            if (ko.utils.arrayIndexOf(options.copy, indexer) === -1) {\n                // ...find out if it's a property we want to explicitly include\n                if (ko.utils.arrayIndexOf(options.include, indexer) === -1) {\n                    // The mapped properties object contains all the properties that were part of the original object.\n                    // If a property does not exist, and it is not because it is part of an array (e.g. \"myProp[3]\"), then it should not be unmapped.\n                    if (unwrappedRootObject[mappingProperty] &&\n                        unwrappedRootObject[mappingProperty].mappedProperties && !unwrappedRootObject[mappingProperty].mappedProperties[indexer] &&\n                        unwrappedRootObject[mappingProperty].copiedProperties && !unwrappedRootObject[mappingProperty].copiedProperties[indexer] && (exports.getType(unwrappedRootObject) !== \"array\")) {\n                        return;\n                    }\n                }\n            }\n\n            switch (exports.getType(ko.utils.unwrapObservable(propertyValue))) {\n                case \"object\":\n                case \"array\":\n                case \"undefined\":\n                    var previouslyMappedValue = options.visitedObjects.get(propertyValue);\n                    mappedRootObject[indexer] = (exports.getType(previouslyMappedValue) !== \"undefined\") ? previouslyMappedValue : exports.visitModel(propertyValue, callback, options);\n                    break;\n                default:\n                    mappedRootObject[indexer] = callback(propertyValue, options.parentName);\n            }\n        });\n\n        return mappedRootObject;\n    };\n\n    function SimpleObjectLookup() {\n        var keys = [];\n        var values = [];\n        this.save = function(key, value) {\n            var existingIndex = ko.utils.arrayIndexOf(keys, key);\n            if (existingIndex >= 0) values[existingIndex] = value;\n            else {\n                keys.push(key);\n                values.push(value);\n            }\n        };\n        this.get = function(key) {\n            var existingIndex = ko.utils.arrayIndexOf(keys, key);\n            var value = (existingIndex >= 0) ? values[existingIndex] : undefined;\n            return value;\n        };\n    }\n\n    function ObjectLookup() {\n        var buckets = {};\n\n        var findBucket = function(key) {\n            var bucketKey;\n            try {\n                bucketKey = key;//JSON.stringify(key);\n            }\n            catch (e) {\n                bucketKey = \"$$$\";\n            }\n\n            var bucket = buckets[bucketKey];\n            if (bucket === undefined) {\n                bucket = new SimpleObjectLookup();\n                buckets[bucketKey] = bucket;\n            }\n            return bucket;\n        };\n\n        this.save = function(key, value) {\n            findBucket(key).save(key, value);\n        };\n        this.get = function(key) {\n            return findBucket(key).get(key);\n        };\n    }\n}));\n"],"sourceRoot":"/source/"}
\ No newline at end of file
diff --git a/package.json b/package.json
index 19c2c6b..53cf511 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "knockout-mapping",
-  "version": "2.4.1",
+  "version": "2.5.0",
   "description": "Knockout Mapping plugin",
   "main": "dist/knockout.mapping.js",
   "files": [
@@ -16,7 +16,7 @@
     "ko"
   ],
   "peerDependencies": {
-    "knockout": ">=2.3.0"
+    "knockout": ">=2.2.0"
   },
   "devDependencies": {
     "del": "^1.1.1",