Fix: add dependencies

demo/filebrowser-durandal-widget/lib/knockout/src/subscribables/mappingHelpers.js

@@ -0,0 +1,96 @@
+
+(function() {
+    var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)
+
+    ko.toJS = function(rootObject) {
+        if (arguments.length == 0)
+            throw new Error("When calling ko.toJS, pass the object you want to convert.");
+
+        // We just unwrap everything at every level in the object graph
+        return mapJsObjectGraph(rootObject, function(valueToMap) {
+            // Loop because an observable's value might in turn be another observable wrapper
+            for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++)
+                valueToMap = valueToMap();
+            return valueToMap;
+        });
+    };
+
+    ko.toJSON = function(rootObject, replacer, space) {     // replacer and space are optional
+        var plainJavaScriptObject = ko.toJS(rootObject);
+        return ko.utils.stringifyJson(plainJavaScriptObject, replacer, space);
+    };
+
+    function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) {
+        visitedObjects = visitedObjects || new objectLookup();
+
+        rootObject = mapInputCallback(rootObject);
+        var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof RegExp)) && (!(rootObject instanceof Date)) && (!(rootObject instanceof String)) && (!(rootObject instanceof Number)) && (!(rootObject instanceof Boolean));
+        if (!canHaveProperties)
+            return rootObject;
+
+        var outputProperties = rootObject instanceof Array ? [] : {};
+        visitedObjects.save(rootObject, outputProperties);
+
+        visitPropertiesOrArrayEntries(rootObject, function(indexer) {
+            var propertyValue = mapInputCallback(rootObject[indexer]);
+
+            switch (typeof propertyValue) {
+                case "boolean":
+                case "number":
+                case "string":
+                case "function":
+                    outputProperties[indexer] = propertyValue;
+                    break;
+                case "object":
+                case "undefined":
+                    var previouslyMappedValue = visitedObjects.get(propertyValue);
+                    outputProperties[indexer] = (previouslyMappedValue !== undefined)
+                        ? previouslyMappedValue
+                        : mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects);
+                    break;
+            }
+        });
+
+        return outputProperties;
+    }
+
+    function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {
+        if (rootObject instanceof Array) {
+            for (var i = 0; i < rootObject.length; i++)
+                visitorCallback(i);
+
+            // For arrays, also respect toJSON property for custom mappings (fixes #278)
+            if (typeof rootObject['toJSON'] == 'function')
+                visitorCallback('toJSON');
+        } else {
+            for (var propertyName in rootObject) {
+                visitorCallback(propertyName);
+            }
+        }
+    };
+
+    function objectLookup() {
+        this.keys = [];
+        this.values = [];
+    };
+
+    objectLookup.prototype = {
+        constructor: objectLookup,
+        save: function(key, value) {
+            var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
+            if (existingIndex >= 0)
+                this.values[existingIndex] = value;
+            else {
+                this.keys.push(key);
+                this.values.push(value);
+            }
+        },
+        get: function(key) {
+            var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
+            return (existingIndex >= 0) ? this.values[existingIndex] : undefined;
+        }
+    };
+})();
+
+ko.exportSymbol('toJS', ko.toJS);
+ko.exportSymbol('toJSON', ko.toJSON);