Clean out modifications to primitives

lib/validate.js

@@ -17,13 +17,15 @@ empty list will be returned. A validation error will have two properties:
 define([], function(){
 var exports = validate;
 // setup primitive classes to be JSON Schema types
-String.type = "string";
-Boolean.type = "boolean";
-Number.type = "number";
 exports.Integer = {type:"integer"};
-Object.type = "object";
-Array.type = "array";
-Date.type = "date";
+var primitiveConstructors = {
+	String: String,
+	Boolean: Boolean,
+	Number: Number,
+	Object: Object,
+	Array: Array,
+	Date: Date
+}
 exports.validate = validate;
 function validate(/*Any*/instance,/*Object*/schema) {
 		// Summary:
@@ -55,6 +57,9 @@ var validate = exports._validate = function(/*Any*/instance,/*Object*/schema,/*O
 	if (!options) options = {};
 	var _changing = options.changing;
 
+	function getType(schema){
+		return schema.type || (primitiveConstructors[schema.name] == schema && schema.name.toLowerCase());
+	}
 	var errors = [];
 	// validate a value against a property definition
 	function checkProp(value, schema, path,i){
@@ -65,7 +70,7 @@ var validate = exports._validate = function(/*Any*/instance,/*Object*/schema,/*O
 			errors.push({property:path,message:message});
 		}
 
-		if((typeof schema != 'object' || schema instanceof Array) && (path || typeof schema != 'function') && !(schema && schema.type)){
+		if((typeof schema != 'object' || schema instanceof Array) && (path || typeof schema != 'function') && !(schema && getType(schema))){
 			if(typeof schema == 'function'){
 				if(!(value instanceof schema)){
 					addError("is not an instance of the class/constructor " + schema.name);
@@ -117,7 +122,7 @@ var validate = exports._validate = function(/*Any*/instance,/*Object*/schema,/*O
 				addError("is missing and it is required");
 			}
 		}else{
-			errors = errors.concat(checkType(schema.type,value));
+			errors = errors.concat(checkType(getType(schema),value));
 			if(schema.disallow && !checkType(schema.disallow,value).length){
 				addError(" disallowed value was matched");
 			}