v1.0.1: improved register method for names conflicts checking

index.js

@@ -129,8 +129,13 @@ NanoGroup.register = function (types, constr) {
 		var create = function createNanoNode(id, a, b, c) {
 			return this.add(new constr(type, cls.uid(id), a, b, c));
 		};
-		for (var i = 0, n = hs.length; i < n; ++i)
-			hs[i].prototype[type] = create;
+		for (var i = 0, n = hs.length; i < n; ++i) {
+			var c = hs[i],
+			    p = c.prototype;
+			if (type in p)
+				throw Error(c.type+'.'+type+'() method conflicts with registering constructor');
+			p[type] = create;
+		}
 	});
 };
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nano-tree",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Very convenient creating of objects hieararhies library",
   "main": "index.js",
   "keywords": [

test/test.js

@@ -359,6 +359,33 @@ suite('API', function () {
 		done()
 	});
 
+	test('Group.register() for two same constructors', function (done) {
+		function defnode(name, ancestor, cutoff) {
+			var c = new Function (name, 'type,id', 'nano.Node.call(this, type, id);');
+			c.prototype = {};
+			ancestor.expand(c, cutoff);
+			return c;
+		}
+		function defgroup(name, ancestor, cutoff) {
+			var c = new Function (name, 'type,id', 'nano.Group.call(this, type, id);');
+			c.prototype = {};
+			ancestor.expand(c, cutoff);
+			return c;
+		}
+
+		var Bow = defgroup('Bow', nano.Group);
+		var Arrow = defnode('Arrow', nano.Node);
+
+		Bow.register('arrow', Arrow);
+
+		try {
+			Bow.register('arrow', nano.Node);
+		} catch (e) {
+			return done();
+		}
+		done(Error('error not thrown'))
+	});
+
 });
 
 suite('creating', function () {