fix(core): update

test/test.both.ts

@@ -1,9 +1,9 @@
 import { tap, expect } from '@pushrocks/tapbundle';
 
-import { Smartjson, foldDec } from '../ts/index';
+import * as smartjson from '../ts/index.js';
 
-class SomeClass extends Smartjson {
-  @foldDec() thisis: string = 'test';
+class SomeClass extends smartjson.Smartjson {
+  @smartjson.foldDec() thisis: string = 'test';
   constructor() {
     super();
     console.log(this.saveableProperties);
@@ -14,18 +14,30 @@ let mySomeClass: SomeClass;
 
 tap.test('should create a Foldable extended instance', async () => {
   mySomeClass = new SomeClass();
-  expect(mySomeClass).to.be.instanceof(SomeClass);
-  expect(mySomeClass).to.be.instanceof(Smartjson);
+  expect(mySomeClass).toBeInstanceOf(SomeClass);
+  expect(mySomeClass).toBeInstanceOf(smartjson.Smartjson);
 });
 
 tap.test('should create a folded object', async () => {
   let foldedObject = mySomeClass.foldToObject();
-  expect(foldedObject).property('thisis').to.equal('test');
+  expect(foldedObject).property('thisis').toEqual('test');
 });
 
 tap.test('should enfold from object', async () => {
   const mySomeClass2 = SomeClass.enfoldFromObject({ thisis: 'test2' });
-  expect(mySomeClass2).property('thisis').to.equal('test2');
+  expect(mySomeClass2).property('thisis').toEqual('test2');
+});
+
+tap.test('should products stable jsons', async () => {
+  const jsonString = smartjson.stringify({
+    a: 1,
+    f: 6,
+    b: 3,
+    c: 3,
+    e: 5,
+    d: 4,
+  });
+  console.log(jsonString);
 });
 
 tap.start();