fixes gautamsi#167

Author: gautamsi

src/js/Exceptions/Exception.ts

@@ -37,6 +37,15 @@ export class Exception {//} extends Error { //ref: can not extend from Error. Ty
  * @override user JSON.stringify for now, todo: impelemtn real Exception tostring
  */
  toString() {
- return JSON.stringify(this);
+ let result = this.stack;
+ try {
+ result = result || JSON.stringify(this);
+ }
+ catch (e) { }
+
+ return result;
+ }
+ ToString() {
+ return this.toString();
  }
 }