Made JS enum declarations compatible with google closure

Original change by: https://github.com/alexames

Change-Id: Ib65bd02156d1c3637ed278a8334a2307caacaa44
diff --git a/tests/monster_test_generated.ts b/tests/monster_test_generated.ts
index 89cf6f1..3784a19 100644
--- a/tests/monster_test_generated.ts
+++ b/tests/monster_test_generated.ts
@@ -1,7 +1,7 @@
 // automatically generated by the FlatBuffers compiler, do not modify
 
 /**
- * @enum
+ * @enum {number}
  */
 export namespace MyGame.Example{
 export enum Color{
@@ -11,7 +11,7 @@
 }};
 
 /**
- * @enum
+ * @enum {number}
  */
 export namespace MyGame.Example{
 export enum Any{
@@ -22,7 +22,7 @@
 }};
 
 /**
- * @enum
+ * @enum {number}
  */
 export namespace MyGame.Example{
 export enum AnyUniqueAliases{
@@ -33,7 +33,7 @@
 }};
 
 /**
- * @enum
+ * @enum {number}
  */
 export namespace MyGame.Example{
 export enum AnyAmbiguousAliases{