+ changing the JSData Promise type to interface

+ adding definitions object with usage example in tests for enabling custom type definitions of created resource definitions

js-data/js-data.d.ts

@@ -16,7 +16,7 @@
 // defining what exists in JSData and how it looks
 declare module JSData_ {
 
-    class JSDataPromise<R> extends Promise<R> {
+    interface JSDataPromise<R> extends Promise<R> {
 
         // enhanced with finally
         finally<U>(finallyCb?:() => U):Promise<U>;
@@ -30,6 +30,10 @@ declare module JSData_ {
         // rather undocumented
         errors:DSErrors;
 
+        // those are objects containing the defined resources and adapters
+        definitions:any;
+        adapters:any;
+
         defaults:DSConfiguration;
 
         changeHistory(resourceName:string, id?:string):Array<Object>;
@@ -394,7 +398,8 @@ declare module JSData_ {
 
 // declaring the existing global js object
 declare var JSData:{
-    DS: JSData_.DS
+    DS: JSData_.DS;
+    DSErrors: JSData_.DSErrors;
 };
 
 //Support node require