feat(useQuery): returns stale as a part of useQuery.

Closes #91

Author: trojanowski

src/useQuery.ts

@@ -1,5 +1,5 @@
 import ApolloClient, {
-  ApolloCurrentResult,
+  ApolloCurrentQueryResult,
   ApolloError,
   ApolloQueryResult,
   FetchMoreOptions,
@@ -23,8 +23,8 @@ import { Omit, compact, objToKey } from './utils';
 
 export interface QueryHookState<TData>
   extends Pick<
-    ApolloCurrentResult<undefined | TData>,
-    'error' | 'errors' | 'loading' | 'partial'
+    ApolloCurrentQueryResult<undefined | TData>,
+    'error' | 'errors' | 'loading' | 'partial' | 'stale'
   > {
   data?: TData;
   // networkStatus is undefined for skipped queries or the ones using suspense
@@ -140,7 +140,7 @@ export function useQuery<
         updateQuery: observableQuery.updateQuery.bind(observableQuery),
       };
 
-      const result = observableQuery.currentResult();
+      const result = observableQuery.getCurrentResult();
 
       // return the old result data when there is an error
       let data = result.data as TData;
@@ -176,6 +176,7 @@ export function useQuery<
         // https://github.com/trojanowski/react-apollo-hooks/pull/68
         networkStatus: suspend ? undefined : result.networkStatus,
         partial: result.partial,
+        stale: result.stale,
       };
     },
     [shouldSkip, responseId, observableQuery]