return promise from query result & hook refetch

Author: Lenz Weber

packages/toolkit/src/query/core/buildInitiate.ts

@@ -56,7 +56,7 @@ export type QueryActionCreatorResult<
   abort(): void
   unwrap(): Promise<ResultTypeFrom<D>>
   unsubscribe(): void
-  refetch(): void
+  refetch(): QueryActionCreatorResult<D>
   updateSubscriptionOptions(options: SubscriptionOptions): void
   queryCacheKey: string
 }
@@ -311,11 +311,10 @@ Features like automatic cache collection, automatic refetching etc. will not be
 
               return result.data
             },
-            refetch() {
+            refetch: () =>
               dispatch(
                 queryAction(arg, { subscribe: false, forceRefetch: true })
-              )
-            },
+              ),
             unsubscribe() {
               if (subscribe)
                 dispatch(

packages/toolkit/src/query/react/buildHooks.ts

@@ -771,7 +771,13 @@ export function buildHooks<Definitions extends EndpointDefinitions>({
           /**
            * A method to manually refetch data for the query
            */
-          refetch: () => void promiseRef.current?.refetch(),
+          refetch: () => {
+            if (!promiseRef.current)
+              throw new Error(
+                'Cannot refetch a query that has not been started yet.'
+              )
+            return promiseRef.current?.refetch()
+          },
         }),
         []
       )