Fix ThunkActionDispatch: generic should expect to extend a function, …

…not just the return type

index.d.ts

@@ -23,7 +23,7 @@ export type ThunkAction<R, S, E, A extends Action> = (
  *
  * @template T ThunkAction to be wrapped
  */
-export type ThunkActionDispatch<T extends ThunkAction<any, any, any, any>> = (...args: Parameters<T>)
+export type ThunkActionDispatch<T extends (...args: any[]) => ThunkAction<any, any, any, any>> = (...args: Parameters<T>)
   => ReturnType<ReturnType<T>>;
 
 export type ThunkMiddleware<S = {}, A extends Action = AnyAction, E = undefined> = Middleware<ThunkDispatch<S, E, A>, S, ThunkDispatch<S, E, A>>;

test/typescript.ts

@@ -6,6 +6,7 @@ import {
 
 import thunk, {
   ThunkAction,
+  ThunkActionDispatch,
   ThunkMiddleware,
 } from '../index';
 
@@ -67,14 +68,22 @@ function promiseThunkAction(): ThunkResult<Promise<boolean>> {
 
 const standardAction = () => ({ type: 'FOO' });
 
+interface ActionDispatchs {
+  anotherThunkAction: ThunkActionDispatch<typeof anotherThunkAction>;
+  promiseThunkAction: ThunkActionDispatch<typeof promiseThunkAction>;
+  standardAction: typeof standardAction;
+}
+
 // test that bindActionCreators correctly returns actions responses of ThunkActions
 // also ensure standard action creators still work as expected
-const actions = bindActionCreators({
+const actions: ActionDispatchs = bindActionCreators({
   anotherThunkAction,
   promiseThunkAction,
   standardAction,
 }, store.dispatch);
 
+
+
 actions.anotherThunkAction() === 'hello';
 // typings:expect-error
 actions.anotherThunkAction() === false;