Add test for nested selectors

typescript_test/test.ts

@@ -34,6 +34,32 @@ function testSelector() {
   );
 }
 
+function testNestedSelector() {
+  type State = {foo: string, bar: number, baz: boolean};
+
+  const selector = createSelector(
+    createSelector(
+      (state: State) => state.foo,
+      (state: State) => state.bar,
+      (foo, bar) => ({foo, bar}),
+    ),
+    (state: State) => state.baz,
+    ({foo, bar}, baz) => {
+      const foo1: string = foo;
+      // typings:expect-error
+      const foo2: number = foo;
+
+      const bar1: number = bar;
+      // typings:expect-error
+      const bar2: string = bar;
+
+      const baz1: boolean = baz;
+      // typings:expect-error
+      const baz2: string = baz;
+    },
+  )
+}
+
 type Component<P> = (props: P) => any;
 
 declare function connect<S, P, R>(selector: ParametricSelector<S, P, R>):