02_lesson: create separate selector for selectAllPosts

02_lesson_starter/src/features/posts/PostsList.js

@@ -1,7 +1,8 @@
 import { useSelector } from "react-redux";
+import { selectAllPosts } from "./postsSlice";
 
 const PostsList = () => {
-  const posts = useSelector((state) => state.posts);
+  const posts = useSelector(selectAllPosts);
 
   const renderedPosts = posts.map((post) => (
     <article key={post.id}>

02_lesson_starter/src/features/posts/postsSlice.js

@@ -19,4 +19,6 @@ const postsSlice = createSlice({
   reducers: {},
 });
 
+export const selectAllPosts = (state) => state.posts;
+
 export default postsSlice.reducer;