Refactor as Zustand

package.json

@@ -12,7 +12,8 @@
     "react-redux": "8.1.1",
     "react-scripts": "5.0.1",
     "styled-components": "6.0.5",
-    "web-vitals": "^2.1.0"
+    "web-vitals": "^2.1.0",
+    "zustand": "4.3.9"
   },
   "scripts": {
     "start": "react-scripts start",

src/App.js

@@ -6,7 +6,7 @@ import TodoList from "./components/TodoList";
 const App = () => {
   return (
     <Layout>
-      <AppTitle>리덕스로 만드는 투두리스트</AppTitle>
+      <AppTitle>zustand로 만드는 투두리스트</AppTitle>
       <TodoInput />
       <TodoList />
     </Layout>

src/components/TodoInput.jsx

@@ -1,23 +1,20 @@
 import React, { useState } from "react";
 import { styled } from "styled-components";
-import { useDispatch } from "react-redux";
-import { addTodo } from "../redux/modules/todoSlice";
+import { useTodoStore } from "../store/useTodoStore";
 
 const TodoInput = () => {
   const [title, setTitle] = useState("");
   const [content, setContent] = useState("");
 
-  const dispatch = useDispatch();
+  const { addTodo } = useTodoStore((state) => state);
 
   const handleClick = () => {
-    dispatch(
-      addTodo({
-        id: Date.now(),
-        title,
-        content,
-        isDone: false,
-      })
-    );
+    addTodo({
+      id: Date.now(),
+      title,
+      content,
+      isDone: false,
+    });
   };
 
   return (

src/components/TodoItem.jsx

@@ -1,20 +1,19 @@
 import React from "react";
 import { styled } from "styled-components";
-import { useDispatch } from "react-redux";
-import { deleteTodo, updateTodo } from "../redux/modules/todoSlice";
+import { useTodoStore } from "../store/useTodoStore";
 
 const TodoItem = (props) => {
   const { todo } = props;
   const { id, title, content, isDone } = todo;
 
-  const dispatch = useDispatch();
+  const { deleteTodo, updateTodo } = useTodoStore((state) => state);
 
   const deleteTodoItem = (id) => {
-    dispatch(deleteTodo(id));
+    deleteTodo(id);
   };
 
   const updateTodoItem = (id) => {
-    dispatch(updateTodo(id));
+    updateTodo(id);
   };
 
   return (

src/components/TodoList.jsx

@@ -1,10 +1,10 @@
 import React from "react";
 import { styled } from "styled-components";
 import TodoItem from "./TodoItem";
-import { useSelector } from "react-redux";
+import { useTodoStore } from "../store/useTodoStore";
 
 const TodoList = () => {
-  const { todos } = useSelector((state) => state.todoReducer);
+  const todos = useTodoStore((state) => state.todos);
 
   return (
     <TodoListContainer>

src/index.js

@@ -1,15 +1,11 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
 import App from "./App";
-import { Provider } from "react-redux";
-import { store } from "./redux/config/configStore";
 
 const root = ReactDOM.createRoot(document.getElementById("root"));
 
 root.render(
-  <Provider store={store}>
-    <React.StrictMode>
-      <App />
-    </React.StrictMode>
-  </Provider>
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
 );

src/shared/Layout.jsx

@@ -1,8 +1,13 @@
-import React from "react";
+import React, { useEffect } from "react";
 import GlobalStyle from "../styles/GlobalStyle";
 import { styled } from "styled-components";
+import { fetchTodos } from "../store/useTodoStore";
 
 const Layout = ({ children }) => {
+  useEffect(() => {
+    fetchTodos();
+  }, []);
+
   return (
     <PageLayout>
       <GlobalStyle />

src/store/useTodoStore.js

@@ -0,0 +1,28 @@
+import { create } from "zustand";
+
+export const useTodoStore = create((set) => ({
+  todos: [],
+  setTodos: (todos) => set({ todos }),
+  addTodo: (newTodo) => set((state) => ({ todos: [...state.todos, newTodo] })),
+  updateTodo: (id) =>
+    set((state) => ({
+      todos: state.todos.map((todo) => {
+        if (todo.id === id) {
+          return { ...todo, isDone: !todo.isDone };
+        }
+        return todo;
+      }),
+    })),
+  deleteTodo: (id) =>
+    set((state) => ({ todos: state.todos.filter((todo) => todo.id !== id) })),
+}));
+
+export const fetchTodos = async () => {
+  const response = await fetch(
+    "https://jsonplaceholder.typicode.com/todos?_limit=3"
+  );
+  const todos = await response.json();
+  useTodoStore
+    .getState()
+    .setTodos(todos.map((todo) => ({ ...todo, isDone: false })));
+};

yarn.lock

@@ -9083,7 +9083,7 @@ url-parse@^1.5.3:
     querystringify "^2.1.1"
     requires-port "^1.0.0"
 
-use-sync-external-store@^1.0.0:
+use-sync-external-store@1.2.0, use-sync-external-store@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/use-sync-external-store/-/use-sync-external-store-1.2.0.tgz#7dbefd6ef3fe4e767a0cf5d7287aacfb5846928a"
   integrity sha512-eEgnFxGQ1Ife9bzYs6VLi8/4X6CObHMw9Qr9tPY43iKwsPw8xE8+EFsf/2cFZ5S3esXgpWgtSCtLNS41F+sKPA==
@@ -9649,3 +9649,10 @@ yocto-queue@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"
   integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
+
+zustand@4.3.9:
+  version "4.3.9"
+  resolved "https://registry.yarnpkg.com/zustand/-/zustand-4.3.9.tgz#a7d4332bbd75dfd25c6848180b3df1407217f2ad"
+  integrity sha512-Tat5r8jOMG1Vcsj8uldMyqYKC5IZvQif8zetmLHs9WoZlntTHmIoNM8TpLRY31ExncuUvUOXehd0kvahkuHjDw==
+  dependencies:
+    use-sync-external-store "1.2.0"