[코드리뷰 요청] 과제2 완료

.eslintrc.js

@@ -3,20 +3,15 @@ module.exports = {
     browser: true,
     es2021: true,
   },
-  extends: [
-    'plugin:react/recommended',
-    'airbnb',
-  ],
+  extends: ['plugin:react/recommended', 'airbnb'],
   parserOptions: {
     ecmaFeatures: {
       jsx: true,
     },
     ecmaVersion: 12,
     sourceType: 'module',
   },
-  plugins: [
-    'react',
-  ],
+  plugins: ['react'],
   globals: {
     Atomics: 'readonly',
     SharedArrayBuffer: 'readonly',
@@ -45,8 +40,9 @@ module.exports = {
     'object-curly-spacing': ['error', 'always'],
     'key-spacing': ['error', { mode: 'strict' }],
     'arrow-spacing': ['error', { before: true, after: true }],
-
+    'react/jsx-filename-extension': ['warn', { extensions: ['.js', '.jsx'] }],
     'react/prop-types': 'off',
     'react/react-in-jsx-scope': 'off',
+    'import/no-unresolved': 'off',
   },
 };

package.json

@@ -32,6 +32,7 @@
     "webpack-dev-server": "^4.8.1"
   },
   "dependencies": {
+    "nanoid": "^4.0.2",
     "react": "^17.0.2",
     "react-dom": "^17.0.2"
   }

src/App.jsx

@@ -0,0 +1,36 @@
+import React, { useState } from 'react';
+import { nanoid } from 'nanoid';
+import Header from './components/Header';
+import TodoForm from './components/TodoForm';
+import TodoLists from './components/TodoLists';
+
+export default function App() {
+  const [newOrUpdateTodo, setNewOrUpdateTodo] = useState('');
+  const [todos, setTodos] = useState([]);
+
+  const handleSubmit = (e) => {
+    e.preventDefault();
+    setTodos([...todos, { id: nanoid(6), text: newOrUpdateTodo }]);
+    setNewOrUpdateTodo('');
+  };
+
+  const handleChange = (e) => {
+    setNewOrUpdateTodo(e.target.value);
+  };
+
+  const handleClickComplete = (clickedItemID) => {
+    setTodos(todos.filter((item) => item.id !== clickedItemID));
+  };
+
+  return (
+    <div>
+      <Header />
+      <TodoForm
+        newOrUpdateTodo={newOrUpdateTodo}
+        onSubmit={handleSubmit}
+        onChange={handleChange}
+      />
+      <TodoLists todos={todos} onClickComplete={handleClickComplete} />
+    </div>
+  );
+}

src/components/Header.jsx

@@ -0,0 +1,5 @@
+import React from 'react';
+
+export default function Header() {
+  return <div>TO-DO</div>;
+}

src/components/NoneTodos.jsx

@@ -0,0 +1,5 @@
+import React from 'react';
+
+export default function NoneTodos() {
+  return <span>할 일이 없어요!</span>;
+}

src/components/ShowTodos.jsx

@@ -0,0 +1,16 @@
+import React from 'react';
+
+export default function ShowTodos({ todos, onClickComplete }) {
+  return (
+    <ol>
+      {todos.map(({ id, text }) => (
+        <li key={id}>
+          <span>{text}</span>
+          <button type="button" id={id} onClick={() => onClickComplete(id)}>
+            완료
+          </button>
+        </li>
+      ))}
+    </ol>
+  );
+}

src/components/TodoForm.jsx

@@ -0,0 +1,10 @@
+import React from 'react';
+
+export default function TodoForm({ newOrUpdateTodo, onSubmit, onChange }) {
+  return (
+    <form onSubmit={onSubmit}>
+      <input type="text" value={newOrUpdateTodo} onChange={onChange} />
+      <button type="submit">추가</button>
+    </form>
+  );
+}

src/components/TodoLists.jsx

@@ -0,0 +1,12 @@
+import React from 'react';
+import NoneTodos from './NoneTodos';
+import ShowTodos from './ShowTodos';
+
+const isEmpty = (arr = []) => arr.length === 0;
+
+export default function TodoLists({ todos, onClickComplete }) {
+  if (isEmpty(todos)) {
+    return <NoneTodos />;
+  }
+  return <ShowTodos todos={todos} onClickComplete={onClickComplete} />;
+}

src/index.jsx

@@ -0,0 +1,5 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+ReactDOM.render(<App />, document.getElementById('app'));