Update starter code

package.json

@@ -1,14 +1,15 @@
 {
-  "name": "starter-code",
+  "name": "lab-react-ironbeers",
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@testing-library/jest-dom": "^4.2.4",
-    "@testing-library/react": "^9.3.2",
-    "@testing-library/user-event": "^7.1.2",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
-    "react-scripts": "3.4.1"
+    "@testing-library/jest-dom": "^5.11.4",
+    "@testing-library/react": "^11.1.0",
+    "@testing-library/user-event": "^12.1.10",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "react-scripts": "4.0.3",
+    "web-vitals": "^1.0.1"
   },
   "scripts": {
     "start": "react-scripts start",
@@ -17,7 +18,10 @@
     "eject": "react-scripts eject"
   },
   "eslintConfig": {
-    "extends": "react-app"
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
   },
   "browserslist": {
     "production": [

src/App.js

@@ -1,4 +1,3 @@
-import React from 'react';
 import logo from './logo.svg';
 import './App.css';
 

src/App.test.js

@@ -1,9 +1,8 @@
-import React from 'react';
-import { render } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
 import App from './App';
 
 test('renders learn react link', () => {
-  const { getByText } = render(<App />);
-  const linkElement = getByText(/learn react/i);
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
   expect(linkElement).toBeInTheDocument();
 });

src/index.js

@@ -2,7 +2,7 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import './index.css';
 import App from './App';
-import * as serviceWorker from './serviceWorker';
+import reportWebVitals from './reportWebVitals';
 
 ReactDOM.render(
   <React.StrictMode>
@@ -11,7 +11,7 @@ ReactDOM.render(
   document.getElementById('root')
 );
 
-// If you want your app to work offline and load faster, you can change
-// unregister() to register() below. Note this comes with some pitfalls.
-// Learn more about service workers: https://bit.ly/CRA-PWA
-serviceWorker.unregister();
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

src/reportWebVitals.js

@@ -0,0 +1,13 @@
+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

src/setupTests.js

@@ -2,4 +2,4 @@
 // allows you to do things like:
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
-import '@testing-library/jest-dom/extend-expect';
+import '@testing-library/jest-dom';