Add React.StrictMode to default templates (#8558)

Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
facebook · Mar 10, 2020 · 6adb82a · 6adb82a
1 parent a452ddc
commit 6adb82a
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Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/packages/cra-template-typescript/template/src/index.tsx b/packages/cra-template-typescript/template/src/index.tsx
@@ -4,7 +4,12 @@ import './index.css';
 import App from './App';
 import * as serviceWorker from './serviceWorker';
 
-ReactDOM.render(<App />, document.getElementById('root'));
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  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.

diff --git a/packages/cra-template/template/src/index.js b/packages/cra-template/template/src/index.js
@@ -4,7 +4,12 @@ import './index.css';
 import App from './App';
 import * as serviceWorker from './serviceWorker';
 
-ReactDOM.render(<App />, document.getElementById('root'));
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  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.