fix broken JS

src/index.js

@@ -30,6 +30,35 @@ const app = (
   </React.StrictMode>
 )
 
+if (process.env.BUGSNAG_KEY) {
+  Bugsnag.start({
+    apiKey: process.env.BUGSNAG_KEY,
+    plugins: [new BugsnagPluginReact()],
+    enabledReleaseStages: ['production', 'staging'],
+    releaseStage: process.env.NODE_ENV
+  })
+
+  const ErrorBoundary = Bugsnag.getPlugin('react')
+    .createErrorBoundary(React)
+
+  ReactDOM.render(
+    <ErrorBoundary>
+      {app}
+    </ErrorBoundary>,
+    document.getElementById('root')
+  );
+}else{
+  ReactDOM.render(
+    app,
+    document.getElementById('root')
+  );
+}
+
+// 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();
+
 import { inject } from '@vercel/analytics';
 
-inject();
+inject();