RN: Flowify Remaining Files (#51822)

Summary:
Pull Request resolved: #51822

Adds `flow` to the remaining files without it, in React Native.

After this, every `*.{flow,js}` file in React Native will have either `flow` or `noflow`.

Changelog:
[Internal]

Reviewed By: NickGerleman

Differential Revision: D75980238

fbshipit-source-id: 84cd88e4eb0b0b1dc69df247de79a75c2119bf96

Author: yungsters

packages/debugger-shell/src/electron/index.js

@@ -4,15 +4,15 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @flow
+ * @flow strict-local
  * @format
  */
 
 /*::
 export type * from './index.flow';
 */
 
-if (!process.env.BUILD_EXCLUDE_BABEL_REGISTER) {
+if (!Boolean(process.env.BUILD_EXCLUDE_BABEL_REGISTER)) {
   require('../../../../scripts/babel-register').registerForMonorepo();
 }
 

packages/debugger-shell/src/electron/preload.js

@@ -4,23 +4,27 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow strict-local
  * @format
  */
 
+// $FlowFixMe[prop-missing]
 const {contextBridge, ipcRenderer} = require('electron');
 
 contextBridge.executeInMainWorld({
   func: ipcDevTools => {
     let didDecorateInspectorFrontendHostInstance = false;
     // reactNativeDecorateInspectorFrontendHostInstance was introduced in
     // https://github.com/facebook/react-native-devtools-frontend/pull/168
-    globalThis.reactNativeDecorateInspectorFrontendHostInstance =
-      InspectorFrontendHostInstance => {
-        didDecorateInspectorFrontendHostInstance = true;
-        InspectorFrontendHostInstance.bringToFront = () => {
-          ipcDevTools.bringToFront();
-        };
+    // $FlowIgnore[prop-missing]
+    globalThis.reactNativeDecorateInspectorFrontendHostInstance = (
+      InspectorFrontendHostInstance: $FlowFixMe,
+    ) => {
+      didDecorateInspectorFrontendHostInstance = true;
+      InspectorFrontendHostInstance.bringToFront = () => {
+        ipcDevTools.bringToFront();
       };
+    };
 
     document.addEventListener('DOMContentLoaded', () => {
       if (!didDecorateInspectorFrontendHostInstance) {