Mark unstable_batchedUpdates as deprecated

packages/react-native/index.js

@@ -368,6 +368,9 @@ module.exports = {
   get UIManager() {
     return require('./Libraries/ReactNative/UIManager').default;
   },
+  /**
+   * @deprecated Since 0.86, `unstable_batchedUpdates` is a no-op that synchronously invokes the callback. React batches updates automatically, so call the callback directly instead.
+   */
   unstable_batchedUpdates<T>(fn: (bookkeeping: T) => void, bookkeeping: T) {
     fn(bookkeeping);
   },

packages/react-native/index.js.flow

@@ -442,6 +442,9 @@ export * as Systrace from './Libraries/Performance/Systrace';
 export {default as ToastAndroid} from './Libraries/Components/ToastAndroid/ToastAndroid';
 export * as TurboModuleRegistry from './Libraries/TurboModule/TurboModuleRegistry';
 export {default as UIManager} from './Libraries/ReactNative/UIManager';
+/**
+ * @deprecated Since 0.86, `unstable_batchedUpdates` is a no-op that synchronously invokes the callback. React batches updates automatically, so call the callback directly instead.
+ */
 export function unstable_batchedUpdates<T>(
   fn: (bookkeeping: T) => void,
   bookkeeping: T,

packages/react-native/types_DEPRECATED/public/ReactNativeRenderer.d.ts

@@ -133,7 +133,10 @@ export interface GestureResponderHandlers {
 }
 
 /**
- * React Native also implements unstable_batchedUpdates
+ * @deprecated Since 0.86, `unstable_batchedUpdates` is a no-op that synchronously invokes the callback. React batches updates automatically, so call the callback directly instead.
  */
 export function unstable_batchedUpdates<A, R>(callback: (a: A) => R, a: A): R;
+/**
+ * @deprecated Since 0.86, `unstable_batchedUpdates` is a no-op that synchronously invokes the callback. React batches updates automatically, so call the callback directly instead.
+ */
 export function unstable_batchedUpdates<R>(callback: () => R): R;