add flow types

Author: hannojg

packages/react-native/Libraries/Components/TextInput/AndroidTextInputNativeComponent.js

@@ -359,7 +359,14 @@ export type NativeProps = $ReadOnly<{|
    * TODO: differentiate between onChange and onChangeText
    */
   onChange?: ?BubblingEventHandler<
-    $ReadOnly<{|target: Int32, eventCount: Int32, text: string|}>,
+    $ReadOnly<{|
+      target: Int32,
+      eventCount: Int32,
+      text: string,
+      start: Int32,
+      count: Int32,
+      before: Int32,
+    |}>,
   >,
 
   /**

packages/react-native/Libraries/Components/TextInput/TextInput.flow.js

@@ -31,6 +31,9 @@ export type ChangeEvent = SyntheticEvent<
     eventCount: number,
     target: number,
     text: string,
+    start: number,
+    count: number,
+    before: number,
   |}>,
 >;
 

packages/react-native/Libraries/Components/TextInput/TextInput.js

@@ -69,6 +69,9 @@ export type ChangeEvent = SyntheticEvent<
     eventCount: number,
     target: number,
     text: string,
+    start: number,
+    count: number,
+    before: number,
   |}>,
 >;
 

packages/rn-tester/js/examples/TextInput/TextInputSharedExamples.js

@@ -11,6 +11,7 @@
 'use strict';
 
 import type {RNTesterModuleExample} from '../../types/RNTesterTypes';
+import type {ChangeEvent} from 'react-native/Libraries/Components/TextInput/TextInput';
 import type {TextStyle} from 'react-native/Libraries/StyleSheet/StyleSheet';
 
 import RNTesterButton from '../../components/RNTesterButton';
@@ -816,7 +817,7 @@ function MultilineStyledTextInput({
 function PartialUpdatesTextInput() {
   const [value, setValue] = useState('');
 
-  const onChange = ({nativeEvent}) => {
+  const onChange = ({nativeEvent}: ChangeEvent) => {
     console.log('onChange', nativeEvent);
     setValue((previousValue) => {
       const {count, start, before, text: fullNewText} = nativeEvent;