react
diff --git a/‎packages/react-native/Libraries/Lists/FlatList.js‎
Lines changed: 1 addition & 2 deletions b/‎packages/react-native/Libraries/Lists/FlatList.js‎
Lines changed: 1 addition & 2 deletions
@@ -451,8 +451,7 @@ class FlatList<ItemT = any> extends React.PureComponent<FlatListProps<ItemT>> {
     }
   }
 
-  // $FlowFixMe[missing-local-annot]
-  componentDidUpdate(prevProps: FlatListProps<ItemT>) {
+  componentDidUpdate(prevProps: FlatListProps<ItemT>): void {
     invariant(
       prevProps.numColumns === this.props.numColumns,
       'Changing numColumns on the fly is not supported. Change the key prop on FlatList when ' +
Original file line number	Diff line number	Diff line change
`@@ -451,8 +451,7 @@ class FlatList<ItemT = any> extends React.PureComponent<FlatListProps<ItemT>> {`
`451`	`451`	`}`
`452`	`452`	`}`
`453`	`453`
`454`		`- // $FlowFixMe[missing-local-annot]`
`455`		`- componentDidUpdate(prevProps: FlatListProps<ItemT>) {`
	`454`	`+ componentDidUpdate(prevProps: FlatListProps<ItemT>): void {`
`456`	`455`	`invariant(`
`457`	`456`	`prevProps.numColumns === this.props.numColumns,`
`458`	`457`	`'Changing numColumns on the fly is not supported. Change the key prop on FlatList when ' +`