diff --git a/Libraries/Components/MaskedView/MaskedViewIOS.ios.js b/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
index 9f24f4edcf8c53..b0d1ab490a98e7 100644
--- a/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
+++ b/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
@@ -17,7 +17,9 @@ const requireNativeComponent = require('requireNativeComponent');
 
 import type {ViewProps} from 'ViewPropTypes';
 
-type Props = ViewProps & {
+type Props = {
+  ...ViewProps,
+
   children: any,
   /**
    * Should be a React element to be rendered and applied as the
diff --git a/Libraries/Components/TabBarIOS/TabBarIOS.ios.js b/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
index 686483f3b23219..42d6cb238e90f6 100644
--- a/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
+++ b/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
@@ -22,19 +22,20 @@ const requireNativeComponent = require('requireNativeComponent');
 import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
 import type {ViewProps} from 'ViewPropTypes';
 
-class TabBarIOS extends React.Component<
-  ViewProps & {
-    style?: DangerouslyImpreciseStyleProp,
-    unselectedTintColor?: string,
-    tintColor?: string,
-    unselectedItemTintColor?: string,
-    barTintColor?: string,
-    barStyle?: 'default' | 'black',
-    translucent?: boolean,
-    itemPositioning?: 'fill' | 'center' | 'auto',
-    children: React.Node,
-  },
-> {
+type Props = $ReadOnly<{|
+  ...ViewProps,
+  style?: DangerouslyImpreciseStyleProp,
+  unselectedTintColor?: string,
+  tintColor?: string,
+  unselectedItemTintColor?: string,
+  barTintColor?: string,
+  barStyle?: 'default' | 'black',
+  translucent?: boolean,
+  itemPositioning?: 'fill' | 'center' | 'auto',
+  children: React.Node,
+|}>;
+
+class TabBarIOS extends React.Component<Props> {
   static Item = TabBarItemIOS;
 
   static propTypes = {
diff --git a/Libraries/Components/View/ViewPropTypes.js b/Libraries/Components/View/ViewPropTypes.js
index 61406b2ca4f6ba..1d5f193c62de9e 100644
--- a/Libraries/Components/View/ViewPropTypes.js
+++ b/Libraries/Components/View/ViewPropTypes.js
@@ -35,7 +35,7 @@ const stylePropType = StyleSheetPropType(ViewStylePropTypes);
 export type ViewLayout = Layout;
 export type ViewLayoutEvent = LayoutEvent;
 
-export type ViewProps = {
+export type ViewProps = $ReadOnly<{|
   // There's no easy way to create a different type if (Platform.isTVOS):
   // so we must include TVViewProps
   ...TVViewProps,
@@ -79,7 +79,7 @@ export type ViewProps = {
   shouldRasterizeIOS?: boolean,
   collapsable?: boolean,
   needsOffscreenAlphaCompositing?: boolean,
-};
+|}>;
 
 module.exports = {
   /**