fix: add 'bounces' prop type only to PagerScroll

Author: satya164

example/src/TopBarIconExample.js

@@ -69,7 +69,7 @@ export default class TopBarIconExample extends React.Component<*, State> {
         renderScene={this._renderScene}
         renderTabBar={this._renderTabBar}
         onIndexChange={this._handleIndexChange}
-        bounces // only iOS
+        bounces
       />
     );
   }

example/src/TopBarTextExample.js

@@ -73,7 +73,7 @@ export default class TopBarTextExample extends React.Component<*, State> {
         renderTabBar={this._renderTabBar}
         onIndexChange={this._handleIndexChange}
         initialLayout={initialLayout}
-        bounces // only iOS
+        bounces
       />
     );
   }

src/PagerScroll.js

@@ -1,6 +1,7 @@
 /* @flow */
 
 import * as React from 'react';
+import PropTypes from 'prop-types';
 import { View, ScrollView, StyleSheet } from 'react-native';
 import { PagerRendererPropType } from './PropTypes';
 import type { PagerRendererProps } from './TypeDefinitions';
@@ -22,13 +23,18 @@ type State = {|
   initialOffset: {| x: number, y: number |},
 |};
 
-type Props<T> = PagerRendererProps<T>;
+type Props<T> = PagerRendererProps<T> & {
+  bounces: boolean,
+};
 
 export default class PagerScroll<T: *> extends React.Component<
   Props<T>,
   State
 > {
-  static propTypes = PagerRendererPropType;
+  static propTypes = {
+    ...PagerRendererPropType,
+    bounces: PropTypes.bool.isRequired,
+  };
 
   static defaultProps = {
     canJumpToTab: () => true,

src/PropTypes.js

@@ -40,7 +40,6 @@ export const PagerRendererPropType = {
   jumpTo: PropTypes.func.isRequired,
   animationEnabled: PropTypes.bool,
   swipeEnabled: PropTypes.bool,
-  bounces: PropTypes.bool.isRequired,
   useNativeDriver: PropTypes.bool,
   onSwipeStart: PropTypes.func,
   onSwipeEnd: PropTypes.func,

src/TypeDefinitions.js

@@ -46,7 +46,6 @@ export type PagerRendererProps<T> = PagerCommonProps<T> & {
 export type PagerCommonProps<T> = {
   animationEnabled?: boolean,
   swipeEnabled?: boolean,
-  bounces?: boolean,
   onSwipeStart?: () => mixed,
   onSwipeEnd?: () => mixed,
   onAnimationEnd?: () => mixed,