Copied over system item typing and comments

build/npm/navigation-react-native/navigation.react.native.d.ts

@@ -12,7 +12,13 @@ export function addNavigateHandlers(stateNavigator: StateNavigator | StateNaviga
  * Defines the Scene Props contract
  */
 export interface SceneProps {
+    /**
+     * The location of the scene in the stack
+     */
     crumb?: number;
+    /**
+     * Renders the scene for the State and data
+     */
     renderScene?: (state: State, data: any) => ReactNode;
 }
 
@@ -35,8 +41,24 @@ export class RightBarIOS extends Component { }
  * Defines the Bar Button Props contract
  */
 export interface BarButtonIOSProps {
+    /**
+     * The button title
+     */
     title?: string;
+    /**
+     * The button image
+     */
     image?: ImageURISource;
+    /**
+     * The button system item
+     */
+    systemItem?: 'done' | 'cancel' | 'edit' | 'save' | 'add' | 'flexibleSpace'
+        | 'fixedSpace' | 'compose' | 'reply' | 'action' | 'organize'
+        | 'bookmarks' | 'search' | 'refresh' | 'stop' | 'camera'
+        | 'trash' | 'play' | 'pause' | 'rewind' | 'fastForward';
+    /**
+     * Handles button click events
+     */
     onPress?: () => void;
 }