[react-native] Support returning null from a component

Author: sophiebits

Libraries/Components/View/View.js

@@ -12,7 +12,9 @@
 
 var NativeMethodsMixin = require('NativeMethodsMixin');
 var PropTypes = require('ReactPropTypes');
-var React = require('React');
+var ReactClass = require('ReactClass');
+var ReactElement = require('ReactElement');
+var ReactIOSComponentMixin = require('ReactIOSComponentMixin');
 var ReactIOSViewAttributes = require('ReactIOSViewAttributes');
 var StyleSheetPropType = require('StyleSheetPropType');
 var ViewStylePropTypes = require('ViewStylePropTypes');
@@ -42,8 +44,8 @@ var stylePropType = StyleSheetPropType(ViewStylePropTypes);
  * `View`s are designed to be used with `StyleSheet`s for clarity and
  * performance, although inline styles are also supported.
  */
-var View = React.createClass({
-  mixins: [NativeMethodsMixin],
+var View = ReactClass.createClass({
+  mixins: [NativeMethodsMixin, ReactIOSComponentMixin],
 
   /**
    * `NativeMethodsMixin` will look for this when invoking `setNativeProps`. We
@@ -138,7 +140,7 @@ var View = React.createClass({
   },
 
   render: function() {
-    return <RCTView {...this.props} />;
+    return ReactElement.createElement(RCTView, this.props);
   },
 });
 

Libraries/ReactIOS/ReactIOSDefaultInjection.js

@@ -24,6 +24,7 @@ var NodeHandle = require('NodeHandle');
 var ReactClass = require('ReactClass');
 var ReactComponentEnvironment = require('ReactComponentEnvironment');
 var ReactDefaultBatchingStrategy = require('ReactDefaultBatchingStrategy');
+var ReactEmptyComponent = require('ReactEmptyComponent');
 var ReactInstanceHandles = require('ReactInstanceHandles');
 var ReactIOSComponentEnvironment = require('ReactIOSComponentEnvironment');
 var ReactIOSComponentMixin = require('ReactIOSComponentMixin');
@@ -35,6 +36,7 @@ var ReactNativeComponent = require('ReactNativeComponent');
 var ReactUpdates = require('ReactUpdates');
 var ResponderEventPlugin = require('ResponderEventPlugin');
 var UniversalWorkerNodeHandle = require('UniversalWorkerNodeHandle');
+var View = require('View');
 
 // Just to ensure this gets packaged, since its only caller is from Native.
 require('RCTEventEmitter');
@@ -77,6 +79,8 @@ function inject() {
     ReactIOSComponentEnvironment
   );
 
+  ReactEmptyComponent.injection.injectEmptyComponent(View);
+
   EventPluginUtils.injection.injectMount(ReactIOSMount);
 
   ReactClass.injection.injectMixin(ReactIOSComponentMixin);