Strip dev only modules

Summary: public

Make sure some modules that are only available in dev mode are only
included in dev bundles.

Depends on: D2663838

Reviewed By: davidaurelio

Differential Revision: D2663889

fb-gh-sync-id: 42be40b865ef305828b3519556125af090ec61f4

Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js

@@ -180,9 +180,11 @@ function setUpNumber() {
 
 function setUpDevTools() {
   // not when debugging in chrome
-  if (__DEV__ && !window.document && require('Platform').OS === 'ios') {
-    var setupDevtools = require('setupDevtools');
-    setupDevtools();
+  if (__DEV__) { // TODO(9123099) Strip `__DEV__ &&`
+    if (!window.document && require('Platform').OS === 'ios') {
+      var setupDevtools = require('setupDevtools');
+      setupDevtools();
+    }
   }
 }
 
@@ -202,6 +204,8 @@ setUpDevTools();
 
 // Just to make sure the JS gets packaged up. Wait until the JS environment has
 // been initialized before requiring them.
-require('RCTDebugComponentOwnership');
+if (__DEV__) {
+  require('RCTDebugComponentOwnership');
+}
 require('RCTDeviceEventEmitter');
 require('PerformanceLogger');

Libraries/ReactIOS/renderApplication.ios.js

@@ -10,16 +10,17 @@
  */
 'use strict';
 
-var Inspector = require('Inspector');
 var RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
 var React = require('React');
 var StyleSheet = require('StyleSheet');
 var Subscribable = require('Subscribable');
 var View = require('View');
-var WarningBox = require('WarningBox');
 
 var invariant = require('invariant');
 
+var Inspector = __DEV__ ? require('Inspector') : null;
+var WarningBox = __DEV__ ? require('WarningBox') : null;
+
 var AppContainer = React.createClass({
   mixins: [Subscribable.Mixin],
 
@@ -28,7 +29,7 @@ var AppContainer = React.createClass({
   },
 
   toggleElementInspector: function() {
-    var inspector = this.state.inspector
+    var inspector = !__DEV__ || this.state.inspector
       ? null
       : <Inspector
           rootTag={this.props.rootTag}