improved how certain modules get inlined for fb and cjs

scripts/rollup/build.js

@@ -142,8 +142,8 @@ function getCommonJsConfig(bundleType) {
       // wrapped in __DEV__
       return {
         ignore: [
-          'ReactPerf',
-          'ReactTestUtils',
+          'react-dom/lib/ReactPerf',
+          'react-dom/lib/ReactTestUtils',
         ],
       };
   }
@@ -153,7 +153,7 @@ function getPlugins(entry, babelOpts, paths, filename, bundleType) {
   const plugins = [
     replace(
       Object.assign(
-        replaceInternalModules(),
+        replaceInternalModules(bundleType),
         replaceFbjsModuleAliases(bundleType)
       )
     ),

scripts/rollup/modules.js

@@ -52,13 +52,21 @@ function getInternalModules() {
   };
 }
 
-function replaceInternalModules() {
-  return {
-    'react-dom/lib/ReactPerf': resolve('./src/renderers/shared/ReactPerf.js'),
-    'react-dom/lib/ReactTestUtils': resolve('./src/test/ReactTestUtils.js'),
-    'react-dom/lib/ReactInstanceMap': resolve('./src/renderers/shared/shared/ReactInstanceMap.js'),
-    'react-dom': resolve('./src/renderers/dom/ReactDOM.js'),
-  };
+function replaceInternalModules(bundleType) {
+  switch (bundleType) {
+    case bundleTypes.DEV:
+    case bundleTypes.PROD:
+    case bundleTypes.NODE:
+      // we inline these modules in the bundles rather than leave them as external
+      return {
+        'react-dom/lib/ReactPerf': resolve('./src/renderers/shared/ReactPerf.js'),
+        'react-dom/lib/ReactTestUtils': resolve('./src/test/ReactTestUtils.js'),
+        'react-dom/lib/ReactInstanceMap': resolve('./src/renderers/shared/shared/ReactInstanceMap.js'),
+        'react-dom': resolve('./src/renderers/dom/ReactDOM.js'),
+      };
+    case bundleTypes.FB:
+      return {};
+  }
 }
 
 function getFbjsModuleAliases(bundleType) {