[ReactNative] s/RK/RCT in OSS

Libraries/Utilities/nativeModulePrefixDuplicator.js

@@ -0,0 +1,25 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule nativeModulePrefixDuplicator
+ */
+'use strict';
+
+// Dirty hack to support old (RK) and new (RCT) native module name conventions
+function nativeModulePrefixDuplicator(modules) {
+  Object.keys(modules).forEach((moduleName) => {
+    var rkModuleName = moduleName.replace(/^RCT/, 'RK');
+    var rctModuleName = moduleName.replace(/^RK/, 'RCT');
+    if (rkModuleName !== rctModuleName) {
+      if (modules[rkModuleName] && modules[rctModuleName]) {
+        throw new Error(
+          'Module cannot be registered as both RCT and RK: ' + moduleName
+        );
+      }
+      modules[rkModuleName] = modules[moduleName];
+      modules[rctModuleName] = modules[moduleName];
+    }
+  });
+}
+
+module.exports = nativeModulePrefixDuplicator;