Export native modules without RCT or RK prefix

Reviewed By: mmmulani

Differential Revision: D3901600

fbshipit-source-id: 7d4a027f0f2478e2a9ac9916326b91279bec3cb3

Libraries/BatchedBridge/BatchedBridgedModules/NativeModules.js

@@ -14,27 +14,6 @@
 const BatchedBridge = require('BatchedBridge');
 const RemoteModules = BatchedBridge.RemoteModules;
 
-function normalizePrefix(moduleName: string): string {
-  return moduleName.replace(/^(RCT|RK)/, '');
-}
-
-/**
- * Dirty hack to support old (RK) and new (RCT) native module name conventions.
- * TODO 10487027: kill this behaviour
- */
-Object.keys(RemoteModules).forEach((moduleName) => {
-  const strippedName = normalizePrefix(moduleName);
-  if (RemoteModules['RCT' + strippedName] && RemoteModules['RK' + strippedName]) {
-    throw new Error(
-      'Module cannot be registered as both RCT and RK: ' + moduleName
-    );
-  }
-  if (strippedName !== moduleName) {
-    RemoteModules[strippedName] = RemoteModules[moduleName];
-    delete RemoteModules[moduleName];
-  }
-});
-
 /**
  * Define lazy getters for each module.
  * These will return the module if already loaded, or load it if not.

Libraries/Utilities/UIManager.js

@@ -11,8 +11,8 @@
  */
 'use strict';
 
-const Platform = require('Platform');
 const NativeModules = require('NativeModules');
+const Platform = require('Platform');
 const { UIManager } = NativeModules;
 
 const findNodeHandle = require('react/lib/findNodeHandle');
@@ -64,11 +64,6 @@ UIManager.takeSnapshot = async function(
  * namespace instead of UIManager, unlike Android.
  */
 if (Platform.OS === 'ios') {
-  // Copied from NativeModules
-  function normalizePrefix(moduleName: string): string {
-    return moduleName.replace(/^(RCT|RK)/, '');
-  }
-
   Object.keys(UIManager).forEach(viewName => {
     const viewConfig = UIManager[viewName];
     if (viewConfig.Manager) {
@@ -82,7 +77,7 @@ if (Platform.OS === 'ios') {
             return constants;
           }
           constants = {};
-          const viewManager = NativeModules[normalizePrefix(viewConfig.Manager)];
+          const viewManager = NativeModules[viewConfig.Manager];
           viewManager && Object.keys(viewManager).forEach(key => {
             const value = viewManager[key];
             if (typeof value !== 'function') {
@@ -102,7 +97,7 @@ if (Platform.OS === 'ios') {
             return commands;
           }
           commands = {};
-          const viewManager = NativeModules[normalizePrefix(viewConfig.Manager)];
+          const viewManager = NativeModules[viewConfig.Manager];
           let index = 0;
           viewManager && Object.keys(viewManager).forEach(key => {
             const value = viewManager[key];

React/Base/RCTBatchedBridge.m

@@ -235,9 +235,6 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithDelegate:(id<RCTBridgeDelegate>)dele
 - (NSArray *)configForModuleName:(NSString *)moduleName
 {
   RCTModuleData *moduleData = _moduleDataByName[moduleName];
-  if (!moduleData) {
-    moduleData = _moduleDataByName[[@"RCT" stringByAppendingString:moduleName]];
-  }
   if (moduleData) {
 #if RCT_DEV
     if ([self.delegate respondsToSelector:@selector(whitelistedModulesForBridge:)]) {
@@ -246,9 +243,8 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithDelegate:(id<RCTBridgeDelegate>)dele
                 @"Required config for %@, which was not whitelisted", moduleName);
     }
 #endif
-    return moduleData.config;
   }
-  return (id)kCFNull;
+  return moduleData.config;
 }
 
 - (void)initModulesWithDispatchGroup:(dispatch_group_t)dispatchGroup

React/Base/RCTBridge.m

@@ -67,9 +67,13 @@ NSString *RCTBridgeModuleNameForClass(Class cls)
   if (name.length == 0) {
     name = NSStringFromClass(cls);
   }
+
   if ([name hasPrefix:@"RK"]) {
-    name = [name stringByReplacingCharactersInRange:(NSRange){0,@"RK".length} withString:@"RCT"];
+    name = [name substringFromIndex:2];
+  } else if ([name hasPrefix:@"RCT"]) {
+    name = [name substringFromIndex:3];
   }
+
   return name;
 }
 

React/Executors/RCTJSCExecutor.mm

@@ -357,7 +357,7 @@ static NSThread *newJavaScriptThread(void)
       RCT_PROFILE_BEGIN_EVENT(RCTProfileTagAlways, @"nativeRequireModuleConfig", @{ @"moduleName": moduleName });
       NSArray *result = [strongSelf->_bridge configForModuleName:moduleName];
       RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"js_call,config");
-      return result;
+      return RCTNullIfNil(result);
     };
 
     context[@"nativeFlushQueueImmediate"] = ^(NSArray<NSArray *> *calls){

React/Views/RCTComponentData.m

@@ -16,6 +16,7 @@
 #import "RCTShadowView.h"
 #import "RCTUtils.h"
 #import "UIView+React.h"
+#import "RCTBridgeModule.h"
 
 typedef void (^RCTPropBlock)(id<RCTComponent> view, id json);
 
@@ -58,11 +59,23 @@ typedef void (^RCTPropBlock)(id<RCTComponent> view, id json);
     _viewPropBlocks = [NSMutableDictionary new];
     _shadowPropBlocks = [NSMutableDictionary new];
 
-    _name = RCTBridgeModuleNameForClass(_managerClass);
-    RCTAssert(_name.length, @"Invalid moduleName '%@'", _name);
-    if ([_name hasSuffix:@"Manager"]) {
-      _name = [_name substringToIndex:_name.length - @"Manager".length];
+    // Hackety hack, this partially re-implements RCTBridgeModuleNameForClass
+    // We want to get rid of RCT and RK prefixes, but a lot of JS code still references
+    // view names by prefix. So, while RCTBridgeModuleNameForClass now drops these
+    // prefixes by default, we'll still keep them around here.
+    NSString *name = [managerClass moduleName];
+    if (name.length == 0) {
+      name = NSStringFromClass(managerClass);
     }
+    if ([name hasPrefix:@"RK"]) {
+      name = [name stringByReplacingCharactersInRange:(NSRange){0, @"RK".length} withString:@"RCT"];
+    }
+    if ([name hasSuffix:@"Manager"]) {
+      name = [name substringToIndex:name.length - @"Manager".length];
+    }
+
+    RCTAssert(name.length, @"Invalid moduleName '%@'", name);
+    _name = name;
 
     _implementsUIBlockToAmendWithShadowViewRegistry = NO;
     Class cls = _managerClass;