RCT_EXTERN_MODULE Swift modules broken in Xcode 10.2

[kdawgwilk]

🐛 Bug Report

It appears Obj-C runtime got more strict with Swift ABI stability in Xcode 10.2 and now causes a crash at runtime when trying to load modules that have Swift implementations. This is the crash error:

Swift class extensions and categories on Swift classes are not allowed to have +load methods

To Reproduce

Create a RN NativeModule e.g.

BadgeHandler.m

#import <React/RCTBridgeModule.h>

@interface RCT_EXTERN_MODULE(BadgeHandler, NSObject)
    RCT_EXTERN_METHOD(setBadgeNumber:(int *)badgeNumber)
@end

BadgeHandler.swift

import UIKit

@objc(BadgeHandler)
class BadgeHandler: NSObject, RCTBridgeModule {
    static func moduleName() -> String! {
        return "BadgeHandler";
    }

    static func requiresMainQueueSetup() -> Bool {
        return true
    }
    
    @objc func setBadgeNumber(_ badgeNumber: Int) {
        DispatchQueue.main.async {
            UIApplication.shared.applicationIconBadgeNumber = badgeNumber
        }
    }
}

AppName-Bridging-Header.h

#ifndef AppName_Bridging_Header_h
#define AppName_Bridging_Header_h

#import <React/RCTBridgeModule.h>

#endif /* AppName_Bridging_Header_h */

Expected Behavior

The NativeModule would load fine at runtime like it did in previous versions of Xcode

Code Example

See above ^

Environment

  React Native Environment Info:
    System:
      OS: macOS 10.14.3
      CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
      Memory: 31.36 MB / 32.00 GB
      Shell: 5.3 - /bin/zsh
    Binaries:
      Node: 11.6.0 - /usr/local/bin/node
      Yarn: 1.13.0 - /usr/local/bin/yarn
      npm: 6.5.0 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
      Android SDK:
        API Levels: 23, 25, 26, 27, 28
        Build Tools: 27.0.3, 28.0.2, 28.0.3
        System Images: android-28 | Google APIs Intel x86 Atom
    IDEs:
      Xcode: 10.2/10E125 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.8.3 => 16.8.3
      react-native: 0.59.1 => 0.59.1

Other

This seems to point to this macro in RCTBridgeModule.h:

react-native/React/Base/RCTBridgeModule.h

Lines 71 to 74 in d9eae2a

	#define RCT_EXPORT_MODULE(js_name) \
	RCT_EXTERN void RCTRegisterModule(Class); \
	+ (NSString *)moduleName { return @#js_name; } \
	+ (void)load { RCTRegisterModule(self); }

[react-native-bot]

It looks like you are using an older version of React Native. Please update to the latest release, v0.59 and verify if the issue still exists.

The "Resolution: Old Version" label will be removed automatically once you edit your original post with the results of running `react-native info` on a project using the latest release.

[callcter]

same issue

[djbird2046]

same issue, and I see the 0.59.2, + (void)load { RCTRegisterModule(self); } , has not changed
Now I have reinstalled XCode 10.1 and xcode-select my env to XCode 10.1

update: I update RN to 0.59.3 and XCode 10.2. It work for me.

[BruhGreg]

Same here, upgrade to 10.2 and it appears

[juliandramirez]

same issue here

[mx-nagaokakoichi]

same issue

[farhad-ris]

same issue here

[tximpa91]

same issue here

[JackyLeeCS]

same issue

[ieniegg]

same issue