RCT_EXPORT_METHOD that takes no parameters and returns a promise throws error

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

yes

Environment

Environment: OS: macOS Sierra 10.12.6 Node: 8.9.0 Yarn: 1.3.2 npm: 5.5.1 Watchman: 4.9.0 Xcode: Xcode 9.1 Build version 9B55 Android Studio: 3.0 AI-171.4408382

Packages: (wanted => installed) react: 16.0.0-beta.5 => 16.0.0-beta.5 react-native: 0.49.3 => 0.49.3

Target Platform: iOS (10.3)

Steps to Reproduce

(Write your steps here:)

1. Create a native module that returns a promise

TestNativeModule.h

#import <Foundation/Foundation.h>
#import <React/RCTBridgeModule.h>

@interface TestNativeModule : NSObject <RCTBridgeModule>
@end

TestNativeModule.m

@implementation TestNativeModule
RCT_EXPORT_MODULE();

RCT_EXPORT_METHOD(get: findEventsWithResolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject) {
  resolve("test");
}
@end

1. Call it from JS:

const promise = NativeModules.CallToAdventureNative.get();

1. See the error:

CallToAdventureNative.get was called with 0 arguments but expects 1 arguments. If you haven't changed this method yourself, this usually means that your versions of the native code and JavaScript code are out of sync. Updating both should make this error go away.

Note: It works if you pass Anything to the .get function.

Expected Behavior

It would call the function.

Actual Behavior

The error posted above.

Reproducible Demo

It’s a native module, can’t repro the web

[floriancargoet]

Try:

RCT_EXPORT_METHOD(get:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject) {
  resolve("test");
}

[cmwall]

I’m just checking in on this. I’m also running into this error. Is there a better solution than that empty string hack?