[...] iOS on React Native 0.60(+)

[brody4hire]

If I would generate a new module with an example on RN 0.60, the generated example project does not work on iOS.

Tool version: 0.5.0

Command used:

create-react-native-module --generate-example ben-alan

Debug output with error message:

2019-07-10 22:19:39.624 [info][tid:main][RCTCxxBridge.mm:236] Initializing <RCTCxxBridge: 0x7fe7be5031a0> (parent: <RCTBridge: 0x600000a347e0>, executor: (null))
2019-07-10 22:19:39.629322-0400 example[21627:1170867] Initializing <RCTCxxBridge: 0x7fe7be5031a0> (parent: <RCTBridge: 0x600000a347e0>, executor: (null))
2019-07-10 22:19:39.836 [info][tid:main][RCTRootView.m:293] Running application example ({
    initialProps =     {
    };
    rootTag = 1;
})
2019-07-10 22:19:39.836033-0400 example[21627:1170867] Running application example ({
    initialProps =     {
    };
    rootTag = 1;
})
2019-07-10 22:20:59.403488-0400 example[21627:1171076] [] nw_socket_handle_socket_event [C3.1:1] Socket SO_ERROR [61: Connection refused]
2019-07-10 22:20:59.409348-0400 example[21627:1171076] [] nw_socket_handle_socket_event [C3.2:1] Socket SO_ERROR [61: Connection refused]
2019-07-10 22:20:59.412213-0400 example[21627:1171105] [] nw_connection_get_connected_socket [C3] Client called nw_connection_get_connected_socket on unconnected nw_connection
2019-07-10 22:20:59.659 [info][tid:com.facebook.react.JavaScript] Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF
2019-07-10 22:20:59.659131-0400 example[21627:1171099] Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF
2019-07-10 22:20:59.815 [error][tid:com.facebook.react.JavaScript] TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.815621-0400 example[21627:1171099] TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.844 [error][tid:com.facebook.react.JavaScript] TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.843901-0400 example[21627:1171099] TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.854 [fatal][tid:com.facebook.react.ExceptionsManagerQueue] Unhandled JS Exception: TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.853868-0400 example[21627:1171105] Unhandled JS Exception: TypeError: null is not an object (evaluating '_reactNativeBenAlan.default.sampleMethod')

This error is located at:
    in App (at renderApplication.js:40)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:98)
    in RCTView (at View.js:35)
    in View (at AppContainer.js:115)
    in AppContainer (at renderApplication.js:39)
2019-07-10 22:20:59.946 [info][tid:com.facebook.react.JavaScript] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:20:59.946207-0400 example[21627:1171099] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:20:59.981970-0400 example[21627:1170867] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/brodybits/Library/Developer/CoreSimulator/Devices/D3554BC6-55FA-4421-82BA-9510E66B738D/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2019-07-10 22:20:59.982485-0400 example[21627:1170867] [MC] Reading from private effective user settings.
2019-07-10 22:21:00.206 [info][tid:com.facebook.react.JavaScript] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:00.208203-0400 example[21627:1171099] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:00.228 [info][tid:com.facebook.react.JavaScript] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:00.228134-0400 example[21627:1171099] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:03.280 [info][tid:com.facebook.react.JavaScript] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:03.280881-0400 example[21627:1171099] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:05.823 [info][tid:com.facebook.react.JavaScript] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }
2019-07-10 22:21:05.823821-0400 example[21627:1171099] 'BugReporting extraData:', { 'AppRegistry.runApplication1': 'Running application "example" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF' }

See also:

• Updates for React Native 0.60 #25 (updates for RN 0.60)

[brody4hire]

I think we need to add react-native.config.js to the generated project, like someone proposed for react-native-google-signin in react-native-google-signin/google-signin#692.

The warning message in react-native-google-signin/google-signin#692 points to the following documentation resource:

• https://github.com/react-native-community/cli/blob/master/docs/configuration.md#migration-guide

[dsyne]

Hey, i came across this library after trying and failing to get react-native-create-library to work however I'm having similar issues to those you describe above. I'm able to build and run the example
project using the command described in the readme:
create-react-native-module --prefix CB --package-identifier io.mylibrary --generate-example AliceHelper
It works fine on android but in iOS i get TypeError: Cannot read property 'sampleMethod' of undefined. I've tried lowering the react-native version in templates/generate.js to 0.59.10 and re-generating but am still getting the same error. Is there a way you know of to get a working example project, i'm happy to use an old version of RN etc but cant see how i can achieve this. ... Side note, if you have any primarily JS work that needs looking at, i'd be happy to chip in if it helps :)

[brody4hire]

[…] I'm having similar issues to those you describe above. […]

I will try to fix this before making the 0.6.0 release later today. I will likely use the following PRs for examples:

• Migrate project from rnpm to react-native.config.js react-native-google-signin/google-signin#692
• Remove old rnpm for react-native 0.60 andpor/react-native-sqlite-storage#361

I've tried lowering the react-native version in templates/generate.js to 0.59.10 and re-generating but am still getting the same error.

I think that should not make any difference.

[…] i'm happy to use an old version of RN […]

Try something like this:

react-native init my-native-module --version react-native@0.59

Side note, if you have any primarily JS work that needs looking at, i'd be happy to chip in if it helps :)

Thanks for the offer. There are a few issues that I think should be “pure JS”, for example: #15

[brody4hire]

I suspect that the iOS Podfile is needed to work with React Native 0.60. I tried using the new --use-cocoapods option but then run into an issue with duplicated modules on Haste. So I will release version 0.6.0 now and try to solve this issue sometime later. Any help from others would be highly appreciated.

[dsyne]

Thank you for the quick response, I installed the dev branch and it's working 👌. I'll fork now and have a look at #15

[brody4hire]

Here is how I was able to resolve this issue for the generated example on iOS:

• do react-native link <module name> in the generated example (not needed)
• do pod install in the ios subdirectory of the generated example manually

My first attempt to update lib/lib.js to automatically do pod install in the ios subdirectory of the generated example did not seem to work for me. I hope to get this working someday. I think the right solution for now is to simply document this.

[douglowder]

Is the issue that pod install won’t work until you run yarn install in the generated example?

[brody4hire]

Is the issue that pod install won’t work until you run yarn install in the generated example?

I really don't remember. Further response should be coming soon.

[brody4hire]

discussion is now continued in #99