Invariant Violation: "myAppName" has not been registered

Description

i'm trying to running on ios emulator, but without success:

Invariant Violation: "myAppName" has not been registered. This can happen if:
* Metro (the local dev server) is run from the wrong folder. Check if Metro is running, stop it and restart it in the current project.
* A module failed to load due to an error and `AppRegistry.registerComponent` wasn't called., js engine: hermes

metro is started, and build, so i think the problem is:

A module failed to load due to an error and AppRegistry.registerComponent wasn't called., js engine: hermes

Version

0.70.2

Output of `npx react-native info`

System:
OS: macOS 12.6
CPU: (8) arm64 Apple M1 Pro
Memory: 316.59 MB / 32.00 GB
Shell: 5.8.1 - /bin/zsh
Binaries:
Node: 16.17.1 - /usr/local/bin/node
Yarn: Not Found
npm: 8.15.0 - /usr/local/bin/npm
Watchman: 2022.07.04.00 - /opt/homebrew/bin/watchman
Managers:
CocoaPods: 1.11.3 - /Users/mantegnous/.rvm/gems/ruby-2.7.5/bin/pod
SDKs:
iOS SDK:
Platforms: DriverKit 21.4, iOS 16.0, macOS 12.3, tvOS 16.0, watchOS 9.0
Android SDK: Not Found
IDEs:
Android Studio: 2021.3 AI-213.7172.25.2113.9014738
Xcode: 14.0.1/14A400 - /usr/bin/xcodebuild
Languages:
Java: 11.0.11 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: ^18.2.0 => 18.2.0
react-native: ^0.70.2 => 0.70.2
react-native-macos: Not Found
npmGlobalPackages:
react-native: Not Found

Steps to reproduce

i'm running ios

Snack, code example, screenshot, or link to a repository

having the same problem

Problem solved by fixing deprecated-react-native-prop-types

@Daha62

Hey @Daha62

If your problem is solved can you please close the issue?
It sparks joy for maintainers ✨

@mantegnous did you fix the issue ? I'm having the same problem, solving the deprecated-react-native-prop-types issues did not help.

Someone has fix this issue ? I got the error with Android, but not with iOS.

I'm getting this on RN 0.71, any solution?

I had this issue on 0.88.5, but the reason I had this error is because I'm using wix/react-native-navigation, I had to enter npx rnn-link to resolve this issue.

Could also be because in some native file, the project name is still have some rndiffapp in some native file.

anyone solved this issue?

i solved this problem by ending adb(32bit) from task manager then i run the project on my real device it successful worked

i solved this problem by ending adb(32bit) from task manager then i run the project on my real device it successful worked

let me know if this works for you guys as well thanks!

I'm getting this on RN 0.71, any solution?

Same here.

any solution?

Same problem on 0.73.8

same problem to run ios with react native 0.74. Same name in app.json, package.json and getMainComponentName. Any solution?

Were you able to resolve? Is it due to react-native-navigation (https://github.com/wix/react-native-navigation) package?

+1
facing same problem on 0.74.0

+1
facing same problem on "react-native": "0.74.5",

Hi
I am also facing the same issue though I have placed same name in the three places.

package.json
app.json
MainApplication.kt

Check the App name in MainActivity at getMainComponentName function, app.json, and package.json it will same in these 3 places.

Yeah man it worked for me!!!

Check the App name in MainActivity at getMainComponentName function, app.json, and package.json it will same in these 3 places.

it's fo funny, I change name in app.json, it's not working. I don know that it's must same in these 3 places.

Probably this was causing error, I changed back name in app.json and its working fine now

I solved this problem by changing name to required in AppRegistry.registerComponent("CORRECT_APP_NAME", () => App)

I also made sure that the project name was consistent across all settings, including app.json.

After that, I deleted the index.android.bundle file located at android/app/src/main/assets/ in the project root.

Then I regenerated the bundle by running the following command in the terminal:

npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle

This resolved the issue for me.

I was having a react-native-web setup in my react-native project to support web along with android and ios.

In my case, I configured an alias which was supposed to be only in webpack.config.js (for web) and not in babel.config.js (for mobile):

resolve: {
    alias: {
      'react-native$': 'react-native-web',
    },
  },

Once I removed this alias from babel.config.js, mobile part started working correctly and web part was intact as well.
The error: "Invariant Violation: "myAppName" has not been registered" was resolved with this

In my case it was a ts compile issue make sure to compile the code and resolve the error and reload the metro bundler

This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 7 days.

This issue was closed because it has been stalled for 7 days with no activity.

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Invariant Violation: "myAppName" has not been registered #34893

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Output of `npx react-native info`

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Invariant Violation: "myAppName" has not been registered #34893

Description

Description

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Output of npx react-native info

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Daha62 commented on Oct 26, 2022

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Output of `npx react-native info`