Missing Semicolon in node-modules/react-native/index.js at line 313

[chooseongwoo]

Description

Description
I'm encountering a Missing Semicolon syntax error in the index.js file of React Native when building the project. The error occurs specifically at line 313 where the following code is present:

} as ReactNativePublicAPI;

It appears that the semicolon is missing after this line, causing the build to fail.

Steps to reproduce

1. Install React Native project.
2. Attempt to build the project 'react-native run-ios'
3. The error Missing Semicolon occurs in the index.js file at line 313.

React Native Version

^0.79.0

Affected Platforms

Runtime - iOS

Output of npx @react-native-community/cli info

System:
  OS: macOS 15.3.2
  CPU: (8) arm64 Apple M2
  Memory: 111.97 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.11.1
    path: ~/.nvm/versions/node/v20.11.1/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.nvm/versions/node/v20.11.1/bin/yarn
  npm:
    version: 10.2.4
    path: ~/.nvm/versions/node/v20.11.1/bin/npm
  Watchman:
    version: 2025.03.10.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.4
      - iOS 18.4
      - macOS 15.4
      - tvOS 18.4
      - visionOS 2.4
      - watchOS 11.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.3 AI-243.24978.46.2431.13208083
  Xcode:
    version: 16.3/16E140
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: javac 22
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /Users/chooseongwoo/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 18.0.0
    wanted: 18.0.0
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.0
    wanted: 0.79.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Stacktrace or Logs

SyntaxError: /Users/chooseongwoo/Coding/Project/SPOTT/node_modules/react-native/index.js: Missing semicolon. (313:1)

  311 |   },
  312 |   // #endregion
> 313 | } as ReactNativePublicAPI;
      |  ^
  314 |
  315 | if (__DEV__) {
  316 |   /* $FlowFixMe[prop-missing] This is intentional: Flow will error when

Reproducer

https://github.com/chooseongwoo/spot

Screenshots and Videos

[TheDude70]

Have the exact same issue

[frg100]

+1

[mfaisal075]

+1

[phucnguyen021295]

+1

[MuhammadRafeh]

+1

[SasquatchLV]

+1, need a fix asap !

[mfaisal075]

I was also facing the same problem, I was using the new version, then I created a new app on the old version, for example I used version 0.76.3, now the app is running fine. You can also use this method. Hopefully your problem gets resolved.

[SasquatchLV]

I was also facing the same problem, I was using the new version, then I created a new app on the old version, for example I used version 0.76.3, now the app is running fine. You can also use this method. Hopefully your problem gets resolved.

0.76.x is already unsupported version - https://github.com/reactwg/react-native-releases/blob/main/docs/support.md

We need react 19.x which is for RN 0.79

[MuhammadRafeh]

@SasquatchLV For workaround we can use 0.78.0 version which is stable.

[mfaisal075]

I was also facing the same problem, I was using the new version, then I created a new app on the old version, for example I used version 0.76.3, now the app is running fine. You can also use this method. Hopefully your problem gets resolved.

0.76.x is already unsupported version - https://github.com/reactwg/react-native-releases/blob/main/docs/support.md

We need react 19.x which is for RN 0.79

You can try 0.77.x or 0.78.x for now, because I was facing the same issue but didn't get a solution.

[nptech0983]

+1

[philip-bui-goldenowl]

+1

[denisrybalka]

+1

[winwinProject]

+1

[cortinico]

Hey all,
Nicola from the React Native team here,

I've tried to reproduce this issue on RN 0.79 with either Node 18, 20 or 22 and I cannot reproduce.

The suspect is that you folks are having some custom babel setup. Without a proper reproducer we can't isolate the issue and help you further sadly.

[react-native-bot]

Warning

Missing reproducer: We could not detect a reproducible example in your issue report. Please provide either:

• If your bug is UI related: a Snack
• If your bug is build/upgrade related: a project using our Reproducer Template
• Otherwise send us a Pull Request with the RNTesterPlayground.js edited to reproduce your bug.

[cortinico]

@chooseongwoo your repro is empty also

[huntie]

Dittoing what @cortinico says, we need a repro project, with a committed yarn.lock, that replicates this error.

I'm suspecting this may also be related to either:

• An outdated install of @react-native/babel-preset. Please note that all @react-native/ dependencies MUST match the major version of react-native, in this case, exactly 0.79.1.
• A custom Babel setup with 3P plugins.

[huextrat]

@cortinico @huntie Hi, I have the same issue on my library: huextrat/react-native-rate-app#201

But for the moment I haven't looked into it in detail, I'm just sharing if it helps you move forward

[SasquatchLV]

Hey all, Nicola from the React Native team here,

I've tried to reproduce this issue on RN 0.79 with either Node 18, 20 or 22 and I cannot reproduce.

The suspect is that you folks are having some custom babel setup. Without a proper reproducer we can't isolate the issue and help you further sadly.

Well, i have set up custom path aliases in babel.config.js , so i assume something has changed in 0.79 since these do not work anymore.

[huntie]

@huextrat Right, so in your case you're depending on react-native-builder-bob, and not our Babel preset.

• Looks like this is definitely broken(!) [1] ( @babel/preset-flow is unsupported). I'll attempt a PR. This probably isn't what's affecting other users here though.

[kaaoo]

I was able to pass this error, once I've updated my @react-native/metro-config to latest version (0.79.1)

[frg100]

Thanks for the tips pointing to babel! I had to update my babel.config.js presets path to use @react-native/babel-preset instead of module:metro-react-native-babel-preset

[Sang0424]

I'm facing the same error.
Has anyone found a fix or workaround?

[cortinico]

Closing as we verified that this was due to a wrong babel configuration. React Native Builder Bob has been updated to do not use the @babel/preset-flow plugin here:

• fix: Migrate to babel-plugin-syntax-hermes-parser callstack/react-native-builder-bob#822

There is nothing left to do on react-native for us.