[runtime not ready]: Error: repack react-native module was not found. Did you forget to update native dependencies?, js engine: hermes

[BrunoElias98]

Describe the bug

I'm facing an issue with Re-Pack on iOS, where the app throws the following error at startup:

However, if I dismiss the error, the app runs normally.

This issue only happens on iOS – on Android, everything works as expected.

Following the webpack.config, i'm using repack 5.0.3

import path from 'node:path';
import { fileURLToPath } from 'node:url';
import * as Repack from '@callstack/repack';
import TerserPlugin from 'terser-webpack-plugin';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

import pkg from './package.json' with { type: 'json' };

/**
 * Webpack configuration enhanced with Re.Pack defaults for React Native.
 *
 * Learn about webpack configuration: https://webpack.js.org/configuration/
 * Learn about Re.Pack configuration: https://re-pack.dev/docs/guides/configuration
 */

export default {
  context: __dirname,
  entry: './index.js',
  resolve: {
    ...Repack.getResolveOptions(),
    alias: {
      '@Mocks': path.resolve(__dirname, 'src/@mocks'),
      '@Types': path.resolve(__dirname, 'src/@types'),
      '@Components': path.resolve(__dirname, 'src/components'),
      '@Pages': path.resolve(__dirname, 'src/pages'),
      '@Assets': path.resolve(__dirname, 'src/assets'),
      '@Services': path.resolve(__dirname, 'src/core/services'),
      '@Hooks': path.resolve(__dirname, 'src/core/hooks'),
      '@Store': path.resolve(__dirname, 'src/core/store'),
      '@Constants': path.resolve(__dirname, 'src/core/constants'),
      '@Utils': path.resolve(__dirname, 'src/core/utils'),
    },
  },
  module: {
    rules: [
      {
        test: /\.[cm]?[jt]sx?$/,
        use: 'babel-loader',
        type: 'javascript/auto',
      },
      ...Repack.getAssetTransformRules(),
    ],
  },
  optimization: {
    minimizer: [
      new TerserPlugin({
        test: /\.(js)?bundle(\?.*)?$/i,
        extractComments: false,
        terserOptions: {
          format: {
            comments: false,
          },
        },
      }),
    ],
  },
  plugins: [
    new Repack.RepackPlugin(),
    new Repack.plugins.ModuleFederationPluginV2({
      name: 'AppName',
      filename: 'AppName.container.js.bundle',
      exposes: {
        './App': './src/App',
      },
      shared: {
        react: {
          singleton: true,
          eager: true,
          requiredVersion: pkg.dependencies.react,
        },
        'react-native': {
          singleton: true,
          eager: true,
          requiredVersion: pkg.dependencies['react-native'],
        },
      },
    }),
  ],
};

Enabling/disabling Hermes

The error persists even when Hermes is disabled in Podfile.

System Info

System:
  OS: macOS 15.3
  CPU: (10) arm64 Apple M2 Pro
  Memory: 162.22 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 22.14.0
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.22
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.9.2
    path: /usr/local/bin/npm
  Watchman: Not Found
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/brunoeliasdesouza/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23726.103.2422.12816248
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.13
    path: /Users/brunoeliasdesouza/.sdkman/candidates/java/current/bin/javac
  Ruby:
    version: 3.3.5
    path: /Users/brunoeliasdesouza/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: ^15.0.1
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.78.0
    wanted: 0.78.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Re.Pack Version

5.0.3

Reproduction

none

Steps to reproduce

npm i

[jbroma]

hi, try reinstalling pods please - if that doesn't work, I can investigate this but you need to provide a valid repository with reproduction because I can't see anything wrong with the config

[BrunoElias98]

hi, try reinstalling pods please - if that doesn't work, I can investigate this but you need to provide a valid repository with reproduction because I can't see anything wrong with the config

I already tried reinstalling the pods, but unfortunately, the issue persists.

The repository is private since it belongs to the company I work for, so I can't share direct access. However, I can provide specific parts of the configuration or logs if that helps.

Would you be able to guide me on what additional details I can provide to help debug this?

Thanks for your time!

[BrunoElias98]

@jbroma

I have tried all the suggested solutions, including reinstalling the pods, enabling/disabling Hermes, clearing caches, and ensuring the Webpack configuration is correct. However, the issue still persists on iOS.

After further investigation, I believe this might be caused by an inconsistency with React Native 0.78.0, as everything works fine on Android but fails on iOS with the [runtime not ready] error.

Could this be a compatibility issue between Re.Pack and React Native 0.78.0? Are there any known issues or workarounds for this?