[still broken] error: bundling failed: Error: Unable to resolve module `./../react-transform-hmr/lib/index.js

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Environment

  React Native Environment Info:
    System:
      OS: macOS 10.14
      CPU: x64 Intel(R) Core(TM) i7-6660U CPU @ 2.40GHz
      Memory: 319.66 MB / 16.00 GB
      Shell: 3.2.57 - /bin/bash
    Binaries:
      Node: 10.11.0 - /usr/local/Cellar/node/10.11.0/bin/node
      Yarn: 1.10.1 - /usr/local/bin/yarn
      npm: 6.4.1 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.0, macOS 10.14, tvOS 12.0, watchOS 5.0
    IDEs:
      Xcode: 10.0/10A255 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.5.0 => 16.5.0 
      react-native: 0.57.2 => 0.57.2 

Description

This is a duplicate of https://github.com/facebook/react-native/issues/21490 – but that ticket is resolved, so I cannot comment there.

Mitigation steps remain the same. It appears that a version lock (perhaps the cyclic dependency between metro and metro-config — I couldn’t track it down) prevents yarn from resolving 0.48.0 of metro.

Reproducible Demo

brew install nvm
brew install yarn --without-node
nvm install v10.11.0
nvm use v10.11.0
npx react-native-cli init myapp

Expected

Yarn installs metro 0.48.0

Actual

Yarn installs:

├─ metro-babel-register@0.47.1
├─ metro-babel7-plugin-react-transform@0.47.1
├─ metro-config@0.47.1
├─ metro-memory-fs@0.47.1
├─ metro-minify-uglify@0.47.1
├─ metro-react-native-babel-preset@0.47.1
├─ metro-source-map@0.47.1
├─ metro@0.47.1

In addition, manually installing metro 0.48.0 in the project doesn’t appear to help because yarn will resolve both dependencies.

[kara-ryli]

Thanks for the tip, @jjenzz! I actually needed:

  "resolutions": {
    "metro": "^0.48.1",
    "metro-babel-register": "^0.48.1",
    "metro-core": "^0.48.1",
    "metro-memory-fs": "^0.48.1"
  },

To ensure all of the metro-related things were at the same version and unduplicated.

[kelset]

Duplicate of #21490