Environment

React Native Environment Info:
System:
OS: macOS 10.14.1
CPU: x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
Memory: 69.88 MB / 8.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 11.1.0 - /usr/local/bin/node
Yarn: 1.12.3 - /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 12.1, macOS 10.14, tvOS 12.1, watchOS 5.1
Android SDK:
Build Tools: 26.0.3, 27.0.3, 28.0.3
API Levels: 26, 27, 28
IDEs:
Android Studio: 3.2 AI-181.5540.7.32.5014246
Xcode: 10.1/10B61 - /usr/bin/xcodebuild
npmPackages:
react: 16.7.0-alpha => 16.6.1
react-native: 0.57.5 => 0.57.5

Description

After upgrading to react-native 0.57.5 I began to get this error when running react-native start:

internal/modules/cjs/loader.js:589
    throw err;
    ^

Error: Cannot find module './init/init'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:587:15)
    at Function.Module._load (internal/modules/cjs/loader.js:513:25)
    at Module.require (internal/modules/cjs/loader.js:643:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.<anonymous> (/Users/robertmilejczak/Documents/Projects/kalos-mobile/node_modules/react-native/local-cli/cliEntry.js:26:14)
    at Module._compile (internal/modules/cjs/loader.js:707:30)
    at Module._compile (/Users/robertmilejczak/Documents/Projects/kalos-mobile/node_modules/pirates/lib/index.js:83:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:718:10)
    at Object.newLoader (/Users/robertmilejczak/Documents/Projects/kalos-mobile/node_modules/pirates/lib/index.js:88:7)
    at Module.load (internal/modules/cjs/loader.js:605:32)

And if I try building in XCode I get a message that YogaEnums.h could not be found.

Reproducible Demo

Unfortunately I cannot reproduce this consistently. It happens on my local machine with each restart, and sometimes happens if I have to restart metro during testing for some reason.

The fix is easy enough, I just clear all my caches and reinstall node_modules and everything works fine so realistically it's just a delay of a few minutes.

As far as I can tell this is not happening on fresh projects so I'm guessing there was some change to some core iOS file that I did not get since I did not use react-native upgrade. Since rn-diff has not been able to keep up with the rn release schedule I can't confirm whether or not this is the case. I don't actually need assistance, and am only making this issue for posterity.