"unterminated string constant" when generating production bundle

Description

I’ve just upgraded from 0.39 to 0.42.3 and things seem to be working well, but I can’t do a non-dev build.

$ /usr/local/bin/node ./node_modules/.bin/react-native bundle --entry-file index.ios.js --bundle-output iOS/main.jsbundle --dev false --platform ios --verbose  --reset-cache
Scanning 730 folders for symlinks in /Users/udi/app/node_modules (7ms)
Scanning 730 folders for symlinks in /Users/udi/app/node_modules (7ms)
Loading dependency graph, done.
warning: the transform cache was reset.

Unterminated string constant

Changing --dev true works however.

/usr/local/bin/node ./node_modules/.bin/react-native bundle --entry-file index.ios.js --bundle-output iOS/main.jsbundle --dev true --platform ios --reset-cache
Scanning 730 folders for symlinks in /Users/udi/app/node_modules (6ms)
Scanning 730 folders for symlinks in /Users/udi/app/node_modules (7ms)
Loading dependency graph, done.
warning: the transform cache was reset.
bundle: start
bundle: finish
bundle: Writing bundle output to: iOS/main.jsbundle
bundle: Done writing bundle output
Assets destination folder is not set, skipping...

Reproduction Steps and Sample Code

Unfortunately this error is so vague that I’m not sure where to begin with reproducibility other than to upload my entire codebase, which unfortunately isn’t possible.

Does anyone have suggestions for how I could better debug this issue? --verbose doesn’t seem to do anything. Thanks!

Additional Information

• React Native version: “react”: “~15.4.0”, “react-native”: “^0.42.3”,
• Platform: iOS
• Development Operating System: MacOS
• Dev tools: Xcode and command line

[airman00]

@udfalkso any luck or updates with this?

I’m experiencing the same issue and lost with what to try next

[veris-amoghbanta]

any solutions on on this one?