Cannot read property 'tokens' of undefined

[skv-headless]

Description

I'm testing my app on react-native master. And having such error during transformation

UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 548): SyntaxError: TransformError: /Users/headless/tmp/TestIntlCrash/node_modules/intl/lib/core.js: Cannot read property 'tokens' of undefined

Reproduction

new project with intl dependency
https://github.com/skv-headless/TestIntlCrash

Solution

Not yet.

Additional Information

• React Native version: [master], works on 0.40
• Platform: [iOS, Android]
• Operating System: [MacOS]

[skv-headless]

caused by this commit 0849f84 I hope @davidaurelio can give me a hint since I'm not fully understand this patch.

[gitim]

I have the same issue, I debugged it a little bit and I found that error occurs on the line https://github.com/babel/babel/blob/master/packages/babel-generator/src/index.js#L16, because somehow ast for this file is undefined.

[skv-headless]

andyearnshaw/Intl.js#264

[gitim]

The issue is solved in the version 0.41, it can be closed.

[ruiaraujo]

@gitim I am getting this again in 0.42-rc2.
It does work on 0.41.

[dkpalmer]

Also getting this on 0.42.0-rc3, and confirmed working downgrading to 0.41.0.

[cknitt]

Just encountered this problem in 0.42.0 release. 0.41 works fine.

[ericvicenti]

What is the intl library doing that causes this? This issue description does not make it clear what is broken inside RN, just that something is wrong when you use this library. Please re-open an issue that is more specific about RN's behavior, if the issue doesn't already exist

[cknitt]

@ericvicenti: This error occurs during packaging, not while using the library.

[seavan]

@ericvicenti please reopen the issue

[chandu0101]

probably related to #12695