Packager fails loading Intl polyfill for Android

Description

For using React-intl on android we must add a polyfill, since Intl isn’t supported yet in android. When importing the Intl polyfill in RN41.2 the react-intl library works fine. When using the same import in RN 42 the following error is thrown:

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

This is the same error as described in https://github.com/facebook/react-native/issues/12071, but since the issue was closed for an unclear issue name, I created this issue.

Reproduction

Try using react-intl in an android emulator, then try including the intl polyfill with

import 'intl';

When testing in RN41.2 it will work, in RN 42 it won’t

Solution

Something seems to be wrong when the packager processes the core.js file

Additional Information

• React Native version: 41.2 vs 42
• Platform: Android
• Operating System: MacOS

[alexandrebini]

@doochik adding this on package.json fixed for me

"postinstall": "rm -f node_modules/intl/.babelrc"

more here: https://github.com/andyearnshaw/Intl.js/pull/264#issuecomment-279947557

[hramos]

Hi there! This issue is being closed because it has been inactive for a while. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. Either way, we’re automatically closing issues after a period of inactivity. Please do not take it personally!

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