Do you want to request a feature or report a bug?

Bug

What is the current behavior?

When attempting to package a project which makes use of the https://github.com/moment/moment.js library, the packager crashes with the error require() must have a single string literal argument

The library line in question is: https://github.com/moment/moment/blob/develop/moment.js#L1830 which appears to be perfectly javascript code.

This behavior does not seem to happen when I build the bundle with RN 0.48.4, however that particular build has issues when running on an phone running Oreo.

I can work around this issue by disabling the error in question by adding a return statement before this line: https://github.com/facebook/metro-bundler/blob/master/packages/metro-bundler/src/JSTransformer/worker/extract-dependencies.js#L39

If the current behavior is a bug, please provide the steps to reproduce and a minimal repository on GitHub that we can yarn install and yarn test.

I am working on a repo to reproduce this behavior, however my time is limited due to pressing issues that need to be addressed within the next week so I have not been able to get a proper minimalist reproduction of this behavior.

I will update this issue with a link once I can get a good example.

What is the expected behavior?

There should not be any errors when packaging the JS bundle with the above library

Please provide your exact metro-bundler configuration and mention your metro-bundler, node, yarn/npm version and operating system.

RN: 0.49.0-rc.5
metro-bundler: 0.13.0
OS: Arch Linux
Mobile OS: Android 8.0.0