[REGRESSION] Fails to minify

[josephcsible]

What should happen?

Minifying Foundation's code in a React app should succeed, as it has in prior versions.

What happens instead?

Minifying Foundation's code in a React app fails with the following error:

root@51106dca2935:/my-app# yarn build
yarn run v1.9.4
$ react-scripts build
Creating an optimized production build...
Failed to compile.
 
Failed to minify the code from this file: 
 
       ./node_modules/foundation-sites/js/foundation.core.utils.js:24 
 
Read more here: http://bit.ly/2tRViJ9
 
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
root@51106dca2935:/my-app# 

Steps to Reproduce

How to reproduce:

1. Run npx create-react-app my-app
2. Run cd my-app
3. Run yarn add jquery foundation-sites@6.5.0-rc.3
4. Add import 'foundation-sites'; to src/index.js
5. Run yarn build

Context

I’d like to be able to use the latest version of Foundation in a React app. This is a regression, as my reproduction steps don't cause the error with Foundation 6.5.0-rc.2.

Your Environment

• Foundation version(s) used: 6.5.0-rc.3
• Browser(s) name and version(s): N/A (problem occurs before a browser is involved)
• Device, Operating System and version: Tested in Docker containers node:10 (Debian) and in node:10-alpine
• Link to your project: N/A

Checklist

• I have read and follow the CONTRIBUTING.md document.
• There are no other issues similar to this one.
• The issue title and template are correctly filled.

[ncoden]

Hi @josephcsible 👋,

Thank you for the report. This is probably caused by the react bundler choosing the module entry even if it does not support ES6 packages (they are not transpiled before minification).

I'll take care of this.

[ncoden]

See #11508