JS files in public folder evaluated after copy and upload

[traffisco]

Describe the problem:

Files with JS extension in the public folder are evaluated on yarn deploy. The folder intended for static files to be uploaded and scripts shouldn't be evaluated.

Link to a minimal reproduction:

https://github.com/traffisco/yarn-bug-test

Added new file test.js with "error" typed in it.

yarn deploy fails with error: "message": "Uncaught ReferenceError: error is not defined\n at line 22\n"

Files do get copied to out folder and uploaded to KV. Instant workaround is to delete the files from the public folder.

[traffisco]

Looks like wrangler publish have a bug with webpack CopyPlugin https://github.com/flareact/flareact/blob/0d0a8362e754330f21a6235150531d997f487ffd/configs/webpack.worker.config.js#L32 Quick fix is to move file copy from webpack to another place like https://github.com/flareact/flareact/blob/0d0a8362e754330f21a6235150531d997f487ffd/src/bin/flareact.js#L93

I can make a PR if you interested