Tree shaking is not performed on `RegExp` in Webpack about valibot HOT 4 CLOSED

There's nothing readily apparent, but I wondered if the lack of pure annotations prevented tree-shaking of literal regular expressions.

Let me do a reproduction repository with popular bundlers.

from valibot.

Thank you for your research! Yes, it seems that there is nothing Valibot can do and the problem is related to ts-loader or Webpack.

from valibot.

You are right. But that's a problem with the webpack configuration and not with Valibot, right?

from valibot.

I was able to reproduce the lack of tree-shaking with Webpack & ts-loader can be seen in dist/typescript.js. It’s worth nothing that when the entry files are JavaScript, tree shaking is performed adequately in dist/javascript.js.

If you believe this is an issue best flagged with Webpack or ts-loader, happy to do that instead.

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