Support ES Module wrapper

[clayrisser]

It would be nice if tsup had an option to automatically create an esm wrapper around the cjs module instead of compiling the esm module.

https://nodejs.org/api/packages.html#approach-1-use-an-es-module-wrapper

This would prevent the Dual CommonJS/ES module packages bug.

https://nodejs.org/api/packages.html#dual-commonjses-module-packages

@egoist any thoughts???

Upvote & Fund

• We're using Polar.sh so you can upvote and help fund this issue.
• We receive the funding once the issue is completed & confirmed by you.
• Thank you in advance for helping prioritize & fund our backlog.