How to add file env to bundle?

How to add file env to bundle ? I need a method like this `--env ./config.env` but in the documentation like this `--env.NODE_ENV production` which is like redefining it in the CLI

I hope you help me, thank you in advance for this great package

The issue names no file, test, or entry point. Start by checking tsup's CLI documentation and the existing --env handling; done means the supported way to load a .env file, or the limitation, is clearly documented.

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