cannot export .env variables in production build

[vigneshwaran-vtpl]

Pre-flight checklist

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project uses.
• I have searched the issue tracker for a bug that matches the one I want to file, without success.

Electron Forge version

7.6.0

Electron version

v33.3.1

Operating system

mac

Last known working Electron Forge version

No response

Expected behavior

export .env variables in production build

Actual behavior

getting undefined

Steps to reproduce

1. npx create-electron-app@latest my-new-app --template=vite-typescript
2. create .env in root & add dotenv
3. used them in main.ts

Additional information

The production build cannot export .env variables, but it works fine in development mode.