npm i cors
in backend
- FRONTEND: import.meta.env.[VARIBLE_ENVIROMENT]
- BACKEND: process.env.[VARIBLE_ENVIROMENT]
- (NodeMailer)![https://nodemailer.com/about/]
- Execute:
npm install nodemailer
Too
- (Mailtrap)![https://mailtrap.io/home]
- npm install @headlessui/react
- Folder Backend: npm i socket.io
- Folder Frontend: npm i socket.io-client