Environment variables
Create react app
https://create-react-app.dev/docs/adding-custom-environment-variables/
Use a prefix REACT_APP_
Next.js
https://nextjs.org/docs/api-reference/next.config.js/environment-variables
Use a prefix NEXT_PUBLIC_
https://create-react-app.dev/docs/adding-custom-environment-variables/
Use a prefix REACT_APP_
https://nextjs.org/docs/api-reference/next.config.js/environment-variables
Use a prefix NEXT_PUBLIC_