Repozytorium Web Developera

Archiwum z lat 2013-2018, treści mogą być nieaktualne.

React - create-react-app

Useful links

Env variables in create-react-app

  • Variables can be defined in your shell or in a .env file at the project root.
  • Only variables starting with REACT_APP_ are imported.
  • Imported values are placed in process.env, for example process.env.REACT_APP_SECRET_CODE.
  • More in this article


There are only development and production env in create-react-app. You can simulate a new env as an env variable REACT_APP_ENV=staging.