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To define permanent environment variables, create a file called .env in the root of your project.

\n

You must create environment variables beginning with REACT_APP.

\n
client/src/.env
\n
REACT_APP_STRIPE_KEY=pk_test_51I29RDy0e0059Iop568
\n","frontmatter":{"title":"How to Add Custom Environment Variables in React?","date":"2021-05-21"}}},"pageContext":{"slug":"/how-to-add-custom-environment-variables-in-react/","prev":{"fields":{"slug":"/git-cheatsheet/"},"frontmatter":{"modules":null}},"next":{"fields":{"slug":"/how-to-proxy-api-requests-in-react/"},"frontmatter":{"modules":null}}}}, "staticQueryHashes": ["3159585216"]}