Expo Env Load Behavior

behavior on how Expo load env on dev server, EAS Build, and EAS Updates

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Expo has different behavior on how it loads env variables on dev server, EAS Build, and EAS Updates

  • On dev server and EAS Updates, by default it will load .env
  • On EAS Build (unless we upload .env to EAS Build), it's recommended to define it in eas.json
  • To make sure EAS Updates load the desired env:
    1. Define NODE_ENV and .env.${ENVIRONMENT_NAME}. For example we want to use .env.production:
    2. Add --clear-cache to make sure it load the most fresh value
    bash
    npx cross-env NODE_ENV=production eas update --channel production --message "fix issues"

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