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Environment Setup

Each app has its own .env.example. Copy it to .env in the same directory and fill in values for local development.

apps/api/.env

Variable Description Default (example)
NODE_ENV development, test, or production development
PORT Port the API listens on 5000
MONGODB_URI MongoDB connection string mongodb://localhost:27017/discoverly
JWT_SECRET Secret used to sign auth tokens replace_me
JWT_EXPIRES_IN Auth token expiry (jsonwebtoken duration format) 7d

Tests do not read these values from .env — they run against an in-memory MongoDB instance with fixed test values, so the test suite works immediately after npm install.

apps/web/.env

Variable Description Default (example)
NEXT_PUBLIC_API_URL Base URL of apps/api http://localhost:5000

apps/mobile/.env

Variable Description Default (example)
EXPO_PUBLIC_API_URL Base URL of apps/api http://localhost:5000

Secrets handling

  • Never commit .env files — they are git-ignored.
  • JWT_SECRET must be a strong, unique value outside of local development; treat it as a secret in any deployed environment.
  • CI does not require real secrets: the API test suite uses an in-memory database and a fixed test JWT secret defined in apps/api/vitest.config.ts.