integration-layer
Integration Layer
Intent
Implement external integrations (Firebase, Data Connect, HTTP, SDKs) behind stable ports so the rest of the app stays framework-agnostic.
Layer Boundaries
- Only integration/infrastructure may import Firebase/AngularFire/DataConnect SDKs.
- Expose interfaces/tokens to Application; never expose platform types.
Repository Adapters
- Implement repository ports with minimal mapping:
- DTO <-> Domain mapping happens here (or in dedicated mappers within integration).
- Keep mapping deterministic; normalize timestamps/IDs.
Streams and Signals
- Integration may return Observables (streaming) or Promises (commands).
- Convert to signals at the Application boundary (store/facade), not in templates.
- Ensure cleanup: avoid manual subscriptions unless lifecycle-bound.
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