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agentic-dev/docs/decisions/adr-002-di-framework.md
Danijel Martinek 841655573b docs(adr): rename ADR-012 — drop Lazar; update title + content + cross-refs 
- Rename docs/decisions/adr-012-lazar-conformance.md → adr-012-feature-conventions.md
- Strip "Lazar", "Plan 8/9/10/11", "refactor-logs" refs from all ADRs,
  architecture docs, HTML explainers, and feature/core AGENTS.md files
- Update all incoming links in docs/, packages/*/AGENTS.md, HTML explainers

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 10:07:37 +02:00

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ADR-002: InversifyJS for Dependency Injection

Status: Accepted

Context

Need DI for clean architecture. Options: InversifyJS, tsyringe, manual composition root.

Decision

InversifyJS with symbol-based resolution + targeted agent documentation.

Rationale

  • Scales to 20+ services with automatic dependency chain resolution
  • Built-in singleton/transient/request scopes
  • Middleware support for logging/tracing (Sentry integration)
  • Matches the Clean Architecture reference implementation
  • Agent readability gap (4/10 → 7/10) mitigated by resolution tables and step-by-step recipes in di/AGENTS.md
  • Familiar to developers from Java/C# backgrounds

Trade-offs

  • Requires reflect-metadata + decorator config in tsconfig
  • Symbol indirection harder to trace than plain functions
  • Extra dependency (inversify + reflect-metadata)

Update (2026-05-04)

The vertical-feature refactor preserved InversifyJS but moved from a single shared container in packages/core/src/di/ to per-feature containers in each feature package (packages/<feature>/src/di/container.ts). See ADR-008.