When should you export a module vs export individual providers from a module in NestJS?
Export individual providers for fine-grained control — internal helpers stay private. Re-export a whole module when you want to pass an entire module's public API through to consumers, which is useful for infrastructure bundles. Re-exporting a module is equivalent to exporting all of its exported providers at once.
Individual provider export vs module re-export
Decision guide:
Export individual providers when you want a clean, minimal public API and need to hide implementation details.
Re-export a whole module when building infrastructure bundles or wrapper modules.
Re-exporting exposes everything the re-exported module itself exports — no more, no less.
Prefer individual exports for feature modules; prefer module re-exports for infrastructure aggregators.