I spent a few hours debugging an incident caused by a misunderstanding of dynamic modules this week, and want to share my learnings to help others avoid my mistake.

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The author shared insights on debugging an issue with dynamic modules in NestJS, specifically using the nestjs-temporal library to register multiple Temporal workers. They developed a function to avoid code duplication and prevent incorrect task queue names, but faced issues where only one worker was created due to Nest’s dependency injection caching. By wrapping the dynamic module in another dynamic module and using the 'provideInjectionTokensFrom' property, the author successfully ensured proper worker registration and execution.

Nested Dynamic Modules in NestJS