edit-library-transformers

What problem does it solve?

This skill helps engineers create and update Library-Implemented Miroir Transformers by providing a structured, repeatable workflow that ties together TypeScript handler code, transformer registrations, and build-time/type-generation steps. It reduces manual wiring and ensures consistency across in-memory and database-backed execution paths.

Core Features & Use Cases

• Guided TDD workflow for library-based transformers, including pre-flight tests, test-first development, and verification.
• End-to-end integration covering runtime and build-time registrations, schema updates, and type generation to keep transformers in sync.
• Targeted for transformers with transformerImplementationType: "libraryImplementation" and for editing handler code in TransformerrsForRuntime.ts.
• Real-world use cases include creating new transformers (e.g., formatDate) or updating existing TypeScript handlers and their registrations.

Quick Start

• Run the pre-flight unit and integration tests to establish baseline.
• Create a new TransformerDefinition JSON using the provided template and set transformerImplementationType to "libraryImplementation".
• Implement the TypeScript handler in TransformersForRuntime.ts and register it in the appropriate runtime and build-time collections.
• Export and register the transformer in Transformers.ts and ensure schema/type generation entries are updated.
• Execute devBuild and the full test suite to validate end-to-end functionality.