business-index-splitter

To split type declarations and implementation logic in an index.ts file, this Skill extracts interfaces and enums into types.ts and runtime functions into service.ts. It then rewrites index.ts to only re-export these files, preserving the original public API.

The best way to refactor business modules in a TypeScript monorepo CLI is to separate mixed index.ts code into distinct types.ts and service.ts files. This reduces coupling and improves maintainability while keeping original export names intact.

Yes, this Skill specifically targets packages/cli/src/business/<module>/ directories where a single index.ts contains both type definitions and runtime code, separating them into types.ts and service.ts files.

Splitting mixed TypeScript code into service and types files preserves API compatibility by rewriting the original index.ts to only re-export the extracted modules. Callers continue importing from index.ts using the same public export names without breaking changes.

You need to separate types and runtime code in a TypeScript module when a single index.ts packs both type definitions and implementations, creating tight coupling. Splitting them reduces coupling and improves maintainability for monorepo CLI business modules.