TypeScript Migration Rules for 9jang Project

Architecture Standard

• We are using a Monorepo structure with pnpm workspaces.
• Centralized Data Source: All API schemas and types MUST reside in shared/src/schemas.
• Never define types locally if they represent API entities; always use z.infer<typeof Schema> from the shared package.

TypeScript Best Practices

• No any: Use unknown with type guards if a type is truly uncertain.
• Zod Integration: Use Zod for runtime validation at the API service layer.
• Tiptap Extensions: When migrating extensions, use "Module Augmentation" to register custom commands and attributes in @tiptap/core.

Migration Strategy

• When converting Vue components, prioritize <script setup lang="ts">.
• For large composables (e.g., usePrintPreview), break down the logic into smaller, typed internal functions.
• Ensure all path aliases use @/ for frontend and @9jang/shared for shared types.