writing-tsdocs

作者： medusajs

Adds and updates TypeDoc (TSDoc) comments to TypeScript source files in the Medusa codebase. Covers HTTP types, API routes, UI components, data models, service…

npx skills add https://github.com/medusajs/medusa --skill writing-tsdocs

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Writing Medusa TSDocs

Adds TypeDoc (TSDoc) comments to Medusa TypeScript source files. Follows TypeDoc conventions and uses custom tags defined in www/utils/packages/typedoc-config/tsdoc.json.

Constraints

CRITICAL: Violating these produces incorrect or broken documentation.

Never document unexported items — only exported interfaces, types, functions, classes
Never add TSDocs to test files — skip *.spec.ts, *.test.ts, __tests__/
Never fabricate @since version numbers — only use the version passed in the prompt
Never remove or modify existing TSDocs — only add where missing
Never modify logic — only add/edit comment blocks
For Medusa-specific custom tags, only use those defined in tsdoc.json: @expandable, @featureFlag, @since, @apiIgnore, @schema, @tags, @version, @keep, @customNamespace, @namespaceMember

Load Reference Files When Needed

Load the reference file for the file type you're documenting before writing any TSDocs.

Path pattern	Load
`packages/core/types/src/http/`	`reference/http-types.md`
`packages/medusa/src/api/admin/` or `/store/`	`reference/api-routes.md`
`packages/design-system/ui/src/components/`	`reference/ui-components.md`
`packages/modules/*/src/models/`	`reference/data-models.md`
`packages/core/types/src/` (non-http)	`reference/service-interfaces.md`
`packages/core/js-sdk/src/`	`reference/service-interfaces.md`
`packages/core/utils/src/` (abstract providers)	`reference/service-interfaces.md`
`packages/core/workflows-sdk/src/utils/composer/`	`reference/service-interfaces.md`
`packages/core/core-flows/src/` (workflows)	`reference/workflows-steps.md`
`packages/core/core-flows/src/` (steps)	`reference/workflows-steps.md`
`packages/core/utils/src/core-flows/events.ts`	`reference/events.md`

Quick Reference

TSDoc block format

/**
 * Brief description.
 */
export interface Foo {
  /**
   * The foo's ID.
   */
  id: string
}

Per-type depth guide

File type	What to document	Key Medusa tags
HTTP types	Every exported interface/type + all properties	`@expandable` on nested objects
API routes	Exported handlers only (minimal)	`@featureFlag`, `@since`
UI components	Component + all props	Plain descriptions
Data models	Model + each property	`@since` on new items
Service interfaces	Every method in full	`@param`, `@returns`, `@example`
JS SDK	Every public method	`@param`, `@returns`, `@example`, `@tags`
Providers	Class + every abstract method	`@param`, `@returns`, `@example`
Workflow SDK	Every exported function	`@param`, `@returns`, `@example`
core-flows workflows	Workflow export + hooks	`@summary`, `@featureFlag`, `@since`
core-flows steps	Step export + input type	`@featureFlag`, `@since`, `@example`
Events	Every event constant	`@eventPayload`, `@featureFlag`, `@since`

Medusa custom tags (from `www/utils/packages/typedoc-config/tsdoc.json`)

Tag	Kind	Use when
`@featureFlag <name>`	block	Export requires a feature flag to be enabled
`@expandable`	modifier	Nested object expandable in API queries
`@since <version>`	block	Export was added in this version (prompt-provided only)
`@apiIgnore`	modifier	Exclude from API docs output
`@tags <name>`	block	SDK categorization
`@schema`	block	Custom schema documentation
`@keep`	modifier	Preserve during doc generation
`@customNamespace`	block	Assign to custom doc namespace

Standard TypeDoc/JSDoc tags (@param, @returns, @example, @deprecated, @remarks, etc.) are always allowed.

Common Mistakes

Documenting unexported or private items
Using @since without a version being provided in the prompt
Writing property descriptions longer than 2 sentences
Adding @param/@returns to non-method exports (interfaces, types)
Documenting an id field without specifying what resource it belongs to

Reference Files

reference/http-types.md          - HTTP type interfaces: properties, @expandable
reference/api-routes.md          - API routes: @featureFlag, @since, minimal docs
reference/ui-components.md       - UI components: component + inline prop pattern
reference/data-models.md         - DML models: @since, property descriptions
reference/service-interfaces.md  - Methods, SDK, providers, workflow SDK: full JSDoc
reference/workflows-steps.md     - core-flows workflows and steps: @summary, hooks, @example
reference/events.md              - Event constants: @eventPayload, @featureFlag, @since