Which testing frameworks is this compatible with?

It is designed to work with Vitest and any setup that uses real fetch calls intercepted by MSW for assertion of request metadata.

How does it identify missing API mocks?

It utilizes a specialized parity script to compare defined routes in your API package against the registered handlers in your MSW package.

What is the primary purpose of the Preen MSW Parity skill?

It ensures that your Mock Service Worker (MSW) handlers accurately represent your actual API routes, highlighting gaps in test coverage and preventing stale mocks.

Can I use this skill to enforce testing standards in CI/CD?

Yes, the skill supports a strict flag that can be used to fail checks if parity has missing routes or low-confidence matcher coverage.

Preen MSW Parity

Name: Preen MSW Parity
Author: a2f0

bya2f0

0•

보안 및 테스팅

Audits Mock Service Worker (MSW) coverage against API routes to ensure high-fidelity testing and environment parity.

The Preen MSW Parity skill automates the synchronization between your backend API routes and Mock Service Worker handlers. It provides a structured workflow for identifying missing mocks, prioritizing high-value gaps like authentication and session routes, and validating that tests remain accurate as the API evolves. By running parity scripts and enforcing strict coverage checks, it helps developers maintain a reliable mocking layer that mirrors production behavior, reducing regression risks during local development and CI/CD cycles.

주요 기능

01Priority-based gap analysis focusing on mission-critical endpoints

02Strict mode support to fail builds on low-confidence matcher coverage

030 GitHub stars

04Machine-readable JSON output for CI/CD integration

05Automated parity reporting between API routes and MSW handlers

06Validation of Vitest coverage against real fetch and MSW interactions

사용 사례

01Incremental migration of legacy fetch mocks to a standardized MSW implementation

02Generating high-confidence test suites that assert request metadata and response payloads

03Synchronizing MSW mocks immediately after adding or modifying backend API endpoints

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add a2f0/tearleads preen-msw-parity

For use in Claude.ai and ChatGPT

Download Skill