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MSW (Mock Service Worker) best practices for API mocking in tests (formerly test-msw). This skill should be used when setting up MSW, writing request handlers, or mocking HTTP APIs. This skill does NOT cover general testing patterns (use test-vitest or test-tdd skills) or test methodology.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
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直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/pproenca/dot-skills --skill msw命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
Drizzle ORM against PostgreSQL inside a Next.js App Router app. Covers client construction (globalThis singleton across HMR, serverless pool sizing, `prepare:false` behind PgBouncer/Supavisor, driver choice when you need interactive transactions, `server-only`), reads in Server Components under Next.js 16 Cache Components (`use cache` superseding `unstable_cache` and the `revalidate`/`dynamic` segment configs, Suspense boundaries, React `cache()` dedupe), Server Actions (authorization inside the action, `updateTag` vs `revalidateTag`, `after()`), Postgres schema types (timestamptz, identity vs serial, jsonb, numeric-as-string, bigint modes), drizzle-kit migrations (generate vs push, CONCURRENTLY outside the migrator, NOT VALID constraints, rename prompts), transactions and pooled connections, and Postgres query traps (keyset pagination, count cost, driver-dependent `db.execute()` shape, NOT IN nulls, prepared statements). Use when writing or reviewing Drizzle + Postgres code in Next.js.
Corrects the wrong defaults a model has when designing a relational schema — the DDL decisions an experienced engineer makes differently. Use when creating or reviewing tables, migrations, ER models, or ORM schema definitions. Covers identity and keys (surrogate vs natural, identity vs serial, uuidv7, composite keys that make cross-tenant references impossible), relationships (polymorphic foreign keys the database cannot enforce, referential actions, unindexed FK columns, disjoint subtypes), invariants the engine can prove instead of application code (EXCLUDE, partial unique indexes, CHECK limits, deferrable cycles, NOT VALID), types (timestamptz, exact money, range types, enum vs lookup table), derived and encoded data (generated columns, JSONB as an escape hatch), and time (events vs in-place updates, soft-delete flags that silently disable constraints, temporal keys). NOT for query tuning, index selection for read paths, or connection pooling.
Distills a logical relational-database design methodology into rules an agent applies while designing or reviewing a schema. Covers the design sequence (mission → tables → fields → keys → relationships → business rules → views → integrity review), one-subject-per-table decomposition, atomic single-valued fields, candidate/primary/foreign keys, relationship types with deletion rules and participation, the four levels of data integrity, database-vs-application business rules, validation tables, views for derived data, and the flat-file / spreadsheet / RDBMS-driven antipatterns to avoid. The structure is logical and RDBMS-agnostic, and normalized by construction. Use when designing a new relational schema, reviewing or refactoring an existing one, resolving redundant or repeating data, choosing keys, modeling relationships, or deciding where a constraint belongs.
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正在显示 SKILL.md
| name | msw |
| description | MSW (Mock Service Worker) best practices for API mocking in tests (formerly test-msw). This skill should be used when setting up MSW, writing request handlers, or mocking HTTP APIs. This skill does NOT cover general testing patterns (use test-vitest or test-tdd skills) or test methodology. |
Comprehensive API mocking guide for MSW v2 applications, designed for AI agents and LLMs. Contains 45 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.
Reference these guidelines when:
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Setup & Initialization | CRITICAL | setup- |
| 2 | Handler Architecture | CRITICAL | handler- |
| 3 | Test Integration | HIGH | test- |
| 4 | Response Patterns | HIGH | response- |
| 5 | Request Matching | MEDIUM-HIGH | match- |
| 6 | GraphQL Mocking | MEDIUM | graphql- |
| 7 | Advanced Patterns | MEDIUM | advanced- |
| 8 | Debugging & Performance | LOW | debug- |
setup-server-node-entrypoint - Use correct entrypoint for Node.js (msw/node)setup-lifecycle-hooks - Configure server lifecycle in test setupsetup-worker-script-commit - Commit worker script to version controlsetup-node-version - Require Node.js 18+ for MSW v2setup-unhandled-requests - Configure unhandled request behaviorsetup-typescript-config - Configure TypeScript for MSW v2handler-happy-path-first - Define happy path handlers as baselinehandler-domain-grouping - Group handlers by domainhandler-absolute-urls - Use absolute URLs in handlershandler-shared-resolvers - Extract shared response logic into resolvershandler-v2-response-syntax - Use MSW v2 response syntaxhandler-request-body-parsing - Explicitly parse request bodieshandler-resolver-argument - Destructure resolver arguments correctlyhandler-reusability-environments - Share handlers across environmentstest-reset-handlers - Reset handlers after each testtest-avoid-request-assertions - Avoid direct request assertionstest-concurrent-boundary - Use server.boundary() for concurrent teststest-fake-timers-config - Configure fake timers to preserve queueMicrotasktest-async-utilities - Use async testing utilities for mock responsestest-clear-request-cache - Clear request library caches between teststest-jsdom-environment - Use correct JSDOM environment for Jestresponse-http-response-helpers - Use HttpResponse static methodsresponse-delay-realistic - Add realistic response delaysresponse-error-simulation - Simulate error responses correctlyresponse-one-time-handlers - Use one-time handlers for sequential scenariosresponse-custom-headers - Set response headers correctlyresponse-streaming - Mock streaming responses with ReadableStreammatch-url-patterns - Use URL path parameters correctlymatch-query-params - Access query parameters from request URLmatch-custom-predicate - Use custom predicates for complex matchingmatch-http-methods - Match HTTP methods explicitlymatch-handler-order - Order handlers from specific to generalgraphql-operation-handlers - Use operation name for GraphQL matchinggraphql-error-responses - Return GraphQL errors in correct formatgraphql-batched-queries - Handle batched GraphQL queriesgraphql-variables-access - Access GraphQL variables correctlyadvanced-bypass-requests - Use bypass() for passthrough requestsadvanced-cookies-auth - Handle cookies and authenticationadvanced-dynamic-scenarios - Implement dynamic mock scenariosadvanced-vitest-browser - Configure MSW for Vitest browser modeadvanced-file-uploads - Mock file upload endpointsdebug-lifecycle-events - Use lifecycle events for debuggingdebug-verify-interception - Verify request interception is workingdebug-common-issues - Know common MSW issues and fixesdebug-request-logging - Log request details for debuggingRead individual reference files for detailed explanations and code examples:
references/{prefix}-{slug}.mdorval skilltanstack-query skilltest-vitest or test-tdd skillsFor the complete guide with all rules expanded: AGENTS.md