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Found 139 Skills
Evidence-based test debugging enforcing systematic root cause analysis. Use when tests are failing, pytest errors occur, test suite not passing, debugging test failures, or fixing broken tests. Prevents assumption-based fixes by enforcing proper diagnostic sequence. Works with Python (.py), JavaScript/TypeScript (.js/.ts), Go, Rust test files. Supports pytest, jest, vitest, mocha, go test, cargo test, and other frameworks.
TDD patterns, test writing strategies, coverage guidance, mocking patterns. Use when: write tests, TDD, test coverage, unit test, integration test, E2E test, mocking, test organization, pytest, vitest, jest.
Comprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues, OpenTelemetry instrumentation, Zod v4 validation, env.mjs configuration, tenant isolation patterns, or async patterns. Covers layered architecture (tRPC procedures → services, queue processors → services), dual database system (PostgreSQL + ClickHouse), projectId filtering for multi-tenant isolation, traceException error handling, observability patterns, and testing strategies (Jest for web, vitest for worker).
Vite 8 (Rolldown-powered) build tool — configuration, plugin API, SSR, and Rolldown migration. Use when working with Vite projects, vite.config.ts, HMR, Vite plugins, library mode, SSR builds, or migrating from Vite 5/6 to Vite 8. Trigger when the user mentions Vite, vite.config, vitest (config side), HMR, Rolldown, Rollup plugin, or asks to configure, debug, or optimize a Vite-based project (Vue, React, Svelte, Nuxt, SvelteKit).
Use when scaffolding a new Nuxt 4 project with standard config files (prettier, eslint, gitignore, husky, vitest, tsconfig, sops) and bun scripts.
Освойте enterprise-разработку на TypeScript с типобезопасными паттернами, современными инструментами и интеграцией с фреймворками. Этот навык предоставляет всестороннее руководство по TypeScript 5.9+, охватывая основы системы типов (дженерики, маппинг типов, условные типы, оператор satisfies), enterprise-паттерны (обработка ошибок, валидация с помощью Zod), NestJS для масштабируемых API и LangChain.js для AI-приложений. Используйте при создании типобезопасных приложений, миграции кодовых баз с JavaScript, настройке современных инструментов (Vite 7, pnpm, ESLint, Vitest), внедрении продвинутых паттернов типизации или сравнении TypeScript с подходами Java/Python.
Use this skill whenever writing, reviewing, debugging, or refactoring TypeScript code that uses the Effect-TS library. Trigger when you see imports from `effect`, `effect/*`, or any `@effect/*` scoped package (schema, platform, sql, opentelemetry, cli, cluster, rpc, vitest). Trigger on Effect-specific constructs: Effect.gen generators, Schema.Struct/Schema.Class definitions, Layer/Context.Tag/Service patterns, Effect.pipe pipelines, Data.TaggedError/Data.Class error types, Ref/Queue/PubSub/Deferred concurrency primitives, Match module, Config providers, Scope/Exit/Cause/Runtime patterns, or any code using Effect's typed error channel (E parameter). Also trigger when the user asks about Effect patterns, migration from Promises/fp-ts/neverthrow to Effect, or how to structure an Effect application. Covers the full ecosystem: core Effect type, Schema validation, error management, concurrency (fibers, queues, semaphores, pools), streams/sinks, services and layers (DI), resource management, scheduling, observability, platform APIs, and AI integration. Do NOT trigger for React's useEffect, Redux side effects, or general English usage of "effect" unless the context clearly involves the Effect-TS library.
SonarQube/SonarCloud integration for continuous code quality. Setup, configuration, quality gates, and CI/CD integration. USE WHEN: user mentions "SonarQube", "SonarCloud", "quality gates", asks about "code coverage", "technical debt", "code smells", "sonar-project.properties", "SonarScanner" DO NOT USE FOR: ESLint/Biome - use linting skills, OWASP security - use security skills, testing tools - use Vitest/Playwright skills
Testing patterns for React and React Router v7 - Vitest, React Testing Library, route testing, mocking loaders/actions
This skill should be used when the user wants to implement features or fix bugs using test-driven development. Enforces the RED-GREEN-REFACTOR cycle with vertical slicing, context isolation between test writing and implementation, human checkpoints, and auto-test feedback loops. Uses multi-agent orchestration with the Task tool for architecturally enforced context isolation. Supports Jest, Vitest, pytest, Go test, cargo test, PHPUnit, and RSpec.
Generate convex-test tests for the app's Convex functions.
Regression testing strategies for AI-assisted development. Sandbox-mode API testing without database dependencies, automated bug-check workflows, and patterns to catch AI blind spots where the same model writes and reviews code.