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Found 1,934 Skills
RED-GREEN-REFACTOR cycle with strict phase gates. Write failing test first, implement minimum code to pass, then refactor while keeping tests green. Use when implementing new features, fixing bugs with test-first approach, improving test coverage, or when user mentions TDD. Use for "TDD", "test first", "red green refactor", "write tests", or "implement with tests". Do NOT use for debugging existing failures (use systematic-debugging) or for refactoring without new tests (use systematic-refactoring).
Expert guide for writing Effect-TS code, including project setup, core principles, data modeling with Schema, error handling, and the Context.Tag service pattern. Use when writing, refactoring, or analyzing TypeScript code using the Effect library.
Test-driven development with red-green-refactor loop. Use when user wants to build features or fix bugs using TDD, asks for test-first development, or wants stronger integration tests.
Use when writing, fixing, editing, reviewing, or refactoring any Python code. Enforces Robert Martin's complete Clean Code catalog—naming, functions, comments, DRY, and boundary conditions.
テスト駆動開発（TDD）ワークフローを実行するスキル。 使用タイミング: (1) 新機能の実装開始時 (2) バグ修正時 (3) リファクタリング前 (4) 「テストから書いて」と言われた時 (5) 品質重視の実装が必要な時。 トリガー例: 「TDDで実装して」「テスト駆動で」「テストから書いて」 「RED-GREEN-REFACTORで」「UserServiceのテストを書いて」
Applies software engineering best practices, design principles, and avoids common anti-patterns. Use when designing systems, reviewing code quality, refactoring legacy code, making architectural decisions, or improving maintainability.
Use when advanced Pytest features including markers, custom assertions, hooks, and coverage configuration.
Guide for how to develop Go apps and modules/libraries. Always use this skill when reading or writing Go code.
Complete fullstack development mastery covering modern web architectures, automation tools, AI integration, and production deployment practices
2. Create Feature Design Document
ALWAYS use when writing code importing "@vue/test-utils". Consult for debugging, best practices, or modifying @vue/test-utils, vue/test-utils, vue test-utils, vue test utils, test-utils, test utils.
Core code quality principles for writing maintainable code. Use when reviewing code for design violations, assessing code quality, or applying architectural patterns like composition, immutability, and fail-fast.