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Found 337 Skills
React testing best practices using React Testing Library, Vitest, and Jest. Use when writing, reviewing, or generating tests for React components, hooks, context providers, async interactions, or form submissions. Triggers on tasks like "write a test for this component", "add unit tests", "test this hook", "mock this API call", "improve test coverage", or "set up Vitest".
Generate runnable Vitest and Playwright test files from BDD test cases and scaffold code. Use when generating test implementations.
Write and review unit tests for Vue 3 + TypeScript + Vitest + Pinia codebases. Use when creating or updating tests for components, composables, and stores; mocking Pinia with createTestingPinia; applying Vue Test Utils patterns; and enforcing black-box assertions over implementation details.
React 19 performance patterns and composition architecture for Vite + Cloudflare projects. 50+ rules ranked by impact — eliminating waterfalls, bundle optimisation, re-render prevention, composition over boolean props, server/client boundaries, and React 19 APIs. Use when writing, reviewing, or refactoring React components. Triggers: 'react patterns', 'react review', 'react performance', 'optimise components', 'react best practices', 'composition patterns', 'why is it slow', 'reduce re-renders', 'fix waterfall'.
Complete guide for Halo CMS theme development. Covers theme directory structure, Thymeleaf template syntax, template route mapping, template variables, Finder API, global variables, theme settings, static asset management, Vite integration, and custom tags. Use when: creating or modifying Halo themes, writing Thymeleaf templates, calling Finder APIs, configuring theme.yaml / settings.yaml, integrating Vite, adding settings forms, handling static asset references, or implementing comment/footer extension points.
Use when initializing a new Vite + React (CSR) project or when an existing Vite React project needs missing configuration (ESLint, Prettier, TanStack Query, React Router, Zustand, Tailwind CSS, VSCode, Cursor, Antigravity settings, path aliases).
Vite 8+ development with Rolldown and Oxc. Use when configuring vite.config.ts, migrating rollup/esbuild-era configs, authoring Vite plugins with environments and hook filters, or troubleshooting SSR, Module Runner, and production build behavior in Vite 8. Triggers on vite, vite.config.ts, rolldownOptions, oxc, module runner, environments, hotUpdate, and lightning css.
[production-grade] Implements autonomous testing and self-healing workflow. After code generation, automatically runs tests (unit, integration, visual, E2E), detects bugs, attempts auto-fix, and continues development. Requires: Vitest, Playwright, Applitools, LLM access.
React component testing with React Testing Library, Vitest/Jest, MSW for network mocking, accessibility assertions with axe, and the decision boundary between component tests and Playwright/Cypress end-to-end runs. Use when writing or fixing tests for React components, hooks, or pages.
Testing guide using Vitest. Use when writing tests (.test.ts, .test.tsx), fixing failing tests, improving test coverage, or debugging test issues. Triggers on test creation, test debugging, mock setup, or test-related questions.
Modern TypeScript/JavaScript testing with Vitest. Fast unit and integration tests, native ESM support, Vite-powered HMR, and comprehensive mocking. Use for testing TS/JS projects.
Provides comprehensive guidance for Vitest testing framework including fast test execution, Vite integration, component testing, mocking, and configuration. Use when the user asks about Vitest, needs to write fast unit tests, test Vue/React components, or configure Vitest with Vite projects.