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Found 1,254 Skills
Use when working with TypeScript projects, tooling, and ecosystem. Covers the type system, project configuration, package management, CLI development, and library packages. USE FOR: TypeScript language features, choosing build tools, package managers, project structure, type system guidance, runtime selection DO NOT USE FOR: specific tool configuration details (use the sub-skills: project-system, package-management, cli, packages)
DCE-safe require() patterns and edge runtime constraints. Use when writing conditional require() calls, guarding Node-only imports (node:stream etc.), or editing define-env-plugin.ts / app-render / stream-utils for edge builds. Covers if/else branching for webpack DCE, TypeScript definite assignment, the NEXT_RUNTIME vs real feature flag distinction, and forcing flags false for edge in define-env.ts.
Migrate TypeScript library projects from tsup to tsdown. Provides complete option mappings, config transformation rules, default value differences, and unsupported option alternatives so AI agents can intelligently perform migrations.
Generates production-ready React components with TypeScript, Tailwind CSS, proper accessibility, and test scaffolding. Use when asked to create a new React component.
Enforces a disciplined Red-Green-Refactor (TDD) workflow in TypeScript/Node.js. Use this whenever creating new features, fixing bugs, or migrating logic to ensure high-quality, verifiable implementations.
Complete reference for the Galileo AI platform TypeScript/JS SDK for evaluating, observing, and protecting GenAI applications. Use when building Node.js or TypeScript applications that need LLM evaluation, production observability, tracing, or runtime guardrails with Galileo.
[Pragmatic DDD Architecture] How to structure **Use Cases** using DDD and Railway-Oriented Programming (neverthrow Result types). Tailored for TypeScript + drizzle-orm + node-postgres stack. **Use whenever creating or modifying any Use Case class — even simple ones like "Exists" or "List" operations — to ensure type-safe error unions, proper transactional boundaries, Value Object-only contracts, auth-first patterns, and Result-based error handling.** Includes references to working examples (Create, List, Exists patterns). Depends on 'repositories' skill.
Implement, debug, refactor, migrate, review, or explain Effect TypeScript code. Use when a task touches `effect` or `@effect/*` APIs, especially services, layers, schemas, runtime wiring, platform or CLI packages, Effect testing, or Promise-to-Effect migration.
MUI theming system — createTheme, palette, typography, dark mode, component overrides, TypeScript augmentation, and design tokens
Language-specific verification for Python, TypeScript/JavaScript, and Go. Checks type safety, language idioms, and best practices. Use when asked to "verify language", "check types", or for language-specific checks.
Angular 21 development with modern best practices including signals, standalone components, reactive patterns, and accessibility. Use when creating Angular components, services, templates, or performing any Angular frontend development work. Covers TypeScript strict typing, signal-based state management, reactive forms, lazy loading, ng-icon setup, and Tailwind styling.
Hono RPC - end-to-end type-safe API client generation with hc client and TypeScript inference