AI Coding Skills for TypeScript

Frontend development skill for React, Next.js, TypeScript, and Tailwind CSS applications. Use when building React components, optimizing Next.js performance, analyzing bundle sizes, scaffolding frontend projects, implementing accessibility, or reviewing frontend code quality.

Deep codebase cleanup — kills dead code, fixes all lint/format warnings, removes orphaned files, cleans stale TODOs, strips security hazards, tightens TypeScript strict mode, and organizes imports. Triggers on: clean up, dead code, unused imports, lint, technical debt cleanup, spring cleaning, tidy up the codebase, remove dead code, code hygiene, declutter.

Scaffolds a browser-based game with Phaser 3, PixiJS, or Three.js including game loop, asset pipeline, responsive canvas, input handling, audio, save/load, and deployment to itch.io or web. Triggers on: "web game", "browser game", "html5 game", "phaser game", "pixi game", "three.js game", "javascript game", "typescript game", "make a game for the browser", "build a web game", "2d browser game", "3d web game", "itch.io game", "canvas game", "webgl game".

Implement authentication and authorization with Better Auth - a framework-agnostic TypeScript authentication framework. Features include email/password authentication with verification, OAuth providers (Google, GitHub, Discord, etc.), two-factor authentication (TOTP, SMS), passkeys/WebAuthn support, session management, role-based access control (RBAC), rate limiting, and database adapters. Use when adding authentication to applications, implementing OAuth flows, setting up 2FA/MFA, managing user sessions, configuring authorization rules, or building secure authentication systems for web applications.

Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C#, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter. Analyzes PRs for complexity and risk, checks code quality for SOLID violations and code smells, generates review reports. Use when reviewing pull requests, analyzing code quality, identifying issues, generating review checklists.

Senior Front-End Developer expertise in ReactJS, NextJS, JavaScript, TypeScript, HTML, CSS, and modern UI/UX frameworks

Write idiomatic TypeScript patterns for clean, maintainable code. Use when writing or refactoring TypeScript classes, functions, modules, or async logic. (triggers: **/*.ts, **/*.tsx, class, function, module, import, export, async, promise)

Generates complete, production-ready SaaS project boilerplate including authentication, database schemas, billing integration, API routes, and a working dashboard using Next.js 14+ App Router, TypeScript, Tailwind CSS, shadcn/ui, Drizzle ORM, and Stripe. Use when the user wants to create a new SaaS app, start a subscription-based web project, scaffold a Next.js application, or mentions terms like starter template, boilerplate, new project, or wiring up auth and payments.

Scaffold and implement authentication in TypeScript/JavaScript apps using Better Auth. Detect frameworks, configure database adapters, set up route handlers, add OAuth providers, and create auth UI pages. Use when users want to add login, sign-up, or authentication to a new or existing project with Better Auth.

Node.js development guidelines covering Payload CMS, Vue.js with TypeScript, and general TypeScript best practices

Configure Better Auth server and client, set up database adapters, manage sessions, add plugins, and handle environment variables. Use when users mention Better Auth, betterauth, auth.ts, or need to set up TypeScript authentication with email/password, OAuth, or plugin configuration.

Expert in TypeScript, Node.js, Next.js App Router, React, Shadcn UI, Radix UI and Tailwind

Bundle TypeScript and JavaScript libraries with blazing-fast speed powered by Rolldown. Use when building libraries, generating type declarations, bundling for multiple formats, or migrating from tsup.

Best practices for Zod schema validation and type inference in TypeScript applications.

Build a complete Chrome browser extension with Manifest V3 -- generate popup UI with React 19 and Tailwind CSS, content scripts with Shadow DOM isolation, background service worker with event-driven architecture, type-safe chrome.storage wrappers (sync and local), type-safe message passing between popup, content, and background contexts, options page with settings management, context menu integration, keyboard shortcuts, and minimum-permission manifest. Uses TypeScript strict mode, Vite with @crxjs/vite-plugin for hot reload, and Vitest for testing. Build a Chrome extension, create browser plugin, make Chrome addon, scaffold browser extension, new Chrome project.

Design and ship production-ready MCP (Model Context Protocol) servers from OpenAPI contracts instead of hand-written tool wrappers. Python and TypeScript support, schema validation, safe evolution. Use when exposing an existing API as an MCP server, building tool integrations for Claude or Codex or Cursor, or scaffolding an MCP project from scratch.

Migrates an MCP server from the original session-oriented protocol to the 2026 stateless spec (finalising July 28, 2026). Upgrades tool schemas to JSON Schema 2020-12, adds cloud-native routing headers, hardens OAuth 2.0/OIDC wiring, and wires W3C Trace Context for observability. Works on TypeScript and Python MCP SDK projects.

Use this skill when writing code that calls the Gemini API for text generation, multi-turn chat, multimodal understanding, image generation, video generation, streaming responses, background research tasks, function calling, structured output, or migrating from the old generateContent API. This skill covers the Interactions API, the recommended way to use Gemini models and agents in Python and TypeScript.