Does this skill support the Next.js App Router?

Yes, it is specifically optimized for Next.js 14+ and prioritizes Server Components and Server Actions as the default development patterns.

What styling frameworks are supported?

The skill defaults to Tailwind CSS combined with Class Variance Authority (CVA) for building responsive, accessible, and themeable UI components.

How does this skill handle type safety?

It enforces strict TypeScript 5+ configurations, forbids the use of 'any' in favor of 'unknown' with type guards, and requires explicit typing for all function parameters and returns.

Can I use this skill for automated testing?

Absolutely. It includes comprehensive guidance for unit and integration testing with Vitest and React Testing Library, as well as E2E testing with Playwright.

Modern TypeScript & React Development

Name: Modern TypeScript & React Development
Author: levifig

bylevifig

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Developer Tools

Streamlines the creation of production-ready web applications using TypeScript 5, Next.js 14, and the modern React ecosystem.

This skill provides Claude Code with a comprehensive, opinionated framework for building high-performance web applications. It enforces best practices such as strict TypeScript typing, Next.js App Router patterns, and accessible UI development with Tailwind CSS. By integrating specialized knowledge in state management, automated testing with Vitest, and performance optimization, it helps developers ship clean, maintainable, and scalable frontend codebases while adhering to strict architectural standards and modern ESM patterns.

Key Features

011 GitHub stars

02Automated testing suite setup with Vitest and React Testing Library

03Next.js 14 App Router implementation including Server Components and Actions

04Accessible UI design patterns using Tailwind CSS and CVA

05Standardized state management using Zustand and React Query

06Advanced TypeScript 5+ type safety and strict mode enforcement

Use Cases

01Implementing complex forms and server-side validation using React Hook Form and Zod

02Migrating legacy JavaScript or older React projects to a modern TypeScript stack

03Scaffolding and building new Next.js 14 applications with a robust architectural foundation

Key Features

011 GitHub stars

02Automated testing suite setup with Vitest and React Testing Library

03Next.js 14 App Router implementation including Server Components and Actions

04Accessible UI design patterns using Tailwind CSS and CVA

05Standardized state management using Zustand and React Query

06Advanced TypeScript 5+ type safety and strict mode enforcement

Use Cases

01Implementing complex forms and server-side validation using React Hook Form and Zod

02Migrating legacy JavaScript or older React projects to a modern TypeScript stack

03Scaffolding and building new Next.js 14 applications with a robust architectural foundation