Skill UI

Vercel Engineering’s authoritative React and Next.js performance guide, offering prioritized rules for waterfalls, bundle size, data fetching, memoization, rendering, caching, and advanced patterns.

Provides a comprehensive, production-ready reference architecture for building complex applications on Vercel using Next.js and TypeScript. It covers modern best practices, including layered directory structure, secure typed environment variable management (Zod), lazy database singleton implementation, API route patterns, and essential Edge Middleware for authentication and routing. Use this guide when starting a new Vercel project or standardizing existing application infrastructure.

This comprehensive guide provides a step-by-step workflow for safely upgrading a full-stack application deployed on Vercel. It covers migrating Vercel CLI versions, updating Node.js runtimes, and handling major Next.js framework version changes. The guide emphasizes breaking change detection, schema updates, and implementing robust preview testing and rollback strategies for a smooth deployment process.

Guides building and scaling Convex backends with TypeScript schemas, queries, mutations, real-time subscriptions, auth, file storage, scheduling, and deployment across React, Next.js, Angular, Vue, Svelte, and RN.

Automatically scans modern API frameworks (Next.js, Express, FastAPI, Django) to generate comprehensive, ready-to-run test suites. It ensures complete coverage for critical areas including authentication, input validation (boundary/injection), error code matrices, pagination, file uploads, and rate limiting. Ideal for TDD, contract testing, and security audits.

Generates high-converting landing pages as ready-to-use Next.js/React TSX components with Tailwind CSS, proven copy frameworks, SEO meta, structured data, and Core Web Vitals targets for marketing campaigns, A/B tests, or conversion-focused sites.

Generates a production-ready SaaS boilerplate with authentication, database schema, billing integration, API routes, and a dashboard built with Next.js 14 App Router, TypeScript, Tailwind, shadcn/ui, Drizzle ORM, and Stripe—ideal for bootstrapping new subscription-based products.

Enables production-grade Stripe integrations across Next.js, Express, and Django with subscriptions, proration-aware upgrades/downgrades, usage-based billing, checkout sessions, idempotent webhooks, customer portals, and invoice automation for SaaS billing flows.

This comprehensive guide facilitates the development of a production-ready Minimum Viable Product (MVP) for a SaaS business. It covers the entire lifecycle, including idea validation, modern tech stack selection (Next.js, Supabase, Stripe), architectural design for multi-tenancy, database schema planning, authentication setup, payment integration, and a detailed pre-launch checklist for technical and marketing readiness.

This expert assists developers in building type-safe, high-performance database layers using Drizzle ORM with TypeScript. It provides deep knowledge of schema design, complex relational querying (joins, aggregations), managing migrations via Drizzle Kit, and seamless integration with modern stacks like Next.js, tRPC, and serverless environments. Ideal for developers needing a zero-overhead, type-safe ORM alternative.

This script automates the generation of a complete set of favicons (including favicon.ico, various PNG sizes, and SVG) from a single source image. It intelligently detects the project framework (e.g., Next.js, Rails, Gatsby) to place assets in the correct static directory, generates the necessary webmanifest, and updates the project's HTML/layout files with the proper link tags.

Master robust and type-safe patterns for React development using fp-ts. This guide covers managing state with Option, sophisticated form validation using Either (collecting all errors), and handling asynchronous data fetching with TaskEither. It promotes a highly functional, predictable coding style for React 18/19 and Next.js.