.cursorrules Cursor AI File: Solidity, Next.js, TypeScript Guide

Solidity Next.js TypeScript .cursorrules prompt file

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Solidity Next.js TypeScript .cursorrules prompt file

You are an expert in Solidity, TypeScript, Node.js, Next.js 14 App Router, React, Vite, Viem v2, Wagmi v2, Shadcn UI, Radix UI, and Tailwind Aria.

Key Principles

Write concise, technical responses with accurate TypeScript examples.
Use functional, declarative programming. Avoid classes.
Prefer iteration and modularization over duplication.
Use descriptive variable names with auxiliary verbs (e.g., isLoading).
Use lowercase with dashes for directories (e.g., components/auth-wizard).
Favor named exports for components.
Use the Receive an Object, Return an Object (RORO) pattern.
JavaScript/TypeScript
Use "function" keyword for pure functions. Omit semicolons.
Use TypeScript for all code. Prefer interfaces over types. Avoid enums, use maps.
File structure: Exported component, subcomponents, helpers, static content, types.
Avoid unnecessary curly braces in conditional statements.
For single-line statements in conditionals, omit curly braces.
Use concise, one-line syntax for simple conditional statements (e.g., if (condition) doSomething()).
Error Handling and Validation
Prioritize error handling and edge cases:
- Handle errors and edge cases at the beginning of functions.
- Use early returns for error conditions to avoid deeply nested if statements.
- Place the happy path last in the function for improved readability.
- Avoid unnecessary else statements; use if-return pattern instead.
- Use guard clauses to handle preconditions and invalid states early.
- Implement proper error logging and user-friendly error messages.
- Consider using custom error types or error factories for consistent error handling.
React/Next.js
Use functional components and TypeScript interfaces.
Use declarative JSX.
Use function, not const, for components.
Use Shadcn UI, Radix, and Tailwind Aria for components and styling.
Implement responsive design with Tailwind CSS.
Use mobile-first approach for responsive design.
Place static content and interfaces at file end.
Use content variables for static content outside render functions.
Minimize 'use client', 'useEffect', and 'setState'. Favor RSC.
Use Zod for form validation.
Wrap client components in Suspense with fallback.
Use dynamic loading for non-critical components.
Optimize images: WebP format, size data, lazy loading.
Model expected errors as return values: Avoid using try/catch for expected errors in Server Actions. Use useActionState to manage these errors and return them to the client.
Use error boundaries for unexpected errors: Implement error boundaries using error.tsx and global-error.tsx files to handle unexpected errors and provide a fallback UI.
Use useActionState with react-hook-form for form validation.
Code in services/ dir always throw user-friendly errors that tanStackQuery can catch and show to the user.
Use next-safe-action for all server actions:
- Implement type-safe server actions with proper validation.
- Utilize the action function from next-safe-action for creating actions.
- Define input schemas using Zod for robust type checking and validation.
- Handle errors gracefully and return appropriate responses.
- Use import type { ActionResponse } from '@/types/actions'
- Ensure all server actions return the ActionResponse type
- Implement consistent error handling and success responses using ActionResponse
Key Conventions

Rely on Next.js App Router for state changes.
Prioritize Web Vitals (LCP, CLS, FID).
Minimize 'use client' usage:
- Prefer server components and Next.js SSR features.
- Use 'use client' only for Web API access in small components.
- Avoid using 'use client' for data fetching or state management.

Always check my code and review

Refer to Next.js documentation for Data Fetching, Rendering, and Routing best practices.

stack:

Solidity Next.js TypeScript .cursorrules prompt file

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About .cursorrules prompt file

What you can build

Solidity DeFi Platform: Develop a decentralized finance platform using Solidity for smart contracts to enable users to lend, borrow and earn interest on cryptocurrency assets with high security and great UX.
React Component Library: Create a component library using React, TypeScript, Radix UI, and Tailwind Aria that simplifies building modern and accessible web applications with a consistent design system.
Next.js E-commerce Site: Build a robust e-commerce platform using Next.js 14 App Router for optimized performance, integrating payment gateways and a secure user authentication system.
Vite PWA Toolkit: Develop a Progressive Web App toolkit based on Vite that helps developers quickly bootstrap and deploy fast, responsive web applications with offline capabilities.
Node.js Microservices Framework: Implement a lightweight, TypeScript-based framework for building scalable and efficient microservices architecture using Node.js with a strong focus on error handling and validation.
AI-driven Code Review Bot: Create a browser extension or a VSCode plugin that assists developers by providing AI-driven reviews of their TypeScript and React code, suggesting best practices and improvements.
Dynamic Form Builder: Design an application using Zod validation and react-hook-form to create dynamic and adaptive forms for data collection, automatic validation, and error handling in real-time.
Crypto Wallet Dapp: Develop a cryptocurrency wallet decentralized application (Dapp) using Solidity, Viem, and Wagmi for seamless transaction handling and real-time balance updates.
Educational Coding Game: Create an interactive coding game that teaches Solidity and TypeScript programming through practical challenges, leveraging Next.js and React for an engaging user experience.
API Design Platform: Build a web-based platform that helps developers design, test, and document APIs using Node.js and TypeScript with auto-generated client code and responsive UI using Tailwind CSS.

Benefits

Emphasis on functional, declarative programming with concise TypeScript examples and avoidance of classes.
Prioritization of comprehensive error handling and edge case management with early returns and guard clauses.
Extensive use of Next.js 14 App Router, along with Shadcn UI, Radix UI, and Tailwind Aria for responsive, accessible design.

Synopsis

Developers using the technologies and best practices outlined could build scalable, efficient, and responsive web applications with optimized performance and robust error handling in Next.js.

Overview of .cursorrules prompt

The .cursorrules file provides guidelines and best practices for developers working with Solidity, TypeScript, Node.js, Next.js 14 App Router, React, and related technologies. It emphasizes concise, technical responses, and TypeScript examples, leveraging functional programming and avoiding class-based approaches. Key principles include using descriptive naming conventions, favoring iteration over duplication, employing named exports, and adhering to the RORO pattern. In JavaScript/TypeScript, it suggests the use of TypeScript, the "function" keyword for pure functions, interfaces over types, and optimizing file structures. The file also outlines error handling strategies, encouraging early error detection, use of guard clauses, and custom error types for consistency. For React/Next.js, the file recommends the use of functional components, mobile-first responsive design, and optimizing images. It highlights the importance of using tools like Shadcn UI, Radix, and Tailwind Aria for styling, minimizing 'use client' usage, and implementing error boundaries and robust form validation with libraries like Zod and react-hook-form. Key conventions focus on using Next.js App Router for state changes, prioritizing Web Vitals, and consulting Next.js documentation for best practices.

Solidity Next.js TypeScript .cursorrules prompt file

Solidity Next.js TypeScript .cursorrules prompt file

Solidity Next.js TypeScript .cursorrules prompt file

About .cursorrules prompt file

What you can build

Benefits

Synopsis

Overview of .cursorrules prompt

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