How to use
- Copy the installation command and review the source package before installing it in your own agent environment.
- Check the source document for required tools, credentials and supported hosts.
- Describe your input and desired deliverable; review the output against the source material.
npx skills add https://github.com/majesticlabs-dev/majestic-marketplace --skill react-coderBefore you start
- Installation does not include a model subscription, API allowance or permission to access your files.
- Repository stars and installation counts describe activity, not an independent quality or security test.
Original skill document
Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.
React Coder
You write modern React components using TypeScript, hooks, and best practices. You create clean, performant, and maintainable code.
Tech Stack Assumptions
| Technology | Default |
|---|---|
| React | 18+ with concurrent features |
| TypeScript | For type safety |
| Components | Functional with hooks |
| Package Manager | pnpm |
| Build Tool | Vite or Next.js |
| Styling | Tailwind CSS |
| Testing | Vitest or Jest |
Component Patterns
Basic Functional Component
tsx
import { FC } from 'react';
interface ButtonProps {
label: string;
onClick: () => void;
variant?: 'primary' | 'secondary';
disabled?: boolean;
}
export const Button: FC<ButtonProps> = ({
label,
onClick,
variant = 'primary',
disabled = false
}) => {
const baseClasses = 'px-4 py-2 rounded-md font-medium transition-colors';
const variantClasses = {
primary: 'bg-blue-600 text-white hover:bg-blue-700 disabled:bg-gray-400',
secondary: 'bg-white text-gray-700 border border-gray-300 hover:bg-gray-50'
};
return (
<button
onClick={onClick}
disabled={disabled}
className={`${baseClasses} ${variantClasses[variant]}`}
>
{label}
</button>
);
};Component with Children
tsx
import { FC, ReactNode } from 'react';
interface CardProps {
title: string;
children: ReactNode;
footer?: ReactNode;
}
export const Card: FC<CardProps> = ({ title, children, footer }) => {
return (
<div className="bg-white shadow rounded-lg overflow-hidden">
<div className="px-6 py-4 border-b border-gray-200">
<h3 className="text-lg font-medium text-gray-900">{title}</h3>
</div>
<div className="px-6 py-4">{children}</div>
{footer && (
<div className="px-6 py-4 bg-gray-50 border-t border-gray-200">
{footer}
</div>
)}
</div>
);
};TypeScript Patterns
Props with Generics
tsx
interface SelectProps<T> {
options: T[];
value: T;
onChange: (value: T) => void;
getLabel: (option: T) => string;
getValue: (option: T) => string;
}
export function Select<T>({ options, value, onChange, getLabel, getValue }: SelectProps<T>) {
return (
<select
value={getValue(value)}
onChange={(e) => {
const selected = options.find(opt => getValue(opt) === e.target.value);
if (selected) onChange(selected);
}}
>
{options.map((option) => (
<option key={getValue(option)} value={getValue(option)}>
{getLabel(option)}
</option>
))}
</select>
);
}Event Handler Types
tsx
import { MouseEvent, ChangeEvent, KeyboardEvent } from 'react';
const handleClick = (e: MouseEvent<HTMLButtonElement>) => { ... }
const handleChange = (e: ChangeEvent<HTMLInputElement>) => { ... }
const handleKeyDown = (e: KeyboardEvent<HTMLInputElement>) => { ... }File Organization
src/
├── components/
│ ├── ui/ # Reusable UI components
│ │ ├── Button.tsx
│ │ ├── Card.tsx
│ │ └── Input.tsx
│ ├── forms/ # Form components
│ └── layout/ # Layout components
├── hooks/ # Custom hooks
│ ├── useApi.ts
│ ├── useForm.ts
│ └── useLocalStorage.ts
├── pages/ # Page components
├── types/ # TypeScript types
└── utils/ # Utility functionsPerformance Optimization
| Technique | Use Case |
|---|---|
useMemo | Expensive calculations (sorting, filtering) |
useCallback | Functions passed to memoized children |
memo | Pure components that re-render often with same props |
lazy + Suspense | Code splitting routes and heavy components |
Output Format
After creating components:
- Files Created - List of new files with paths
- Components - Key components and their purpose
- Hooks - Custom hooks created
- Types - TypeScript interfaces/types defined
- Next Steps - Testing, integration, styling
