React Component Generator

React Components in 2026: The Modern Idiom

React turns 13 years old this year. The component model is the same; the way you write components is very different from 2013. Functional components, hooks, TypeScript, utility CSS, and ESM-first tooling are now the default. This generator reflects that, it produces the kind of component a current React/Next/Vite project actually wants, not the legacy class-based shape that fills older tutorials.

The Modern Component Shape

Decomposing what's standard here:

1. Named export (not default). Easier to refactor (renames are tracked), easier to grep, plays better with autoimport.
2. TypeScript interface for props, with JSDoc comments. The comments show up as IDE tooltips on the consumer side.
3. Functional component with hooks for state.
4. Tailwind for styling, utility classes directly in JSX, no separate CSS file.
5. Lucide for icons, tree-shakable, sized via className.
6. Accessibility, aria-label on the icon-only button.
7. JSDoc with @example, discoverable usage.

This is the shape most modern React codebases converge on.

Hooks: The Core API

The hooks you use 80% of the time:

The hooks you use less often but need to know:

Custom Hooks

The killer feature of hooks: composition into custom hooks. Anything reusable goes in a hook:

Custom hooks make stateful logic reusable across components without HOCs or render-props (the pre-hook patterns that hooks replaced).

Props Patterns

Required vs optional: title: string is required; onDelete?: () => void is optional. Use optional sparingly, every optional prop is a branch you have to handle.

Default values: destructuring defaults: function Card({ title, color = "blue" }). Cleaner than Card.defaultProps.

Children: children: React.ReactNode, accepts any JSX content. Use for layout/wrapper components.

Render props / function children: children: (data: T) => React.ReactNode, for components that provide data but let the consumer render. Less common with hooks but still useful.

Polymorphic components: as?: React.ElementType, <Button as="a" href="...">. Powerful, complex to type correctly.

Component composition: a Card with <CardHeader>, <CardBody>, <CardFooter> subcomponents. Better than a Card with 15 props.

Naming Conventions

• Components: PascalCase (UserProfile, not userProfile or user_profile).
• Hooks: use prefix (useAuth, useFetchData). React lint rules enforce this.
• Event handlers: onClick, onSubmit for props; handleClick, handleSubmit for internal implementations.
• Boolean props: isActive, hasError, canEdit, verbs imply truthiness.

Styling Approaches

For new projects: Tailwind unless you have a specific reason otherwise. Less to learn for new devs (it's just CSS class names), works with React Server Components (CSS-in-JS often doesn't), proven scalability.

Performance Pitfalls

Re-renders from new object/array references:

Inline functions as props: change every render. Usually fine, but if the child is memoized (React.memo), wrap in useCallback:

useEffect dependency arrays: must include every variable used inside. ESLint plugin enforces. Stale closures from missing deps are the #1 hooks bug.

Missing keys in lists: <ul>{items.map(i => <li key={i.id}>{i.text}</li>)}</ul>. Without keys, React re-creates DOM nodes unnecessarily, breaking focus, animation, input state.

Premature optimization: useMemo and useCallback aren't free, they add memory and comparison cost. Use only when profiling shows a problem.

Server Components and the React 19 Shift

React 19 (released late 2024) made React Server Components mainstream via frameworks like Next.js App Router. The mental model: some components run on the server (no state, no hooks like useState/useEffect, can directly access DBs and secrets), some run on the client (interactive).

For new Next.js apps: default to Server Components; mark interactive components with "use client". The generator produces client-friendly components (with hooks), add "use client" at the top if dropping into a Next.js App Router project.

Accessibility

A component is broken if it's not accessible. Minimum checklist:

• Semantic HTML: <button> for clickable things, <a> for navigation, <input> with <label>. Not <div onClick>.
• Keyboard navigation: Tab to reach, Enter/Space to activate, Esc to close. Use <button> and it's free.
• aria-label on icon-only controls (no visible text).
• aria-live for dynamic updates announced to screen readers.
• Focus management: when a dialog opens, focus moves in; when it closes, focus returns to the trigger.
• Color contrast: 4.5:1 minimum for text. Tailwind classes don't automatically meet this, check.

Test with: keyboard only (no mouse), screen reader (VoiceOver on Mac, NVDA on Windows), axe-core DevTools extension.

Testing Components

The standard stack: Vitest or Jest as runner, React Testing Library for rendering and interaction, MSW for mocking network.

The key principle (from RTL docs): test from the user's perspective. Find elements the way a user would (by label, by text), not by implementation details (class names, refs).

Privacy

Generation is pure string templating in your browser. Component names, prop names, descriptions you provide stay in the tab. Open DevTools Network during use: zero outbound requests. Sometimes component names hint at unreleased features or proprietary product lines, not the kind of thing to feed to a third-party online generator.