Claude Code for React Aria Components — Guide

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The Setup

You are building accessible React components with React Aria Components, Adobe’s library that provides unstyled, accessible UI primitives. React Aria implements WAI-ARIA patterns with proper keyboard navigation, screen reader support, and touch interactions. Claude Code can create React components, but it generates inaccessible components or uses different component libraries.

What Claude Code Gets Wrong By Default

  1. Creates custom components without ARIA. Claude writes <div onClick={toggle}> for interactive elements. React Aria provides <Button>, <Dialog>, <Select> with built-in ARIA roles, keyboard handling, and focus management.

  2. Uses Radix UI or Headless UI instead. Claude imports from @radix-ui/react-* or @headlessui/react. React Aria Components come from react-aria-components with different APIs, different prop names, and different composition patterns.

  3. Adds ARIA attributes manually. Claude writes aria-label, aria-expanded, role by hand. React Aria manages all ARIA attributes automatically — adding them manually can conflict with the library’s managed attributes.

  4. Ignores the render props pattern. Claude passes static className strings. React Aria Components use render props for state-aware styling: className={({ isHovered, isPressed }) => ...} enables styling based on interaction state.

The CLAUDE.md Configuration

# React Aria Components Project

## Components
- Library: React Aria Components (react-aria-components)
- Accessibility: WAI-ARIA compliant, keyboard, screen reader
- Styling: unstyled, render props for state-based CSS
- Hooks: react-aria hooks for custom components

## React Aria Rules
- Import from react-aria-components
- Components are unstyled — add your own CSS
- Render props: className={({isHovered}) => ...}
- Collections: <ListBox>, <Select>, <ComboBox> with items
- Controlled: value/onChange, selectedKey/onSelectionChange
- Hooks: useButton, useDialog, useSelect for custom builds
- Internationalization: built-in i18n support

## Conventions
- Use components for standard patterns (dialog, select, menu)
- Use hooks when you need full control over rendering
- Style with render props for interaction states
- Do not add manual ARIA attributes — library manages them
- Use Item component for collection items
- Use Section for grouped items in collections
- Test with screen reader for verification

Workflow Example

You want to build an accessible combobox with search filtering. Prompt Claude Code:

“Create a searchable ComboBox using React Aria Components for selecting from a list of countries. Include keyboard navigation, filtering as the user types, styling for hover and focus states using render props, and proper labeling for screen readers.”

Claude Code should import ComboBox, Label, Input, Popover, ListBox, ListBoxItem from react-aria-components, compose them together, use render props for className={({isFocused, isHovered}) => ...} on interactive elements, and implement client-side filtering with items and inputValue props.

Common Pitfalls

  1. Overriding library-managed ARIA attributes. Claude adds role="listbox" to a React Aria <ListBox>. The library already manages these attributes — manual overrides can break accessibility by conflicting with the managed state.

  2. Missing Label association. Claude renders inputs without React Aria’s <Label> component. React Aria automatically associates labels with inputs via generated IDs — using plain <label> elements does not connect to the React Aria component’s internal ID system.

  3. Not testing keyboard navigation. Claude verifies visual appearance but skips keyboard testing. React Aria components support Tab, Arrow keys, Enter, Escape, and type-ahead — test all keyboard interactions to ensure the implementation works correctly.