react-component-development

name	react-component-development
description	Guide for creating React components using HeroUI in the DEVS platform. Use this when asked to create new UI components, pages, or modify existing React code. Use when this capability is needed.
metadata	{"author":"codename-co"}

React Component Development for DEVS

When creating React components in the DEVS platform, follow these patterns using HeroUI and project conventions.

Component Structure

Components are organized as:

• src/components/ - Shared/reusable components
• src/pages/ - Route-based page components
• src/features/{feature}/components/ - Feature-specific components

Component Template

import { useState, useCallback } from 'react'
import { Button, Card, CardBody, Spinner } from '@heroui/react'
import { useTranslation } from 'react-i18next'
import { Icon } from '@/components/Icon'

interface MyComponentProps {
  title: string
  onAction?: () => void
  isDisabled?: boolean
  children?: React.ReactNode
}

export function MyComponent({
  title,
  onAction,
  isDisabled = false,
  children,
}: MyComponentProps) {
  const { t } = useTranslation()
  const [isLoading, setIsLoading] = useState(false)

  const handleAction = useCallback(async () => {
    if (!onAction) return
    setIsLoading(true)
    try {
      await onAction()
    } finally {
      setIsLoading(false)
    }
  }, [onAction])

  return (
    <Card>
      <CardBody className="gap-4">
        <h2 className="text-lg font-semibold">{title}</h2>
        {children}
        <Button
          color="primary"
          isDisabled={isDisabled || isLoading}
          isLoading={isLoading}
          onPress={handleAction}
        >
          {t('common.submit')}
        </Button>
      </CardBody>
    </Card>
  )
}

HeroUI Component Usage

Always import from @heroui/react:

import {
  Button,
  Card,
  CardBody,
  CardHeader,
  CardFooter,
  Modal,
  ModalContent,
  ModalHeader,
  ModalBody,
  ModalFooter,
  Input,
  Textarea,
  Select,
  SelectItem,
  Chip,
  Badge,
  Avatar,
  Spinner,
  Progress,
  Tooltip,
  Popover,
  PopoverTrigger,
  PopoverContent,
  Dropdown,
  DropdownTrigger,
  DropdownMenu,
  DropdownItem,
  Table,
  TableHeader,
  TableBody,
  TableColumn,
  TableRow,
  TableCell,
  Tabs,
  Tab,
  Accordion,
  AccordionItem,
  Divider,
  Switch,
  Checkbox,
} from '@heroui/react'

Critical Patterns

1. Internationalization (i18n)

All user-facing strings must be translatable:

import { useTranslation } from 'react-i18next'

function MyComponent() {
  const { t } = useTranslation()

  return <Button>{t('agents.create')}</Button>
}

Use curly apostrophe ' (not ') in translation strings.

2. Path Aliases

Always use @/ prefix for imports:

// ✅ Correct
import { Agent } from '@/types'
import { Icon } from '@/components/Icon'

// ❌ Wrong
import { Agent } from '../../types'

3. Event Handlers

Use HeroUI's onPress instead of onClick for buttons:

// ✅ Correct
<Button onPress={handleClick}>Click me</Button>

// ❌ Avoid for HeroUI buttons
<Button onClick={handleClick}>Click me</Button>

4. Loading States

Use HeroUI's built-in loading props:

<Button isLoading={isLoading} isDisabled={isLoading}>
  Submit
</Button>

<Spinner size="sm" />

5. Icons

Use the project's Icon component with Lucide icons:

import { Icon } from '@/components/Icon'

<Icon name="Plus" size={20} />
<Icon name="Settings" className="text-default-500" />

6. Styling

Use Tailwind CSS classes. Common patterns:

// Flex layouts
<div className="flex items-center gap-2">
<div className="flex flex-col gap-4">

// Spacing
<div className="p-4 m-2">
<div className="px-4 py-2">

// Text styling
<span className="text-sm text-default-500">
<h2 className="text-lg font-semibold">

Store Integration

Use Zustand stores with selectors for performance:

import { useAgentStore } from '@/stores/agentStore'

function AgentList() {
  // ✅ Good - select only what you need
  const agents = useAgentStore((state) => state.agents)
  const isLoading = useAgentStore((state) => state.isLoading)

  // ❌ Bad - subscribes to entire store
  const store = useAgentStore()
}

Modal Pattern

import {
  Modal,
  ModalContent,
  ModalHeader,
  ModalBody,
  ModalFooter,
  Button,
  useDisclosure,
} from '@heroui/react'

function MyModal() {
  const { isOpen, onOpen, onOpenChange } = useDisclosure()

  return (
    <>
      <Button onPress={onOpen}>Open Modal</Button>
      <Modal isOpen={isOpen} onOpenChange={onOpenChange}>
        <ModalContent>
          {(onClose) => (
            <>
              <ModalHeader>Title</ModalHeader>
              <ModalBody>Content</ModalBody>
              <ModalFooter>
                <Button variant="light" onPress={onClose}>
                  Cancel
                </Button>
                <Button color="primary" onPress={onClose}>
                  Confirm
                </Button>
              </ModalFooter>
            </>
          )}
        </ModalContent>
      </Modal>
    </>
  )
}

Testing

Component tests go in src/test/components/:

import { render, screen } from '@testing-library/react'
import { describe, it, expect } from 'vitest'
import { MyComponent } from '@/components/MyComponent'

describe('MyComponent', () => {
  it('renders title correctly', () => {
    render(<MyComponent title="Test Title" />)
    expect(screen.getByText('Test Title')).toBeInTheDocument()
  })
})

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