Create Component Command

When the user invokes /create-component, guide them through creating a new component with all necessary files: component implementation, Storybook story, tests, and optional visual mockup.

Workflow Overview

This command provides an interactive workflow for scaffolding production-ready components:

1. Detect Framework: Auto-detect project framework (React, Vue, Svelte)
2. Gather Requirements: Use AskUserQuestion to collect component details
3. Generate Component: Create component file with TypeScript/proper types
4. Generate Story: Create story file with variants and tests
5. Optional Mockup: Generate visual mockup if OPENROUTER_API_KEY available
6. Summary: Display created files and next steps

Execution Steps

Step 1: Detect Framework and Project Structure

Run framework detection to understand the project setup:

bash ${CLAUDE_PLUGIN_ROOT}/scripts/detect-framework.sh

This provides:

• Framework: react, vue, svelte
• Version: e.g., "18.2.0"
• TypeScript: yes/no
• Component directory: e.g., "src/components"

Step 2: Ask User for Component Details

Use AskUserQuestion to gather component requirements:

AskUserQuestion({
  questions: [
    {
      question: "What type of component are you creating?",
      header: "Component Type",
      multiSelect: false,
      options: [
        {
          label: "Button",
          description: "Interactive button with variants (primary, secondary, etc.)"
        },
        {
          label: "Input",
          description: "Form input with validation and states"
        },
        {
          label: "Card",
          description: "Content container with optional header, footer, image"
        },
        {
          label: "Modal / Dialog",
          description: "Overlay dialog with backdrop and focus management"
        },
        {
          label: "Table / DataGrid",
          description: "Data table with sorting, filtering, pagination"
        },
        {
          label: "Form",
          description: "Form layout with validation and submission"
        },
        {
          label: "Navigation (Menu/Tabs)",
          description: "Navigation component with routing"
        },
        {
          label: "Layout (Container/Grid)",
          description: "Layout component for page structure"
        },
        {
          label: "Custom",
          description: "Generic component (will ask for props)"
        }
      ]
    },
    {
      question: "What should the component be named? (PascalCase, e.g., 'MyButton')",
      header: "Component Name",
      multiSelect: false,
      options: [
        // This will be a text input via "Other" option
        {
          label: "Enter custom name",
          description: "Use PascalCase (e.g., MyButton, UserCard, DataTable)"
        }
      ]
    },
    {
      question: "What level of testing should I include?",
      header: "Testing Level",
      multiSelect: false,
      options: [
        {
          label: "Full Testing (Recommended)",
          description: "Component + Story + Interaction tests + A11y tests"
        },
        {
          label: "Standard Testing",
          description: "Component + Story + Interaction tests"
        },
        {
          label: "Basic",
          description: "Component + Story only"
        },
        {
          label: "Minimal",
          description: "Component only (no story or tests)"
        }
      ]
    },
    {
      question: "Should I generate a visual mockup for design reference?",
      header: "Visual Mockup",
      multiSelect: false,
      options: [
        {
          label: "Yes - Generate AI mockup (Recommended)",
          description: "Creates visual reference using NanoBanana (requires OPENROUTER_API_KEY)"
        },
        {
          label: "No - Skip mockup",
          description: "Generate component files only"
        }
      ]
    }
  ]
})

Step 3: Process User Input

After receiving answers, process and prepare for generation:

import json
import os

# Extract answers
component_type = answers['Component Type']
component_name_raw = answers['Component Name']
testing_level_raw = answers['Testing Level']
generate_mockup_raw = answers['Visual Mockup']

# Clean component name (from "Other" text input)
component_name = component_name_raw.strip()

# Validate component name (PascalCase)
if not component_name[0].isupper():
    component_name = component_name[0].upper() + component_name[1:]

# Map testing level
testing_level_map = {
    "Full Testing (Recommended)": "full",
    "Standard Testing": "standard",
    "Basic": "basic",
    "Minimal": "minimal"
}
testing_level = testing_level_map.get(testing_level_raw, "full")

# Determine if mockup should be generated
generate_mockup = "Yes" in generate_mockup_raw and os.getenv('OPENROUTER_API_KEY')

# Get component template based on type
component_template = get_component_template(component_type, framework)

Step 4: Generate Component File

Invoke the component scaffold script:

python3 ${CLAUDE_PLUGIN_ROOT}/skills/component-scaffold/scripts/create_component.py \
  --name "${COMPONENT_NAME}" \
  --type "${COMPONENT_TYPE}" \
  --framework "${FRAMEWORK}" \
  --typescript \
  --output "${COMPONENT_DIR}/${COMPONENT_NAME}.tsx"

This creates the component file with:

• Proper TypeScript interfaces
• Framework-specific patterns (React hooks, Vue Composition API, Svelte stores)
• Props with sensible defaults based on component type
• Accessibility attributes
• JSDoc comments

Step 5: Generate Story File

Use the existing story generation system:

python3 ${CLAUDE_PLUGIN_ROOT}/skills/story-generation/scripts/generate_story.py \
  "${COMPONENT_DIR}/${COMPONENT_NAME}.tsx" \
  --level "${TESTING_LEVEL}" \
  --output "${COMPONENT_DIR}/${COMPONENT_NAME}.stories.tsx"

Step 6: Generate Visual Mockup (Optional)

If user requested mockup and OPENROUTER_API_KEY is available:

# Build context-aware prompt based on component type and project
mockup_prompt = f"""
Modern {component_type} component for {framework} application.
Component name: {component_name}
Style: Clean, professional, follows design system best practices
Include: {get_type_specific_elements(component_type)}
Color scheme: Modern, accessible (WCAG AA compliant)
Layout: Responsive, mobile-friendly
"""

# Generate mockup
python3 ${CLAUDE_PLUGIN_ROOT}/skills/visual-design/scripts/generate_mockup.py \
  "${mockup_prompt}" \
  --model "google/gemini-3.0-pro-image" \
  --output "${COMPONENT_DIR}/mockups/${COMPONENT_NAME}.png"

Step 7: Display Summary

Show the user what was created:

═══════════════════════════════════════════════
  Component Created: ${COMPONENT_NAME}
═══════════════════════════════════════════════

Type: ${COMPONENT_TYPE}
Framework: ${FRAMEWORK}

Files Created:
  ✓ ${COMPONENT_DIR}/${COMPONENT_NAME}.tsx
  ✓ ${COMPONENT_DIR}/${COMPONENT_NAME}.stories.tsx
  ${MOCKUP_CREATED ? `✓ ${COMPONENT_DIR}/mockups/${COMPONENT_NAME}.png` : ''}

Component Features:
  ✓ TypeScript interfaces with proper types
  ✓ Accessibility attributes (ARIA labels, roles)
  ✓ ${PROPS_COUNT} props with sensible defaults
  ✓ JSDoc documentation
  ${TESTING_LEVEL === 'full' ? '✓ Interaction tests with play functions' : ''}
  ${TESTING_LEVEL === 'full' ? '✓ Accessibility tests with axe-core' : ''}

Next Steps:
  1. Review component: ${COMPONENT_DIR}/${COMPONENT_NAME}.tsx
  2. Customize props and styling as needed
  3. Run Storybook: npm run storybook
  4. View your component in the browser
  ${TESTING_LEVEL !== 'minimal' ? '5. Run tests: npm run test-storybook' : ''}

Component Templates by Type

Button Component Template

Features:

• Variants: primary, secondary, outline, ghost
• Sizes: small, medium, large
• States: disabled, loading
• Icon support
• Click handler

Props Generated:

interface ButtonProps {
  variant?: 'primary' | 'secondary' | 'outline' | 'ghost';
  size?: 'small' | 'medium' | 'large';
  disabled?: boolean;
  loading?: boolean;
  icon?: React.ReactNode;
  iconPosition?: 'left' | 'right';
  onClick?: () => void;
  children: React.ReactNode;
}

Input Component Template

Features:

• Label and placeholder
• Error states and validation
• Helper text
• Required indicator
• Different input types

Props Generated:

interface InputProps {
  label: string;
  type?: 'text' | 'email' | 'password' | 'number';
  placeholder?: string;
  value?: string;
  error?: string;
  helperText?: string;
  required?: boolean;
  disabled?: boolean;
  onChange?: (value: string) => void;
}

Card Component Template

Features:

• Optional header and footer
• Image support
• Variants: elevated, outlined, flat
• Clickable option

Props Generated:

interface CardProps {
  variant?: 'elevated' | 'outlined' | 'flat';
  image?: string;
  imageAlt?: string;
  header?: React.ReactNode;
  footer?: React.ReactNode;
  onClick?: () => void;
  children: React.ReactNode;
}

Modal Component Template

Features:

• Open/close state management
• Focus trap
• Backdrop click to close
• ESC key handling
• Accessibility (aria-modal, role="dialog")

Props Generated:

interface ModalProps {
  isOpen: boolean;
  onClose: () => void;
  title?: string;
  size?: 'small' | 'medium' | 'large' | 'fullscreen';
  closeOnBackdropClick?: boolean;
  closeOnEsc?: boolean;
  children: React.ReactNode;
}

Table Component Template

Features:

• Column definitions
• Sortable columns
• Row selection
• Pagination
• Loading and empty states

Props Generated:

interface TableColumn<T> {
  key: keyof T;
  header: string;
  sortable?: boolean;
  render?: (value: T[keyof T], row: T) => React.ReactNode;
}

interface TableProps<T> {
  data: T[];
  columns: TableColumn<T>[];
  sortable?: boolean;
  selectable?: boolean;
  pagination?: boolean;
  pageSize?: number;
  loading?: boolean;
  emptyMessage?: string;
  onRowClick?: (row: T) => void;
}

Custom Component Template

For "Custom" type, ask follow-up questions:

AskUserQuestion({
  questions: [
    {
      question: "What props does your component need? (comma-separated, e.g., 'title, description, onClick')",
      header: "Component Props",
      multiSelect: false,
      options: [
        {
          label: "Enter prop names",
          description: "List props separated by commas"
        }
      ]
    },
    {
      question: "Should this component accept children?",
      header: "Children Support",
      multiSelect: false,
      options: [
        {
          label: "Yes - Component wraps content",
          description: "Add children prop (React.ReactNode)"
        },
        {
          label: "No - Self-contained component",
          description: "No children prop"
        }
      ]
    }
  ]
})

Framework-Specific Patterns

React Component Template

import React from 'react';
import './{{COMPONENT_NAME}}.css';

export interface {{COMPONENT_NAME}}Props {
  {{PROPS}}
}

/**
 * {{COMPONENT_DESCRIPTION}}
 */
export function {{COMPONENT_NAME}}({
  {{PROP_DESTRUCTURING}}
}: {{COMPONENT_NAME}}Props) {
  {{COMPONENT_LOGIC}}

  return (
    <div className="{{COMPONENT_CLASS}}" {{ATTRIBUTES}}>
      {{COMPONENT_CONTENT}}
    </div>
  );
}

{{COMPONENT_NAME}}.displayName = '{{COMPONENT_NAME}}';

Vue 3 Component Template

<script setup lang="ts">
interface {{COMPONENT_NAME}}Props {
  {{PROPS}}
}

const props = defineProps<{{COMPONENT_NAME}}Props>();
{{COMPONENT_LOGIC}}
</script>

<template>
  <div class="{{COMPONENT_CLASS}}" {{ATTRIBUTES}}>
    {{COMPONENT_CONTENT}}
  </div>
</template>

<style scoped>
.{{COMPONENT_CLASS}} {
  {{BASE_STYLES}}
}
</style>

Svelte Component Template

<script lang="ts">
  export let {{PROPS}};
  {{COMPONENT_LOGIC}}
</script>

<div class="{{COMPONENT_CLASS}}" {{ATTRIBUTES}}>
  {{COMPONENT_CONTENT}}
</div>

<style>
  .{{COMPONENT_CLASS}} {
    {{BASE_STYLES}}
  }
</style>

Component Type Defaults

The script provides sensible defaults based on component type:

Type	Default Props	Variants	Features
Button	variant, size, disabled, loading, onClick, children	4 variants, 3 sizes	Icon support, loading state
Input	label, type, value, error, onChange	4 types	Validation, helper text
Card	variant, image, header, footer, children	3 variants	Clickable, image support
Modal	isOpen, onClose, title, size, children	4 sizes	Focus trap, ESC/backdrop close
Table	data, columns, sortable, pagination	-	Sorting, selection, pagination
Form	onSubmit, loading, error	-	Validation, error handling
Navigation	items, activeItem, onChange	-	Routing support
Layout	children, spacing, direction	-	Flex/Grid layout

Error Handling

Component Already Exists:

⚠ Component already exists: src/components/Button.tsx

Options:
  1. Choose a different name
  2. Overwrite existing (use --force flag)
  3. Cancel operation

Invalid Component Name:

✗ Invalid component name: "my-button"

Component names must:
  • Start with uppercase letter (PascalCase)
  • Contain only letters and numbers
  • Not contain spaces or special characters

Examples: MyButton, UserCard, DataTable

Framework Detection Failed:

✗ Could not detect project framework

Please specify framework manually:
  /create-component --framework react
  /create-component --framework vue
  /create-component --framework svelte

No Component Directory:

⚠ Could not find component directory

Suggested directories:
  • src/components
  • src/lib/components
  • components

Create directory? (y/n)

Advanced Usage

Create Component with Specific Props

# Custom props
/create-component --name MyButton --type button --props "label:string,onClick:function,disabled:boolean"

Create Component in Specific Directory

# Specify output directory
/create-component --name UserCard --type card --output src/features/user/components

Create Multiple Variants

# Generate component with custom variants
/create-component --name StatusBadge --type custom --variants "success,warning,error,info"

Platform-Specific Considerations

Tauri Components

If project uses Tauri, automatically include IPC mocking in stories:

// Auto-generated in story file
export const WithTauriAPI: Story = {
  args: { /* ... */ },
  decorators: [
    (Story) => {
      if (typeof window !== 'undefined') {
        window.__TAURI__ = {
          invoke: async (cmd) => ({ success: true }),
        };
      }
      return <Story />;
    },
  ],
};

Electron Components

If project uses Electron, include IPC mocking:

// Auto-generated in story file
export const WithElectronAPI: Story = {
  args: { /* ... */ },
  decorators: [
    (Story) => {
      if (typeof window !== 'undefined') {
        window.api = {
          // Mock electron API
        };
      }
      return <Story />;
    },
  ],
};

Notes

• Always generate TypeScript components (even for JS projects)
• Include accessibility attributes by default (aria-label, role, etc.)
• Follow framework-specific best practices (React hooks, Vue Composition API)
• Generate CSS module or scoped styles by default
• Include JSDoc comments for props
• Use semantic HTML elements
• Ensure keyboard navigation support
• Include loading and error states where applicable