Documentation Generator in AI

NAME: Technical Documentation
PURPOSE: Generate complete documentation for code, APIs, or systems
TEMPLATE:
Generate comprehensive documentation for:

[CODE/API/SYSTEM DESCRIPTION]

Include these sections:
1. **Overview**: Brief description and purpose
2. **Installation/Setup**: Step-by-step setup instructions
3. **Usage Examples**: Common use cases with code
4. **API Reference**: Detailed method/endpoint documentation
5. **Configuration**: Available options and defaults
6. **Error Handling**: Common errors and solutions
7. **Best Practices**: Recommendations for production use

Format: [Markdown/JSDoc/Docstring/etc.]
Target Audience: [Developers/End Users/etc.]
EXAMPLE:
Generate comprehensive documentation for:

A React custom hook called useDebounce that delays updating a value until after a specified delay period.

Include these sections:
1. **Overview**: Brief description and purpose
2. **Installation/Setup**: Step-by-step setup instructions
3. **Usage Examples**: Common use cases with code
4. **API Reference**: Detailed method/endpoint documentation
5. **Configuration**: Available options and defaults
6. **Error Handling**: Common errors and solutions
7. **Best Practices**: Recommendations for production use

Format: Markdown with JSDoc
Target Audience: React developers
OUTPUT:
# useDebounce Hook

## Overview

`useDebounce` is a custom React hook that delays updating a value until after a specified delay period has passed since the last change. This is particularly useful for optimizing performance in search inputs, form validations, and API calls.

## Installation/Setup

### Install Dependencies
```bash
npm install react
```

### Add to Your Project
```typescript
// hooks/useDebounce.ts
import { useState, useEffect } from 'react';

/**
 * Debounces a value by the specified delay
 * @param {T} value - The value to debounce
 * @param {number} delay - Delay in milliseconds
 * @returns {T} The debounced value
 */
export function useDebounce<T>(value: T, delay: number = 500): T {
  const [debouncedValue, setDebouncedValue] = useState<T>(value);

  useEffect(() => {
    const handler = setTimeout(() => {
      setDebouncedValue(value);
    }, delay);

    return () => {
      clearTimeout(handler);
    };
  }, [value, delay]);

  return debouncedValue;
}
```

## Usage Examples

### Search Input
```tsx
function SearchComponent() {
  const [searchTerm, setSearchTerm] = useState('');
  const debouncedSearchTerm = useDebounce(searchTerm, 300);

  useEffect(() => {
    if (debouncedSearchTerm) {
      // Perform API call
      searchAPI(debouncedSearchTerm);
    }
  }, [debouncedSearchTerm]);

  return (
    <input
      value={searchTerm}
      onChange={(e) => setSearchTerm(e.target.value)}
      placeholder="Search..."
    />
  );
}
```

### Form Validation
```tsx
function FormComponent() {
  const [email, setEmail] = useState('');
  const debouncedEmail = useDebounce(email, 1000);

  useEffect(() => {
    if (debouncedEmail) {
      validateEmail(debouncedEmail);
    }
  }, [debouncedEmail]);

  return (
    <input
      type="email"
      value={email}
      onChange={(e) => setEmail(e.target.value)}
    />
  );
}
```

## API Reference

### Parameters

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| value | T (generic) | required | The value to debounce |
| delay | number | 500 | Delay in milliseconds before updating |

### Returns

| Type | Description |
|------|-------------|
| T | The debounced value after the delay period |

## Configuration

### Delay Options
- **Immediate (0ms)**: Effectively disables debouncing
- **Fast (100-300ms)**: For responsive search
- **Standard (500ms)**: Default, good for most use cases
- **Slow (1000ms+)**: For expensive operations

## Error Handling

### Common Issues

1. **Memory Leaks**: Always handled internally via cleanup function
2. **Stale Closures**: Dependency array ensures fresh values
3. **Race Conditions**: Latest value always takes precedence

## Best Practices

1. **Choose Appropriate Delays**
   - Search: 200-300ms
   - Validation: 500-1000ms
   - Analytics: 1000-2000ms

2. **Combine with Loading States**
   ```tsx
   const debouncedValue = useDebounce(value, 500);
   const isDebouncing = value !== debouncedValue;
   ```

3. **Cancel on Unmount**
   - Handled automatically by the hook

4. **Optimize Re-renders**
   - Memoize expensive operations that depend on debounced values

5. **Testing**
   ```typescript
   jest.useFakeTimers();
   // Test your component
   jest.advanceTimersByTime(500);
   ```