Rome JavaScript Toolchain Samples

// Rome Basic Setup and Configuration
// Rome is an all-in-one JavaScript toolchain

// 1. Installation
// npm install --save-dev rome
// Or: yarn add --dev rome
// Or: pnpm add -D rome

// 2. Initialize Rome in your project
// npx rome init

// 3. rome.json - Main Rome Configuration
{
  "$schema": "https://json.schemastore.org/rome",
  "formatter": {
    "enabled": true,
    "formatWithErrors": false,
    "indentStyle": "space",
    "indentSize": 2,
    "lineWidth": 80,
    "lineEnding": "lf",
    "quoteStyle": "single",
    "quoteProperties": "asNeeded",
    "trailingComma": "es5",
    "semicolons": "asNeeded",
    "arrowParentheses": "asNeeded",
    "bracketSpacing": true,
    "bracketSameLine": false,
    "jsxQuoteStyle": "double",
    "quoteProperties": "preserve"
  },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": true
    }
  },
  "javascript": {
    "formatter": {
      "quoteStyle": "single",
      "jsxQuoteStyle": "double",
      "quoteProperties": "asNeeded",
      "trailingComma": "es5",
      "semicolons": "asNeeded",
      "arrowParentheses": "asNeeded",
      "bracketSpacing": true,
      "bracketSameLine": false
    }
  },
  "typescript": {
    "formatter": {
      "quoteStyle": "single",
      "jsxQuoteStyle": "double",
      "quoteProperties": "asNeeded",
      "trailingComma": "es5",
      "semicolons": "asNeeded",
      "arrowParentheses": "asNeeded",
      "bracketSpacing": true,
      "bracketSameLine": false
    }
  },
  "json": {
    "formatter": {
      "indentSize": 2,
      "lineWidth": 80
    }
  },
  "files": {
    "ignore": [
      "node_modules/**",
      "dist/**",
      "build/**",
      "*.min.js",
      "*.min.css"
    ]
  }
}

// 4. package.json Scripts Integration
{
  "name": "my-rome-project",
  "version": "1.0.0",
  "scripts": {
    "lint": "rome check",
    "lint:fix": "rome check --apply",
    "format": "rome format",
    "format:write": "rome format --write",
    "ci": "rome ci",
    "benchmark": "rome ci --max-diagnostics 50"
  },
  "devDependencies": {
    "rome": "^12.1.0"
  }
}

// 5. Example JavaScript File (src/index.js)
import { calculateTotal } from './utils.js';
import './styles.css';

const products = [
  { id: 1, name: 'Laptop', price: 999.99, category: 'electronics' },
  { id: 2, name: 'Mouse', price: 29.99, category: 'electronics' },
  { id: 3, name: 'Keyboard', price: 79.99, category: 'electronics' }
];

function displayProducts() {
  const container = document.getElementById('products');

  if (!container) {
    console.error('Products container not found');
    return;
  }

  const total = calculateTotal(products);

  products.forEach(product => {
    const element = document.createElement('div');
    element.className = 'product-card';
    element.innerHTML = `
      <h3>${product.name}</h3>
      <p>Price: $${product.price.toFixed(2)}</p>
      <p>Category: ${product.category}</p>
    `;
    container.appendChild(element);
  });

  const totalElement = document.createElement('div');
  totalElement.className = 'total';
  totalElement.innerHTML = `Total: $${total.toFixed(2)}`;
  container.appendChild(totalElement);
}

// Initialize the application
document.addEventListener('DOMContentLoaded', displayProducts);

export { displayProducts, products };

// 6. Example TypeScript File (src/types.ts)
export interface Product {
  id: number;
  name: string;
  price: number;
  category: string;
}

export interface CartItem extends Product {
  quantity: number;
}

export interface User {
  id: string;
  name: string;
  email: string;
  preferences: UserPreferences;
}

export interface UserPreferences {
  theme: 'light' | 'dark';
  language: string;
  notifications: boolean;
}

// 7. Example Utility File (src/utils.js)
export function calculateTotal(products) {
  return products.reduce((total, product) => total + product.price, 0);
}

export function formatCurrency(amount, currency = 'USD') {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency
  }).format(amount);
}

export function debounce(func, wait) {
  let timeout;
  return function executedFunction(...args) {
    const later = () => {
      clearTimeout(timeout);
      func(...args);
    };
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
  };
}

// 8. Example CSS File (src/styles.css)
.product-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 16px;
  margin: 16px;
  max-width: 300px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.product-card h3 {
  margin: 0 0 8px 0;
  color: #333;
}

.product-card p {
  margin: 4px 0;
  color: #666;
}

.total {
  font-size: 18px;
  font-weight: bold;
  color: #007bff;
  margin-top: 16px;
  text-align: right;
}

// 9. Rome Ignore File (.romeignore)
# Build outputs
dist/
build/
out/

# Dependencies
node_modules/

# Environment files
.env
.env.local
.env.*.local

# IDE files
.vscode/
.idea/

# OS files
.DS_Store
Thumbs.db

# Logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# Runtime data
pids
*.pid
*.seed
*.pid.lock

# Coverage directory used by tools like istanbul
coverage/

# Temporary folders
tmp/
temp/

// 10. Example Test File (tests/utils.test.js)
import { calculateTotal, formatCurrency, debounce } from '../src/utils.js';

describe('Utils', () => {
  const products = [
    { id: 1, name: 'Laptop', price: 999.99 },
    { id: 2, name: 'Mouse', price: 29.99 }
  ];

  test('calculateTotal should sum product prices correctly', () => {
    const total = calculateTotal(products);
    expect(total).toBe(1029.98);
  });

  test('formatCurrency should format numbers as currency', () => {
    expect(formatCurrency(1234.56)).toBe('$1,234.56');
    expect(formatCurrency(1234.56, 'EUR')).toBe('€1,234.56');
  });

  test('debounce should delay function execution', (done) => {
    let called = false;
    const debouncedFn = debounce(() => {
      called = true;
      done();
    }, 100);

    debouncedFn();
    expect(called).toBe(false);
  });
});

// 11. Project Structure
my-rome-project/
├── src/
│   ├── index.js
│   ├── utils.js
│   ├── types.ts
│   └── styles.css
├── tests/
│   └── utils.test.js
├── public/
│   └── index.html
├── rome.json
├── .romeignore
├── package.json
└── README.md

// 12. Basic HTML File (public/index.html)
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Rome Example Project</title>
    <link rel="stylesheet" href="../src/styles.css">
</head>
<body>
    <div class="container">
        <h1>Product Catalog</h1>
        <div id="products">
            <!-- Products will be inserted here by JavaScript -->
        </div>
    </div>
    <script type="module" src="../src/index.js"></script>
</body>
</html>

// 13. Rome CLI Commands Usage
/*
# Check files for linting and formatting issues
npx rome check

# Auto-fix linting issues
npx rome check --apply

# Format files
npx rome format

# Format and write changes to files
npx rome format --write

# Run CI checks (fails if any issues found)
npx rome ci

# Check specific file or directory
npx rome check src/
npx rome check src/index.js

# Format specific file
npx rome format src/utils.js

# Generate configuration file
npx rome init

# Show Rome version
npx rome --version

# Get help
npx rome --help
npx rome check --help
*/

const exportedUtilityApi = { products, calculateTotal, formatCurrency, debounce };

// Rome Advanced Configuration Examples
// Advanced configuration patterns for complex projects

// 1. Advanced rome.json Configuration
{
  "$schema": "https://json.schemastore.org/rome",
  "organizeImports": {
    "enabled": true
  },
  "formatter": {
    "enabled": true,
    "formatWithErrors": false,
    "indentStyle": "space",
    "indentSize": 2,
    "lineWidth": 100,
    "lineEnding": "lf",
    "quoteStyle": "single",
    "quoteProperties": "asNeeded",
    "trailingComma": "es5",
    "semicolons": "asNeeded",
    "arrowParentheses": "asNeeded",
    "bracketSpacing": true,
    "bracketSameLine": false,
    "jsxQuoteStyle": "double",
    "attributePosition": "auto",
    "htmlWhitespaceSensitivity": "css",
    "vueIndentScriptAndStyle": false,
    "proseWrap": "preserve",
    "ignore": ["src/generated/**", "**/*.min.js"]
  },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": true,
      // Custom rule configurations
      "complexity": {
        "noExtraBooleanCast": "error",
        "noMultipleSpacesInRegularExpressionLiterals": "error",
        "noUselessCatch": "error",
        "noWith": "error"
      },
      "correctness": {
        "noUnusedVariables": "error",
        "noUndeclaredVariables": "error",
        "noUnreachable": "error",
        "noUnreachableSuper": "error",
        "noConstantCondition": "warn"
      },
      "security": {
        "noGlobalEval": "error",
        "noImpliedEval": "error",
        "noNewSymbol": "error"
      },
      "style": {
        "noArguments": "error",
        "noVar": "error",
        "useConst": "error",
        "useShorthandArrayType": "error",
        "useSingleVarDeclarator": "error",
        "noNegationElse": "error",
        "useTemplate": "error",
        "noCommaOperator": "error"
      },
      "suspicious": {
        "noArrayIndexKey": "warn",
        "noAsyncPromiseExecutor": "error",
        "noCatchAssign": "error",
        "noClassAssign": "error",
        "noCompareNegZero": "error",
        "noControlCharactersInRegex": "error",
        "noDebugger": "error",
        "noDuplicateCase": "error",
        "noDuplicateClassMembers": "error",
        "noDuplicateObjectKeys": "error",
        "noDuplicateParameters": "error",
        "noEmptyBlockStatements": "error",
        "noExplicitAny": "warn",
        "noFallthroughSwitchClause": "error",
        "noFunctionAssign": "error",
        "noGlobalObjectCalls": "error",
        "noImportAssign": "error",
        "noMisleadingCharacterClass": "error",
        "noPrototypeBuiltins": "error",
        "noRedeclare": "error",
        "noShadowRestrictedNames": "error",
        "noUnsafeNegation": "error",
        "useGetterReturn": "error",
        "useValidTypeof": "error"
      },
      "nursery": {
        "noDuplicateJsxProps": "error",
        "noExcessiveNestedTestSuites": "warn",
        "noEmptyPattern": "error",
        "noImportAssignment": "error",
        "noStaticOnlyClass": "error",
        "noThisInStatic": "error",
        "noUselessFragments": "error",
        "useAwait": "error",
        "useConsistentArrayType": "error",
        "useDefaultParameterLast": "error",
        "useEarlyReturn": "error",
        "useFlatMap": "error",
        "useForOf": "error",
        "useImportExtensions": "error",
        "useLiteralKeys": "error",
        "useNumericLiterals": "error",
        "useOptionalChain": "error",
        "useRegexLiterals": "error",
        "useShorthandAssign": "error",
        "useSimplifiedLogicExpression": "error",
        "useSortedClasses": "error"
      }
    }
  },
  "javascript": {
    "formatter": {
      "quoteStyle": "single",
      "jsxQuoteStyle": "double",
      "quoteProperties": "asNeeded",
      "trailingComma": "es5",
      "semicolons": "asNeeded",
      "arrowParentheses": "asNeeded",
      "bracketSpacing": true,
      "bracketSameLine": false,
      "attributePosition": "auto"
    },
    "globals": [
      "window",
      "document",
      "console",
      "process",
      "Buffer"
    ]
  },
  "typescript": {
    "formatter": {
      "quoteStyle": "single",
      "jsxQuoteStyle": "double",
      "quoteProperties": "asNeeded",
      "trailingComma": "es5",
      "semicolons": "asNeeded",
      "arrowParentheses": "asNeeded",
      "bracketSpacing": true,
      "bracketSameLine": false
    }
  },
  "json": {
    "formatter": {
      "indentSize": 2,
      "lineWidth": 100,
      "trailingComma": "none"
    },
    "parser": {
      "allowComments": true,
      "allowTrailingCommas": true
    }
  },
  "css": {
    "formatter": {
      "enabled": true,
      "indentSize": 2,
      "lineWidth": 80
    }
  },
  "files": {
    "include": ["src/**/*", "tests/**/*"],
    "exclude": [
      "node_modules/**",
      "dist/**",
      "build/**",
      "coverage/**",
      "*.min.js",
      "*.min.css",
      "src/generated/**",
      "**/*.d.ts"
    ],
    "ignore": [
      "vendor/**",
      "third-party/**",
      "**/*.bundle.js"
    ]
  }
}

// 2. Workspace Configuration for Monorepos
// rome.json (Root)
{
  "$schema": "https://json.schemastore.org/rome",
  "workspace": {
    "enabled": true
  },
  "files": {
    "ignore": [
      "node_modules/**",
      "dist/**",
      "build/**",
      "*.d.ts"
    ]
  }
}

// packages/frontend/rome.json
{
  "$schema": "https://json.schemastore.org/rome",
  "extends": "../rome.json",
  "linter": {
    "rules": {
      "style": {
        "noVar": "off"
      }
    }
  },
  "javascript": {
    "globals": [
      "window",
      "document",
      "console"
    ]
  }
}

// packages/backend/rome.json
{
  "$schema": "https://json.schemastore.org/rome",
  "extends": "../rome.json",
  "linter": {
    "rules": {
      "suspicious": {
        "noConsoleLog": "error"
      }
    }
  },
  "javascript": {
    "globals": [
      "process",
      "Buffer",
      "console",
      "global"
    ]
  }
}

// 3. Environment-Specific Configurations
// rome.production.json
{
  "linter": {
    "rules": {
      "suspicious": {
        "noConsoleLog": "error",
        "noDebugger": "error"
      },
      "correctness": {
        "noUnusedVariables": "error"
      }
    }
  }
}

// rome.development.json
{
  "linter": {
    "rules": {
      "suspicious": {
        "noConsoleLog": "off",
        "noDebugger": "off"
      },
      "correctness": {
        "noUnusedVariables": "warn"
      }
    }
  },
  "formatter": {
    "lineWidth": 120
  }
}

// 4. Custom Rule Presets
// rome.rules.preset.js
const romeRulesPreset = {
  linter: {
    rules: {
      // Custom strict preset
      complexity: {
        noExtraBooleanCast: "error",
        noMultipleSpacesInRegularExpressionLiterals: "error",
        noUselessCatch: "error"
      },
      style: {
        noVar: "error",
        useConst: "error",
        useShorthandArrayType: "error"
      },
      security: {
        noGlobalEval: "error",
        noImpliedEval: "error"
      }
    }
  }
}

// 5. Performance-Optimized Configuration
{
  "$schema": "https://json.schemastore.org/rome",
  "formatter": {
    "enabled": true,
    "formatWithErrors": false,
    "indentSize": 2,
    "lineWidth": 100
  },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": false, // Disable recommended rules for performance
      "correctness": {
        "noUnusedVariables": "error",
        "noUndeclaredVariables": "error"
      },
      "style": {
        "useConst": "error",
        "noVar": "error"
      }
    }
  },
  "files": {
    "maxSize": 1000000, // 1MB file size limit
    "ignoreUnknown": true, // Ignore unknown file types for performance
    "ignore": [
      "node_modules/**",
      "dist/**",
      "build/**",
      "*.min.js",
      "large-files/**"
    ]
  }
}

// 6. Language-Specific Overrides
{
  "linter": {
    "rules": {
      "style": {
        "noVar": "error"
      }
    }
  },
  "javascript": {
    "linter": {
      "rules": {
        "style": {
          "noVar": "off" // Allow var in legacy JavaScript files
        }
      }
    }
  },
  "typescript": {
    "linter": {
      "rules": {
        "style": {
          "noVar": "error", // Enforce no var in TypeScript
          "useConst": "error"
        },
        "suspicious": {
          "noExplicitAny": "warn" // Warn about any types
        }
      }
    }
  },
  "json": {
    "linter": {
      "rules": {
        "correctness": {
          "noDuplicateKeys": "error"
        }
      }
    }
  },
  "css": {
    "linter": {
      "rules": {
        "nursery": {
          "useValidCssValues": "error"
        }
      }
    }
  }
}

// 7. File-Specific Configuration
{
  "files": {
    "include": ["**/*.js", "**/*.ts", "**/*.jsx", "**/*.tsx"]
  },
  "overrides": [
    {
      "include": ["**/*.test.js", "**/*.test.ts", "**/*.spec.js", "**/*.spec.ts"],
      "linter": {
        "rules": {
          "suspicious": {
            "noExplicitAny": "off" // Allow any in tests
          },
          "style": {
            "useConst": "off" // Allow let in tests for reassignments
          }
        }
      }
    },
    {
      "include": ["**/*.config.js", "**/*.config.ts"],
      "linter": {
        "rules": {
          "suspicious": {
            "noGlobalEval": "off" // Allow eval in config files
          }
        }
      }
    },
    {
      "include": ["**/stories/**/*"],
      "linter": {
        "rules": {
          "suspicious": {
            "noConsoleLog": "off" // Allow console.log in stories
          }
        }
      }
    },
    {
      "include": ["**/vendor/**/*"],
      "linter": {
        "enabled": false // Disable linting for vendor files
      }
    }
  ]
}

// 8. Integration with CI/CD
// .github/workflows/rome.yml
name: Rome CI

on: [push, pull_request]

jobs:
  rome:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run Rome check
        run: npx rome ci

      - name: Format check
        run: npx rome ci --max-diagnostics 50

// 9. Pre-commit Hooks with Husky
// package.json
{
  "scripts": {
    "lint": "rome check",
    "lint:fix": "rome check --apply",
    "format": "rome format",
    "format:write": "rome format --write",
    "prepare": "husky install"
  },
  "devDependencies": {
    "rome": "^12.1.0",
    "husky": "^8.0.3",
    "lint-staged": "^13.2.0"
  },
  "lint-staged": {
    "*.{js,jsx,ts,tsx,json,css}": [
      "rome check --apply",
      "rome format --write"
    ]
  }
}

// .husky/pre-commit
#!/usr/bin/env sh
. "$(dirname -- "$0")/_/husky.sh"

npx lint-staged

// 10. Custom Rome Scripts
// scripts/rome-ci.js
const { execSync } = require('child_process');
const path = require('path');

function runRomeCI() {
  try {
    console.log('🔍 Running Rome CI checks...');

    // Check for linting issues
    execSync('npx rome check', { stdio: 'inherit' });

    // Check formatting
    execSync('npx rome format --write', { stdio: 'inherit' });

    // Run Rome CI command (fails if issues found)
    execSync('npx rome ci', { stdio: 'inherit' });

    console.log('✅ All Rome checks passed!');
  } catch (error) {
    console.error('❌ Rome CI checks failed');
    process.exit(1);
  }
}

if (require.main === module) {
  runRomeCI();
}

module.exports = { runRomeCI };

// 11. Performance Monitoring
// scripts/rome-performance.js
const { performance } = require('perf_hooks');
const { execSync } = require('child_process');

function measureRomePerformance() {
  console.log('📊 Measuring Rome performance...');

  const files = ['src/**/*.js', 'src/**/*.ts'];

  // Measure formatting performance
  const formatStart = performance.now();
  execSync(`npx rome format ${files.join(' ')}`, { stdio: 'pipe' });
  const formatEnd = performance.now();

  // Measure linting performance
  const lintStart = performance.now();
  execSync(`npx rome check ${files.join(' ')}`, { stdio: 'pipe' });
  const lintEnd = performance.now();

  const formatTime = formatEnd - formatStart;
  const lintTime = lintEnd - lintStart;

  console.log(`📈 Performance Results:`);
  console.log(`   Formatting: ${formatTime.toFixed(2)}ms`);
  console.log(`   Linting: ${lintTime.toFixed(2)}ms`);
  console.log(`   Total: ${(formatTime + lintTime).toFixed(2)}ms`);

  return {
    formatTime,
    lintTime,
    totalTime: formatTime + lintTime
  };
}

if (require.main === module) {
  measureRomePerformance();
}

module.exports = { measureRomePerformance };

// Rome Integration Patterns with Development Tools
// Comprehensive integration examples for modern development workflows

// 1. VS Code Integration
// .vscode/settings.json
{
  "editor.defaultFormatter": "rome.rome",
  "editor.formatOnSave": true,
  "editor.codeActionsOnSave": {
    "source.fixAll.rome": true
  },
  "editor.inlayHints.enabled": true,
  "typescript.preferences.importModuleSpecifier": "relative",
  "javascript.suggest.autoImports": true,
  "typescript.suggest.autoImports": true,
  "emmet.includeLanguages": {
    "javascript": "javascriptreact",
    "typescript": "typescriptreact"
  },
  "[javascript]": {
    "editor.defaultFormatter": "rome.rome"
  },
  "[typescript]": {
    "editor.defaultFormatter": "rome.rome"
  },
  "[javascriptreact]": {
    "editor.defaultFormatter": "rome.rome"
  },
  "[typescriptreact]": {
    "editor.defaultFormatter": "rome.rome"
  },
  "[json]": {
    "editor.defaultFormatter": "rome.rome"
  },
  "[css]": {
    "editor.defaultFormatter": "rome.rome"
  }
}

// .vscode/extensions.json
{
  "recommendations": [
    "rome.rome",
    "bradlc.vscode-tailwindcss",
    "esbenp.prettier-vscode",
    "dbaeumer.vscode-eslint",
    "ms-vscode.vscode-typescript-next",
    "formulahendry.auto-rename-tag",
    "christian-kohler.path-intellisense",
    "ms-vscode.vscode-json"
  ]
}

// .vscode/tasks.json
{
  "version": "2.0.0",
  "tasks": [
    {
      "label": "Rome: Check",
      "type": "shell",
      "command": "npx",
      "args": ["rome", "check"],
      "group": "build",
      "presentation": {
        "echo": true,
        "reveal": "always",
        "focus": false,
        "panel": "shared"
      }
    },
    {
      "label": "Rome: Format",
      "type": "shell",
      "command": "npx",
      "args": ["rome", "format", "--write"],
      "group": "build",
      "presentation": {
        "echo": true,
        "reveal": "always",
        "focus": false,
        "panel": "shared"
      }
    },
    {
      "label": "Rome: CI",
      "type": "shell",
      "command": "npx",
      "args": ["rome", "ci"],
      "group": "test",
      "presentation": {
        "echo": true,
        "reveal": "always",
        "focus": false,
        "panel": "shared"
      }
    }
  ]
}

// 2. Webpack Integration
// webpack.config.js
const { execSync } = require('child_process');

module.exports = (env, argv) => {
  const isDevelopment = !argv.mode || argv.mode === 'development';

  // Run Rome on watch mode in development
  if (isDevelopment && env.watch !== false) {
    console.log('🔍 Running Rome in watch mode...');

    // Run Rome check in background
    const romeProcess = require('child_process').spawn('npx', ['rome', 'check', '--watch'], {
      stdio: 'inherit',
      detached: true
    });

    romeProcess.unref();
  }

  return {
    entry: './src/index.js',
    output: {
      filename: 'bundle.js',
      path: path.resolve(__dirname, 'dist'),
      clean: true
    },
    module: {
      rules: [
        {
          test: /\\.[jt]sx?$/,
          exclude: /node_modules/,
          use: {
            loader: 'builtin:swc-loader',
            options: {
              jsc: {
                parser: {
                  syntax: 'typescript',
                  tsx: true,
                  decorators: true
                },
                transform: {
                  react: {
                    runtime: 'automatic'
                  }
                },
                target: 'es2020'
              }
            }
          }
        },
        {
          test: /\\.css$/i,
          type: 'asset/resource'
        }
      ]
    },
    resolve: {
      extensions: ['.js', '.jsx', '.ts', '.tsx'],
      alias: {
        '@': path.resolve(__dirname, 'src')
      }
    },
    plugins: [
      {
        apply: (compiler) => {
          if (compiler.hooks) {
            // Run Rome formatter before emitting files
            compiler.hooks.emit.tapAsync('RomeFormatter', async (compilation) => {
              console.log('🎨 Running Rome formatter on output...');

              // You would implement actual Rome API usage here
              // This is a conceptual example
            });
          }
        }
      }
    ],
    devServer: {
      static: {
        directory: path.join(__dirname, 'public')
      },
      port: 3000,
      hot: true,
      client: {
        overlay: true
      }
    },
    mode: argv.mode || 'development',
    devtool: isDevelopment ? 'eval-source-map' : 'source-map'
  };
};

// 3. Vite Integration
// vite.config.js
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import { execSync } from 'child_process';

// Custom Vite plugin for Rome integration
function romePlugin() {
  return {
    name: 'rome-plugin',
    configureServer(server) {
      server.ws.on('rome:check', () => {
        try {
          const result = execSync('npx rome check', { encoding: 'utf8' });
          server.ws.send({
            type: 'rome:result',
            data: { success: true, result }
          });
        } catch (error) {
          server.ws.send({
            type: 'rome:result',
            data: { success: false, error: error.message }
          });
        }
      });

      server.ws.on('rome:format', () => {
        try {
          execSync('npx rome format --write', { encoding: 'utf8' });
          server.ws.send({
            type: 'rome:result',
            data: { success: true, action: 'formatted' }
          });
        } catch (error) {
          server.ws.send({
            type: 'rome:result',
            data: { success: false, error: error.message }
          });
        }
      });
    },
    buildStart() {
      console.log('🔍 Running Rome check before build...');
      try {
        execSync('npx rome check', { stdio: 'inherit' });
      } catch (error) {
        console.error('❌ Rome check failed, aborting build');
        process.exit(1);
      }
    }
  };
}

const viteConfigWithRome = defineConfig({
  plugins: [
    react(),
    romePlugin()
  ],
  build: {
    minify: 'terser',
    sourcemap: true,
    rollupOptions: {
      output: {
        manualChunks: {
          vendor: ['react', 'react-dom'],
          utils: ['lodash', 'axios']
        }
      }
    }
  },
  server: {
    port: 3000,
    open: true
  },
  optimizeDeps: {
    include: ['react', 'react-dom']
  }
});

// 4. Jest Integration
// jest.config.js
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
  moduleNameMapping: {
    '^@/(.*)$': '<rootDir>/src/$1'
  },
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': 'babel-jest'
  },
  collectCoverageFrom: [
    'src/**/*.{js,jsx,ts,tsx}',
    '!src/**/*.d.ts',
    '!src/index.tsx'
  ],
  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80
    }
  },
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.(js|jsx|ts|tsx)',
    '<rootDir>/src/**/*.(test|spec).(js|jsx|ts|tsx)'
  ],
  transformIgnorePatterns: [
    'node_modules/(?!(rome)/)'
  ]
};

// setupTests.ts
import '@testing-library/jest-dom';

// Mock console methods for cleaner test output
global.console = {
  ...console,
  log: jest.fn(),
  debug: jest.fn(),
  info: jest.fn(),
  warn: jest.fn(),
  error: jest.fn()
};

// Custom Jest matcher for Rome compliance
expect.extend({
  toComplyWithRome(received) {
    try {
      require('child_process').execSync(`npx rome check ${received}`, { encoding: 'utf8' });
      return {
        message: () => `expected ${received} not to comply with Rome rules`,
        pass: true
      };
    } catch (error) {
      return {
        message: () => `expected ${received} to comply with Rome rules`,
        pass: false
      };
    }
  }
});

declare global {
  namespace jest {
    interface Matchers<R> {
      toComplyWithRome(): R;
    }
  }
}

// 5. Cypress Integration
// cypress/support/e2e.js
import '@testing-library/cypress/add-commands';

// Rome compliance command
Cypress.Commands.add('checkRomeCompliance', (filePath) => {
  cy.task('checkRome', { filePath }).then((result) => {
    if (!result.success) {
      cy.log('❌ Rome check failed:', result.errors);
    } else {
      cy.log('✅ Rome check passed');
    }
    return result;
  });
});

// cypress/plugins/index.js
module.exports = (on, config) => {
  on('task', {
    checkRome({ filePath }) {
      try {
        const { execSync } = require('child_process');
        const result = execSync(`npx rome check ${filePath}`, { encoding: 'utf8' });
        return { success: true, result };
      } catch (error) {
        return { success: false, error: error.message };
      }
    },
    formatRome({ filePath }) {
      try {
        const { execSync } = require('child_process');
        execSync(`npx rome format --write ${filePath}`, { encoding: 'utf8' });
        return { success: true };
      } catch (error) {
        return { success: false, error: error.message };
      }
    }
  });
};

// 6. Storybook Integration
// .storybook/main.ts
import type { StorybookConfig } from '@storybook/react-vite';

const config: StorybookConfig = {
  stories: ['../src/**/*.stories.@(js|jsx|ts|tsx)'],
  addons: [
    '@storybook/addon-essentials',
    '@storybook/addon-interactions'
  ],
  framework: {
    name: '@storybook/react-vite',
    options: {}
  },
  viteFinal: async (config) => {
    // Add Rome integration
    config.server = {
      ...config.server,
      fs: {
        allow: ['..']
      }
    };

    // Custom plugin for Rome
    config.plugins = config.plugins || [];
    config.plugins.push({
      name: 'rome-storybook',
      configureServer(server) {
        server.ws.on('rome:check', () => {
          try {
            const { execSync } = require('child_process');
            const result = execSync('npx rome check', { encoding: 'utf8' });
            server.ws.send({
              type: 'rome:result',
              data: { success: true, result }
            });
          } catch (error) {
            server.ws.send({
              type: 'rome:result',
              data: { success: false, error: error.message }
            });
          }
        });
      }
    });

    return config;
  }
};

const storybookConfigWithRome = config;

// 7. GitHub Actions Advanced Workflow
// .github/workflows/rome-advanced.yml
name: Rome Advanced CI/CD

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]
  workflow_dispatch:

jobs:
  rome:
    name: Rome Checks
    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [16, 18, 20]

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Cache Rome cache
        uses: actions/cache@v3
        with:
          path: ~/.cache/rome
          key: ${{ runner.os }}-rome-${{ hashFiles('**/rome.json') }}
          restore-keys: |
            ${{ runner.os }}-rome-

      - name: Run Rome check
        run: npx rome ci --max-diagnostics 50

      - name: Check formatting
        run: npx rome format --write

      - name: Upload coverage reports
        uses: codecov/codecov-action@v3
        with:
          files: ./coverage/lcov.info

  rome-performance:
    name: Rome Performance
    runs-on: ubuntu-latest
    needs: rome

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Measure Rome performance
        run: |
          echo "📊 Measuring Rome performance..."
          time npx rome check src/ > /dev/null
          time npx rome format src/ > /dev/null

  rome-benchmarks:
    name: Rome Benchmarks
    runs-on: ubuntu-latest
    needs: rome

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run Rome benchmarks
        run: |
          echo "🏃 Running Rome benchmarks..."
          npx rome ci --max-diagnostics 100 > rome-report.txt
          echo "::set-output name=report::$(cat rome-report.txt)"

      - name: Upload benchmark results
        uses: actions/upload-artifact@v3
        with:
          name: rome-benchmark-report
          path: rome-report.txt

// 8. Development Workflow Integration
// scripts/dev-workflow.js
const { execSync, spawn } = require('child_process');
const chokidar = require('chokidar');
const path = require('path');

class RomeDevWorkflow {
  constructor() {
    this.watcher = null;
    this.romeProcess = null;
  }

  start() {
    console.log('🚀 Starting Rome development workflow...');

    // Initial Rome check
    this.runRomeCheck();

    // Start file watcher
    this.startWatcher();

    // Start Rome daemon
    this.startRomeDaemon();

    console.log('✅ Rome development workflow started');
    console.log('📝 Rome will auto-check and format on file changes');
  }

  runRomeCheck() {
    try {
      console.log('🔍 Running Rome check...');
      execSync('npx rome check', { stdio: 'inherit' });
    } catch (error) {
      console.log('⚠️ Rome check found issues');
    }
  }

  runRomeFormat() {
    try {
      console.log('🎨 Running Rome format...');
      execSync('npx rome format --write', { stdio: 'inherit' });
    } catch (error) {
      console.log('❌ Rome format failed:', error.message);
    }
  }

  startWatcher() {
    const watchPatterns = [
      'src/**/*.{js,jsx,ts,tsx,json,css}',
      'tests/**/*.{js,jsx,ts,tsx}',
      '*.config.{js,ts,json}'
    ];

    this.watcher = chokidar.watch(watchPatterns, {
      ignored: ['node_modules/**', 'dist/**', '.git/**'],
      persistent: true
    });

    // Debounce file changes
    let timeout;

    this.watcher.on('change', (filePath) => {
      console.log(`📝 File changed: ${filePath}`);

      clearTimeout(timeout);
      timeout = setTimeout(() => {
        this.runRomeCheck();
      }, 500);
    });

    this.watcher.on('add', (filePath) => {
      console.log(`➕ File added: ${filePath}`);
      setTimeout(() => {
        this.runRomeFormat();
      }, 100);
    });
  }

  startRomeDaemon() {
    this.romeProcess = spawn('npx', ['rome', 'check', '--watch'], {
      stdio: 'inherit',
      detached: true
    });

    this.romeProcess.unref();
  }

  stop() {
    console.log('🛑 Stopping Rome development workflow...');

    if (this.watcher) {
      this.watcher.close();
    }

    if (this.romeProcess) {
      this.romeProcess.kill();
    }

    console.log('✅ Rome development workflow stopped');
  }
}

// CLI usage
if (require.main === module) {
  const workflow = new RomeDevWorkflow();

  workflow.start();

  // Handle graceful shutdown
  process.on('SIGINT', () => {
    workflow.stop();
    process.exit(0);
  });

  process.on('SIGTERM', () => {
    workflow.stop();
    process.exit(0);
  });
}

module.exports = RomeDevWorkflow;

// 9. Custom Rome Extensions
// rome.plugins/my-plugin.js
const romeCustomPlugin = {
  name: 'my-rome-plugin',
  rules: {
    customRule: {
      level: 'error',
      options: {
        customOption: 'default'
      }
    }
  },
  // Custom formatter
  format: {
    formatWithErrors: false,
    indentSize: 2
  }
};

// 10. Team Collaboration Setup
// rome.team.json
{
  "extends": "./rome.json",
  "linter": {
    "rules": {
      "style": {
        "noVar": "error",
        "useConst": "error"
      }
    }
  },
  "files": {
    "include": ["team/**/*.js", "team/**/*.ts"],
    "ignore": ["team/vendor/**/*"]
  }
}

const exportedRomeDevWorkflow = RomeDevWorkflow;