@rdlabo/eslint-plugin-rules

A collection of ESLint rules specifically designed for Angular applications. These rules help maintain code quality and enforce best practices in your Angular projects.

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✨ Features

• 🛡️ Enforces best practices for Angular development
• 🔍 Prevents common anti-patterns
• 🎯 Improves code quality and maintainability

📦 Installation

npm install @rdlabo/eslint-plugin-rules --save-dev

Note: If your project doesn't have angular-eslint packages installed, please install them first: angular-eslint

⚙️ Configuration

Configuration (eslint.config.js)

const rdlabo = require('@rdlabo/eslint-plugin-rules');

module.exports = tseslint.config(
  {
    files: ['**/*.ts'],
    plugins: {
      '@rdlabo/rules': rdlabo,
    },
    rules: {
      '@rdlabo/rules/deny-constructor-di': 'error',
      '@rdlabo/rules/deny-import-from-ionic-module': 'error',
      '@rdlabo/rules/implements-ionic-lifecycle': 'error',
      '@rdlabo/rules/deny-soft-private-modifier': 'error',
      '@rdlabo/rules/signal-use-as-signal': 'error',
      '@rdlabo/rules/signal-use-as-signal-template': 'error',
      '@rdlabo/rules/component-property-use-readonly': 'error',
    },
  },
  {
    files: ['**/*.html'],
    plugins: {
      '@rdlabo/rules': rdlabo,
    },
    rules: {
      '@rdlabo/rules/deny-element': [
        'error',
        {
          elements: ['ion-modal', 'ion-popover', 'ion-toast', 'ion-alert', 'ion-loading', 'ion-picker', 'ion-action-sheet'],
        },
      ],
      '@rdlabo/rules/ionic-attr-type-check': 'error',
    },
  },
);

📋 Available Rules

Rule	Description	Auto-fixable
@rdlabo/rules/deny-constructor-di	Prevents Dependency Injection within constructors	❌
@rdlabo/rules/deny-element	Restricts usage of specific HTML elements	❌
@rdlabo/rules/deny-import-from-ionic-module	Prevents direct imports from @ionic/angular	✅
@rdlabo/rules/implements-ionic-lifecycle	Ensures proper implementation of Ionic lifecycle hooks	✅
@rdlabo/rules/deny-soft-private-modifier	Prevents usage of soft private modifiers	✅
@rdlabo/rules/signal-use-as-signal	Validates proper usage of Angular signals	✅
@rdlabo/rules/signal-use-as-signal-template	Enforces correct usage of Angular Signals in templates	❌
@rdlabo/rules/component-property-use-readonly	Enforces readonly modifier for class properties	✅
@rdlabo/rules/ionic-attr-type-check	Disallows string values for non-string attributes in Ionic components	✅

@rdlabo/rules/import-inject-object is removed. This is because we removed the auto-fixable feature from @rdlabo/rules/deny-constructor-di due to concerns about its compatibility with the new ng generate @angular/core:inject command.

🔧 Recommended Additional Rules

TypeScript Member Accessibility

Control the usage of explicit accessibility modifiers in class members:

"rules": {
  "@typescript-eslint/explicit-member-accessibility": ["error", { "accessibility": "no-public" }],
}

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📝 License

This project is licensed under the MIT License. See the LICENSE file for details.