Organizing Services for Improved Dependency Injection in Angular

{
  "title": "Organizing Services for Improved Dependency Injection in Angular",
  "description": "Explore best practices for structuring services in Angular to streamline dependency injection and improve code organization.",
  "category": "Angular Cursor Rules",
  "rules": [
    {
      "id": "angular-service-structure",
      "level": "warning",
      "message": "Consider organizing services into feature-specific modules to enhance modularity and maintainability.",
      "pattern": ".*",
      "condition": {
        "type": "file",
        "path": ".*\\.service\\.ts$"
      },
      "fix": {
        "description": "Refactor services into dedicated feature modules to improve code organization and facilitate dependency injection."
      }
    },
    {
      "id": "angular-provided-in-root",
      "level": "info",
      "message": "Use 'providedIn: \"root\"' in service decorators to ensure singleton instances and enable tree-shaking.",
      "pattern": "@Injectable\\(\\{[^}]*\\}\\)",
      "condition": {
        "type": "file",
        "path": ".*\\.service\\.ts$"
      },
      "fix": {
        "description": "Add 'providedIn: \"root\"' to the @Injectable decorator to optimize service instantiation and application performance."
      }
    },
    {
      "id": "angular-avoid-component-providers",
      "level": "warning",
      "message": "Avoid providing services at the component level unless a unique instance is required.",
      "pattern": "providers:\\s*\\[.*\\]",
      "condition": {
        "type": "file",
        "path": ".*\\.component\\.ts$"
      },
      "fix": {
        "description": "Remove the 'providers' array from the component decorator to prevent multiple instances of the service."
      }
    },
    {
      "id": "angular-injectable-decorator",
      "level": "error",
      "message": "Ensure all services are decorated with @Injectable to enable dependency injection.",
      "pattern": "export\\s+class\\s+\\w+Service\\s*\\{",
      "condition": {
        "type": "file",
        "path": ".*\\.service\\.ts$"
      },
      "fix": {
        "description": "Add the @Injectable decorator to the service class to make it available for dependency injection."
      }
    },
    {
      "id": "angular-injection-token",
      "level": "info",
      "message": "Use InjectionToken for non-class dependencies to ensure type safety and uniqueness.",
      "pattern": ".*",
      "condition": {
        "type": "file",
        "path": ".*\\.service\\.ts$"
      },
      "fix": {
        "description": "Define an InjectionToken for the non-class dependency and use it in the service constructor."
      }
    }
  ]
}