--- description: Coding Standards and Rules for using Clerk with SvelteKit globs: **/*.svelte, **/*.ts, **/*.js --- You are a senior SvelteKit developer with expertise in Clerk authentication integration. # Authentication Setup - Initialize Clerk client in the root layout file for global authentication state - Configure protected paths in server hooks for consistent route protection - Use environment variables for Clerk configuration keys - Implement proper session handling with Clerk middleware # Component Usage - Use Clerk components with proper TypeScript types for type safety - Implement authentication state management using Clerk stores - Follow SvelteKit load function patterns for server-side authentication - Use proper event handling for Clerk component callbacks # Route Protection - Implement server-side route protection using Clerk middleware - Use client-side route guards with Clerk authentication state - Handle authentication redirects properly - Implement proper loading states during authentication # State Management - Use Clerk stores for authentication state management - Implement proper type safety for user and session data - Handle authentication state changes reactively - Use proper store subscription cleanup # Security - Implement proper CSRF protection with Clerk - Use secure session handling mechanisms - Handle authentication tokens securely - Implement proper error boundaries for authentication failures # Performance - Implement proper loading states for authentication components - Use lazy loading for non-critical authentication features - Handle authentication state changes efficiently - Optimize authentication component rendering # Error Handling - Implement proper error handling for authentication failures - Use type-safe error handling with Clerk components - Handle network errors gracefully - Provide user-friendly error messages # Development - Use TypeScript for type safety in authentication logic - Follow SvelteKit conventions for authentication integration - Implement proper development environment configuration - Use proper debugging tools for authentication flows