{
  "context": "This criteria evaluates how effectively the engineer uses @supabase/supabase-js TypeScript type generation features to create type-safe database operations. It focuses on proper usage of generic types, database schema type definitions, and type inference for queries.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Database type interface",
      "description": "Defines a comprehensive Database interface with the correct structure including public schema, Tables, and the tasks table with Row, Insert, and Update types as specified in the API",
      "max_score": 20
    },
    {
      "name": "Typed client creation",
      "description": "Uses createClient with the Database generic type parameter (SupabaseClient<Database>) to create a type-safe Supabase client in the createTaskClient function",
      "max_score": 15
    },
    {
      "name": "Type-safe select queries",
      "description": "Uses .from('tasks').select() with proper type inference in fetchAllTasks, ensuring the return type matches Database['public']['Tables']['tasks']['Row'][]",
      "max_score": 20
    },
    {
      "name": "Type-safe insert operations",
      "description": "Uses .from('tasks').insert() with the Insert type for input validation in insertTask, accepting Database['public']['Tables']['tasks']['Insert'] as the parameter type",
      "max_score": 15
    },
    {
      "name": "Type-safe update operations",
      "description": "Uses .from('tasks').update().eq() with the Update type in updateTask, accepting Database['public']['Tables']['tasks']['Update'] as the updates parameter type",
      "max_score": 15
    },
    {
      "name": "Custom return types",
      "description": "Uses .select() with specific column selection (e.g., 'id, title') in fetchTaskSummaries and returns a correctly typed result that reflects only the selected columns",
      "max_score": 15
    }
  ]
}