from typing import Dict, Any


def normalize_response(provider: str, response: Dict[str, Any]) -> Dict[str, Any]:
    normalized = response.copy()
    
    # Ensure consistent field names
    if "result" in normalized and normalized["result"] is None:
        # Some providers return null, others omit the field
        pass
    
    # Handle null vs missing fields consistently
    if "error" in normalized and normalized["error"] is None:
        del normalized["error"]
    
    return normalized


def normalize_error(error: Exception, error_id: str) -> Dict[str, Any]:
    return {
        "jsonrpc": "2.0",
        "id": 1,
        "error": {
            "code": -32603,
            "message": str(error),
            "data": {"error_id": error_id}
        }
    }