/**
 * Error Handling Utilities
 *
 * Custom error types and formatting for consistent error handling
 */
/**
 * GraphQL error detail structure
 */
type GraphQLErrorDetail = {
    message: string;
    locations?: Array<{
        line: number;
        column: number;
    }>;
    path?: Array<string | number>;
    extensions?: Record<string, unknown>;
};
/**
 * GraphQL-specific error with response details
 */
export declare class GraphQLError extends Error {
    errors: GraphQLErrorDetail[];
    constructor(message: string, errors: GraphQLErrorDetail[]);
}
/**
 * Input validation error
 */
export declare class ValidationError extends Error {
    constructor(message: string);
}
/**
 * Cache operation error
 */
export declare class CacheError extends Error {
    constructor(message: string);
}
/**
 * Network/connection error
 */
export declare class NetworkError extends Error {
    constructor(message: string);
}
/**
 * Format error for user-facing display
 */
export declare function formatError(error: unknown): string;
/**
 * MCP error response type
 */
type MCPErrorResponse = {
    content: Array<{
        type: 'text';
        text: string;
    }>;
    isError: true;
};
/**
 * Standard error response for MCP tools
 */
export declare function errorResponse(error: unknown): MCPErrorResponse;
/**
 * Log error to stderr (Claude Code captures this)
 */
export declare function logError(error: unknown, context?: string): void;
export {};
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