/**
 * @fileoverview Error handlers for specific error types
 * This module provides utilities for handling different types of errors.
 */
import { AxiosError } from 'axios';
import { ErrorCategory } from './categories.js';
import { ClassifiedError } from './types.js';
/**
 * Error classifier for GraphQL errors
 * @param error The error to classify
 * @returns The classified error category
 * @public
 */
export declare function classifyGraphQLError(error: Error): ErrorCategory;
/**
 * Type guard to check if an unknown error is an Error object
 * @param error The error to check
 * @returns True if the error is an Error instance
 * @public
 */
export declare function isError(error: unknown): error is Error;
/**
 * Type guard to check if an error contains a specific message substring
 * @param error The error to check
 * @param substring The substring to search for in the error message
 * @returns True if the error is an Error with the specified substring
 * @public
 */
export declare function isErrorWithMessage(error: unknown, substring: string): error is Error;
/**
 * Checks if an error is an Axios error with specific characteristics
 * @param error The error to check
 * @param statusCode Optional HTTP status code to match
 * @param errorCode Optional Axios error code to match
 * @returns True if the error matches the criteria and is an AxiosError, false otherwise
 * @public
 */
export declare function isAxiosErrorWithCriteria(error: unknown, statusCode?: number, errorCode?: string): error is AxiosError;
/**
 * Extract error messages from GraphQL error response
 * @param errors Array of GraphQL error objects
 * @returns Formatted error message string
 * @public
 */
export declare function extractGraphQLErrorMessages(errors: Array<{
    message: string;
}>): string;
/**
 * Handle GraphQL-specific errors from Axios responses
 * @param error The error to check for GraphQL errors
 * @returns A ClassifiedError if a GraphQL error is found, otherwise null
 * @public
 */
export declare function handleGraphQLSpecificError(error: unknown): ClassifiedError | null;
/**
 * Handle network and connection errors
 * @param error The error to check
 * @returns A ClassifiedError if a network error is found, otherwise null
 * @public
 */
export declare function handleNetworkError(error: unknown): ClassifiedError | null;
/**
 * Handle HTTP status-specific errors
 * @param error The error to check
 * @returns A ClassifiedError if an HTTP status error is found, otherwise null
 * @public
 */
export declare function handleHttpStatusError(error: unknown): ClassifiedError | null;
/**
 * Check if an error is retriable based on its classification
 * @param error The error to check
 * @returns True if the error should be retried
 * @public
 */
export declare function isRetriableError(error: unknown): boolean;
/**
 * Extract Retry-After header from an error response
 * @param error The error to extract from
 * @returns The Retry-After header value or undefined
 * @public
 */
export declare function extractRetryAfterHeader(error: unknown): string | undefined;
/**
 * Main error handler that processes different error types in sequence
 * @param error The error to handle
 * @returns A ClassifiedError appropriate for the error type
 * @public
 */
export declare function handleApiError(error: unknown): ClassifiedError;