/**
 * Error Classifier
 * Classifies and analyzes error responses for security testing
 *
 * Extracted from SecurityResponseAnalyzer.ts (Issue #53)
 * Handles: connection error detection, error classification, error info extraction
 */
import { CompatibilityCallToolResult } from "@modelcontextprotocol/sdk/types.js";
/**
 * Error classification types
 */
export type ErrorClassification = "connection" | "server" | "protocol";
/**
 * Extracted error information from response
 */
export interface ErrorInfo {
    code?: string | number;
    message?: string;
}
/**
 * Classifies errors from tool responses and exceptions
 */
export declare class ErrorClassifier {
    /**
     * Check if response indicates connection/server failure
     */
    isConnectionError(response: CompatibilityCallToolResult): boolean;
    /**
     * Check if caught exception indicates connection/server failure
     */
    isConnectionErrorFromException(error: unknown): boolean;
    /**
     * Check if response indicates transient error worth retrying.
     * Transient errors (ECONNREFUSED, ETIMEDOUT, etc.) may resolve on retry.
     * Permanent errors (unknown tool, unauthorized) will not.
     *
     * @see https://github.com/triepod-ai/inspector-assessment/issues/157
     */
    isTransientError(response: CompatibilityCallToolResult): boolean;
    /**
     * Check if caught exception indicates transient error worth retrying.
     *
     * @see https://github.com/triepod-ai/inspector-assessment/issues/157
     */
    isTransientErrorFromException(error: unknown): boolean;
    /**
     * Internal: Check if text indicates connection/server failure
     */
    private isConnectionErrorFromText;
    /**
     * Classify error type for reporting
     */
    classifyError(response: CompatibilityCallToolResult): ErrorClassification;
    /**
     * Classify error type from caught exception
     */
    classifyErrorFromException(error: unknown): ErrorClassification;
    /**
     * Internal: Classify error type from text
     */
    private classifyErrorFromText;
    /**
     * Extract error info from response
     */
    extractErrorInfo(response: CompatibilityCallToolResult): ErrorInfo;
    /**
     * Extract response content from MCP response
     */
    extractResponseContent(response: CompatibilityCallToolResult): string;
}
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