/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * Detects if a tool format should use double-escape handling
 * @param toolFormat - The tool format to check
 * @returns true if the format typically needs double-escape handling
 */
export declare function shouldUseDoubleEscapeHandling(toolFormat: string): boolean;
/**
 * Checks if a JSON string appears to be double-stringified
 * @param jsonString - The JSON string to check
 * @returns Object with detection results and corrected value if applicable
 */
export declare function detectDoubleEscaping(jsonString: string): {
    isDoubleEscaped: boolean;
    correctedValue?: unknown;
    originalValue: string;
    detectionDetails: {
        firstParse?: string;
        secondParse?: unknown;
        error?: string;
    };
};
/**
 * Detects double-escaping in streaming tool call chunks
 * @param chunk - The streaming chunk to analyze
 * @returns true if double-escaping patterns are detected
 */
export declare function detectDoubleEscapingInChunk(chunk: string): boolean;
/**
 * Processes tool call parameters, fixing double-escaping if detected
 * @param parametersString - The JSON string containing tool parameters
 * @param toolName - Name of the tool (for logging)
 * @param format - The tool format being used (for context, optional)
 * @returns Processed parameters object
 */
export declare function processToolParameters(parametersString: string, toolName: string, format?: string): unknown;
/**
 * Logs double-escaping detection in streaming chunks (for debugging)
 * @param chunk - The chunk that contains potential double-escaping
 * @param toolName - Name of the tool
 * @param format - The tool format
 */
export declare function logDoubleEscapingInChunk(chunk: string, toolName: string, format: string): void;