/**
 * Advanced Agent Parser
 * Parses ReAct-style LLM outputs with memory-efficient processing and robust error handling
 */
import { AgentAction, AgentFinish, AgentParserOptions } from './types.js';
import { BaseAgent } from '../BaseAgent.js';
/**
 * CrewAgentParser class
 * Parses agent outputs in ReAct format with memory efficiency and advanced error handling
 *
 * Optimizations include:
 * - Memory-efficient regex patterns to minimize allocation
 * - Single-pass parsing for most common patterns
 * - Smart JSON parsing with syntax repair capabilities
 * - Incremental text processing to handle large outputs
 */
export declare class CrewAgentParser {
    private static ACTION_PATTERN;
    private static THOUGHT_PATTERN;
    private static MARKDOWN_CODE_BLOCK;
    private agent?;
    private options;
    /**
     * Create a new CrewAgentParser instance
     *
     * @param agent Optional agent instance for error tracking and context
     * @param options Parsing options for customization
     */
    constructor(agent?: BaseAgent, options?: AgentParserOptions);
    /**
     * Static method to parse text into an AgentAction or AgentFinish
     * Allows usage without instantiating the class
     *
     * @param text Text to parse
     * @returns Either an AgentAction or AgentFinish based on parsed content
     * @throws OutputParserException if parsing fails
     */
    static parseText(text: string): AgentAction | AgentFinish;
    /**
     * Parse agent output text into structured formats
     * Handles both action requests and final answers with robust error handling
     *
     * @param text Raw text to parse
     * @returns Either an AgentAction or AgentFinish based on parsed content
     * @throws OutputParserException if parsing fails
     */
    parse(text: string): AgentAction | AgentFinish;
    /**
     * Extract thought content from text
     *
     * @param text Text to extract thought from
     * @returns Extracted thought or empty string if not found
     */
    private extractThought;
    /**
     * Clean action string by removing non-essential formatting characters
     * Memory-efficient implementation that minimizes string operations
     *
     * @param text Action text to clean
     * @returns Cleaned action string
     */
    private cleanAction;
    /**
     * Safely repair malformed JSON without throwing exceptions
     * Uses multiple repair strategies with memory efficiency in mind
     *
     * @param input Potentially malformed JSON string
     * @returns Repaired JSON string or original string if repair fails/unnecessary
     */
    private safeRepairJson;
    /**
     * Standardize quotes in a JSON string (convert single quotes to double quotes)
     * Handles nested quotes and escaped characters
     *
     * @param input JSON string with potentially mixed quotes
     * @returns String with standardized quotes
     */
    private standardizeQuotes;
    /**
     * Repair unbalanced brackets and quotes in JSON
     * Handles various malformed JSON patterns with minimal memory usage
     *
     * @param input Potentially malformed JSON with unbalanced elements
     * @returns Repaired JSON string
     */
    private repairUnbalancedElements;
    /**
     * Remove markdown formatting from text
     * Optimized for common patterns in LLM outputs
     *
     * @param text Text with potential markdown formatting
     * @returns Cleaned text with markdown removed
     */
    private removeMarkdownFormatting;
}
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