import { ILogHandler, LogLevel, LogMetadata, LogEntry, ExportFilters, ExportOptions, ExportResult, BufferStats, ExportFormat } from '../types/index.js';
/**
 * Export log handler with circular buffer and multiple export formats
 */
export declare class ExportLogHandler implements ILogHandler {
    private buffer;
    private maxSize;
    private groupDepth;
    private currentGroup?;
    constructor(maxSize?: number);
    /**
     * Handle incoming log and store in buffer
     */
    handle(level: LogLevel, message: string, args: any[], metadata: LogMetadata): void;
    /**
     * Set group tracking for nested logs
     */
    setGroupInfo(depth: number, groupName?: string): void;
    /**
     * Get buffer statistics
     */
    getBufferStats(): BufferStats;
    /**
     * Clear the buffer
     */
    clearBuffer(): void;
    /**
     * Set buffer size (with limits)
     */
    setBufferSize(size: number): void;
    /**
     * Filter logs based on criteria
     */
    private filterLogs;
    /**
     * Export logs in JSON format
     */
    private exportJSON;
    /**
     * Export logs in CSV format
     */
    private exportCSV;
    /**
     * Export logs in Markdown format
     */
    private exportMarkdown;
    /**
     * Export logs in plain text format
     */
    private exportPlain;
    /**
     * Export logs in HTML format
     */
    private exportHTML;
    /**
     * Get emoji for log level
     */
    private getLevelEmoji;
    /**
     * Main export function
     */
    export(format: ExportFormat, filters?: ExportFilters, options?: ExportOptions): ExportResult;
    /**
     * Copy to clipboard with fallback
     */
    copyToClipboard(format: ExportFormat, filters?: ExportFilters, options?: ExportOptions): Promise<boolean>;
    /**
     * Get all logs (for debugging)
     */
    getAllLogs(): LogEntry[];
    /**
     * Save export to file with download prompt
     */
    saveToFile(format: ExportFormat, filters?: ExportFilters, options?: ExportOptions): Promise<boolean>;
    /**
     * Get MIME type for format
     */
    private getMimeType;
    /**
     * Generate filename with timestamp
     */
    private generateFilename;
    /**
     * Stream logs to external endpoint
     */
    streamToEndpoint(endpoint: string, filters?: ExportFilters, options?: {
        apiKey?: string;
        batchSize?: number;
        format?: ExportFormat;
    }): Promise<boolean>;
    /**
     * Create export with metadata enrichment
     */
    exportWithMetadata(format: ExportFormat, filters?: ExportFilters, options?: ExportOptions): ExportResult;
    /**
     * Estimate memory usage of buffer
     */
    private estimateMemoryUsage;
}
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