import { TableMetadata } from '../types';
/**
 * Table data structure definitions
 */
export interface TableCellData {
    value: string | number | boolean | null;
    rawText: string;
    rowspan?: number;
    colspan?: number;
}
export interface TableRowData {
    [key: string]: TableCellData;
}
export interface TableData {
    headers: string[];
    rows: TableRowData[];
    metadata: TableMetadata;
}
/**
 * The TableHandler class processes HTML tables and extracts structured data
 */
export declare class TableHandler {
    /**
     * Extract all tables from a document
     * @param document The document to extract tables from
     * @returns Array of table data
     */
    extractAllTables(document: Document): TableData[];
    /**
     * Check if the document appears to be an economic calendar
     */
    private checkIfEconomicCalendar;
    /**
     * Extract data from a specific table element
     */
    private extractTableData;
    /**
     * Make headers unique by adding a suffix to duplicates
     */
    private makeHeadersUnique;
    /**
     * Create a 2D grid representation of the table to handle rowspan/colspan
     */
    private createTableGrid;
    /**
     * Convert the grid to row objects using headers
     */
    private convertGridToRows;
    /**
     * Helper method to find the maximum number of columns in any row
     */
    private getMaxColumns;
    /**
     * Clean and normalize text from a cell
     */
    private cleanText;
    /**
     * Convert cell value to appropriate type
     */
    private convertCellValue;
    /**
     * Try to find and extract tables from non-standard or pseudo-table structures
     */
    private extractPseudoTables;
    /**
     * Process tables for economic calendar format
     */
    processEconomicCalendarData(tables: TableData[]): any;
    /**
     * Map table headers to standard economic calendar fields
     */
    private mapCalendarHeaders;
    /**
     * Extract a date from a row if present
     */
    private extractDateFromRow;
    /**
     * Check if a string looks like a date
     */
    private isDateString;
    /**
     * Extract event data from a row
     */
    private extractEventData;
    /**
     * Convert table data to a simplified format suitable for JSON export
     */
    simplifyTableData(tableData: TableData): any;
    /**
     * Convert all tables to a simplified format
     */
    simplifyAllTables(tables: TableData[]): any[];
}