/**
 * Options for Excel data extraction
 */
export interface ExcelExtractOptions {
    /**
     * Specific sheet name to extract (if not provided, all sheets are extracted)
     */
    sheetName?: string;
    /**
     * Sheet index to extract (0-based)
     */
    sheetIndex?: number;
    /**
     * Include empty cells in output
     * @default false
     */
    includeEmptyCells?: boolean;
    /**
     * Format for output
     * @default 'json'
     */
    format?: 'json' | 'csv' | 'html' | 'text';
}
/**
 * Result of Excel data extraction
 */
export interface ExcelExtractResult {
    /**
     * Sheet name
     */
    sheetName: string;
    /**
     * Extracted data (format depends on options)
     */
    data: any;
    /**
     * Number of rows
     */
    rowCount: number;
    /**
     * Number of columns
     */
    columnCount: number;
}
/**
 * Result of Excel metadata extraction
 */
export interface ExcelMetadataResult {
    fileName: string;
    filePath: string;
    fileSize: number;
    lastModified: Date;
    sheetNames: string[];
    sheetCount: number;
    properties?: {
        [key: string]: any;
    };
}
/**
 * Parser for Excel (xlsx/xls) documents
 */
export declare class ExcelParser {
    /**
     * Extract data from an Excel file
     *
     * @param filePath - Absolute path to the Excel file
     * @param options - Extraction options
     * @returns Extracted data from sheet(s)
     *
     * @example
     * ```typescript
     * const parser = new ExcelParser();
     * const results = await parser.extractData('spreadsheet.xlsx');
     * console.log(results[0].data);
     * ```
     */
    extractData(filePath: string, options?: ExcelExtractOptions): Promise<ExcelExtractResult[]>;
    /**
     * Extract text from all sheets
     *
     * @param filePath - Absolute path to the Excel file
     * @returns Concatenated text from all sheets
     */
    extractText(filePath: string): Promise<string>;
    /**
     * Get metadata from an Excel file
     *
     * @param filePath - Absolute path to the Excel file
     * @returns Workbook metadata
     *
     * @example
     * ```typescript
     * const parser = new ExcelParser();
     * const metadata = await parser.getMetadata('spreadsheet.xlsx');
     * console.log(metadata.sheetNames);
     * ```
     */
    getMetadata(filePath: string): Promise<ExcelMetadataResult>;
    /**
     * Search for text in an Excel file
     *
     * @param filePath - Absolute path to the Excel file
     * @param query - Search query
     * @param caseSensitive - Whether the search should be case-sensitive
     * @returns Array of matches with sheet name, cell reference, and value
     */
    searchText(filePath: string, query: string, caseSensitive?: boolean): Promise<Array<{
        sheetName: string;
        cellRef: string;
        value: string;
        row: number;
        col: number;
    }>>;
    /**
     * Get specific sheet names
     *
     * @param filePath - Absolute path to the Excel file
     * @returns Array of sheet names
     */
    getSheetNames(filePath: string): Promise<string[]>;
    /**
     * Extract specific cells by range
     *
     * @param filePath - Absolute path to the Excel file
     * @param sheetName - Sheet name
     * @param range - Cell range (e.g., 'A1:C10')
     * @returns Data from specified range
     */
    extractRange(filePath: string, sheetName: string, range: string): Promise<any[]>;
}
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