export interface ArrayFormulaInfo {
    formula: string;
    range: {
        startRow: number;
        endRow: number;
        startCol: number;
        endCol: number;
    };
    masterRow: number;
    masterCol: number;
    formulaId: string;
}
/**
 * ArrayFormulaHandler - Handles array formulas (like TRANSPOSE) for Excel export
 *
 * This class detects array formulas from Univer data and applies them correctly
 * to ExcelJS worksheets using fillFormula method.
 */
export declare class ArrayFormulaHandler {
    private arrayFormulas;
    private processedRanges;
    /**
     * Check if a cell is part of an array formula
     */
    isArrayFormula(cell: any, sheetData: any, rowIndex: number, colIndex: number): boolean;
    /**
     * Get array formula info for a cell
     */
    getArrayFormulaInfo(cell: any, sheetData: any): ArrayFormulaInfo | null;
    /**
     * Apply array formula to ExcelJS worksheet
     * This should be called for the master cell of the array formula
     */
    applyArrayFormula(worksheet: any, arrayFormula: ArrayFormulaInfo, startCellValue: any): boolean;
    /**
     * Check if a range has already been processed
     */
    isRangeProcessed(range: {
        startRow: number;
        endRow: number;
        startCol: number;
        endCol: number;
    }): boolean;
    /**
     * Reset handler for new worksheet
     */
    reset(): void;
    /**
     * Debug: Log current state
     */
    debugState(): void;
    /**
     * Clean formula for Excel compatibility
     */
    private cleanFormula;
    /**
     * Validate range object structure
     */
    private isValidRange;
    /**
     * Validate array formula structure
     */
    private isValidArrayFormula;
    /**
     * Get statistics about processed array formulas
     */
    getStatistics(): {
        totalProcessed: number;
        ranges: string[];
        formulas: string[];
    };
}