/// <reference types="node" />
import * as ExcelJS from 'exceljs';
import { ExcelOptionConvert } from './types';
export declare class ExcelProvider {
    /**
     *
     * @param headers
     * @param data
     * @returns
     */
    generate(headers: Array<Partial<ExcelJS.Column>>, data: any[]): Promise<Buffer>;
    /**
     *
     * @deprecated
     * @param filePath
     * @returns
     */
    sheetToJson<T>(filePath: string | Buffer): T[];
    /**
     *
     * @param path
     * @param options
     * @returns
     */
    convertToJson<T>(filePath: string | Buffer, options?: ExcelOptionConvert): T[];
    /**
     *
     * @param columnNumber
     * @returns
     */
    getCellTitle(columnNumber: number): string;
    /**
     *
     * @param columnTitle
     * @returns
     */
    getCellNumber(columnTitle: string): number;
    /**
     *
     * @param value
     * @returns
     */
    private _toCellColumn;
    /**
     *
     * @param value
     * @returns
     */
    private _fromCellColumn;
    /**
     *
     * @param cell
     * @returns
     */
    mappingCell(cell?: string | number): string[];
}
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