import ExcelJS = require('exceljs');
import { BulkUploadSheetDto } from '../dtos/bulk.upload.sheet.dto';
import { ScoreableColumn, ScoreableType } from './score.bulk.upload.columns';
export type HeaderSourceType = ScoreableType & {
    sheet?: BulkUploadSheetDto;
};
export declare class ExtractBulkUploadHeaders {
    static headerDictionary(type: {
        columns?: ScoreableColumn[];
    }): Record<string, string>;
    static fromCsv(buffer: Buffer, type: HeaderSourceType): string[];
    static fromWorkbook(workbook: ExcelJS.Workbook, type: HeaderSourceType): Promise<string[]>;
    private static parseHeaderLine;
    private static sheetToCsv;
    private static resolveSheetNames;
}