import { BaseFileEngine, FileEngine, FileEngineOutput } from './FileEngine';
import ImportRecord from '../ImportRecord';
export default class ExcelFileEngine extends BaseFileEngine implements FileEngine {
    geSupportedMimeTypes(): string[];
    link(blob: Blob, filename: string): HTMLElement;
    parse(file: File, options: {
        hasHeaders: boolean;
        preview: boolean;
        sheet?: string;
        headerRows?: number;
    }): Promise<FileEngineOutput>;
    /**
     * Parse two-row headers from an Excel sheet.
     * Handles merged cells by remembering the last non-empty value from the first row.
     * Combines first and second row values with '-' separator.
     */
    private parseTwoRowHeaders;
    generate(records: ImportRecord[], options: {
        withErrors?: boolean;
        withRejectionReason?: boolean;
    }): Blob;
}