import { IFileReader } from "./IFileReader";
export declare class ExcelReader implements IFileReader {
    private file;
    config: {
        sheets: {
            header?: {
                rows: number;
            } | undefined;
            range?: string | undefined;
            columnToKey?: {
                [key: string]: string;
            };
            includeEmptyLines?: boolean | undefined;
            sheetStubs?: boolean | undefined;
            name: string;
        }[];
    };
    constructor(file: IFileReader, config?: {
        sheets: {
            header?: {
                rows: number;
            } | undefined;
            range?: string | undefined;
            columnToKey?: {
                [key: string]: string;
            };
            includeEmptyLines?: boolean | undefined;
            sheetStubs?: boolean | undefined;
            name: string;
        }[];
    });
    read(): Promise<any>;
}