import Excel from "https://cdn.jsdelivr.net/npm/exceljs/+esm";
export declare class Workbook {
    private readonly _;
    readonly sheetNames: string[];
    constructor(workbook: Excel.Workbook);
    static load(buffer: ArrayBuffer): Promise<Workbook>;
    sheet(name: string | number, options?: ExtractOptions): any[] & {
        columns: any[];
    };
}
export interface ExtractOptions {
    range?: string;
    headers?: boolean;
}