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Я получаю ниже ошибку при запуске проекта ionic: я получаю ошибку при создании приложения Ionic 3

 import { Injectable } from '@angular/core';
import * as FileSaver from 'file-saver';
import * as XLSX from 'xlsx';
const EXCEL_TYPE = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8';
const EXCEL_EXTENSION = '.xlsx';
@Injectable()
export class ExcelService {
constructor() { }
public exportAsExcelFile(data: any[], excelFileName: string): void {
  const worksheet = utils.table_to_sheet(data);
  const workbook:XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
  const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });
  this.saveAsExcelFile(excelBuffer, excelFileName);
}
private saveAsExcelFile(buffer: any, fileName: string): void {
   const data: Blob = new Blob([buffer], {type: EXCEL_TYPE});
   FileSaver.saveAs(data, fileName   '_export_'   new  Date().getTime()   EXCEL_EXTENSION);
}
}
 

Получение приведенной ниже ошибки, отображаемой при сборке ionic

 [10:54:44]  typescript: ...MOD/Solitaire App 37/solitaireapp(salseAPP) - 6-0/src/services/excel.service.ts, line: 11
            **Module ''*'' has no exported member 'WorkSheet'.**

      L10:  public exportAsExcelFile(data, excelFileName: string): void {
      L11:    const worksheet:XLSX.WorkSheet= XLSX.utils.table_to_sheet(data.nativeElement);
      L12:    //const worksheet = utils.table_to_sheet(data);

[10:54:44]  typescript: ...MOD/Solitaire App 37/solitaireapp(salseAPP) - 6-0/src/services/excel.service.ts, line: 13
            **Module ''*'' has no exported member 'WorkBook'.**

      L12:  //const worksheet = utils.table_to_sheet(data);
      L13:  const workbook:XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
      L14:  const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });