minor cosmetic changes made

3 jobs for master in 2 minutes and 42 seconds (queued for 4 seconds)
Name Stage Failure
failed
build Build

2 import { Cell, Workbook } from 'exceljs';
~~~~~~~~~
src/app/common/excel.service.ts:3:21 - error TS2307: Cannot find module 'file-saver'.

3 import * as fs from 'file-saver';
~~~~~~~~~~~~

ERROR: Job failed: exit code 1