My application can not start after integrated exceljs. I use angular 7. I checked on node_modules/exceljs/index.d.ts but there are not error. I tried to run example with angular 6 then it work. Please let me know how to implement exceljs in angular 7. Advanced thanks!

I use:
"exceljs": "^2.0.1",
"file-saver": "^2.0.2",

"@angular/cli": "^7.3.0",
"@types/node": "^12.7.5",