Cannot use streaming with angular8,

When I use angular8 , I have test
"import * as Excel from 'exceljs/dist/exceljs.min.js';"
and get response
sviz.error.handler.ts:68 TypeError: Cannot read property 'xlsx' of undefined;
I tried to use
"import Excel from 'exceljs/modern.browser';"
with errors :
ERROR in ./node_modules/exceljs/dist/es5/csv/csv.js
Module not found: Error: Can't resolve 'fs' in 'C:\Users\P092785\SVIZ\sviz-stack\app\sviz\node_modules\exceljs\dist\es5\csv'
...
failed to compile

Anybody can help me?