we have a project, which is angular 7.2.1 with asp.net core 2.2 ,currently it is customized project structure angular webpage with asp.net webpage. and using systemjs connect angular webpage into asp.net web page.
when we upgrade we found as it is a customized angular mix asp.net core project. so can not use angular tool or asp.net tool to upgrade.
and after we upgrade we found a issue as angular 7.2.1 is the last version support systemjs, from angular 8 ,angular do not support systemjs anymore. and use angular cli to manage the package.
as many package like @angular/material, ngx-bootstrap latest version all do not support systemjs anymore. so after upgrade project could not load properly.
my question is what is the best way to fix this. All I can think is move this project's file to new standard angular asp.net web project.
but move project to new standard angular asp.net web project need time consuming, and it is done by previous programmer which has left company.
