Create Angular component

Hello,

I followed this article to add Angular component, but failed to build it.

https://academy.creatio.com/documents/technic-sdk/7-16/creating-angular…

My window.ng.core.VERSION.major = 9 (Creation 7.16.3). So I tried @angular/cli@9. But it seems that ngx-build-plus doesn't support Angular 9 yet.

$ yarn build:my-app:externals
Unknown option: '--extra-webpack-config'
Unknown option: 'webpack.externals.js'
Unknown option: '--single-bundle'
error Command failed with exit code 1.

Thanks.