fix(modal): BsModalService cannot instantiate the component from lazy-loaded module.

[zzJinux]

Before opening an issue, please search for duplicates (opened and closed)
https://github.com/valor-software/ngx-bootstrap/issues
There's no need to open an issue here if you want to ask general question, use StackOverflow or Slack instead

Bug description or feature request:

BsModalService internally uses ComponentFactoryResolver, and BsModalService is designed to be provided to the root injector.
For current latest version (5.1.2) of angular, The CFR from the root cannot instantiate the component from lazy-loaded module. (See angular/angular#14324)

BsModalService should be able to handle this situation. By either adding a parameter that accepts CFR or implementing intermediate service which can retrieve proper CFR. (as used in ng-bootstrap)

Plunker/StackBlitz that reproduces the issue:

https://stackblitz.com/edit/ngx-bootstrap-playground-mtwpzg

Versions of ngx-bootstrap, Angular, and Bootstrap:

ngx-bootstrap: 2.0.0-rc.0

Angular: 5.1.2

Bootstrap: n/a

Build system: Angular CLI, System.js, webpack, starter seed:

[zzJinux]

I found that this issue is duplicate of /issues/2356.
Should I close this?

[IlyaSurmay]

Yep, it's a duplicate of #2356