Angular 8.2.14 No provider for FaConfig

Describe the problem

I’ve follow the procedure describe on the readme to use font awsome and installed all required packages

"@fortawesome/angular-fontawesome": "^0.6.0-alpha.0",
    "@fortawesome/fontawesome-svg-core": "^1.2.25",
    "@fortawesome/free-brands-svg-icons": "^5.11.2",
    "@fortawesome/free-solid-svg-icons": "^5.11.2",

When I’m using ng serve, everything is working well and my icons are present but as soon as I’m using ng serve --prod I’m getting the following error message

  StaticInjectorError(Platform: core)[angular_fontawesome_FaIconComponent -> FaConfig]: 
    NullInjectorError: No provider for FaConfig!```
<!--- What happened? What are you seeing? How did you arrive here? -->
I just open my browser when everything is compile succeful message from angular 
### What did you expect?
No issue en prod mode for NoProvider for FaConfig

### Reproducible test case
Angular CLI: 8.3.20
Node: 10.16.0
OS: win32 x64
Angular: 8.2.14
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... platform-server, router, service-worker

Package                                    Version
--------------------------------------------------------------------
@angular-devkit/architect                  0.803.20
@angular-devkit/build-angular              0.803.20
@angular-devkit/build-optimizer            0.803.20
@angular-devkit/build-webpack              0.803.20
@angular-devkit/core                            8.3.20
@angular-devkit/schematics                 8.3.20
@angular/cli                                           8.3.20
@ngtools/webpack                                8.3.20
@nguniversal/common                          8.1.1
@nguniversal/express-engine                8.1.1
@nguniversal/module-map-ngfactory-loader   8.1.1
@schematics/angular                        8.3.20
@schematics/update                         0.803.20
rxjs                                            6.5.3
typescript                                 3.5.3
webpack                                    4.39.2

[bgever]

0.5 is working well for me with Angular 8, so I don’t see issues for dropping support in 0.6.

Thanks for looking into the issue! 👍

[devoto13]

@ensnared I think you’re right. Most likely I served the app in development mode and compiled in production mode, but never tried to serve in production mode.

@bgever Thanks for the reproduction! I’ve looked into it and in fact it crashes even with the basic setup described in the README using AoT. I’ve tried to debug it a bit and it seems that library build produced by Angular CLI 9.x does not really work for the Angular 8.x application as nothing really changed in the relevant source code of the angular-fontawesome.

Given that this is a tooling issue, which I don’t think will be fixed by Angular/Angular CLI and the amount of problems people get trying to run 0.6.0-alpha.0 on Angular 8.x I’m going to resolve it by dropping support for Angular 8.x in 0.6.0 release of angular-fontawesome. So use 0.5.0 for Angular 8.x and 0.6.x for Angular 9.x.