Support AOT

[maxime1992]

When I try to build the app with AOT, I get this error message :

Am I missing something or is it just not supported yet ?

Error encountered resolving symbol values statically. Calling function 'provideInterceptorService', function calls are not supported. Consider replacing the function or lambda with a reference to an exported function, resolving symbol

[voliva]

Not supported yet, I will look into it

[maxime1992]

I don't have time right now to help, but this link helped me when I was setting up AOT https://github.com/qdouble/angular-webpack2-starter#aot--donts

[maxime1992]

@voliva any news ? :)

[voliva]

It's in my TODO list, hopefully I can work soon on it, but it looks like a hard issue.

Meanwhile, you can use the verbose version of the provider: provideInterceptorService was made so it was easier to provide the service without dealing with underlying dependencies.

Should look something like this

providers: [
  LoadingService, // Declare other providers here, specially the ones that are interceptors
  {
    provide: InterceptorService,
    useFactory: (xhrBackend: XHRBackend, requestOptions: RequestOptions, loadingService:LoadingService) => { // Add it to the factory function
      let service = new InterceptorService(xhrBackend, requestOptions);
      service.addInterceptor(loadingService); // Add your interceptors the pipeline
      service.addInterceptor(new ServerURLInterceptor());
      return service;
    },
    /* IMPORTANT: Add it to the deps array in the same order the useFactory method is declared */
    deps: [XHRBackend, RequestOptions, LoadingService]
  }
]

This workaround should allow AOT. I will try to find a way to make it easier while supporting AOT.

[maxime1992]

Thanks for looking into that !
In the meantime, I'll try your solution.

[jtushar53]

@voliva ,
made some changes to make it work here , i am using ionic 2 rc1,

after googling got this angular/angular#11262 solutions by @vicb this made build without errors.

now the problem is when http.post is made nothing happens and yes i have replaced http with InterceptorService

Update:
After debugging, InterceptorService inside constructer is undefined
constructor(public http: InterceptorService,public logging: Logging)

[voliva]

I've been working all this morning on this issue and... it's hard. For AoT you can't call any function if it's not exported in the module declaration. This means that I can't even use [].push(), limiting so much the scriptability for dealing with an array of interceptors.
I can use these functions in providers, so I considered creating two providers: One that serves the array of interceptors and the InterceptorService, that gets the array of interceptors from the former provider.
But I still have an issue: I have to generate the deps array, and I do that by pushing all the dependencies I need from the Interceptors (basically, those that are Services)

For now I can't think how to get untied by that and come up with a solution. A future solution is when Typescript has something like Macros (there's an issue posted for that), where I can set up that deps array before Angular tries to AoT compile.

I will push my work in a separate branch, just to keep it (feature/easyProvideAoT), but it doesn't work yet.

Remember that using the "verbose" provider is AoT-compatible, I just need to update the docs on how to do that.

[maxime1992]

@voliva thanks for the heads up. I'm using ngrx in my project and there's also a know bug with angular-cli so right now I can't compile with --aot anyway but as soon as they released a patch I'll also give a try to your verbose solution.

[kinglionsoft]

+1