Angular cli 2 Error Can't resolve all parameters for XXXXX by AOT build

Question

            import { Injectable, Inject } from \'@angular/core\';
            import { Subject } from \"rxjs/Subject\";
            import { CompleterData, CompleterItem         


        

Answer 1

You will have to add @Inject so that its dependency can be resolved.

So for custom services inside your service Inject its dependency with @Inject

In your code replace your custom services with

@Inject(ProgramService) private programService: ProgramService, @Inject(CacheService) private cacheService: CacheService,

You can understand it deeply from this blog. https://blog.thoughtram.io/angular/2015/09/17/resolve-service-dependencies-in-angular-2.html