Angular 4 in JS Fiddle - Cannot resolve dependecy

Question

I made a JSFiddle example for Angular 4 app and when I try to inject ChangeDetectorRef in Child component:

public constructor(
    private _changeDetectorRef: ChangeDetectorRef) {}

I get error:

Error: Can't resolve all parameters for ChildComponent: (?).

I can't inject any service from "@angular/core".

When I delete constructor or ChangeDetectorRef injection everything works fine.

How can I inject ChangeDetectorRef in my component?

Thanks

Answer 1

That's a problem with JSFiddle itself, in stackblitz it works fine.