如何摆脱TypeScript中的$ injector类型错误？

Question

I have the following in my AngularJS Code:

this.$injector.get('$state').current.name !== 'login'

However, it throws me an error of:

error TS2339: Property 'current' does not exist on type '{}'.

Do you have any idea how to fix this issue?

---

UPDATE

I've tried this:

export namespace NewInjector extends angular.auto.IInjectorService {
    current: any;
};

without any success.

Answer 1

The value returned by get() method of the $injector is any.. which does not have current property... so we just have to assert the compiler, that we know what will be returned (instead of any )

var state = this.$injector.get('$state') as ng.ui.IStateService;
var isNotLogin = state.current.name !== "login";
...

Another notation

var state = this.$injector.get<ng.ui.IStateService>('$state');

And a quick overview of the IInjectorService

interface IInjectorService {
    ...
    get<T>(name: string, caller?: string): T;
    ...