What is the bind function

Question

I am trying to learn angular2 with typescript and there is a code does I do not understand:

export var userServiceInjectables: Array<any> = [
  bind(UserService).toClass(UserService)
];

Could someone please explain me, what does code do?

Answer 1

That's a very old way to define providers and is already removed in RC.6.

The current syntax is:

providers: [UserService]

or the long form

providers: [{provide: UserService, useClass: UserService}]