How to inject service into class (not component)

Question

I want to inject a service into a class that is not a component.

For example:

Myservice

import {Injectable} from \'         


        

Answer 1

If your service methods are pure functions, a clean way to solve this is to have static members in your service.

your service

import {Injectable} from '@angular/core';
@Injectable()
export class myService{
  public static dosomething(){
    //implementation => doesn't use `this`
  }
}

your class

export class MyClass{
  test(){
     MyService.dosomething(); //no need to inject in constructor
  }
}