Dornhoth/singleton.service.ts

## singleton.service.ts
import { Injectable } from '@angular/core';

@Injectable()
export class SingletonService {
  static instances = 0;

  constructor() {
    SingletonService.instances += 1;
  }

  someMethod(): void {
    console.log(`There are ${SingletonService.instances} instances of the service`);
  }
}
	import { Injectable } from '@angular/core';

	@Injectable()
	export class SingletonService {
	static instances = 0;

	constructor() {
	SingletonService.instances += 1;
	}

	someMethod(): void {
	console.log(`There are ${SingletonService.instances} instances of the service`);
	}
	}