Angular TypeScript set config block callback

set-config.ts

// Usage: https://stackblitz.com/edit/angular-config-callback
import {Component, OnInit} from '@angular/core';

@Component({
  selector: 'app-projects-something',
  templateUrl: 'app-projects-something.html',
  styleUrls: ['app-projects-something.scss']
})
export class SomethingSomethingComponent implements OnInit {
config: object;
  constructor() {
    this.setConfig(() => {
      // do something once done
    });
  }
                   
  setConfig(callback: any): void {
      this.config = {
        config1: value1,
        config2: value2
      }
    callback();
  });
}