nx-primeng-sakai-v17/src/app/components/error/error.component.ts

import { Component, OnInit, OnDestroy } from '@angular/core';
import { ConfigService } from '../../service/app.config.service';
import { AppConfig } from '../../api/appconfig';
import { Subscription } from 'rxjs';

@Component({
  selector: 'app-error',
  templateUrl: './error.component.html',
})
export class ErrorComponent implements OnInit, OnDestroy { 

  config: AppConfig;
  subscription: Subscription;

  constructor(public configService: ConfigService){ }

  ngOnInit(): void {
    this.config = this.configService.config;
    this.subscription = this.configService.configUpdate$.subscribe(config => {
      this.config = config;
    });
  }

  ngOnDestroy(): void {
    if(this.subscription){
      this.subscription.unsubscribe();
    }
  }
}