//...
import { 
  MAT_DATE_LOCALE, 
  provideNativeDateAdapter
} from '@angular/material/core';

export const appConfig: ApplicationConfig = {
  providers: [
    provideZoneChangeDetection({ eventCoalescing: true }), 
    provideRouter(routes), 
    provideAnimationsAsync(),

    provideNativeDateAdapter(),
    { provide: MAT_DATE_LOCALE, useValue: 'hu' },

  ]
};