TypeScript Partial

1type ComponentConfig = {
2  optionOne: string;
3  optionTwo: string;
4  optionThree: string;
5}
6export class SomeComponent {
7  private _defaultConfig: Partial<ComponentConfig> = {
8    optionOne: '...'
9  }
10  @Input() config: ComponentConfig;
11  
12  ngOnInit() {
13    const merged = { ...this._defaultConfig, ...this.config };
14  }
15}