I am trying to access custom cellRendererParams inside the CustomCellRenderer Class

Question

I am trying to use Ag-Grid for my angular application and create a custom cell renderer. In the implementation that I have followed, it uses ICellRendererParams for the type of params being passed to the init event.

agInit(params: ICellRendererParams): void {
    this.params = params;
    this.type = this.params.type || null;
  }

But now when I try to access custom prop from that params the lint gives the error Property 'type' does not exist on type 'ICellRendererParams'.. Which works perfectly fine when I change the type to any. I have tried creating a custom model class inheriting from ICellRendererParams and adding a property type in it and using that class instead of ICellRendererParams. I wanted to ask if this is the right approach or is there any other cleaner approach to access a property from the interface.

Answer 1

Late answer, but this is the proper way to do it.

type ICellRendererParamsWithGridType = ICellRendererParams & { type: string;};

@Component({
  selector: 'cc-course-timing-grid-cell',
  templateUrl: './course-timing-grid-cell.component.html',
  styleUrls: ['./course-timing-grid-cell.component.scss'],
})
export class CourseTimingGridCellComponent {
  gridType!: string;
  getEntitiesToolTip
  constructor() {}
//...
}

Here we are using Intersection Types. The above code is the short-hand for,

interface CustomParamsType{
  type: string;
}
type ICellRendererParamsWithGridType = ICellRendererParams & CustomParamsType;