Vue Data GridRow Grouping - Displaying Grouped Data

import {
  createApp,
  defineComponent,
  onBeforeMount,
  ref,
  shallowRef,
} from "vue";
import { AgGridVue } from "ag-grid-vue3";
import "./styles.css";
import {
  AutoGroupColumnDef,
  ClientSideRowModelModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  ModuleRegistry,
  RowGroupingDisplayType,
  enableDevValidations,
} from "ag-grid-community";
import { RowGroupingModule } from "ag-grid-enterprise";
import { IOlympicData } from "./interfaces";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([ClientSideRowModelModule, RowGroupingModule]);

const VueExample = defineComponent({
  template: `
        <div style="height: 100%">
                <div class="example-wrapper">
      <div class="example-header">
        <label>
          <span>groupDisplayType:</span>
          <select id="input-display-type" v-on:change="onDisplayTypeChange()">
            <option value="singleColumn">"singleColumn"</option>
            <option value="multipleColumns">"multipleColumns"</option>
            <option value="groupRows">"groupRows"</option>
          </select>
        </label>
      </div>
      <ag-grid-vue
        style="width: 100%; height: 100%;"
        @grid-ready="onGridReady"
        :columnDefs="columnDefs"
        :defaultColDef="defaultColDef"
        :autoGroupColumnDef="autoGroupColumnDef"
        :groupDefaultExpanded="groupDefaultExpanded"
        :rowData="rowData"></ag-grid-vue>
      </div>
        </div>
    `,
  components: {
    "ag-grid-vue": AgGridVue,
  },
  setup(props) {
    const gridApi = shallowRef<GridApi<IOlympicData> | null>(null);
    const columnDefs = ref<ColDef[]>([
      { field: "country", rowGroup: true, hide: true },
      { field: "year", rowGroup: true, hide: true },
      { field: "athlete" },
      { field: "sport" },
      { field: "gold" },
      { field: "silver" },
      { field: "bronze" },
    ]);
    const defaultColDef = ref<ColDef>({
      flex: 1,
      minWidth: 100,
    });
    const autoGroupColumnDef = ref<AutoGroupColumnDef>({
      minWidth: 200,
    });
    const groupDefaultExpanded = ref(1);
    const rowData = ref<IOlympicData[]>(null);

    function onDisplayTypeChange() {
      const displayType = (
        document.querySelector("#input-display-type") as HTMLSelectElement
      ).value as RowGroupingDisplayType;
      gridApi.value!.setGridOption("groupDisplayType", displayType);
    }
    const onGridReady = (params: GridReadyEvent) => {
      gridApi.value = params.api;

      const updateData = (data) => (rowData.value = data);

      fetch("https://www.ag-grid.com/example-assets/olympic-winners.json")
        .then((resp) => resp.json())
        .then((data) => updateData(data));
    };

    return {
      gridApi,
      columnDefs,
      defaultColDef,
      autoGroupColumnDef,
      groupDefaultExpanded,
      rowData,
      onGridReady,
      onDisplayTypeChange,
    };
  },
});

const app = createApp(VueExample);
app.mount("#app");

.example-wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
}

#myGrid {
    flex: 1 1 0px;
    width: 100%;
}

.example-header {
    margin-bottom: 5px;
}