"use client"; import { GridColDef } from "@mui/x-data-grid-pro"; import { List } from "@/app/_components/List"; export default function Page() { const columns: GridColDef[] = [ { field: "id", headerName: "ID", flex: 1, }, { field: "phoneNumber", headerName: "Phone Number", flex: 2, }, { field: "createdAt", headerName: "Created At", valueGetter: (params: any) => new Date(params.row?.createdAt).toLocaleString(), flex: 1, }, { field: "updatedAt", headerName: "Updated At", valueGetter: (params: any) => new Date(params.row?.updatedAt).toLocaleString(), flex: 1, }, ]; const rows = [ { id: 10, phoneNumber: "1234567890", createdAt: new Date(), updatedAt: new Date(), }, ]; return ( ); }