• import { addItemData } from "@esri/arcgis-rest-portal";
    //
    addItemData({
    id: '3ef',
    data: file,
    authentication
    })
    .then(response)

    Send a file or blob to an item to be stored as the /data resource. See the REST Documentation for more information.

    Parameters

    Returns Promise<IUpdateItemResponse>

    A Promise that will resolve with an object reporting success/failure and echoing the item id.