Setting up codesandbox with @arcgis/core

[SethLutske]

I'm trying to set up a simple template using codesandbox to be able to spin up arcgis js api maps quickly.  I dont like codepen as much as codesandbox.  I'd like to do it with the newer es6 module imports.  I added @Anonymous User/core to the dependencies, and in my js file I have this:

import Map from "@arcgis/core/Map";
import MapView from "@arcgis/core/views/MapView";
import "@arcgis/core/assets/esri/themes/dark/main.css";

const map = new Map({
  basemap: "dark-grey"
});

const view = new MapView({
  map,
  container: "viewDiv",
  zoom: 4,
  center: [15, 65]
});

Unfortunately I'm getting the error:

Cannot read property 'zoomIn' of null

I tried using the `ncp` script under the copy assets section of the docs , but that makes no difference.  If you close the error overlay, you can see that the map container does seem to render, but no map is in there.

Here is the codesandbox in question 

What simple thing am I missing here? 

[ReneRubalcava]

Currently, no. There is no fix.

But, based on this comment here, this will work in an upcoming release of Parcel, so eventually should work in codesandbox down the road.

[PatrickMcKinney99]

I can confirm that by using the @parcel/bundler-experimental and versions of @parcel/core and parcel mentioned on the GitHub issue, I was able to generate a build in parcel.js using ESM modules and JS API.