App + embroider doesn't ever finish building on codesandbox?

[NullVoxPopuli]

I have a codesandbox with embroider here: https://codesandbox.io/s/gracious-nightingale-6xsy6?file=/ember-cli-build.js

The upstream of it is here: https://codesandbox.io/s/zen-currying-1ufwr

• demonstrates an issue with ember-auto-import and ember-cli-typescript@alpha

And the upstream of that is here: https://codesandbox.io/s/github/NullVoxPopuli/ember-new-output/tree/stable-ts

• added ember-cli-typescript

And the upstream of that is here: https://codesandbox.io/s/github/NullVoxPopuli/ember-new-output/tree/stable

• ember-cli/ember-new-output with some modifications to work on codesandbox

[NullVoxPopuli]

stackblitz/webcontainer-core#354 will be taken care of soon, so I think we can close this.

Codesandbox's "container" support seems like just a checkbox, and like they don't actually care -- so I'm comfortable dissuading people from using codesandbox for anything needing a node envirnoment.