Node/UMD bundles are broken on master

[gaearon]

See #13509 (review).
We'll need to remember to fix it one way or the other before cutting a release.

[nhunzaker]

Would this possibly create the following error on the test fixtures?

[nhunzaker]

Reverting 6e4f7c7 definitely fixed it. I'll just roll back to before that commit to triage some DOM stuff.

[bvaughn]

Should b e fixed by #13509

[gaearon]

#13509 should fix this so you can try with it on top.

[bvaughn]

This should now be fixed in master. Try rebasing your branch @nhunzaker

[nhunzaker]

Yep, that did it. Thanks!