I think the connector isn't bundled correctly as a UMD bundle and so imports break on Observable. See for example https://observablehq.com/d/bbb2d8f944e64e59 <img width="460" alt="Screen Shot 2020-12-11 at 23 12 20" src="https://user-images.githubusercontent.com/589034/101959793-e3fe9400-3bba-11eb-996d-82e189549cbd.png">