What the title says.
Is it possible? . I would like to know as well
Server-side, the main prerequisite would be for Bun to support Fibers (which comes back to Node not even supporting Fibers anymore and a lot of the impetus behind Meteor 3.0 needing to work without fibers).
(It might be possible to run Meteor without fibers already, but I imagine nothing specific to Meteor would work, since Meteor Methods, WebApp, and Collections require it… I think…)