that is related to https://github.com/cazala/synaptic/issues/137, we're using fn.toString() and bunch of regex-es to create a worker for now (I know, it's bad, still we already have a fix, but it is breaking some of our actually-interal, but overly-exposed APIs, so it goes to v2), and we need to either have one version minified by us or it will be minified by CDNs.
Vsevolod Rodionov