That entire example in general reads more like a cautionary tale about coding yourself into overly-specific clunk in the service of staying 'vanilla'. The 'type' of things being sorted is hardcoded into the html of the table and the actual js code. The comparator function has specific logic just to handle ascending and descending sorts of that that particular table. This one 'simple' example is already more convoluted and brittle than it would be even if you 'reinvented' your own framework-like thing.
