Auto-sortability should have been there in HTML's capacity as a document format. All the hooks & interactive elements necessary for custom sorting with little more than a definition for a given column's sort function and some toggles for the various features, should be there now. It's absurd to have to start either by importing a library (which one? Why is this even a choice one must make?) or by leading with "OK, this th cell should have such-and-such onClick handler...."