davatron5000 / awesome-standalones Goto Github PK

Could you please explain what constitutes an element "that extends or adds to an existing semantic element"? Obviously you are not referring to Customized Built-in Elements, since the elements you list are all expanding the HTMLElement interface. They also do not seem to re-implement some specific interface (the <details-xx> elements have no open attribute, the <file-drop> element would not work as an input element in a form).

To ask a more precise question: if the term "extension" does not refer to class inheritance, is there an unambiguous way to identify which element is expanded, or is it only a matter of an intuitive "it reminds me of" without a technical spec being followed?

I am aware that extending other interfaces but HTMLElement is not supported by Safari, so I am not trying to promote a part of the Standard that seems to be controversial, I am only trying to understand your classification.