Function html_constructor

fn html_constructor(
    cx: JSContext,
    global: &GlobalScope,
    call_args: &CallArgs,
    check_type: fn(_: &Element) -> bool,
    proto_id: ID,
    creator: unsafe fn(_: JSContext, _: HandleObject<'_>, _: *mut ProtoOrIfaceArray),
    can_gc: CanGc,
) -> Result<(), ()>

https://html.spec.whatwg.org/multipage/#htmlconstructor