The hosted storybook at doc.wikimedia.org throws a Syntax error.
e.g. (but also happens for other components it seems)
let ResizingTextFieldvue_type_script_lang_ts_ResizingTextField=class ResizingTextField extends vue_esm.default
Do we happen to pack for ES6 there? Happens in the doc build, dumping storybook to disk, which we don't really use in our workflows, I guess.