MathJax.typesetPromise()

[mhchem]

In section http://docs.mathjax.org/en/latest/web/typeset.html#handling-asynchronous-typesetting,
shouln't

promise = promise.then(() => {code(); return MathJax.typesetPromise()})

rather read

promise = promise.then(() => {return MathJax.typesetPromise(code())})

to ensure that only certain DOM parts are re-rendered?

[dpvc]

Yes, you are correct. That should be corrected.