Writing spec algorithms in ES6?

Folks,

Many specs nowadays opt for a more imperative method of expressing
normative requirements, and using algorithms. For example, both HTML and
DOM spec do the "run following steps" list that looks a lot like
pseudocode, and the Web components specs use their own flavor of
prose-pseudo-code.

I wonder if it would be good the pseudo-code would actually be ES6, with
comments where needed?

I noticed that the CSS Color Module Level 4 actually does this, and it
seems pretty nice:
http://dev.w3.org/csswg/css-color/#dom-rgbcolor-rgbcolorcolor

WDYT?

:DG<