If you want to perform high-level operations on these platforms, you probably need to write JS that combines it's lower-level functions and build it up until you have something useful like: md5(), strip_tags(), strtotime(), number_format(), wordwrap().
That's what we are doing for you.
More info at:
Building the site
For prerequisites please check here
build, generate, commit, push, deploy
make site MSG="Updated site"
reset site (should not be necessary)