The node parser is a powerful node based language parser library built upon Irony. The NodeParser is used in SolScript
Sadly, as of now there is none. I will add documentation once SolScript has reached a proper release version and I am fully confident that the NodeParser is feature complete.
However, I recorded a YouTube video going over the basics of the NodeParser if you are interested: https://www.youtube.com/watch?v=foufYNOaP64