The query language for Riemann uses a parser made with ANTLR. ANTLR has many compile targets, so it was reasonably easy to port the parser from Clojure to Nodejs.

https://github.com/riemann/riemann/blob/master/resources/que...

https://github.com/nextorigin/riemann-query-parser/blob/mast...

I'm using it with Godot2, a Riemann-like streaming monitoring system in Nodejs.

https://github.com/nextorigin/godot2-dash