node-acorn 5.1.2+ds1-1 (s390x binary) in ubuntu bionic

 Acorn is a tiny, fast JavaScript parser written in JavaScript.
 .
 acorn.js defines the main parser interface. The library also comes with a
 error-tolerant parser and an abstract syntax tree walker, defined in other
 files.
 .
 This package contains the acorn module for Node.js.
 .
 Node.js is an event-based server-side JavaScript engine.