Binary package “node-es-abstract” in ubuntu oracular

ECMAScript spec abstract operations

 When different versions of the spec conflict, the default export will be the
 latest version of the abstract operation.
 .
 All abstract operations will also be available under an es5/es2015/es2016
 entry point, and exported property, if you require a specific version.
 .
 Node.js is an event-based server-side JavaScript engine.