creating advanced javascript responses

[skaskiewicz]

Hi, I have a question: how should I import/export JavaScript functions/classes that are stored in helper files? My mock is created based on dynamically generated data, so I use JavaScript. To run the mock, I use the official Docker image.
helper.js
export function daysLeft(currentDate, secondDate){ var date1 = new Date(currentDate); var date2 = new Date(secondDate); var difference = date2.getTime() - date1.getTime(); return Math.ceil(difference / (1000 * 3600 * 24)); }
response1.js
import { daysLeft} from './helper.js';
error when running
aused by: org.graalvm.polyglot.PolyglotException: ReferenceError: require is not defined at <js>.__run(Unnamed:17) ~[?:?] at org.graalvm.polyglot.Value.invokeMember(Value.java:971) ~[imposter.jar:?]