Initialising packages outside of exports function

MongoDB Atlas App Services & Realm Atlas Triggers & Functions
1

Hi, why is it not possible to cache package initialising or global variables for function handlers?

Error on save: runtime error during function validation

const stripe = require('stripe')(context.values.get('STRIPE_API_KEY'));
const collection = context.services.get("mongodb-atlas").db("dev").collection("test");

exports = function(changeEvent) {
// do something
}