import percentRound from './percent-round.js'; //use percentRound on an AsyncTree array: first convert it to a normal array. export default async function (asyncVals) { const records = []; for (const key of await asyncVals.keys()) { const record = await asyncVals.get(key); records.push(record.months); } console.log(records); const foobar = percentRound(records, 3) console.log(foobar); }