RocketChat/Rocket.Chat

import type { IOmnichannelRoom } from '@rocket.chat/core-typings';
import moment from 'moment';

export const formatQueuedAt = (room: IOmnichannelRoom) => {
    const { servedBy, closedAt, open, queuedAt, ts } = room || {};
    const queueStartedAt = queuedAt || ts;

    // Room served
    if (servedBy) {
        return moment(servedBy.ts).from(moment(queueStartedAt), true);
    }

    // Room open and not served
    if (open) {
        return moment(queueStartedAt).fromNow(true);
    }

    // Room closed and not served
    if (closedAt && queueStartedAt) {
        return moment(closedAt).from(moment(queueStartedAt), true);
    }

    return '';
};