问如何从nodejs中的模块中引用货币集合

EN

const currency = new Discord.Collection();


//defining methods for the currency collection
Reflect.defineProperty(currency, 'add', {
    /* eslint-disable-next-line func-name-matching */
    value: async function add(id, amount) {
        const user = currency.get(id);
        if (user) {
            user.balance += Number(amount);
            return user.save();
        }
        const newUser = await Users.create({ user_id: id, balance: amount });
        currency.set(id, newUser);
        return newUser;
    },
});

Reflect.defineProperty(currency, 'getBalance', {
    /* eslint-disable-next-line func-name-matching */
    value: function getBalance(id) {
        const user = currency.get(id);
        return user ? user.balance : 0;
    },
});

module.exports = {
    name: 'balance',
    description: 'get balance',
    execute(message, args) {

    const target = message.mentions.users.first() || message.author;
    return message.channel.send(`${target.tag} has ${currency.getBalance(target.id)}`);

    },
};