Node.js Mongodb文档值类型是BSON LONG如何获取精确值？

npm install mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Error connecting to MongoDB', error);
  });

const myCollectionSchema = new mongoose.Schema({
  myField: mongoose.Schema.Types.Long
});

const MyCollection = mongoose.model('MyCollection', myCollectionSchema);

MyCollection.findOne({}, 'myField')
  .then((doc) => {
    const longValue = doc.myField.toString();
    console.log('BSON LONG value:', longValue);
  })
  .catch((error) => {
    console.error('Error querying MongoDB', error);
  });