从mongoose文档中获取纯javascript对象(或支持JSON的对象)

const mongoose = require('mongoose');

// 定义模型
const schema = new mongoose.Schema({
  name: String,
  age: Number
});

const Model = mongoose.model('Model', schema);

// 查询文档
Model.findOne({ name: 'John' }, (err, doc) => {
  if (err) {
    console.error(err);
    return;
  }

  // 将文档转换为普通对象
  const plainObject = doc.toObject();

  console.log(plainObject);
});