如何更新mongoose中对象数组中的所有用户？

const mongoose = require('mongoose');

const userSchema = new mongoose.Schema({
  users: [{
    name: String,
    age: Number
  }]
});

const User = mongoose.model('User', userSchema);

User.updateMany({}, { $set: { 'users.$[].age': 30 } }, (err, result) => {
  if (err) {
    console.error(err);
  } else {
    console.log(result);
  }
});

User.updateMany({}, { $set: { 'users.$[].name': 'John' } }, (err, result) => {
  if (err) {
    console.error(err);
  } else {
    console.log(result);
  }
});