如何使用node js (mongoose)删除mongodb中的相关schema

const mongoose = require('mongoose');

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

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

User.deleteOne({ name: 'John' }, function(err) {
  if (err) {
    console.log(err);
  } else {
    console.log('User deleted successfully');
  }
});

User.deleteMany({ age: { $gt: 30 } }, function(err) {
  if (err) {
    console.log(err);
  } else {
    console.log('Users deleted successfully');
  }
});