Mongoose Schema Inheritance

man.js

const mongoose = require('mongoose')

const { PersonSchema } = require('./person')

class ManSchema extends PersonSchema {
  constructor(obj, options) {
    super(obj, options)
    this.add({ age: { type: String, required: true } })
  }
}
const Man = new ManSchema({}, { timestamps: true }, { usePushEach: true })
module.exports = mongoose.model('Man', Man)

person.js

const mongoose = require('mongoose')

const { Schema } = mongoose

class PersonSchema extends Schema {
  constructor(obj, options) {
    super(obj, options)
    this.add({ name: { type: String, required: true } })
  }
}

const Person = new PersonSchema({}, { timestamps: true }, { usePushEach: true })

exports.PersonSchema = PersonSchema
exports.Person = mongoose.model('Person', Person)