Virtual Types with Archetype

archetype-20180112-virtuals.js

const Archetype = require('archetype');

const UserBaseType = new Archetype({
  name: {
    first: {
      $type: 'string',
      $required: true
    },
    last: {
      $type: 'string',
      $required: true
    }
  }
}).compile('UserBaseType');

// `UserBaseType` is a plain JS class, so you can `extends`
class UserType extends UserBaseType {
  // Plain old ES6 getters and setters. This gets you the full name
  get fullName() {
    return `${this.name.first} ${this.name.last}`;
  }

  // You can also create `firstName` and `lastName` as aliases for
  // `name.first` and `name.last`
  get firstName() {
    return this.name.first;
  }

  set firstName(v) {
    this.name.first = v;
  }

  get lastName() {
    return this.name.last;
  }

  set lastName(v) {
    this.name.last = v;
  }
}

const user = new UserType({ name: { first: 'Axl', last: 'Rose' } });

console.log(user.fullName); // 'Axl Rose'
console.log(user.lastName); // 'Rose'

user.firstName = 'William';

console.log(user.name.first); // 'William'
console.log(user.fullName); // 'William Rose'