Run results for: Object.create

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0

Browser: Firefox 113

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Plain object	4030946.8 Ops/sec
Person class instance	26109900.0 Ops/sec
Object.create()	776363.6 Ops/sec

Script Preparation code:

globalThis.create     = Object.create
globalThis.descriptor = {
        lastName:  { writeable: true, enumerable: true, configurable: false, value: "" },
        firstName: { writeable: true, enumerable: true, configurable: false, value: "" },
        name:      { writeable: true, enumerable: true, configurable: false, get () { return `${ this.firstName} ${ this.lastName }` } },
      };

globalThis.Person = class Person {
  lastName = ""
  firstName = ""
  constructor (firstName, lastName) {
    this.lastName  = lastName
    this.firstName = firstName
  }
  get name () { return `${ this.firstName} ${ this.lastName }` }
}

globalThis.plainObject    = {}
globalThis.personInstance = new Person
globalThis.createdPerson  = create(null, descriptor)

Tests:

Plain object
plainObject = { lastName: "Doe", firstName: "John", get name () { return `${ this.firstName} ${ this.lastName }` } }
Person class instance
personInstance = new Person("Doe", "John")
Object.create()
createdPerson = create(null, descriptor) createdPerson.lastName = "Doe" createdPerson.firstName = "John"

Run results for: Object.create

Plain object

Person class instance

Object.create()