Run results for: object creation: new, object.create, literal+proto

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0

Browser: Firefox 105

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
new	78603304.0 Ops/sec
object.create	1400935.6 Ops/sec
spread+proto	8825729.0 Ops/sec
object.create+object.assign	8775298.0 Ops/sec

Script Preparation code:

function Thing() {
  this.prop1 = 0;
  this.prop2 = false;
}
Thing.prototype.doSomething = function () {
  this.prop1 = 1;
  this.prop2 = true;
};


let proto = {
  doSomething() {
    this.prop1 = 1;
    this.prop2 = true;
  }
}

function createThing() {
  return Object.create(proto, {
    prop1: {
      value: 0,
      writable: true
    },
    prop2: {
      value: false,
      writable: true
    }
  });
}

function literalThing() {
  return {
    prop1: 0,
    prop2: false,
    __proto__: proto
  };
}

function createAndAssignThing() {
  return Object.assign(Object.create(proto), {
    prop1: 0,
    prop2: false
  });
}

Tests:

new
new Thing();
object.create
createThing();
object literal+proto
literalThing();
object.create+object.assign
createAndAssignThing();

Run results for: object creation: new, object.create, literal+proto

new

object.create

object literal+proto

object.create+object.assign