"// noprotect"

function Opa(stuff) {

  this.stuff = stuff;

}

​

Opa.prototype = {

  constructor: Opa,

  sayStuff: function() {

    console.log(this.stuff);

  }

};

​

const OpaProto = {

  sayStuff: function() {

    console.log(this.stuff);

  }  

};

//no protect

let array1 = [], array2 = [], time;

const testNumber = 1000000;

​

time = Date.now();

for (let i = 0; i < testNumber; i++) {

  array1.push(new Opa(Math.random()));

}

console.log('with new:', Date.now() - time);

​

time = Date.now();

for (let i = 0; i < testNumber; i++) {

  let o = Object.create(OpaProto);

  o.stuff = Math.random();

  array2.push(o);

}

console.log('with Object.create', Date.now() - time);

​