#!/usr/local/bin/node
newArray = (n) => {
  var a = Object.create(null);
  Object.setPrototypeOf(a, Array.prototype);
  a.length = n;
  return a;
}
console.log((newArray(2)).map)
console.log((newArray(2)).map($=>"hello"))
console.log(Array.from(newArray(2)).map($=>"hello"))