Constructor that returns a new constructor

Model.js

function Model() {
  var constructor = function(props) {
    Object.keys(props).forEach(function(key) {
      this[key] = props[key];
    }, this);
  };
  constructor.prototype = Object.create(Model.prototype);
  constructor.prototype.constructor = constructor;
  return constructor;
}

Model.prototype.foo = function() {};

var Name = new Model();
n = new Name({ first: 'Bob', last: 'Jones' });