OOP Factory Fxn.

index.js

// Build prototype of methods
const proto = {
  hello() {
    return `Hello, my name is ${this.name}`;
  }
};

// Merge a new proto object along with the properties and merge them.
const greeter = name =>
  Object.assign(
    /**
     * The Object.create() method creates a new object, using an existing object as the prototype of the newly created object.
     * (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create)
     */
    Object.create(proto),
    {
      name
    }
  );

console.log(greeter, "greeter");

// Pump out a new 'created' person
const george = greeter("george");

console.log(george, "george");

console.log(george.hello());