object-create-x v3.1.2

object-create-x

Sham for Object.create

module.exports ⇒ boolean ⏏

This method method creates a new object with the specified prototype object and properties.

Kind: Exported member
Returns: boolean - A new object with the specified prototype object and properties.
Throws:

• TypeError If the properties parameter isn't null or an object.

Example

import create from 'object-create-x';

// Shape - superclass
function Shape() {
  this.x = 0;
  this.y = 0;
}

// superclass method
Shape.prototype.move = function(x, y) {
  this.x += x;
  this.y += y;
  console.info('Shape moved.');
};

// Rectangle - subclass
function Rectangle() {
  Shape.call(this); // call super constructor.
}

// subclass extends superclass
Rectangle.prototype = create(Shape.prototype);
Rectangle.prototype.constructor = Rectangle;

const rect = new Rectangle();

console.log('Is rect an instance of Rectangle?', rect instanceof Rectangle); // true
console.log('Is rect an instance of Shape?', rect instanceof Shape); // true
rect.move(1, 1); // Outputs, 'Shape moved.'