Implementing es6 syntax for overloading a library class

In my project, I have various objects that extend other objects from a library. The library object extends the Object class of the library.

Therefore, the architecture is as follows:

// The library object class
class Object {

}

// The library object1 class that extends object library class
class Object1 extends Object{

}

// The library object2 class that extends object library class
class Object2 extends Object{

}


// My object class that extends Object1 library class
class MyObject extends Object1{

}

// My second object class that extends Object2 library class
class MySecondObject extends Object2{

}

My question is, how can I use ES6 syntax to add a method to the 'Object' class of the library I am using without modifying the code of the library (a Node module).

In ES5, I would have done something like:

MyLib.Object.prototype.myNewMethod = function () {
}

In order to achieve:

const o = new MyObject();
o.myNewMethod();
const o2 = new MySecondObject();
o2.myNewMethod();

Thank you for your assistance.

Answer №1

Are you satisfied with this solution?

// Defining a library object class
class Object {
  myNewMethod() {}
}

Even in ES6, you have the option to utilize Object.prototype

Object.prototype.myNewMethod = function() {}

It is recommended to keep the original base class unchanged and utilize inheritance for modifications.

class Object1 extends Object {
  myNewMethod() {}
}

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