Conditional element in class constructor in JavaScript

Question

I know that in javascript we can add an conditional parameter for object like this:

const a = {
   ...(someCondition && {b: 5})
}

Is there a possibility to do something like that in classes and to hide width depends if it is passed or not as above?:

class Rectangle {
  constructor(height, width) {
    this.height = height;
    this.width = width; // this should be conditional
  }
}

Answer 1

You don't need to use anything complex to achieve this. An if statement would suffice for a situation like this.

class Rectangle {
  constructor(height, width) {
    this.height = height;
    if (width) this.width = width; // this should be conditional
    console.log(this)
  }
}
new Rectangle(1)

This would work completely fine in javascript^^