Javascript: Inside class constructor method, initiate object and access one of its keys' value in another key's value

Question

While defining a class, inside the constructor method, I am trying to access the value stored in myKeyOne for calculating the value that should be stored in myKeyTwo - however i get an error Uncaught TypeError: Cannot read properties of undefined (reading 'myKeyOne')

I managed to access the value stored in myKeyOne for calculating the value for myKeyThree though, which is outside of myObject

class MyClass {
  constructor() {
    this.myObject = {
      myKeyOne: 1,
      myKeyTwo: this.myObject.myKeyOne + 1
    };
    this.myKeyThree = this.myObject.myKeyOne + 1
  }
}

My question hence - Is it simply not possible to access the value of one key of an object when calcualting the value of another key of the same object in a class constructor method, or am I doing something wrong here?