Here is my code:

interface Node{
  prop1?:string,
  prop2?:number,
//many more optional properties 
}

I have many objects of this interface.

Should I replace the optional properties with nullable ones to get better performance from the hidden class feature of JavaScript? For example:

interface Node{
  prop1: string|null,
  prop2 :number|null,
//many more nullable properties 
}