Is Prototype.js still needed with ES2021 or can I simply define a class?

[Tobias Persson_]

Hey community!

I was wondering if I still need to use the old Script Include pattern for class creation. This is currently inserted by the ServiceNow instance when I create a new Script Include:

var MyScriptInclude = Class.create();
MyScriptInclude.prototype = {
  initialize: function() {
  },

  type: 'MyScriptInclude'
};

Now, I would like to know if I can replace this with the following code and still expect it to work as it should when my scoped application is set to ECMA2021:

class MyScriptInclude {
  contructor() {

  }

  myOwnMethod() {

  }
}

Tobias