Message from JavaScript discussions

June 2017

— It is non enumerable, which can be useful

—

Another thing you could do with the function syntax that you CAN'T do with class syntax is to 'redirect' the caller to use new if they omitted it:

function MyClass() {
  if (!(this instanceof MyClass)) {
    return new MyClass();
  }
  // ...
}

class syntax doesn't give you this at all

— Will return an object that is always instanceof MyClass

— Pretty awesome

— Wow

— That is sick!!

— A few builtins use this

— Including Symbol it seems

— That is like a factory-constructor hybrid

— Btw, IMO when it comes to making properties private, symbols will never be more useful than regular scope-restriction. Pipe interfaces of friend objects through a private event bus, problem solved. Instead of making every private friend-accessable member into some complicated system, you just make a single system private which enables that interface

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— Yeah, I don't even use these structures that much

— I just prefer passing and returning functions rather than objects