Cannot Optionalize Class Getters

TypeScript Version: 2.2.1

Code

class Person {
  firstName: string;
  lastName: string;

  get fullName?() {
    return this.firstName + ' ' + this.lastName;
  }
}

Expected behavior:

Since fullName is optional the following should work:

const Me: Person = {
  firstName: 'Foo',
  lastName: 'Bar'
}

Actual behavior:

A syntax error occurs on this line get fullName?() {

I’m not sure if omitting the ability to optionalize getters was by design or not. If it was by design, I’d love to know the reasoning behind it.

[Venryx]

@mhegazy Like bradenhs said, class methods can be made optional, as shown in this merged PR: https://github.com/Microsoft/TypeScript/pull/8625

class Bar {
    h?() {
        return 2;
    }
}

As can be seen, it’s an optional method that also has a body/implementation specified.

That’s the same thing we’d like for class getters/setters, like so:

class Bar {
    get h?() {
        return 2;
    }
}

However, this doesn’t compile currently, which seems inconsistent when class methods work with it fine.

[RyanCavanaugh]

@mhegazy seems inconsistent to allow (bodied) optional methods but not getters. Thoughts?