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.

The issue names no source file or test. Start by reproducing the syntax error with the TypeScript 2.2.1 example and review the existing discussion about optional getters. Done requires a resolved behavior for get fullName?() and validation that matches that decision.