Getters and setters with computed names emit invalid code

[adrianheine]

obj = {
  get [x] () { return 1 },
  set [x] (value) { valueSet = value }
};

emits

obj = {};
objget [x] = () { return 1 };
objset [x] = (value) { valueSet = value };

[adrianheine]

See also #20 about getters and setters in general.

[nathancahill]

I think the only way to support this concisely is by using Object.defineProperty which isn't supported in IE8.

[nathancahill]

Would still be better than invalid code.

[adrianheine]

We could just bail if target is IE8 and we try to transpile getters or setters.

[adrianheine]

Note that in class bodies computed getters and setters throw an error, and I implemented my last suggestion in 9d0e728.