Literal properties not yet supported

[moroine]

Flow version: 0.183.1

Expected behavior

The following code is failing in Flow with Literal properties not yet supported.

class A {
  '1prop' = 1;
  '2prop' = 'a';
  'some-value': null;
  'with space': null;
}

https://flow.org/try/#0MYGwhgzhAECC0G8BQ1oHICMAHATgeyzWgF5oMBuFdAJlwKNLTDUtTQjwFsBTAWgDcwIAK7c0ALmgA7YSBCt0AdwCWAFwAW0CFjDAxkmXMoBfIA

Actual behavior

Support the following syntax as it's valid JavaScript. According to the message I know that's something which is not implemented yet, but I can't find any related issue to track the support.