DEV: mark vars as private and initialize with the controller (PR #10929)

Followup on #10888


  _newPostsInStream: null,


init() {
  this.set("_newPostsInStream", []);

Or if you don’t need _newPostsInStream to be computed, you could just remove all of this and do:

init() {
  this. _newPostsInStream = [];

If you want to know more about this:

same a my other comment, if it’s not meant to be computed, you could just define it in init, although it’s not an array or object, so it’s fine like this.

K closing this… re-doing this with another fix.