message: One less Set
diff: @@ -662,7 +662,7 @@ class ServersInRoomList extends React.PureComponent<IExplorerProps, IServersInRo
  super(props);
  const room = this.props.room;
  - const servers: Set<string> = new Set();
  + const servers = new Set<string>();
  room.currentState.getStateEvents("m.room.member").forEach(ev => servers.add(ev.getSender().split(":")[1]));
  this.servers = Array.from(servers).map(s =>
  <button key={s} className="mx_DevTools_ServersInRoomList_button">
  