feedback3 WE: spectator seats in the browser — 观战 in the lobby, the 观战席 strip in the room (host removes, 入座), watch-only match screen; docs (community report #26)

public/js/store.js

@@ -103,6 +103,17 @@ export function selectRoute(s) {
   return 'lobby';
 }
 
+/**
+ * Whether the player holds one of the room's spectator seats (room.state `spectators`; community report #26, a remake
+ * feature): it is no player of the room or its match, watches like an eliminated player and may not act.
+ * @param {any} room room.state payload
+ * @param {string|null|undefined} playerId
+ * @returns {boolean}
+ */
+export function isSpectating(room, playerId) {
+  return playerId != null && Array.isArray(room?.spectators) && room.spectators.some((s) => s && s.playerId === playerId);
+}
+
 /**
  * The notice after a `welcome` that starts a brand-new server session (the server restarted, or this session expired
  * on it: a new playerId) while a room or a match was on screen — everything shown is gone. Null when nothing is lost