update

lib/notify-fanout.js

@@ -0,0 +1,21 @@
+'use strict';
+
+function createSubscribers() {
+  const clip = new Set();
+  const fav  = new Set();
+  const theme = new Set();
+  return {
+    addClip:  (wc) => clip.add(wc),
+    addFav:   (wc) => fav.add(wc),
+    addTheme: (wc) => theme.add(wc),
+    drop: (wc) => { clip.delete(wc); fav.delete(wc); theme.delete(wc); },
+    notifyClip:  (ch, payload) => { for (const wc of clip)  try { wc.send(ch, payload); } catch {} },
+    notifyFav:   (ch, payload) => { for (const wc of fav)   try { wc.send(ch, payload); } catch {} },
+    notifyTheme: (ch, payload) => { for (const wc of theme) try { wc.send(ch, payload); } catch {} },
+    get clip() { return clip; },
+    get fav() { return fav; },
+    get theme() { return theme; },
+  };
+}
+
+module.exports = { createSubscribers };