Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/desktop/electron/event-dedupe.ts

@@ -0,0 +1,32 @@
+// Cross-window de-dupe for one-shot side-effects (OS notifications, the turn-end
+// sound, spoken replies). Every desktop window is its own renderer process, so N
+// open windows each independently react to the same backend event. The main
+// process is the one place they all share and it handles IPC serially, so it's
+// the race-free owner: the first window to claim a key within the interval wins;
+// peers see it's taken and stay quiet. Pure + injectable clock, so it's
+// unit-testable without Electron.
+
+const DEDUPE_INTERVAL_MS = 1000
+
+// Returns true when `key` was already claimed within the interval (caller drops
+// this one). Self-evicting: stale keys are pruned on every call, so the map
+// can't grow unbounded.
+export function createEventDeduper(intervalMs = DEDUPE_INTERVAL_MS) {
+  const lastSeenAt = new Map<string, number>()
+
+  return function isDuplicate(key: string, now = Date.now()): boolean {
+    for (const [k, at] of lastSeenAt) {
+      if (now - at >= intervalMs) {
+        lastSeenAt.delete(k)
+      }
+    }
+
+    if (lastSeenAt.has(key)) {
+      return true
+    }
+
+    lastSeenAt.set(key, now)
+
+    return false
+  }
+}