Better multi-window updates

src-web/hooks/useRequestUpdateKey.ts

@@ -0,0 +1,14 @@
+import { createGlobalState } from 'react-use';
+import { generateId } from '../lib/generateId';
+
+const useGlobalState = createGlobalState<Record<string, string>>({});
+
+export function useRequestUpdateKey(requestId: string | null) {
+  const [keys, setKeys] = useGlobalState();
+  return {
+    updateKey: `${requestId}::${keys[requestId ?? 'n/a']}`,
+    wasUpdatedExternally: (changedRequestId: string) => {
+      setKeys((m) => ({ ...m, [changedRequestId]: generateId() }));
+    },
+  };
+}