Sync my stories with primary device

ts/util/getRecipientConversationIds.ts

@@ -0,0 +1,27 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { ConversationAttributesType } from '../model-types.d';
+
+import { getRecipients } from './getRecipients';
+import { strictAssert } from './assert';
+
+// Recipients includes only the people we'll actually send to for this conversation
+export function getRecipientConversationIds(
+  conversationAttrs: ConversationAttributesType
+): Set<string> {
+  const recipients = getRecipients(conversationAttrs);
+  const conversationIds = recipients.map(identifier => {
+    const conversation = window.ConversationController.getOrCreate(
+      identifier,
+      'private'
+    );
+    strictAssert(
+      conversation,
+      'getRecipientConversationIds should have created conversation!'
+    );
+    return conversation.id;
+  });
+
+  return new Set(conversationIds);
+}