diff --git a/src/persisters/persister-sync.ts b/src/persisters/persister-sync.ts
index 150b9718054..9929d21552e 100644
--- a/src/persisters/persister-sync.ts
+++ b/src/persisters/persister-sync.ts
@@ -1,11 +1,7 @@
 import {
   Bus,
-  BusStats,
   MessageType,
-  Receive,
-  Send,
   SyncPersister,
-  createLocalBus as createLocalBusDecl,
   createSyncPersister as createSyncPersisterDecl,
 } from '../types/persisters/persister-sync';
 import {
@@ -17,15 +13,17 @@ import {
   TablesStamp,
   ValuesStamp,
 } from '../types/mergeable-store';
-import {DEBUG, ifNotUndefined, isUndefined, promiseNew} from '../common/other';
 import {Id, IdOrNull} from '../types/common';
 import {IdMap, mapGet, mapNew, mapSet} from '../common/map';
-import {collDel, collForEach, collSize} from '../common/coll';
+import {ifNotUndefined, isUndefined, promiseNew} from '../common/other';
 import {EMPTY_STRING} from '../common/strings';
 import {PersisterListener} from '../types/persisters';
+import {collDel} from '../common/coll';
 import {createCustomPersister} from '../persisters';
 import {getHlcFunctions} from '../mergeable-store/hlc';
 
+export {createLocalBus} from './sync/bus-local';
+
 const RESPONSE = 0;
 const CONTENT_HASHES = 1;
 const GET_CONTENT_HASHES = 2;
@@ -200,44 +198,3 @@ export const createSyncPersister = ((
   ) as SyncPersister;
   return persister;
 }) as typeof createSyncPersisterDecl;
-
-export const createLocalBus = (() => {
-  let sends = 0;
-  let receives = 0;
-  const stores: IdMap<Receive> = mapNew();
-
-  const join = (storeId: Id, receive: Receive): [Send, () => void] => {
-    mapSet(stores, storeId, receive);
-    const send = (
-      requestId: IdOrNull,
-      toStoreId: IdOrNull,
-      messageType: MessageType,
-      messageBody: any,
-    ): void => {
-      if (DEBUG) {
-        sends++;
-        receives += isUndefined(toStoreId) ? collSize(stores) - 1 : 1;
-      }
-      isUndefined(toStoreId)
-        ? collForEach(stores, (receive, otherStoreId) =>
-            otherStoreId != storeId
-              ? receive(requestId, storeId, messageType, messageBody)
-              : 0,
-          )
-        : mapGet(stores, toStoreId)?.(
-            requestId,
-            storeId,
-            messageType,
-            messageBody,
-          );
-    };
-    const leave = (): void => {
-      collDel(stores, storeId);
-    };
-    return [send, leave];
-  };
-
-  const getStats = (): BusStats => (DEBUG ? {sends, receives} : {});
-
-  return {join, getStats} as Bus;
-}) as typeof createLocalBusDecl;
diff --git a/src/persisters/sync/bus-local.ts b/src/persisters/sync/bus-local.ts
new file mode 100644
index 00000000000..5c0e4200c1a
--- /dev/null
+++ b/src/persisters/sync/bus-local.ts
@@ -0,0 +1,53 @@
+import {
+  Bus,
+  BusStats,
+  MessageType,
+  Receive,
+  Send,
+  createLocalBus as createLocalBusDecl,
+} from '../../types/persisters/persister-sync';
+import {DEBUG, isUndefined} from '../../common/other';
+import {Id, IdOrNull} from '../../types/common';
+import {IdMap, mapGet, mapNew, mapSet} from '../../common/map';
+import {collDel, collForEach, collSize} from '../../common/coll';
+
+export const createLocalBus = (() => {
+  let sends = 0;
+  let receives = 0;
+  const stores: IdMap<Receive> = mapNew();
+
+  const join = (storeId: Id, receive: Receive): [Send, () => void] => {
+    mapSet(stores, storeId, receive);
+    const send = (
+      requestId: IdOrNull,
+      toStoreId: IdOrNull,
+      messageType: MessageType,
+      messageBody: any,
+    ): void => {
+      if (DEBUG) {
+        sends++;
+        receives += isUndefined(toStoreId) ? collSize(stores) - 1 : 1;
+      }
+      isUndefined(toStoreId)
+        ? collForEach(stores, (receive, otherStoreId) =>
+            otherStoreId != storeId
+              ? receive(requestId, storeId, messageType, messageBody)
+              : 0,
+          )
+        : mapGet(stores, toStoreId)?.(
+            requestId,
+            storeId,
+            messageType,
+            messageBody,
+          );
+    };
+    const leave = (): void => {
+      collDel(stores, storeId);
+    };
+    return [send, leave];
+  };
+
+  const getStats = (): BusStats => (DEBUG ? {sends, receives} : {});
+
+  return {join, getStats} as Bus;
+}) as typeof createLocalBusDecl;