implementation from the prompt

worker-toolkit-potion-polyglot-v1.0.1/repos/potion-voice/worker_tenant.js

@@ -0,0 +1,18 @@
+const mongoose = require('mongoose')
+
+const requireUserId = (userId) => {
+  if (typeof userId !== 'string' || !/^[a-f\d]{24}$/i.test(userId)) {
+    throw new Error('A valid job userId is required')
+  }
+  return userId
+}
+
+const tenantFilter = (filter) => {
+  if (!filter || typeof filter !== 'object') {
+    throw new Error('A tenant-scoped filter is required')
+  }
+  const userId = requireUserId(filter.userId)
+  return { ...filter, userId: new mongoose.Types.ObjectId(userId) }
+}
+
+module.exports = { requireUserId, tenantFilter }