From 81801582e9d49705a3d78c02113aac8b1019f925 Mon Sep 17 00:00:00 2001
From: Adria Navarro <adria@budibase.com>
Date: Tue, 14 May 2024 17:43:42 +0200
Subject: [PATCH] Add type guards

---
 packages/shared-core/src/helpers/schema.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/shared-core/src/helpers/schema.ts b/packages/shared-core/src/helpers/schema.ts
index 985e068be0..ad4c237247 100644
--- a/packages/shared-core/src/helpers/schema.ts
+++ b/packages/shared-core/src/helpers/schema.ts
@@ -6,7 +6,10 @@ import {
 
 export function isDeprecatedSingleUserColumn(
   schema: Pick<FieldSchema, "type" | "subtype" | "constraints">
-) {
+): schema is {
+  type: FieldType.BB_REFERENCE
+  subtype: BBReferenceFieldSubType.USER
+} {
   const result =
     schema.type === FieldType.BB_REFERENCE &&
     schema.subtype === BBReferenceFieldSubType.USER &&