From 67dd6dfe00b2ab9b3682c52378a0cf70c4acc87b Mon Sep 17 00:00:00 2001
From: Beka Westberg <bwestberg@google.com>
Date: Mon, 13 Mar 2023 08:55:27 -0700
Subject: [PATCH] fix: empty procedure arrays in serialization (#6872)

---
 core/serialization/procedures.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/serialization/procedures.ts b/core/serialization/procedures.ts
index b29cd571d..06ec428df 100644
--- a/core/serialization/procedures.ts
+++ b/core/serialization/procedures.ts
@@ -138,8 +138,9 @@ export class ProcedureSerializer<ProcedureModel extends IProcedureModel,
 
   /** Serializes the procedure models of the given workspace. */
   save(workspace: Workspace): State[]|null {
-    return workspace.getProcedureMap().getProcedures().map(
+    const save = workspace.getProcedureMap().getProcedures().map(
         (proc) => saveProcedure(proc));
+    return save.length ? save : null;
   }
 
   /**