From 6472d980882f6bd5bd61cde7855dbac7cba62f53 Mon Sep 17 00:00:00 2001
From: Mads Rasmussen <madsr@hey.com>
Date: Mon, 5 Aug 2024 15:04:34 +0200
Subject: [PATCH] check state for unique field

---
 .../src/packages/core/utils/state-manager/state.manager.ts     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/utils/state-manager/state.manager.ts b/src/Umbraco.Web.UI.Client/src/packages/core/utils/state-manager/state.manager.ts
index 5b829e9512..345012485a 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/utils/state-manager/state.manager.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/utils/state-manager/state.manager.ts
@@ -21,6 +21,7 @@ export class UmbStateManager<StateType extends UmbState = UmbState> extends UmbC
 	 * @memberof UmbStateManager
 	 */
 	addState(state: StateType) {
+		if (!state.unique) throw new Error('State must have a unique property');
 		// TODO: check if unique is already in the array
 		this._states.setValue([...this._states.getValue(), state]);
 	}
@@ -31,7 +32,7 @@ export class UmbStateManager<StateType extends UmbState = UmbState> extends UmbC
 	 * @memberof UmbStateManager
 	 */
 	addStates(states: StateType[]) {
-		this._states.setValue([...this._states.getValue(), ...states]);
+		states.forEach((state) => this.addState(state));
 	}
 
 	/**