From c996512cba218a6fb59d39f185d0de7d5af797d7 Mon Sep 17 00:00:00 2001
From: Guillaume Chau <guillaume.b.chau@gmail.com>
Date: Mon, 5 Feb 2024 20:38:27 +0100
Subject: [PATCH] fix: handle layers is not array after restore

---
 .../src/features/timeline/composable/layers.ts         | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/packages/app-frontend/src/features/timeline/composable/layers.ts b/packages/app-frontend/src/features/timeline/composable/layers.ts
index b8710bc65..cae67ae29 100644
--- a/packages/app-frontend/src/features/timeline/composable/layers.ts
+++ b/packages/app-frontend/src/features/timeline/composable/layers.ts
@@ -40,9 +40,8 @@ export function layerFactory(options: LayerFromBackend): Layer {
 
 export function getLayers(appId: string) {
   let layers = layersPerApp.value[appId]
-  if (!layers) {
-    layers = []
-    layersPerApp.value[appId] = layers
+  if (!layers || !Array.isArray(layers)) {
+    layersPerApp.value[appId] = []
     layers = layersPerApp.value[appId]
   }
   return layers
@@ -50,9 +49,8 @@ export function getLayers(appId: string) {
 
 function getHiddenLayers(appId: string) {
   let layers = hiddenLayersPerApp.value[appId]
-  if (!layers) {
-    layers = []
-    hiddenLayersPerApp.value[appId] = layers
+  if (!layers || !Array.isArray(layers)) {
+    hiddenLayersPerApp.value[appId] = []
     layers = hiddenLayersPerApp.value[appId]
   }
   return layers