From 58d06d6591c0fedfafa1e23afead966ac9507bbd Mon Sep 17 00:00:00 2001
From: Gasim Gasimzada <me@gasim.xyz>
Date: Tue, 7 Jan 2020 19:31:10 +0400
Subject: [PATCH] If element ID does not exist, add the ID during restoration

---
 src/scene/data.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/scene/data.ts b/src/scene/data.ts
index 716f6fdc7..9733a1328 100644
--- a/src/scene/data.ts
+++ b/src/scene/data.ts
@@ -6,6 +6,7 @@ import { getElementAbsoluteCoords } from "../element";
 
 import { renderScene } from "../renderer";
 import { AppState } from "../types";
+import nanoid from "nanoid";
 
 const LOCAL_STORAGE_KEY = "excalidraw";
 const LOCAL_STORAGE_KEY_STATE = "excalidraw-state";
@@ -143,6 +144,7 @@ function restore(
           : savedElements)
       );
       elements.forEach((element: ExcalidrawElement) => {
+        element.id = element.id || nanoid();
         element.fillStyle = element.fillStyle || "hachure";
         element.strokeWidth = element.strokeWidth || 1;
         element.roughness = element.roughness || 1;