refactor

packages/element/src/newElement.ts

@@ -473,10 +473,12 @@ export const newLinearElement = (
   };
 
   if (isLineElement(element)) {
-    return {
+    const lineElement: NonDeleted<ExcalidrawLineElement> = {
       ...element,
       loopLock: false,
-    } as NonDeleted<ExcalidrawLineElement>;
+    };
+
+    return lineElement;
   }
 
   return element;

packages/element/src/shapes.ts

@@ -424,8 +424,11 @@ export const toggleLinePolygonState = (
     }
   }
 
-  return {
+  // TODO: satisfies ElementUpdate<ExcalidrawLineElement>
+  const ret = {
     loopLock: nextPolygonState,
     points: updatedPoints,
   };
+
+  return ret;
 };

packages/excalidraw/data/restore.ts

@@ -340,8 +340,8 @@ const restoreElement = (
         points,
         x,
         y,
-        ...(isLineElement(element) && element.loopLock === undefined
-          ? { loopLock: false }
+        ...(isLineElement(element)
+          ? { loopLock: element.loopLock ?? false }
           : {}),
         ...getSizeFromPoints(points),
       });