Fixed issue: is not a constructor when create object, save, undo, save, redo save

CHANGELOG.md

@@ -30,6 +30,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Project page requests took a long time and did many DB queries (<https://github.com/openvinotoolkit/cvat/pull/3223>)
 - Fixed Python 3.6 support (<https://github.com/openvinotoolkit/cvat/pull/3258>)
 - Incorrect attribute import in tracks (<https://github.com/openvinotoolkit/cvat/pull/3229>)
+- Issue "is not a constructor" when create object, save, undo, save, redo save (<https://github.com/openvinotoolkit/cvat/pull/3292>)
 - Fix CLI create an infinite loop if git repository responds with failure (<https://github.com/openvinotoolkit/cvat/pull/3267>)
 
 ### Security

cvat-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "cvat-core",
-  "version": "3.13.1",
+  "version": "3.13.2",
   "description": "Part of Computer Vision Tool which presents an interface for client-side integration",
   "main": "babel.config.js",
   "scripts": {

cvat-core/src/annotations-collection.js

@@ -788,6 +788,7 @@
                     () => {
                         importedArray.forEach((object) => {
                             object.removed = false;
+                            object.serverID = undefined;
                         });
                     },
                     importedArray.map((object) => object.clientID),

cvat-core/src/annotations-saver.js

@@ -1,11 +1,11 @@
-// Copyright (C) 2019-2020 Intel Corporation
+// Copyright (C) 2019-2021 Intel Corporation
 //
 // SPDX-License-Identifier: MIT
 
 (() => {
     const serverProxy = require('./server-proxy');
     const { Task } = require('./session');
-    const { ScriptingError } = './exceptions';
+    const { ScriptingError } = require('./exceptions');
 
     class AnnotationsSaver {
         constructor(version, collection, session) {

cvat-core/tests/api/annotations.js

@@ -311,6 +311,27 @@ describe('Feature: check unsaved changes', () => {
 });
 
 describe('Feature: save annotations', () => {
+    test('create, save, undo, save, redo save', async () => {
+        const task = (await window.cvat.tasks.get({ id: 101 }))[0];
+        await task.annotations.get(0);
+        const state = new window.cvat.classes.ObjectState({
+            frame: 0,
+            objectType: window.cvat.enums.ObjectType.SHAPE,
+            shapeType: window.cvat.enums.ObjectShape.POLYGON,
+            points: [0, 0, 100, 0, 100, 50],
+            occluded: true,
+            label: task.labels[0],
+            zOrder: 0,
+        });
+
+        await task.annotations.put([state]);
+        await task.annotations.save();
+        await task.actions.undo();
+        await task.annotations.save();
+        await task.actions.redo();
+        await task.annotations.save();
+    });
+
     test('create & save annotations for a task', async () => {
         const task = (await window.cvat.tasks.get({ id: 101 }))[0];
         let annotations = await task.annotations.get(0);