ckeditor · filipsobol · Oct 31, 2024 · Nov 13, 2024 · Nov 13, 2024 · Nov 20, 2024
diff --git a/LICENSE.md b/LICENSE.md
@@ -21,7 +21,7 @@ The following libraries are included in CKEditor under the [MIT license](https:/
 * BlurHash - Copyright (c) 2018 Wolt Enterprises (MIT license).
 * color-convert - Copyright (c) 2011–2016 Heather Arthur <[email protected]>, copyright (c) 2016–2021 Josh Junon <[email protected]>.
 * color-parse - Copyright (c) 2015 Dmitry Ivanov.
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 * Marked - Copyright (c) 2018+, MarkedJS (https://github.com/markedjs/), copyright (c) 2011–2018, Christopher Jeffrey (https://github.com/chjj/).
 * Turndown - Copyright (c) 2017+ Dom Christie.
 * turndown-plugin-gfm - Copyright (c) 2017+ Dom Christie.

diff --git a/packages/ckeditor5-autosave/LICENSE.md b/packages/ckeditor5-autosave/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-autosave/package.json b/packages/ckeditor5-autosave/package.json
@@ -16,7 +16,7 @@
     "@ckeditor/ckeditor5-core": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-dev-utils": "^45.0.0",

diff --git a/packages/ckeditor5-autosave/src/autosave.ts b/packages/ckeditor5-autosave/src/autosave.ts
@@ -20,7 +20,7 @@ import { DomEmitterMixin, type DomEmitter } from 'ckeditor5/src/utils.js';
 
 import type { DocumentChangeEvent } from 'ckeditor5/src/engine.js';
 
-import { debounce, type DebouncedFunc } from 'lodash-es';
+import { debounce, type DebouncedFunction } from 'es-toolkit/compat';
 
 /* globals window */
 
@@ -81,7 +81,7 @@ export default class Autosave extends Plugin {
 	 * Debounced save method. The `save()` method is called the specified `waitingTime` after `debouncedSave()` is called,
 	 * unless a new action happens in the meantime.
 	 */
-	private _debouncedSave: DebouncedFunc<( () => void )>;
+	private _debouncedSave: DebouncedFunction<( () => Promise<void> )>;
 
 	/**
 	 * The last saved document version.

diff --git a/packages/ckeditor5-ckbox/LICENSE.md b/packages/ckeditor5-ckbox/LICENSE.md
@@ -19,6 +19,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
 * blurhash - Copyright (c) 2018 Wolt Enterprises (MIT license).
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-ckbox/package.json b/packages/ckeditor5-ckbox/package.json
@@ -20,7 +20,7 @@
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
     "blurhash": "2.0.5",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-autosave": "44.1.0",

diff --git a/packages/ckeditor5-ckbox/src/ckboximageedit/ckboximageeditcommand.ts b/packages/ckeditor5-ckbox/src/ckboximageedit/ckboximageeditcommand.ts
@@ -20,7 +20,7 @@ import {
 } from 'ckeditor5/src/utils.js';
 import type { Element as ModelElement } from 'ckeditor5/src/engine.js';
 import { Notification } from 'ckeditor5/src/ui.js';
-import { isEqual } from 'lodash-es';
+import { isEqual } from 'es-toolkit/compat';
 
 import { sendHttpRequest } from '../utils.js';
 import { prepareImageAssetAttributes } from '../ckboxcommand.js';

diff --git a/packages/ckeditor5-ckbox/tests/ckboximageedit/ckboximageeditcommand.js b/packages/ckeditor5-ckbox/tests/ckboximageedit/ckboximageeditcommand.js
@@ -23,7 +23,7 @@ import { setData as setModelData, getData as getModelData } from '@ckeditor/cked
 import { getData as getViewData } from '@ckeditor/ckeditor5-engine/src/dev-utils/view.js';
 import { Notification } from 'ckeditor5/src/ui.js';
 import TokenMock from '@ckeditor/ckeditor5-cloud-services/tests/_utils/tokenmock.js';
-import _ from 'lodash-es';
+import * as _ from 'es-toolkit/compat';
 import CloudServicesCoreMock from '../_utils/cloudservicescoremock.js';
 import CKBoxEditing from '../../src/ckboxediting.js';
 import CKBoxImageEditEditing from '../../src/ckboximageedit/ckboximageeditediting.js';

diff --git a/packages/ckeditor5-clipboard/LICENSE.md b/packages/ckeditor5-clipboard/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-clipboard/package.json b/packages/ckeditor5-clipboard/package.json
@@ -18,7 +18,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "@ckeditor/ckeditor5-widget": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-alignment": "44.1.0",

diff --git a/packages/ckeditor5-clipboard/src/clipboardmarkersutils.ts b/packages/ckeditor5-clipboard/src/clipboardmarkersutils.ts
@@ -6,7 +6,7 @@
 /**
  * @module clipboard/clipboardmarkersutils
  */
-import { mapValues } from 'lodash-es';
+import { mapValues } from 'es-toolkit/compat';
 
 import { uid } from '@ckeditor/ckeditor5-utils';
 import { Plugin, type NonEmptyArray } from '@ckeditor/ckeditor5-core';

diff --git a/packages/ckeditor5-clipboard/src/dragdroptarget.ts b/packages/ckeditor5-clipboard/src/dragdroptarget.ts
@@ -34,7 +34,7 @@ import {
 
 import LineView from './lineview.js';
 
-import { throttle } from 'lodash-es';
+import { throttle } from 'es-toolkit/compat';
 
 /**
  * Part of the Drag and Drop handling. Responsible for finding and displaying the drop target.

diff --git a/packages/ckeditor5-code-block/LICENSE.md b/packages/ckeditor5-code-block/LICENSE.md
@@ -16,10 +16,6 @@ Sources of Intellectual Property Included in CKEditor
 
 Where not otherwise indicated, all CKEditor content is authored by CKSource engineers and consists of CKSource-owned intellectual property. In some specific instances, CKEditor will incorporate work done by developers outside of CKSource with their express permission.
 
-The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
-
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
-
 Trademarks
 ----------
 

diff --git a/packages/ckeditor5-core/LICENSE.md b/packages/ckeditor5-core/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-core/package.json b/packages/ckeditor5-core/package.json
@@ -27,7 +27,7 @@
     "@ckeditor/ckeditor5-engine": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "@ckeditor/ckeditor5-watchdog": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-autoformat": "44.1.0",

diff --git a/packages/ckeditor5-core/src/editor/editor.ts b/packages/ckeditor5-core/src/editor/editor.ts
@@ -7,7 +7,7 @@
  * @module core/editor/editor
  */
 
-import { set, get } from 'lodash-es';
+import { set, get } from 'es-toolkit/compat';
 
 import {
 	Config,

diff --git a/packages/ckeditor5-core/src/editor/utils/attachtoform.ts b/packages/ckeditor5-core/src/editor/utils/attachtoform.ts
@@ -7,7 +7,7 @@
  * @module core/editor/utils/attachtoform
  */
 
-import { isFunction } from 'lodash-es';
+import { isFunction } from 'es-toolkit/compat';
 
 import { CKEditorError } from '@ckeditor/ckeditor5-utils';
 

diff --git a/packages/ckeditor5-core/tests/_utils/classictesteditor.js b/packages/ckeditor5-core/tests/_utils/classictesteditor.js
@@ -12,7 +12,7 @@ import BoxedEditorUIView from '@ckeditor/ckeditor5-ui/src/editorui/boxed/boxeded
 import ElementReplacer from '@ckeditor/ckeditor5-utils/src/elementreplacer.js';
 import InlineEditableUIView from '@ckeditor/ckeditor5-ui/src/editableui/inline/inlineeditableuiview.js';
 import getDataFromElement from '@ckeditor/ckeditor5-utils/src/dom/getdatafromelement.js';
-import { isElement } from 'lodash-es';
+import { isElement } from 'es-toolkit/compat';
 import CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror.js';
 
 /**

diff --git a/packages/ckeditor5-core/tests/accessibility.js b/packages/ckeditor5-core/tests/accessibility.js
@@ -5,7 +5,7 @@
 
 import { Editor } from '@ckeditor/ckeditor5-core';
 import { expectToThrowCKEditorError } from '@ckeditor/ckeditor5-utils/tests/_utils/utils.js';
-import { cloneDeep } from 'lodash-es';
+import { cloneDeep } from 'es-toolkit/compat';
 
 describe( 'Accessibility', () => {
 	let editor, accessibility;

diff --git a/packages/ckeditor5-editor-balloon/LICENSE.md b/packages/ckeditor5-editor-balloon/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-editor-balloon/package.json b/packages/ckeditor5-editor-balloon/package.json
@@ -17,7 +17,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-editor-balloon/src/ballooneditor.ts b/packages/ckeditor5-editor-balloon/src/ballooneditor.ts
@@ -22,7 +22,7 @@ import { CKEditorError, getDataFromElement } from 'ckeditor5/src/utils.js';
 import BalloonEditorUI from './ballooneditorui.js';
 import BalloonEditorUIView from './ballooneditoruiview.js';
 
-import { isElement as _isElement } from 'lodash-es';
+import { isElement as _isElement } from 'es-toolkit/compat';
 
 /**
  * The balloon editor implementation (Medium-like editor).

diff --git a/packages/ckeditor5-editor-balloon/tests/ballooneditorui.js b/packages/ckeditor5-editor-balloon/tests/ballooneditorui.js
@@ -15,7 +15,7 @@ import Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph.js';
 import Heading from '@ckeditor/ckeditor5-heading/src/heading.js';
 
 import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard.js';
-import { isElement } from 'lodash-es';
+import { isElement } from 'es-toolkit/compat';
 import VirtualTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/virtualtesteditor.js';
 import { setData as setModelData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model.js';
 import { assertBinding } from '@ckeditor/ckeditor5-utils/tests/_utils/utils.js';

diff --git a/packages/ckeditor5-editor-classic/LICENSE.md b/packages/ckeditor5-editor-classic/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-editor-classic/package.json b/packages/ckeditor5-editor-classic/package.json
@@ -17,7 +17,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-editor-classic/src/classiceditor.ts b/packages/ckeditor5-editor-classic/src/classiceditor.ts
@@ -19,7 +19,7 @@ import {
 } from 'ckeditor5/src/core.js';
 import { getDataFromElement, CKEditorError } from 'ckeditor5/src/utils.js';
 
-import { isElement as _isElement } from 'lodash-es';
+import { isElement as _isElement } from 'es-toolkit/compat';
 
 /**
  * The classic editor implementation. It uses an inline editable and a sticky toolbar, all enclosed in a boxed UI.

diff --git a/packages/ckeditor5-editor-classic/tests/classiceditorui.js b/packages/ckeditor5-editor-classic/tests/classiceditorui.js
@@ -19,7 +19,7 @@ import { setData as setModelData } from '@ckeditor/ckeditor5-engine/src/dev-util
 import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard.js';
 import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils.js';
 import { assertBinding } from '@ckeditor/ckeditor5-utils/tests/_utils/utils.js';
-import { isElement } from 'lodash-es';
+import { isElement } from 'es-toolkit/compat';
 import { ContextualBalloon, Dialog, DialogViewPosition } from '@ckeditor/ckeditor5-ui';
 
 describe( 'ClassicEditorUI', () => {

diff --git a/packages/ckeditor5-editor-decoupled/LICENSE.md b/packages/ckeditor5-editor-decoupled/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-editor-decoupled/package.json b/packages/ckeditor5-editor-decoupled/package.json
@@ -17,7 +17,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-editor-decoupled/src/decouplededitor.ts b/packages/ckeditor5-editor-decoupled/src/decouplededitor.ts
@@ -22,7 +22,7 @@ import {
 import DecoupledEditorUI from './decouplededitorui.js';
 import DecoupledEditorUIView from './decouplededitoruiview.js';
 
-import { isElement as _isElement } from 'lodash-es';
+import { isElement as _isElement } from 'es-toolkit/compat';
 
 /**
  * The decoupled editor implementation. It provides an inline editable and a toolbar. However, unlike other editors,

diff --git a/packages/ckeditor5-editor-decoupled/tests/decouplededitorui.js b/packages/ckeditor5-editor-decoupled/tests/decouplededitorui.js
@@ -18,7 +18,7 @@ import VirtualTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/virtualtest
 import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard.js';
 import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils.js';
 import { assertBinding } from '@ckeditor/ckeditor5-utils/tests/_utils/utils.js';
-import { isElement } from 'lodash-es';
+import { isElement } from 'es-toolkit/compat';
 import { setData as setModelData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model.js';
 
 describe( 'DecoupledEditorUI', () => {

diff --git a/packages/ckeditor5-editor-inline/LICENSE.md b/packages/ckeditor5-editor-inline/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-editor-inline/package.json b/packages/ckeditor5-editor-inline/package.json
@@ -17,7 +17,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-editor-inline/src/inlineeditor.ts b/packages/ckeditor5-editor-inline/src/inlineeditor.ts
@@ -20,7 +20,7 @@ import { getDataFromElement, CKEditorError } from 'ckeditor5/src/utils.js';
 import InlineEditorUI from './inlineeditorui.js';
 import InlineEditorUIView from './inlineeditoruiview.js';
 
-import { isElement as _isElement } from 'lodash-es';
+import { isElement as _isElement } from 'es-toolkit/compat';
 
 /**
  * The inline editor implementation. It uses an inline editable and a floating toolbar.
@@ -222,6 +222,6 @@ function getInitialData( sourceElementOrData: HTMLElement | string ): string {
 	return isElement( sourceElementOrData ) ? getDataFromElement( sourceElementOrData ) : sourceElementOrData;
 }
 
-function isElement( value: any ): value is Element {
+function isElement( value: any ): value is HTMLElement {
 	return _isElement( value );
 }
diff --git a/packages/ckeditor5-editor-inline/tests/inlineeditorui.js b/packages/ckeditor5-editor-inline/tests/inlineeditorui.js
@@ -18,7 +18,7 @@ import VirtualTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/virtualtest
 import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard.js';
 import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils.js';
 import { assertBinding } from '@ckeditor/ckeditor5-utils/tests/_utils/utils.js';
-import { isElement } from 'lodash-es';
+import { isElement } from 'es-toolkit/compat';
 import { setData as setModelData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model.js';
 
 describe( 'InlineEditorUI', () => {

diff --git a/packages/ckeditor5-editor-multi-root/LICENSE.md b/packages/ckeditor5-editor-multi-root/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-editor-multi-root/package.json b/packages/ckeditor5-editor-multi-root/package.json
@@ -17,7 +17,7 @@
     "@ckeditor/ckeditor5-ui": "44.1.0",
     "@ckeditor/ckeditor5-utils": "44.1.0",
     "ckeditor5": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-editor-multi-root/src/multirooteditor.ts b/packages/ckeditor5-editor-multi-root/src/multirooteditor.ts
@@ -26,7 +26,7 @@ import {
 import MultiRootEditorUI from './multirooteditorui.js';
 import MultiRootEditorUIView from './multirooteditoruiview.js';
 
-import { isElement as _isElement } from 'lodash-es';
+import { isElement as _isElement } from 'es-toolkit/compat';
 import {
 	type RootElement,
 	type ViewRootEditableElement,
@@ -935,7 +935,7 @@ function getInitialData( sourceElementOrData: HTMLElement | string ): string {
 	return isElement( sourceElementOrData ) ? getDataFromElement( sourceElementOrData ) : sourceElementOrData;
 }
 
-function isElement( value: any ): value is Element {
+function isElement( value: any ): value is HTMLElement {
 	return _isElement( value );
 }
 

diff --git a/packages/ckeditor5-engine/LICENSE.md b/packages/ckeditor5-engine/LICENSE.md
@@ -18,7 +18,7 @@ Where not otherwise indicated, all CKEditor content is authored by CKSource engi
 
 The following libraries are included in CKEditor under the [MIT license](https://opensource.org/licenses/MIT):
 
-* Lodash - Copyright (c) JS Foundation and other contributors https://js.foundation/. Based on Underscore.js, copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors http://underscorejs.org/.
+* es-toolkit - Copyright (c) 2024 Viva Republica, Inc.
 
 Trademarks
 ----------

diff --git a/packages/ckeditor5-engine/package.json b/packages/ckeditor5-engine/package.json
@@ -25,7 +25,7 @@
   "main": "src/index.ts",
   "dependencies": {
     "@ckeditor/ckeditor5-utils": "44.1.0",
-    "lodash-es": "4.17.21"
+    "es-toolkit": "1.30.1"
   },
   "devDependencies": {
     "@ckeditor/ckeditor5-basic-styles": "44.1.0",

diff --git a/packages/ckeditor5-engine/src/conversion/downcasthelpers.ts b/packages/ckeditor5-engine/src/conversion/downcasthelpers.ts
@@ -57,7 +57,7 @@ import {
 	type PriorityString
 } from '@ckeditor/ckeditor5-utils';
 
-import { cloneDeep } from 'lodash-es';
+import { cloneDeep } from 'es-toolkit/compat';
 
 /**
  * Downcast conversion helper functions.