diff --git a/apps/files/src/actions/editLocallyAction.spec.ts b/apps/files/src/actions/editLocallyAction.spec.ts
index 9c7de1b78be31..07ccac5043d53 100644
--- a/apps/files/src/actions/editLocallyAction.spec.ts
+++ b/apps/files/src/actions/editLocallyAction.spec.ts
@@ -17,10 +17,11 @@ const view = {
 	name: 'Files',
 } as View
 
-// Mock webroot variable
+// Mock web root variable
 beforeAll(() => {
 	// eslint-disable-next-line @typescript-eslint/no-explicit-any
 	(window as any)._oc_webroot = '';
+	// eslint-disable-next-line @typescript-eslint/no-explicit-any
 	(window as any).OCA = { Viewer: { open: vi.fn() } }
 })
 
diff --git a/apps/files/src/components/FileEntryMixin.ts b/apps/files/src/components/FileEntryMixin.ts
index 4a4e4f497b5ec..38059471da426 100644
--- a/apps/files/src/components/FileEntryMixin.ts
+++ b/apps/files/src/components/FileEntryMixin.ts
@@ -213,11 +213,11 @@ export default defineComponent({
 		/**
 		 * When the source changes, reset the preview
 		 * and fetch the new one.
-		 * @param a
-		 * @param b
+		 * @param newSource The new value of the source prop
+		 * @param oldSource The previous value
 		 */
-		source(a: Node, b: Node) {
-			if (a.source !== b.source) {
+		source(newSource: Node, oldSource: Node) {
+			if (newSource.source !== oldSource.source) {
 				this.resetState()
 			}
 		},
diff --git a/apps/files/src/components/SidebarTab.vue b/apps/files/src/components/SidebarTab.vue
index a8a94fd4752d4..88dfd27ce5c7a 100644
--- a/apps/files/src/components/SidebarTab.vue
+++ b/apps/files/src/components/SidebarTab.vue
@@ -48,7 +48,7 @@ export default {
 		},
 		icon: {
 			type: String,
-			required: false,
+			default: '',
 		},
 
 		/**
diff --git a/apps/files/src/services/PreviewService.ts b/apps/files/src/services/PreviewService.ts
index 769a1fcfb9f37..6dbb67f30b6e9 100644
--- a/apps/files/src/services/PreviewService.ts
+++ b/apps/files/src/services/PreviewService.ts
@@ -8,18 +8,14 @@ const SWCacheName = 'previews'
 
 /**
  * Check if the preview is already cached by the service worker
- * @param previewUrl
+ * @param previewUrl URL to check
  */
-export const isCachedPreview = function(previewUrl: string): Promise<boolean> {
+export async function isCachedPreview(previewUrl: string): Promise<boolean> {
 	if (!window?.caches?.open) {
-		return Promise.resolve(false)
+		return false
 	}
 
-	return window?.caches?.open(SWCacheName)
-		.then(function(cache) {
-			return cache.match(previewUrl)
-				.then(function(response) {
-					return !!response
-				})
-		})
+	const cache = await window.caches.open(SWCacheName)
+	const response = await cache.match(previewUrl)
+	return response !== undefined
 }
diff --git a/apps/files/src/store/dragging.ts b/apps/files/src/store/dragging.ts
index 667c6fe67a726..da60f8413b037 100644
--- a/apps/files/src/store/dragging.ts
+++ b/apps/files/src/store/dragging.ts
@@ -13,8 +13,8 @@ export const useDragAndDropStore = defineStore('dragging', {
 
 	actions: {
 		/**
-		 * Set the selection of fileIds
-		 * @param selection
+		 * Set the selection of files being dragged currently
+		 * @param selection array of node sources
 		 */
 		set(selection = [] as FileSource[]) {
 			Vue.set(this, 'dragging', selection)
diff --git a/apps/files/src/store/files.ts b/apps/files/src/store/files.ts
index 952e3cd41c5b8..f2079bb1d4d5a 100644
--- a/apps/files/src/store/files.ts
+++ b/apps/files/src/store/files.ts
@@ -58,7 +58,7 @@ export const useFilesStore = function(...args) {
 			 *
 			 * @param service The service (files view)
 			 * @param path The path relative within the service
-			 * @returns Array of cached nodes within the path
+			 * @return Array of cached nodes within the path
 			 */
 			getNodesByPath(service: string, path?: string): Node[] {
 				const pathsStore = usePathsStore()
diff --git a/apps/files_external/tests/appSpec.js b/apps/files_external/tests/appSpec.js
index fcbef7ef8221e..4d150cd36bb9f 100644
--- a/apps/files_external/tests/appSpec.js
+++ b/apps/files_external/tests/appSpec.js
@@ -2,6 +2,7 @@
  * SPDX-FileCopyrightText: 2014 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
+import $ from 'jquery'
 
 describe('OCA.Files_External.App tests', function() {
 	const App = OCA.Files_External.App
diff --git a/apps/settings/src/components/AppStoreSidebar/AppDetailsTab.vue b/apps/settings/src/components/AppStoreSidebar/AppDetailsTab.vue
index f70696f410008..f3adbfd2a1ca5 100644
--- a/apps/settings/src/components/AppStoreSidebar/AppDetailsTab.vue
+++ b/apps/settings/src/components/AppStoreSidebar/AppDetailsTab.vue
@@ -343,16 +343,16 @@ export default {
 				.sort((a, b) => a.name.localeCompare(b.name))
 		},
 	},
-	mounted() {
-		if (this.app.groups.length > 0) {
-			this.groupCheckedAppsData = true
-		}
-	},
 	watch: {
 		'app.id'() {
 			this.removeData = false
 		},
 	},
+	mounted() {
+		if (this.app.groups.length > 0) {
+			this.groupCheckedAppsData = true
+		}
+	},
 	methods: {
 		toggleRemoveData() {
 			this.removeData = !this.removeData
@@ -427,6 +427,7 @@ export default {
 	border-color: var(--color-error);
 	background: var(--color-main-background);
 }
+
 .force:hover,
 .force:active {
 	color: var(--color-main-background);
diff --git a/core/src/components/setup/RecommendedApps.vue b/core/src/components/setup/RecommendedApps.vue
index 9bab568a924e0..ffd1480cc493e 100644
--- a/core/src/components/setup/RecommendedApps.vue
+++ b/core/src/components/setup/RecommendedApps.vue
@@ -55,16 +55,15 @@
 </template>
 
 <script>
-import axios from '@nextcloud/axios'
-import { generateUrl, imagePath } from '@nextcloud/router'
+import { t } from '@nextcloud/l10n'
 import { loadState } from '@nextcloud/initial-state'
+import { generateUrl, imagePath } from '@nextcloud/router'
+import axios from '@nextcloud/axios'
 import pLimit from 'p-limit'
-import { translate as t } from '@nextcloud/l10n'
+import logger from '../../logger.js'
 
-import NcCheckboxRadioSwitch from '@nextcloud/vue/dist/Components/NcCheckboxRadioSwitch.js'
 import NcButton from '@nextcloud/vue/dist/Components/NcButton.js'
-
-import logger from '../../logger.js'
+import NcCheckboxRadioSwitch from '@nextcloud/vue/dist/Components/NcCheckboxRadioSwitch.js'
 
 const recommended = {
 	calendar: {