diff --git a/.eslintignore b/.eslintignore
index 9714669e5aa..bd4bc312a47 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -31,6 +31,7 @@ packages/app-cli/tests/tmp
 packages/app-clipper/content_scripts/JSDOMParser.js
 packages/app-clipper/content_scripts/Readability-readerable.js
 packages/app-clipper/content_scripts/Readability.js
+packages/app-clipper/content_scripts/clipperUtils.js
 packages/app-clipper/dist
 packages/app-clipper/icons
 packages/app-clipper/popup/build
diff --git a/.eslintrc.js b/.eslintrc.js
index 7e4a0632cd6..2f8f2c9defe 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -87,6 +87,7 @@ module.exports = {
 			allowEmptyReject: true,
 		}],
 		'no-throw-literal': ['error'],
+		'no-unused-expressions': ['error'],
 
 		// This rule should not be enabled since it matters in what order
 		// imports are done, in particular in relation to the shim.setReact
diff --git a/packages/app-desktop/gui/NoteContentPropertiesDialog.tsx b/packages/app-desktop/gui/NoteContentPropertiesDialog.tsx
index 29658336088..71aaf27b1bb 100644
--- a/packages/app-desktop/gui/NoteContentPropertiesDialog.tsx
+++ b/packages/app-desktop/gui/NoteContentPropertiesDialog.tsx
@@ -38,7 +38,7 @@ function countElements(text: string, wordSetter: Function, characterSetter: Func
 		characterSetter(counter.all);
 		characterNoSpaceSetter(counter.characters);
 	});
-	text === '' ? lineSetter(0) : lineSetter(text.split('\n').length);
+	lineSetter(text === '' ? 0 : text.split('\n').length);
 }
 
 function formatReadTime(readTimeMinutes: number) {
diff --git a/packages/app-mobile/services/voiceTyping/vosk.android.ts b/packages/app-mobile/services/voiceTyping/vosk.android.ts
index 157249ab550..cd23d6e27bb 100644
--- a/packages/app-mobile/services/voiceTyping/vosk.android.ts
+++ b/packages/app-mobile/services/voiceTyping/vosk.android.ts
@@ -117,7 +117,7 @@ export const startRecording = (vosk: Vosk, options: StartOptions): VoiceTypingSe
 			eventHandler.remove();
 		}
 
-		vosk.cleanup(),
+		vosk.cleanup();
 
 		state_ = State.Idle;
 
diff --git a/packages/app-mobile/web/serviceWorker.ts b/packages/app-mobile/web/serviceWorker.ts
index 40c1f85259b..f5ee4bea2ee 100644
--- a/packages/app-mobile/web/serviceWorker.ts
+++ b/packages/app-mobile/web/serviceWorker.ts
@@ -207,6 +207,16 @@ if (typeof window === 'undefined') {
 			quiet: false,
 		};
 
+		const consoleLog = (...args: unknown[]) => {
+			if (coi.quiet) return;
+			console.log(...args);
+		};
+
+		const consoleError = (...args: unknown[]) => {
+			if (coi.quiet) return;
+			console.error(...args);
+		};
+
 		const n = navigator;
 		const controlling = n.serviceWorker && n.serviceWorker.controller;
 
@@ -228,7 +238,7 @@ if (typeof window === 'undefined') {
 					: coi.coepCredentialless(),
 			});
 			if (reloadToDegrade) {
-				!coi.quiet && console.log('Reloading page to degrade COEP.');
+				consoleLog('Reloading page to degrade COEP.');
 				window.sessionStorage.setItem('coiReloadedBySelf', 'coepDegrade');
 				coi.doReload();
 			}
@@ -245,28 +255,28 @@ if (typeof window === 'undefined') {
 		// if (window.crossOriginIsolated !== false || !coi.shouldRegister()) return;
 
 		if (!window.isSecureContext) {
-			!coi.quiet && console.log('COOP/COEP Service Worker not registered, a secure context is required.');
+			consoleLog('COOP/COEP Service Worker not registered, a secure context is required.');
 			return;
 		}
 
 		// In some environments (e.g. Firefox private mode) this won't be available
 		if (!n.serviceWorker) {
-			!coi.quiet && console.error('COOP/COEP Service Worker not registered, perhaps due to private mode.');
+			consoleError('COOP/COEP Service Worker not registered, perhaps due to private mode.');
 			return;
 		}
 
 		const registration = await n.serviceWorker.register(window.document.currentScript.getAttribute('src'));
-		!coi.quiet && console.log('COOP/COEP Service Worker registered', registration.scope);
+		consoleLog('COOP/COEP Service Worker registered', registration.scope);
 
 		registration.addEventListener('updatefound', () => {
-			!coi.quiet && console.log('Reloading page to make use of updated COOP/COEP Service Worker.');
+			consoleLog('Reloading page to make use of updated COOP/COEP Service Worker.');
 			window.sessionStorage.setItem('coiReloadedBySelf', 'updatefound');
 			coi.doReload();
 		});
 
 		// If the registration is active, but it's not controlling the page
 		if (registration.active && !n.serviceWorker.controller) {
-			!coi.quiet && console.log('Reloading page to make use of COOP/COEP Service Worker.');
+			consoleLog('Reloading page to make use of COOP/COEP Service Worker.');
 			window.sessionStorage.setItem('coiReloadedBySelf', 'notControlling');
 			coi.doReload();
 		}
diff --git a/packages/default-plugins/build.ts b/packages/default-plugins/build.ts
index 2660116baad..8978ee71e37 100644
--- a/packages/default-plugins/build.ts
+++ b/packages/default-plugins/build.ts
@@ -4,6 +4,7 @@ const yargs = require('yargs');
 
 
 const build = () => {
+	// eslint-disable-next-line no-unused-expressions -- Old code before rule was applied
 	yargs
 		.usage('$0 <cmd> [args]')
 		// eslint-disable-next-line @typescript-eslint/no-explicit-any -- Old code before rule was applied
diff --git a/packages/lib/SyncTargetOneDrive.ts b/packages/lib/SyncTargetOneDrive.ts
index e434127e4a1..7ffe5841b8a 100644
--- a/packages/lib/SyncTargetOneDrive.ts
+++ b/packages/lib/SyncTargetOneDrive.ts
@@ -108,7 +108,11 @@ export default class SyncTargetOneDrive extends BaseSyncTarget {
 
 		if (!accountProperties) {
 			accountProperties = await api.execAccountPropertiesRequest();
-			context ? context.accountProperties = accountProperties : context = { accountProperties: accountProperties };
+			if (context) {
+				context.accountProperties = accountProperties;
+			} else {
+				context = { accountProperties: accountProperties };
+			}
 			Setting.setValue(`sync.${this.syncTargetId()}.context`, JSON.stringify(context));
 		}
 		api.setAccountProperties(accountProperties);
diff --git a/packages/lib/clipperUtils.ts b/packages/lib/clipperUtils.ts
index 327a045488d..351fb3e5c4f 100644
--- a/packages/lib/clipperUtils.ts
+++ b/packages/lib/clipperUtils.ts
@@ -139,4 +139,5 @@ export function getStyleSheets(doc: Document) {
 
 // Required to run in Firefox with tabs.executeScript. See
 // https://stackoverflow.com/a/44774834
+// eslint-disable-next-line no-unused-expressions -- Old code before rule was applied
 undefined;
diff --git a/packages/lib/services/e2ee/cryptoTestUtils.ts b/packages/lib/services/e2ee/cryptoTestUtils.ts
index 0c56f9311f5..795762e37d6 100644
--- a/packages/lib/services/e2ee/cryptoTestUtils.ts
+++ b/packages/lib/services/e2ee/cryptoTestUtils.ts
@@ -113,6 +113,7 @@ export async function testStringPerformance(method: EncryptionMethod, dataSize:
 			const deserialized = await Note.unserialize(serialized);
 			const decryptedNote = await Note.decrypt(deserialized);
 			const tick3 = performance.now();
+			// eslint-disable-next-line no-unused-expressions -- Old code before rule was applied
 			(decryptedNote.title === note.title);
 			encryptTime += tick2 - tick1;
 			decryptTime += tick3 - tick2;
diff --git a/packages/lib/services/ocr/OcrService.ts b/packages/lib/services/ocr/OcrService.ts
index a5fc22a416f..5b21641600d 100644
--- a/packages/lib/services/ocr/OcrService.ts
+++ b/packages/lib/services/ocr/OcrService.ts
@@ -135,7 +135,7 @@ export default class OcrService {
 					const result = await this.recognize(language, resource);
 					toSave.ocr_status = ResourceOcrStatus.Done;
 					toSave.ocr_text = filterOcrText(result.text);
-					toSave.ocr_details = Resource.serializeOcrDetails(result.lines),
+					toSave.ocr_details = Resource.serializeOcrDetails(result.lines);
 					toSave.ocr_error = '';
 				} catch (error) {
 					const errorMessage = typeof error === 'string' ? error : error?.message;
diff --git a/packages/lib/services/synchronizer/ItemUploader.test.ts b/packages/lib/services/synchronizer/ItemUploader.test.ts
index 7f46438803e..cecba80d263 100644
--- a/packages/lib/services/synchronizer/ItemUploader.test.ts
+++ b/packages/lib/services/synchronizer/ItemUploader.test.ts
@@ -117,7 +117,7 @@ describe('synchronizer/ItemUploader', () => {
 		expect(callRecorder.length).toBe(0);
 
 		await time.msleep(1);
-		notes[1] = await Note.save({ title: '22' }),
+		notes[1] = await Note.save({ title: '22' });
 		await itemUploader.serializeAndUploadItem(Note, BaseItem.systemPath(notes[1]), notes[1]);
 		expect(callRecorder.length).toBe(1);
 	}));
diff --git a/packages/lib/shim-init-node.ts b/packages/lib/shim-init-node.ts
index 2c0dec44a3e..4f50e8bdadb 100644
--- a/packages/lib/shim-init-node.ts
+++ b/packages/lib/shim-init-node.ts
@@ -465,7 +465,7 @@ function shimInit(options: ShimInitOptions = null) {
 		} else {
 			throw new Error('Unsupported method');
 		}
-	},
+	};
 
 	shim.imageFromDataUrl = async function(imageDataUrl, filePath, options = null) {
 		if (options === null) options = {};
diff --git a/packages/plugin-repo-cli/index.ts b/packages/plugin-repo-cli/index.ts
index cdeb93ad827..f8091d9c7d5 100644
--- a/packages/plugin-repo-cli/index.ts
+++ b/packages/plugin-repo-cli/index.ts
@@ -302,6 +302,7 @@ async function main() {
 		selectedCommandArgs = args;
 	}
 
+	// eslint-disable-next-line no-unused-expressions -- Old code before rule was applied
 	require('yargs')
 		.scriptName(scriptName)
 		.usage('$0 <cmd> [args]')
diff --git a/packages/server/src/routes/index/items.ts b/packages/server/src/routes/index/items.ts
index 8bdf61bab9f..4d122f52e78 100644
--- a/packages/server/src/routes/index/items.ts
+++ b/packages/server/src/routes/index/items.ts
@@ -68,7 +68,7 @@ router.get('items', async (_path: SubPath, ctx: AppContext) => {
 	};
 
 	const view: View = defaultView('items', 'Items');
-	view.content.itemTable = makeTableView(table),
+	view.content.itemTable = makeTableView(table);
 	view.content.postUrl = `${config().baseUrl}/items`;
 	view.cssFiles = ['index/items'];
 	return view;
diff --git a/packages/server/src/services/TaskService.test.ts b/packages/server/src/services/TaskService.test.ts
index 7c48b26b6f8..6b61641563b 100644
--- a/packages/server/src/services/TaskService.test.ts
+++ b/packages/server/src/services/TaskService.test.ts
@@ -65,7 +65,7 @@ describe('TaskService', () => {
 		const tasks = createDemoTasks();
 		tasks[0].run = async (_models: Models) => {
 			taskHasRan = true;
-		},
+		};
 		await service.registerTasks(tasks);
 		const taskId = tasks[0].id;
 
diff --git a/packages/tools/update-readme-contributors.ts b/packages/tools/update-readme-contributors.ts
index 8a1ddd44afa..4e9532d960c 100644
--- a/packages/tools/update-readme-contributors.ts
+++ b/packages/tools/update-readme-contributors.ts
@@ -8,8 +8,6 @@ interface Contributor {
 	html_url: string;
 }
 
-rootDir;
-
 const readmePath = `${rootDir}/README.md`;
 const { insertContentIntoFile } = require('./tool-utils.js');
 
diff --git a/packages/tools/website/processDocs.ts b/packages/tools/website/processDocs.ts
index db4e48c31e0..dbbe36a9c71 100644
--- a/packages/tools/website/processDocs.ts
+++ b/packages/tools/website/processDocs.ts
@@ -159,13 +159,13 @@ const processToken = (token: any, output: string[], context: Context): void => {
 		context.inFence = true;
 		content.push(`\`\`\`${token.info || ''}\n`);
 	} else if (type === 'html_block') {
-		contentProcessed = true,
+		contentProcessed = true;
 		content.push(parseHtml(token.content.trim()));
 	} else if (type === 'html_inline') {
-		contentProcessed = true,
+		contentProcessed = true;
 		content.push(parseHtml(token.content.trim()));
 	} else if (type === 'code_inline') {
-		contentProcessed = true,
+		contentProcessed = true;
 		content.push(`\`${token.content}\``);
 	} else if (type === 'code_block') {
 		contentProcessed = true;