diff --git a/blocksuite/affine/widgets/drag-handle/src/helpers/preview-helper.ts b/blocksuite/affine/widgets/drag-handle/src/helpers/preview-helper.ts
index 6162a01cb1..54f14fa98c 100644
--- a/blocksuite/affine/widgets/drag-handle/src/helpers/preview-helper.ts
+++ b/blocksuite/affine/widgets/drag-handle/src/helpers/preview-helper.ts
@@ -114,6 +114,7 @@ export class PreviewHelper {
     });
 
     let width: number = 500;
+    // oxlint-disable-next-line no-unassigned-vars
     let height;
 
     const noteBlock = this.widget.host.querySelector('affine-note');
diff --git a/packages/backend/server/src/__tests__/copilot-provider.spec.ts b/packages/backend/server/src/__tests__/copilot-provider.spec.ts
index 25d78264da..3fb35df7fe 100644
--- a/packages/backend/server/src/__tests__/copilot-provider.spec.ts
+++ b/packages/backend/server/src/__tests__/copilot-provider.spec.ts
@@ -732,7 +732,7 @@ for (const {
                 [
                   ...prompt.finish(
                     messages.reduce(
-                      // @ts-expect-error
+                      // @ts-expect-error params not typed
                       (acc, m) => Object.assign(acc, m.params),
                       {}
                     )
@@ -802,7 +802,7 @@ for (const {
                 [
                   ...prompt.finish(
                     finalMessage.reduce(
-                      // @ts-expect-error
+                      // @ts-expect-error params not typed
                       (acc, m) => Object.assign(acc, m.params),
                       params
                     )
diff --git a/packages/backend/server/src/__tests__/copilot.e2e.ts b/packages/backend/server/src/__tests__/copilot.e2e.ts
index 752bd0ac85..34edcf8282 100644
--- a/packages/backend/server/src/__tests__/copilot.e2e.ts
+++ b/packages/backend/server/src/__tests__/copilot.e2e.ts
@@ -111,7 +111,7 @@ test.before(async t => {
       m.overrideProvider(OpenAIProvider).useClass(MockCopilotProvider);
       m.overrideProvider(GeminiGenerativeProvider).useClass(
         class MockGenerativeProvider extends MockCopilotProvider {
-          // @ts-expect-error
+          // @ts-expect-error type not typed
           override type: CopilotProviderType = CopilotProviderType.Gemini;
         }
       );
diff --git a/packages/backend/server/src/__tests__/copilot.spec.ts b/packages/backend/server/src/__tests__/copilot.spec.ts
index 180d847358..d9fe4a9ca3 100644
--- a/packages/backend/server/src/__tests__/copilot.spec.ts
+++ b/packages/backend/server/src/__tests__/copilot.spec.ts
@@ -411,7 +411,7 @@ test('should be able to fork chat session', async t => {
 
   // fork session
   const s1 = (await session.get(sessionId))!;
-  // @ts-expect-error
+  // @ts-expect-error find maybe return undefined
   const latestMessageId = s1.finish({}).find(m => m.role === 'assistant')!.id;
   const forkedSessionId1 = await session.fork({
     userId,
diff --git a/packages/backend/server/src/__tests__/models/feature-user.spec.ts b/packages/backend/server/src/__tests__/models/feature-user.spec.ts
index 890f0e199f..30f9a5525c 100644
--- a/packages/backend/server/src/__tests__/models/feature-user.spec.ts
+++ b/packages/backend/server/src/__tests__/models/feature-user.spec.ts
@@ -125,7 +125,7 @@ test('should not switch user quota if the new quota is the same as the current o
 });
 
 test('should use pro plan as free for selfhost instance', async t => {
-  // @ts-expect-error
+  // @ts-expect-error DEPLOYMENT_TYPE is readonly
   env.DEPLOYMENT_TYPE = 'selfhosted';
   await using module = await createTestingModule();
 
diff --git a/packages/backend/server/src/__tests__/utils/testing-module.ts b/packages/backend/server/src/__tests__/utils/testing-module.ts
index c37e9589bb..242a7ae695 100644
--- a/packages/backend/server/src/__tests__/utils/testing-module.ts
+++ b/packages/backend/server/src/__tests__/utils/testing-module.ts
@@ -66,7 +66,7 @@ export async function createTestingModule(
   // setting up
   let imports = moduleDef.imports ?? [buildAppModule(globalThis.env)];
   imports =
-    // @ts-expect-error
+    // @ts-expect-error ignore the type error
     imports[0].module?.name === 'AppModule'
       ? imports
       : dedupeModules([
diff --git a/packages/common/infra/src/orm/core/__tests__/yjs.spec.ts b/packages/common/infra/src/orm/core/__tests__/yjs.spec.ts
index ac46f4d472..cb0bc4c7d8 100644
--- a/packages/common/infra/src/orm/core/__tests__/yjs.spec.ts
+++ b/packages/common/infra/src/orm/core/__tests__/yjs.spec.ts
@@ -493,19 +493,19 @@ describe('ORM entity CRUD', () => {
 
     expect(() => {
       client.users.create({
-        // @ts-expect-error
+        // @ts-expect-error ignore the type error
         name: null,
       });
     }).toThrowError("Field 'name' is required but not set.");
 
     expect(() => {
-      // @ts-expect-error
+      // @ts-expect-error ignore the type error
       client.users.create({});
     }).toThrowError("Field 'name' is required but not set.");
 
     expect(() => {
       client.users.update(1, {
-        // @ts-expect-error
+        // @ts-expect-error ignore the type error
         name: null,
       });
     }).toThrowError("Field 'name' is required but not set.");
diff --git a/tests/affine-cloud/e2e/page-history.spec.ts b/tests/affine-cloud/e2e/page-history.spec.ts
index 2cf2677c2a..f9fb180d96 100644
--- a/tests/affine-cloud/e2e/page-history.spec.ts
+++ b/tests/affine-cloud/e2e/page-history.spec.ts
@@ -57,11 +57,11 @@ test('newly created page shows empty history', async ({ page }) => {
 
 const pushCurrentPageUpdates = async (page: Page) => {
   const [workspaceId, guid, updates, state] = await page.evaluate(() => {
-    // @ts-expect-error
+    // @ts-expect-error ignore the type error
     const Y = window.Y;
-    // @ts-expect-error
+    // @ts-expect-error ignore the type error
     const spaceDoc = window.currentEditor.page.spaceDoc;
-    // @ts-expect-error
+    // @ts-expect-error ignore the type error
     const workspaceId: string = window.currentWorkspace.id;
     const updates: Uint8Array = Y.encodeStateAsUpdate(spaceDoc);
     const state: Uint8Array = Y.encodeStateVector(spaceDoc);
diff --git a/tests/kit/src/playwright.ts b/tests/kit/src/playwright.ts
index a259a746e8..b9b120b62e 100644
--- a/tests/kit/src/playwright.ts
+++ b/tests/kit/src/playwright.ts
@@ -77,7 +77,7 @@ export const test = baseTest.extend<{
     if (enableCoverage) {
       await context.addInitScript(() =>
         window.addEventListener('beforeunload', () =>
-          // @ts-expect-error
+          // @ts-expect-error window.__coverage__ is not typed
           window.collectIstanbulCoverage(JSON.stringify(window.__coverage__))
         )
       );
@@ -103,7 +103,7 @@ export const test = baseTest.extend<{
     if (enableCoverage) {
       for (const page of context.pages()) {
         await page.evaluate(() =>
-          // @ts-expect-error
+          // @ts-expect-error window.__coverage__ is not typed
           window.collectIstanbulCoverage(JSON.stringify(window.__coverage__))
         );
       }