diff --git a/packages/hydrooj/src/handler/import.syzoj.ts b/packages/hydrooj/src/handler/import.syzoj.ts
index 96ab96e33..4531d231b 100644
--- a/packages/hydrooj/src/handler/import.syzoj.ts
+++ b/packages/hydrooj/src/handler/import.syzoj.ts
@@ -7,7 +7,6 @@ import { filter } from 'lodash';
 import { PassThrough } from 'stream';
 import AdmZip from 'adm-zip';
 import { ValidationError, RemoteOnlineJudgeError } from '../error';
-import { streamToBuffer } from '../utils';
 import { Logger } from '../logger';
 import type { ContentNode } from '../interface';
 import * as problem from '../model/problem';
diff --git a/packages/hydrooj/src/ui.ts b/packages/hydrooj/src/ui.ts
index 73042abe9..a15160b4e 100644
--- a/packages/hydrooj/src/ui.ts
+++ b/packages/hydrooj/src/ui.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-shadow */
 // @ts-nocheck
 import cluster from 'cluster';
 import {