diff --git a/packages/hydrojudge/src/hosts/vj4.ts b/packages/hydrojudge/src/hosts/vj4.ts
index 0db5ef580..1fa407f3a 100644
--- a/packages/hydrojudge/src/hosts/vj4.ts
+++ b/packages/hydrojudge/src/hosts/vj4.ts
@@ -4,6 +4,7 @@ import axios from 'axios';
 import AdmZip from 'adm-zip';
 import fs from 'fs-extra';
 import WebSocket from 'ws';
+import { noop } from 'lodash';
 import * as tmpfs from '../tmpfs';
 import log from '../log';
 import { compilerText, Queue } from '../utils';
@@ -99,7 +100,7 @@ class JudgeTask {
                 });
             }
         }
-        for (const clean of this.clean) await clean().catch();
+        for (const clean of this.clean) await clean().catch(noop);
         tmpfs.umount(this.tmpdir);
         fs.removeSync(this.tmpdir);
     }
@@ -257,7 +258,7 @@ export default class VJ4 {
                 });
             });
             await fs.unlink(tmpFilePath);
-            await this.processData(savePath).catch();
+            await this.processData(savePath).catch(noop);
         } catch (e) {
             if (retry) await this.problemData(domainId, pid, savePath, retry - 1);
             else throw e;
diff --git a/packages/hydrojudge/src/judge/default.ts b/packages/hydrojudge/src/judge/default.ts
index f0ff7154a..be4d54bb0 100644
--- a/packages/hydrojudge/src/judge/default.ts
+++ b/packages/hydrojudge/src/judge/default.ts
@@ -63,7 +63,6 @@ function judgeCase(c) {
                 });
             }
         } else if (status === STATUS.STATUS_RUNTIME_ERROR && code) {
-            status = STATUS.STATUS_RUNTIME_ERROR;
             if (code < 32) message = signals[code];
             else message = `您的程序返回了 ${code}.`;
         }
diff --git a/packages/hydrojudge/src/sandbox.ts b/packages/hydrojudge/src/sandbox.ts
index bda6a2485..3111b1fa4 100644
--- a/packages/hydrojudge/src/sandbox.ts
+++ b/packages/hydrojudge/src/sandbox.ts
@@ -20,7 +20,7 @@ const statusMap = {
 };
 
 function proc({
-    execute = null,
+    execute = '',
     time_limit_ms = 16000,
     memory_limit_mb = 1024,
     process_limit = 32,
diff --git a/packages/hydrojudge/src/service.ts b/packages/hydrojudge/src/service.ts
index 3c7842732..0cacac048 100644
--- a/packages/hydrojudge/src/service.ts
+++ b/packages/hydrojudge/src/service.ts
@@ -6,6 +6,7 @@ import { ObjectID } from 'bson';
 import fs from 'fs-extra';
 import { homedir, tmpdir } from 'os';
 import AdmZip from 'adm-zip';
+import { noop } from 'lodash';
 
 declare module 'hydrooj/dist/interface' {
     interface SystemKeys {
@@ -83,7 +84,7 @@ async function postInit() {
             });
         });
         await fs.unlink(tmpFilePath);
-        await processData(savePath).catch();
+        await processData(savePath).catch(noop);
         return savePath;
     }
 
@@ -239,7 +240,7 @@ async function postInit() {
                 }
             }
             // eslint-disable-next-line no-await-in-loop
-            for (const clean of this.clean) await clean().catch();
+            for (const clean of this.clean) await clean().catch(noop);
             tmpfs.umount(this.tmpdir);
             fs.removeSync(this.tmpdir);
         }
diff --git a/packages/hydrojudge/src/sysinfo.ts b/packages/hydrojudge/src/sysinfo.ts
index 0dc97495b..ab863d92a 100644
--- a/packages/hydrojudge/src/sysinfo.ts
+++ b/packages/hydrojudge/src/sysinfo.ts
@@ -2,6 +2,7 @@ import path from 'path';
 import fs from 'fs-extra';
 import systeminformation from 'systeminformation';
 import { tmpdir } from 'os';
+import { noop } from 'lodash';
 import { judge } from './judge/run';
 import * as tmpfs from './tmpfs';
 
@@ -49,7 +50,7 @@ int main(){
         tmpfs.mount(context.tmpdir, '64m');
         await judge(context).catch((e) => console.error(e));
         // eslint-disable-next-line no-await-in-loop
-        for (const clean of context.clean) await clean().catch();
+        for (const clean of context.clean) await clean().catch(noop);
         tmpfs.umount(context.tmpdir);
         fs.removeSync(context.tmpdir);
     } catch (e) {
diff --git a/packages/hydrojudge/src/utils.ts b/packages/hydrojudge/src/utils.ts
index ecec18ac0..ba8934f57 100644
--- a/packages/hydrojudge/src/utils.ts
+++ b/packages/hydrojudge/src/utils.ts
@@ -13,6 +13,8 @@ const EMPTY_STR = /^[ \r\n\t]*$/i;
 
 export const cmd = parse;
 
+export function noop() { }
+
 export function parseTimeMS(str: string) {
     const match = TIME_RE.exec(str);
     if (!match) throw new FormatError(str, ['error parsing time']);
diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index c0ec4879f..e940ef06d 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -323,8 +323,8 @@ export class ProblemPretestConnectionHandler extends ConnectionHandler {
     @param('pid', Types.String)
     async prepare(domainId: string, pid: string) {
         const pdoc = await problem.get(domainId, pid);
-        if (pdoc.hidden) this.checkPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN);
         if (!pdoc) throw new ProblemNotFoundError(domainId, pid);
+        if (pdoc.hidden) this.checkPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN);
         this.pid = pdoc.docId.toString();
         this.domainId = domainId;
         this.dispose = bus.on('record/change', this.onRecordChange.bind(this));
diff --git a/packages/hydrooj/src/interface.ts b/packages/hydrooj/src/interface.ts
index 77c151a8c..9a150f214 100644
--- a/packages/hydrooj/src/interface.ts
+++ b/packages/hydrooj/src/interface.ts
@@ -1,8 +1,7 @@
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-import { Readable, Writable } from 'stream';
-import { ObjectID } from 'mongodb';
-import fs from 'fs';
-import { Dictionary, NumericDictionary } from 'lodash';
+import type { Readable, Writable } from 'stream';
+import type { ObjectID } from 'mongodb';
+import type fs from 'fs';
+import type { Dictionary, NumericDictionary } from 'lodash';
 import type { Pdoc } from './model/problem';
 
 type document = typeof import('./model/document');
diff --git a/packages/hydrooj/src/model/file.ts b/packages/hydrooj/src/model/file.ts
index cfa514aec..04623368f 100644
--- a/packages/hydrooj/src/model/file.ts
+++ b/packages/hydrooj/src/model/file.ts
@@ -55,8 +55,8 @@ export async function getWithSecret(_id: ObjectID, secret: string, reject?: Func
     const file = await coll.findOne({ _id });
     if (!file) throw new NotFoundError(_id);
     const timestamp = _timestamp();
-    if (!(hash(file.secret, timestamp.toString()) === secret)) {
-        if (!(hash(file.secret, (timestamp - 1).toString()) === secret)) {
+    if (hash(file.secret, timestamp.toString()) !== secret) {
+        if (hash(file.secret, (timestamp - 1).toString()) !== secret) {
             throw new ForbiddenError();
         }
     }
diff --git a/packages/hydrooj/src/model/record.ts b/packages/hydrooj/src/model/record.ts
index ef8a27e29..f656f613d 100644
--- a/packages/hydrooj/src/model/record.ts
+++ b/packages/hydrooj/src/model/record.ts
@@ -61,7 +61,7 @@ export async function judge(domainId: string, rid: ObjectID) {
     if (rdoc.pid) {
         const pdoc = await problem.get(domainId, rdoc.pid);
         if (!config) config = pdoc?.config || {};
-        data = pdoc.data;
+        data = pdoc?.data;
     }
     delete rdoc._id;
     await task.add({
diff --git a/packages/hydrooj/src/model/user.ts b/packages/hydrooj/src/model/user.ts
index 006acb82c..86f0fa41f 100644
--- a/packages/hydrooj/src/model/user.ts
+++ b/packages/hydrooj/src/model/user.ts
@@ -129,7 +129,7 @@ export class User implements _User {
     checkPassword(password: string) {
         const h = global.Hydro.lib[`hash.${this.hashType}`];
         if (!h) throw new Error('Unknown hash method');
-        if (!(h(password, this.salt(), this) === this.hash())) {
+        if (h(password, this.salt(), this) !== this.hash()) {
             throw new LoginError(this.uname);
         } else if (this.hashType !== 'hydro') {
             setPassword(this._id, password);
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index 77c731c50..aa1d1bd27 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -440,8 +440,7 @@ export class Handler {
                 args.domainId = args.domainId || this.domainId;
             }
             const { anchor } = args;
-            if (query) res = router.url(name, args, { query });
-            else res = router.url(name, args);
+            res = router.url(name, args, { query });
             if (anchor) return `${res}#${anchor}`;
         } catch (e) {
             console.error(e.message);
@@ -563,10 +562,8 @@ export class Handler {
             this.ctx.response.status = 302;
             this.ctx.redirect(this.response.redirect);
         } else {
-            if (this.response.body != null) {
-                this.ctx.response.body = this.response.body;
-                this.ctx.response.status = this.response.status || 200;
-            }
+            this.ctx.response.body = this.response.body;
+            this.ctx.response.status = this.response.status || 200;
             this.ctx.response.type = this.request.json
                 ? 'application/json'
                 : this.response.type
@@ -683,7 +680,7 @@ const Checker = (permPrivChecker) => {
         if (typeof item === 'object') {
             if (typeof item.call !== 'undefined') {
                 checker = item;
-            } if (typeof item[0] === 'number') {
+            } else if (typeof item[0] === 'number') {
                 priv = item;
             } else if (typeof item[0] === 'bigint') {
                 perm = item;
@@ -772,18 +769,22 @@ export class ConnectionHandler {
     url(name: string, kwargs: any = {}) {
         let res = '#';
         const args: any = {};
+        const query: any = {};
         for (const key in kwargs) {
             if (kwargs[key] instanceof ObjectID) args[key] = kwargs[key].toHexString();
             else args[key] = kwargs[key].toString();
         }
+        for (const key in kwargs.query || {}) {
+            if (query[key] instanceof ObjectID) query[key] = kwargs.query[key].toHexString();
+            else query[key] = kwargs.query[key].toString();
+        }
         try {
             if (this.args.domainId !== 'system' || args.domainId) {
                 name += '_with_domainId';
                 args.domainId = args.domainId || this.args.domainId;
             }
-            const { anchor, query } = args;
-            if (query) res = router.url(name, args, { query });
-            else res = router.url(name, args);
+            const { anchor } = args;
+            res = router.url(name, args, { query });
             if (anchor) return `${res}#${anchor}`;
         } catch (e) {
             console.error(e.message);
diff --git a/packages/migrate-vijos/script.ts b/packages/migrate-vijos/script.ts
index 048687624..06f038b0b 100644
--- a/packages/migrate-vijos/script.ts
+++ b/packages/migrate-vijos/script.ts
@@ -401,7 +401,7 @@ async function message(src: Db, report: Function) {
     }
 }
 
-async function removeInvalidPid(src: Db, report: Function) {
+async function removeInvalidPid(report: Function) {
     const count = await dst.collection('document').find({ docType: 10 }).count();
     const bulk = dst.collection('document').initializeUnorderedBulkOp();
     await report({ progress: 1, message: `Remove pid: ${count}` });
@@ -550,7 +550,7 @@ export async function run({
     await discussionNode(src, report);
     await message(src, report);
     await userfileUsage(src, report);
-    await removeInvalidPid(src, report);
+    await removeInvalidPid(report);
     return true;
 }