From 9aab641417bd2aa0537b31f69b4e10bd54797a44 Mon Sep 17 00:00:00 2001
From: undefined <i@undefined.moe>
Date: Wed, 16 Mar 2022 22:00:20 +0800
Subject: [PATCH] core: fix old format import

---
 packages/hydrooj/package.json          | 2 +-
 packages/hydrooj/src/handler/import.ts | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index fff9edfc2..81ae50540 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.9.5",
+    "version": "3.9.6",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/handler/import.ts b/packages/hydrooj/src/handler/import.ts
index b726fc93f..ff6704134 100644
--- a/packages/hydrooj/src/handler/import.ts
+++ b/packages/hydrooj/src/handler/import.ts
@@ -15,6 +15,7 @@ function findOverrideContent(dir: string) {
     if (files.includes('problem.md')) return fs.readFileSync(path.join(dir, 'problem.md'), 'utf8');
     const languages = {};
     files = files.filter((i) => /^problem_[a-zA-Z_]+\.md$/.test(i));
+    if (!files.length) return null;
     for (const file of files) {
         const lang = file.slice(8, -3);
         languages[lang] = fs.readFileSync(path.join(dir, file), 'utf8');