From 30710cdbfba746c66e229c50ec21c0c56a8ff7de Mon Sep 17 00:00:00 2001
From: undefined <i@undefined.moe>
Date: Tue, 20 Apr 2021 00:38:44 +0800
Subject: [PATCH] core: optional input

---
 packages/hydrooj/package.json      | 2 +-
 packages/hydrooj/src/lib/avatar.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index d61e920e4..98914e280 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.23.7",
+    "version": "2.23.8",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/lib/avatar.ts b/packages/hydrooj/src/lib/avatar.ts
index d2bc6c528..feadf552c 100644
--- a/packages/hydrooj/src/lib/avatar.ts
+++ b/packages/hydrooj/src/lib/avatar.ts
@@ -9,7 +9,7 @@ export const providers: Record<string, AvatarProvider> = {
 };
 
 function avatar(src: string, size = 64) {
-    const index = src.indexOf(':');
+    const index = (src || '').indexOf(':');
     if (index === -1) return providers.gravatar('', size);
     const [provider, str] = [src.substr(0, index), src.substr(index + 1, src.length)];
     if (!providers[provider] || !str) return providers.gravatar('', size);