From dfecef5c34adc188c45d7e298939309121955987 Mon Sep 17 00:00:00 2001
From: JacobLinCool <jacoblin2011@gmail.com>
Date: Fri, 25 Jun 2021 01:04:13 +0800
Subject: [PATCH] fix: return "" instead of return undefined (#1133)

the function renderGradient may return  undefined if colors.bgColor !== "object"

which may render "undefined" into svg
---
 src/common/Card.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common/Card.js b/src/common/Card.js
index 3b5686e..520560f 100644
--- a/src/common/Card.js
+++ b/src/common/Card.js
@@ -94,7 +94,7 @@ class Card {
   }
 
   renderGradient() {
-    if (typeof this.colors.bgColor !== "object") return;
+    if (typeof this.colors.bgColor !== "object") return "";
 
     const gradients = this.colors.bgColor.slice(1);
     return typeof this.colors.bgColor === "object"