From 6c89be9c1b97da0179f4595689fddfa587bc2509 Mon Sep 17 00:00:00 2001
From: Pionxzh <spigbbbbb@gmail.com>
Date: Mon, 17 Jun 2024 14:22:06 +0800
Subject: [PATCH] fix: handle empty dataUrl

---
 src/exporter/image.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/exporter/image.ts b/src/exporter/image.ts
index ca3920d..5349fb6 100644
--- a/src/exporter/image.ts
+++ b/src/exporter/image.ts
@@ -144,7 +144,7 @@ export async function exportToPng(fileNameFormat: string) {
          * Chromium will not throw,  we can only get an empty canvas
          * Firefox will throw "DOMException: CanvasRenderingContext2D.scale: Canvas exceeds max size."
          */
-        if (!canvas || dataUrl === 'data:,') {
+        if (!canvas || !dataUrl || dataUrl === 'data:,') {
             if (currentPass > passLimit) return null
 
             // 1.4 ^ 5 ~= 5.37, should be enough for most cases