From 6c8d979668f87913a1903617d0ba1c9d3311ee34 Mon Sep 17 00:00:00 2001
From: Fuad Hasan <fuad.cs22@gmail.com>
Date: Mon, 3 Feb 2025 03:22:43 +0600
Subject: [PATCH] add nil pointer check

---
 d2cli/export.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/d2cli/export.go b/d2cli/export.go
index dd3e5c54d..602cfd675 100644
--- a/d2cli/export.go
+++ b/d2cli/export.go
@@ -24,7 +24,7 @@ var STDOUT_FORMAT_MAP = map[string]exportExtension{
 var SUPPORTED_STDOUT_FORMATS = []string{"png", "svg"}
 
 func getOutputFormat(stdoutFormatFlag *string, outputPath string) (exportExtension, error) {
-	if *stdoutFormatFlag != "" {
+	if stdoutFormatFlag != nil && *stdoutFormatFlag != "" {
 		format := strings.ToLower(*stdoutFormatFlag)
 		if ext, ok := STDOUT_FORMAT_MAP[format]; ok {
 			return ext, nil