From 5b7d9d343de641547d81a578353938fcd0534848 Mon Sep 17 00:00:00 2001
From: kv1sidisi <lyapunovvadim5002@gmail.com>
Date: Tue, 9 Jun 2026 12:21:31 +0300
Subject: [PATCH] fix: handle nil jsonpointer sources

---
 jsonpointer/jsonpointer.go      | 3 +++
 jsonpointer/jsonpointer_test.go | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/jsonpointer/jsonpointer.go b/jsonpointer/jsonpointer.go
index 042ee0bb..3abb7d02 100644
--- a/jsonpointer/jsonpointer.go
+++ b/jsonpointer/jsonpointer.go
@@ -127,6 +127,9 @@ func getTarget(source any, currentPart navigationPart, stack []navigationPart, c
 	}
 
 	sourceType := reflect.TypeOf(source)
+	if sourceType == nil {
+		return nil, nil, ErrNotFound.Wrap(fmt.Errorf("source is nil at %s", currentPath))
+	}
 	sourceElemType := sourceType
 
 	if sourceType.Kind() == reflect.Ptr {
diff --git a/jsonpointer/jsonpointer_test.go b/jsonpointer/jsonpointer_test.go
index e49fd04b..5852e2d2 100644
--- a/jsonpointer/jsonpointer_test.go
+++ b/jsonpointer/jsonpointer_test.go
@@ -367,6 +367,14 @@ func TestGetTarget_Error(t *testing.T) {
 			},
 			wantErr: errors.New("not found -- slice is nil at /0"),
 		},
+		{
+			name: "nil source",
+			args: args{
+				source:  nil,
+				pointer: JSONPointer("/key1"),
+			},
+			wantErr: errors.New("not found -- source is nil at /key1"),
+		},
 		{
 			name: "nil struct",
 			args: args{