fix: fix issue #162

pointer/pointer.go

@@ -4,7 +4,9 @@
 // Package pointer contains some util functions to operate go pointer.
 package pointer
 
-import "reflect"
+import (
+	"reflect"
+)
 
 // Of returns a pointer to the value `v`.
 // Play: https://go.dev/play/p/HFd70x4DrMj
@@ -47,5 +49,10 @@ func ExtractPointer(value any) any {
 	if t.Kind() != reflect.Pointer {
 		return value
 	}
-	return ExtractPointer(v.Elem().Interface())
+
+	if v.Elem().IsValid() {
+		return ExtractPointer(v.Elem().Interface())
+	}
+
+	return nil
 }