1 files changed, 29 insertions, 0 deletions
diff --git a/packages/demobank-ui/src/pages/ShowInputErrorLabel.tsx b/packages/demobank-ui/src/pages/ShowInputErrorLabel.tsx
new file mode 100644
index 000000000..dacffe20a
--- /dev/null
+++ b/packages/demobank-ui/src/pages/ShowInputErrorLabel.tsx
@@ -0,0 +1,29 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import { Fragment, h, VNode } from "preact";
+
+export function ShowInputErrorLabel({
+  isDirty,
+  message,
+}: {
+  message: string | undefined;
+  isDirty: boolean;
+}): VNode {
+  if (message && isDirty)
+    return <div style={{ marginTop: 8, color: "red" }}>{message}</div>;
+  return <Fragment />;
+}