local error impl: errors shown fixed position that are wiped when moved from the view

1 files changed, 22 insertions, 0 deletions

diff --git a/packages/taler-util/src/taleruri.ts b/packages/taler-util/src/taleruri.ts
index 9568636b8..cf5d3f413 100644
--- a/packages/taler-util/src/taleruri.ts
+++ b/packages/taler-util/src/taleruri.ts
@@ -14,6 +14,7 @@
  GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
  */
 
+import { Codec, Context, DecodingError, renderContext } from "./codec.js";
 import { canonicalizeBaseUrl } from "./helpers.js";
 import { AmountString } from "./taler-types.js";
 import { URLSearchParams, URL } from "./url.js";
@@ -32,6 +33,27 @@ export type TalerUri =
   | WithdrawExchangeUri
   | AuditorUri;
 
+declare const __action_str: unique symbol;
+export type TalerActionString = string & { [__action_str]: true };
+
+export function codecForTalerActionString(): Codec<TalerActionString> {
+  return {
+    decode(x: any, c?: Context): TalerActionString {
+      if (typeof x !== "string") {
+        throw new DecodingError(
+          `expected string at ${renderContext(c)} but got ${typeof x}`,
+        );
+      }
+      if (parseTalerUri(x) === undefined) {
+        throw new DecodingError(
+          `invalid taler action at ${renderContext(c)} but got "${x}"`,
+        );
+      }
+      return x as TalerActionString;
+    },
+  };
+}
+
 export interface PayUriResult {
   type: TalerUriAction.Pay;
   merchantBaseUrl: string;