From 768838285c25cbb1b171f645e8efb37a3c14273a Mon Sep 17 00:00:00 2001
From: Sebastian <sebasjm@gmail.com>
Date: Mon, 30 Oct 2023 15:27:25 -0300
Subject: local error impl: errors shown fixed position that are wiped when
 moved from the view

---
 packages/taler-util/src/amounts.ts | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'packages/taler-util/src/amounts.ts')

diff --git a/packages/taler-util/src/amounts.ts b/packages/taler-util/src/amounts.ts
index 082a8168e..5c6444b00 100644
--- a/packages/taler-util/src/amounts.ts
+++ b/packages/taler-util/src/amounts.ts
@@ -26,6 +26,9 @@ import {
   codecForString,
   codecForNumber,
   Codec,
+  Context,
+  DecodingError,
+  renderContext,
 } from "./codec.js";
 import { AmountString } from "./taler-types.js";
 
@@ -74,7 +77,23 @@ export const codecForAmountJson = (): Codec<AmountJson> =>
     .property("fraction", codecForNumber())
     .build("AmountJson");
 
-export const codecForAmountString = (): Codec<AmountString> => codecForString() as Codec<AmountString>;
+export function codecForAmountString(): Codec<AmountString> {
+  return {
+    decode(x: any, c?: Context): AmountString {
+      if (typeof x !== "string") {
+        throw new DecodingError(
+          `expected string at ${renderContext(c)} but got ${typeof x}`,
+        );
+      }
+      if (Amounts.parse(x) === undefined) {
+        throw new DecodingError(
+          `invalid amount at ${renderContext(c)} got "${x}"`,
+        );
+      }
+      return x as AmountString;
+    },
+  };
+}
 
 /**
  * Result of a possibly overflowing operation.
-- 
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