2 files changed, 16 insertions, 1 deletions
diff --git a/packages/taler-util/src/amounts.ts b/packages/taler-util/src/amounts.ts
index 5a8c7f06f..41fd14bee 100644
--- a/packages/taler-util/src/amounts.ts
+++ b/packages/taler-util/src/amounts.ts
@@ -349,7 +349,8 @@ export class Amounts {
     }
   }
 
-  static mult(a: AmountJson, n: number): Result {
+  static mult(a: AmountLike, n: number): Result {
+    a = this.jsonifyAmount(a);
     if (!Number.isInteger(n)) {
       throw Error("amount can only be multipied by an integer");
     }
diff --git a/packages/taler-util/src/time.ts b/packages/taler-util/src/time.ts
index c0858ada6..856db8a57 100644
--- a/packages/taler-util/src/time.ts
+++ b/packages/taler-util/src/time.ts
@@ -69,6 +69,20 @@ export function getDurationRemaining(
   return { d_ms: deadline.t_ms - now.t_ms };
 }
 
+export namespace Duration {
+  export const getRemaining = getDurationRemaining;
+  export function toIntegerYears(d: Duration): number {
+    if (typeof d.d_ms !== "number") {
+      throw Error("infinite duration");
+    }
+    return Math.ceil(d.d_ms / 1000 / 60 / 60 / 24 / 365);
+  }
+}
+
+export namespace Timestamp {
+  export const min = timestampMin;
+}
+
 export function timestampMin(t1: Timestamp, t2: Timestamp): Timestamp {
   if (t1.t_ms === "never") {
     return { t_ms: t2.t_ms };