1 files changed, 25 insertions, 26 deletions

diff --git a/packages/taler-wallet-core/src/common.ts b/packages/taler-wallet-core/src/common.ts
index 755c46188..00d462d6f 100644
--- a/packages/taler-wallet-core/src/common.ts
+++ b/packages/taler-wallet-core/src/common.ts
@@ -121,7 +121,7 @@ export async function makeCoinAvailable(
     coinRecord.exchangeBaseUrl,
     coinRecord.denomPubHash,
   ]);
-  checkDbInvariant(!!denom);
+  checkDbInvariant(!!denom, `denomination of a coin is missing hash: ${coinRecord.denomPubHash}`);
   const ageRestriction = coinRecord.maxAge;
   let car = await tx.coinAvailability.get([
     coinRecord.exchangeBaseUrl,
@@ -175,13 +175,13 @@ export async function spendCoins(
       coin.exchangeBaseUrl,
       coin.denomPubHash,
     );
-    checkDbInvariant(!!denom);
+    checkDbInvariant(!!denom, `denomination of a coin is missing hash: ${coin.denomPubHash}`);
     const coinAvailability = await tx.coinAvailability.get([
       coin.exchangeBaseUrl,
       coin.denomPubHash,
       coin.maxAge,
     ]);
-    checkDbInvariant(!!coinAvailability);
+    checkDbInvariant(!!coinAvailability, `age denom info is missing for ${coin.maxAge}`);
     const contrib = csi.contributions[i];
     if (coin.status !== CoinStatus.Fresh) {
       const alloc = coin.spendAllocation;
@@ -213,7 +213,6 @@ export async function spendCoins(
       amount: Amounts.stringify(remaining.amount),
       coinPub: coin.coinPub,
     });
-    checkDbInvariant(!!coinAvailability);
     if (coinAvailability.freshCoinCount === 0) {
       throw Error(
         `invalid coin count ${coinAvailability.freshCoinCount} in DB`,
@@ -558,6 +557,28 @@ export function getAutoRefreshExecuteThreshold(d: {
 }
 
 /**
+ * Type and schema definitions for pending tasks in the wallet.
+ *
+ * These are only used internally, and are not part of the stable public
+ * interface to the wallet.
+ */
+
+export enum PendingTaskType {
+  ExchangeUpdate = "exchange-update",
+  Purchase = "purchase",
+  Refresh = "refresh",
+  Recoup = "recoup",
+  RewardPickup = "reward-pickup",
+  Withdraw = "withdraw",
+  Deposit = "deposit",
+  Backup = "backup",
+  PeerPushDebit = "peer-push-debit",
+  PeerPullCredit = "peer-pull-credit",
+  PeerPushCredit = "peer-push-credit",
+  PeerPullDebit = "peer-pull-debit",
+}
+
+/**
  * Parsed representation of task identifiers.
  */
 export type ParsedTaskIdentifier =
@@ -747,28 +768,6 @@ export interface TransactionContext {
   deleteTransaction(): Promise<void>;
 }
 
-/**
- * Type and schema definitions for pending tasks in the wallet.
- *
- * These are only used internally, and are not part of the stable public
- * interface to the wallet.
- */
-
-export enum PendingTaskType {
-  ExchangeUpdate = "exchange-update",
-  Purchase = "purchase",
-  Refresh = "refresh",
-  Recoup = "recoup",
-  RewardPickup = "reward-pickup",
-  Withdraw = "withdraw",
-  Deposit = "deposit",
-  Backup = "backup",
-  PeerPushDebit = "peer-push-debit",
-  PeerPullCredit = "peer-pull-credit",
-  PeerPushCredit = "peer-push-credit",
-  PeerPullDebit = "peer-pull-debit",
-}
-
 declare const __taskIdStr: unique symbol;
 export type TaskIdStr = string & { [__taskIdStr]: true };