Updates based on feedback

_code-samples/modular-tutorials/send-currency.js

@@ -8,27 +8,39 @@ async function createTrustLine() {
   await client.connect()
   let results = "\nConnected. Creating trust line.\n"
   resultField.value = results
-  const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
-  const trustSet_tx = {
-    "TransactionType": "TrustSet",
-    "Account": accountAddressField.value,
-    "LimitAmount": {
-      "currency": currencyField.value,
-      "issuer": issuerField.value,
-      "value": amountField.value
+  try {
+    const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
+    const trustSet_tx = {
+      "TransactionType": "TrustSet",
+      "Account": accountAddressField.value,
+      "LimitAmount": {
+        "currency": currencyField.value,
+        "issuer": issuerField.value,
+        "value": amountField.value
+      }
+    }
+    const ts_prepared = await client.autofill(trustSet_tx)
+    const ts_signed = wallet.sign(ts_prepared)
+    resultField.value = results
+    const ts_result = await client.submitAndWait(ts_signed.tx_blob)
+    if (ts_result.result.meta.TransactionResult == "tesSUCCESS") {
+      results += '\n===Trustline established between account\n' +
+        accountAddressField.value + "\nand account\n" + issuerField.value + '.'
+      resultField.value = results
+    } else {
+      results += `\n===Transaction failed: ${ts_result.result.meta.TransactionResult}`
+      resultField.value = results     
     }
   }
-  const ts_prepared = await client.autofill(trustSet_tx)
-  const ts_signed = wallet.sign(ts_prepared)
-  resultField.value = results
-  const ts_result = await client.submitAndWait(ts_signed.tx_blob)
-  if (ts_result.result.meta.TransactionResult == "tesSUCCESS") {
-    results += '\nTrustline established between account \n' +
-      accountAddressField.value + ' \n and account\n' + issuerField.value + '.'
+  catch (error) {
+    console.error('Error creating trust line:', error);
+    results += `\n===Error: ${error.message}\n`
     resultField.value = results
-  } else {
-    results += `\nTransaction failed: ${ts_result.result.meta.TransactionResult}`
-    resultField.value = results     
+    throw error; // Re-throw the error to be handled by the caller
+  }
+  finally {
+    // Disconnect from the client
+    await client.disconnect();
   }
 } //End of createTrustline()
       
@@ -44,29 +56,41 @@ async function sendCurrency() {
   await client.connect()
   results += '\nConnected.'
   resultField.value = results
-  const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
-  const send_currency_tx = {
-    "TransactionType": "Payment",
-    "Account": wallet.address,
-    "Amount": {
-      "currency": currencyField.value,
-      "value": amountField.value,
-      "issuer": issuerField.value
-    },
-    "Destination": destinationField.value
-  }
-  const pay_prepared = await client.autofill(send_currency_tx)
-  const pay_signed = wallet.sign(pay_prepared)
-  results += `\n\nSending ${amountField.value} ${currencyField.value} to ${destinationField.value} ...`
- resultField.value = results
+  try {
+    const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
+    const send_currency_tx = {
+      "TransactionType": "Payment",
+      "Account": wallet.address,
+      "Amount": {
+        "currency": currencyField.value,
+        "value": amountField.value,
+        "issuer": issuerField.value
+      },
+      "Destination": destinationField.value
+    }
+    const pay_prepared = await client.autofill(send_currency_tx)
+    const pay_signed = wallet.sign(pay_prepared)
+    results += `\n\n===Sending ${amountField.value} ${currencyField.value} to ${destinationField.value} ...`
+    resultField.value = results
   const pay_result = await client.submitAndWait(pay_signed.tx_blob)
   if (pay_result.result.meta.TransactionResult == "tesSUCCESS") {
-    results += 'Transaction succeeded.'
+    results += '\n===Transaction succeeded.'
     resultField.value = results
+    getTokenBalance()
   } else {
-    results += `\nTransaction failed: ${pay_result.result.meta.TransactionResult}`
+    results += `\n===Transaction failed: ${pay_result.result.meta.TransactionResult}\n`
     resultField.value = results
   }
   xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
-  client.disconnect()
+}
+  catch (error) {
+    console.error('Error sending transaction:', error);
+    results += `\nError: ${error.message}\n`
+    resultField.value = results
+    throw error; // Re-throw the error to be handled by the caller
+  }
+  finally {
+    // Disconnect from the client
+    await client.disconnect();
+  }
 } // end of sendCurrency()