Move Build a Desktop Wallet code samples

content/_code-samples/build-a-desktop-wallet/js/library/4_helpers.js

@@ -0,0 +1,34 @@
+const xrpl = require("xrpl");
+
+const prepareTxData = (transactions) => {
+    return transactions.map(transaction => {
+        let tx_value = "-"
+        if (transaction.meta !== undefined && transaction.meta.delivered_amount !== undefined) {
+            tx_value = getDisplayableAmount(transaction.meta.delivered_amount)
+        }
+
+        return {
+            confirmed: transaction.tx.date,
+            type: transaction.tx.TransactionType,
+            from: transaction.tx.Account,
+            to: transaction.tx.Destination ?? "-",
+            value: tx_value,
+            hash: transaction.tx.hash
+        }
+    })
+}
+
+const getDisplayableAmount = (rawAmount) => {
+    if (rawAmount === 'unavailable') {
+        // Special case for pre-2014 partial payments.
+        return rawAmount
+    } else if (typeof rawAmount === 'string') {
+        // It's an XRP amount in drops. Convert to decimal.
+        return xrpl.dropsToXrp(rawAmount) + ' XRP'
+    } else {
+        //It's a token (IOU) amount.
+        return rawAmount.value + ' ' + rawAmount.currency
+    }
+}
+
+module.exports = { prepareTxData }