Re-added code to clean branch

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

@@ -0,0 +1,14 @@
+const xrpl = require("xrpl");
+
+const prepareTxData = (transactions) => {
+    return transactions.map(transaction => ({
+        confirmed: transaction.tx.date,
+        type: transaction.tx.TransactionType,
+        from: transaction.tx.Account,
+        to: transaction.tx.Destination,
+        value: xrpl.dropsToXrp(transaction.tx.Amount),
+        hash: transaction.tx.hash
+    }))
+}
+
+module.exports = { prepareTxData }