Re-added code to clean branch

content/_code-samples/build-a-wallet/desktop-js/library/7_helpers.js

@@ -0,0 +1,28 @@
+const xrpl = require("xrpl");
+
+/**
+ * Prepares, signs and submits a payment transaction
+ *
+ * @param paymentData
+ * @param client
+ * @param wallet
+ * @returns {Promise<*>}
+ */
+const sendXrp = async (paymentData, client, wallet) => {
+    // Reference: https://xrpl.org/submit.html#request-format-1
+    const paymentTx = {
+        "TransactionType": "Payment",
+        "Account": wallet.address,
+        "Amount": xrpl.xrpToDrops(paymentData.amount),
+        "Destination": paymentData.destinationAddress,
+        "DestinationTag": parseInt(paymentData.destinationTag)
+    }
+
+    const preparedTx = await client.autofill(paymentTx)
+
+    const signedTx = wallet.sign(preparedTx)
+
+    return  await client.submitAndWait(signedTx.tx_blob)
+}
+
+module.exports = { sendXrp }