FIX: Use correct export

src/TransactionService.js

@@ -33,11 +33,12 @@ export class TransactionService {
     _PrepareTransaction(retrieveRequest) {
 
         const client = new api.v1.EntityTransactionServiceClient(this.uri, null, null);
-        var transactionRequest = new api.v1.Transactionrequest();
+        var transactionRequest = new api.v1.TransactionRequest();
         transactionRequest.setRetrieveRequest(retrieveRequest);
         var request = new api.v1.MultiTransactionRequest();
         request.addRequests(transactionRequest);
 
+        const headers = {};
         return (res_cb, err_cb) => {
             client.multiTransaction(request, headers, (error_response, response) => {
                 if (error_response) {

src/index.js

@@ -20,6 +20,6 @@
  *
  * ** end header
  */
-import {
+export {
     TransactionService
 } from "./TransactionService";