Merged branch 'master' into 'issue-62'

src/SASViyaApiClient.ts

@@ -3,7 +3,8 @@ import {
   parseAndSubmitAuthorizeForm,
   convertToCSV,
   makeRequest,
-  isUri
+  isUri,
+  isUrl
 } from './utils'
 import * as NodeFormData from 'form-data'
 import * as path from 'path'
@@ -27,7 +28,10 @@ export class SASViyaApiClient {
     if (!rootFolderName) {
       throw new Error('Root folder must be provided.')
     }
+
+    if (serverUrl) isUrl(serverUrl)
   }
+
   private csrfToken: CsrfToken | null = null
   private rootFolder: Folder | null = null
   private sessionManager = new SessionManager(