rollup.diff

diff --git a/sdk/servicebus/service-bus/src/connectionContext.ts b/sdk/servicebus/service-bus/src/connectionContext.ts
index 968a3e85..f81ebb12 100644
--- a/sdk/servicebus/service-bus/src/connectionContext.ts
+++ b/sdk/servicebus/service-bus/src/connectionContext.ts
@@ -11,7 +11,8 @@ import {
   CreateConnectionContextBaseParameters,
   Dictionary,
   delay,
-  TokenProvider
+  TokenProvider,
+  isNode
 } from "@azure/amqp-common";
 import { ServiceBusClientOptions } from "./serviceBusClient";
 import { ClientEntityContext } from "./clientEntityContext";
@@ -39,9 +40,15 @@ export namespace ConnectionContext {
    * @property {string} userAgent The user agent string for the ServiceBus client.
    * See guideline at https://github.com/Azure/azure-sdk/blob/master/docs/design/Telemetry.mdk
    */
-  export const userAgent: string = `azsdk-js-azureservicebus/${
-    packageJsonInfo.version
-  } (NODE-VERSION ${process.version}; ${os.type()} ${os.release()})`;
+  function getUAString(): string {
+    let uaString = `azsdk-js-azureservicebus/${packageJsonInfo.version}`;
+    if (isNode) {
+      uaString += ` (NODE - VERSION ${process.version}; ${os.type()} ${os.release()})`;
+    }
+    return uaString;
+  }
+
+  export const userAgent: string = getUAString();

   export function create(
     config: ConnectionConfig,