Merge branch 'moreUpgrading' into dataViz-annotations

1 files changed, 5 insertions, 4 deletions

diff --git a/src/server/DashSession/Session/agents/applied_session_agent.ts b/src/server/DashSession/Session/agents/applied_session_agent.ts
index 8339a06dc..2037e93e5 100644
--- a/src/server/DashSession/Session/agents/applied_session_agent.ts
+++ b/src/server/DashSession/Session/agents/applied_session_agent.ts
@@ -1,7 +1,8 @@
-import { isMaster } from "cluster";
+import * as _cluster from "cluster";
 import { Monitor } from "./monitor";
 import { ServerWorker } from "./server_worker";
-import { Utilities } from "../utilities/utilities";
+const cluster = _cluster as any;
+const isMaster = cluster.isPrimary;
 
 export type ExitHandler = (reason: Error | boolean) => void | Promise<void>;
 
@@ -15,13 +16,13 @@ export abstract class AppliedSessionAgent {
     private launched = false;
 
     public killSession = (reason: string, graceful = true, errorCode = 0) => {
-        const target = isMaster ? this.sessionMonitor : this.serverWorker;
+        const target = cluster.default.isPrimary ? this.sessionMonitor : this.serverWorker;
         target.killSession(reason, graceful, errorCode);
     }
 
     private sessionMonitorRef: Monitor | undefined;
     public get sessionMonitor(): Monitor {
-        if (!isMaster) {
+        if (!cluster.default.isPrimary) {
             this.serverWorker.emit("kill", {
                 graceful: false,
                 reason: "Cannot access the session monitor directly from the server worker thread.",