fix: vars

Author: jhefferman-sfdc

test/commands/lightning/dev/helpers/processUtils.ts

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2026, Salesforce, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import treeKill from 'tree-kill';
+
+/**
+ * Clean up a server process and all its child processes. Uses tree-kill so
+ * descendant node processes (e.g. LWR workers) are terminated.
+ */
+export function killServerProcess(serverProcess: { pid?: number } | null | undefined): void {
+  if (!serverProcess?.pid) return;
+  const pid = serverProcess.pid;
+  try {
+    treeKill(pid, 'SIGKILL');
+  } catch (error) {
+    const err = error as NodeJS.ErrnoException;
+    if (err.code !== 'ESRCH') throw error;
+  }
+}