From de236f03eb762fa005e57511fafb5b998691fcbe Mon Sep 17 00:00:00 2001
From: Alex Holliday <ajhollid@gmail.com>
Date: Tue, 20 Jan 2026 21:53:19 +0000
Subject: [PATCH] js->ts

---
 .../{diagnosticService.js => diagnosticService.ts} | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
 rename server/src/service/business/{diagnosticService.js => diagnosticService.ts} (88%)

diff --git a/server/src/service/business/diagnosticService.js b/server/src/service/business/diagnosticService.ts
similarity index 88%
rename from server/src/service/business/diagnosticService.js
rename to server/src/service/business/diagnosticService.ts
index 353604932..6c49933a4 100644
--- a/server/src/service/business/diagnosticService.js
+++ b/server/src/service/business/diagnosticService.ts
@@ -3,6 +3,14 @@ import os from "os";
 
 const SERVICE_NAME = "diagnosticService";
 
+interface MemoryUsageMetrics {
+	rss: number;
+	heapTotal: number;
+	heapUsed: number;
+	external: number;
+	arrayBuffers: number;
+}
+
 class DiagnosticService {
 	static SERVICE_NAME = SERVICE_NAME;
 
@@ -47,8 +55,8 @@ class DiagnosticService {
 		};
 
 		const used = process.memoryUsage();
-		const memoryUsage = {};
-		for (let key in used) {
+		const memoryUsage: Record<string, number> = {};
+		for (const key of Object.keys(used) as Array<keyof NodeJS.MemoryUsage>) {
 			memoryUsage[`${key}Mb`] = Math.round((used[key] / 1024 / 1024) * 100) / 100; // MB
 		}
 
@@ -70,7 +78,7 @@ class DiagnosticService {
 		performance.mark("end");
 		performance.measure("eventLoopDelay", "start", "end");
 		const entries = performance.getEntriesByName("eventLoopDelay");
-		if (entries.length > 0) {
+		if (entries.length > 0 && entries[0] !== undefined) {
 			eventLoopDelay = entries[0].duration;
 		}