diff --git a/packages/backend-core/src/timers/timers.ts b/packages/backend-core/src/timers/timers.ts
index 9a8067ee64..3bb556703f 100644
--- a/packages/backend-core/src/timers/timers.ts
+++ b/packages/backend-core/src/timers/timers.ts
@@ -36,14 +36,12 @@ export class ExecutionTimeTracker {
 
   track<T>(f: () => T): T {
     this.checkLimit()
-    const [startSeconds, startNanoseconds] = process.hrtime()
-    const startMs = startSeconds * 1000 + startNanoseconds / 1e6
+    const start = process.hrtime.bigint()
     try {
       return f()
     } finally {
-      const [endSeconds, endNanoseconds] = process.hrtime()
-      const endMs = endSeconds * 1000 + endNanoseconds / 1e6
-      this.totalTimeMs += endMs - startMs
+      const end = process.hrtime.bigint()
+      this.totalTimeMs += Number(end - start) / 1e6
       this.checkLimit()
     }
   }
diff --git a/packages/backend-core/src/utils/Duration.ts b/packages/backend-core/src/utils/Duration.ts
index 3f5d26c971..730b59d1dc 100644
--- a/packages/backend-core/src/utils/Duration.ts
+++ b/packages/backend-core/src/utils/Duration.ts
@@ -50,7 +50,7 @@ export class Duration {
     return Duration.from(DurationType.DAYS, duration)
   }
 
-  static fromMiliseconds(duration: number) {
+  static fromMilliseconds(duration: number) {
     return Duration.from(DurationType.MILLISECONDS, duration)
   }
 }
diff --git a/packages/server/src/javascript.ts b/packages/server/src/jsRunner.ts
similarity index 100%
rename from packages/server/src/javascript.ts
rename to packages/server/src/jsRunner.ts
diff --git a/packages/server/src/startup.ts b/packages/server/src/startup.ts
index 2d73fe2fb0..6860fe5f9b 100644
--- a/packages/server/src/startup.ts
+++ b/packages/server/src/startup.ts
@@ -23,7 +23,7 @@ import { automationsEnabled, printFeatures } from "./features"
 import Koa from "koa"
 import { Server } from "http"
 import { AddressInfo } from "net"
-import * as javascript from "./javascript"
+import * as jsRunner from "./jsRunner"
 
 let STARTUP_RAN = false
 
@@ -154,5 +154,5 @@ export async function startup(app?: Koa, server?: Server) {
     })
   }
 
-  javascript.init()
+  jsRunner.init()
 }