diff --git a/src/profiler/runtime/clock.ts b/src/profiler/runtime/clock.ts
index 97a6f833c..282a95bf1 100644
--- a/src/profiler/runtime/clock.ts
+++ b/src/profiler/runtime/clock.ts
@@ -1,24 +1,29 @@
 import { performance } from "node:perf_hooks";
 
+interface CpuUsage {
+    user: number;
+    system: number;
+}
+
 export interface ProfilerClock {
     /** High-resolution monotonic time in milliseconds. It is suitable for measuring elapsed time. */
     now(): number;
     /** Unix wall-clock timestamp in milliseconds. It is suitable for timestamps shared between processes. */
     epochNow(): number;
     /** Process CPU usage since startup, or since `previousValue` when it is supplied. */
-    cpuUsage(previousValue?: NodeJS.CpuUsage): NodeJS.CpuUsage;
+    cpuUsage(previousValue?: CpuUsage): CpuUsage;
     /** Current-thread CPU usage since startup, or since `previousValue` when it is supplied. */
-    threadCpuUsage?(previousValue?: NodeJS.CpuUsage): NodeJS.CpuUsage;
+    threadCpuUsage?(previousValue?: CpuUsage): CpuUsage;
 }
 
 export const systemClock: ProfilerClock = {
     now: () => performance.now(),
     epochNow: () => Date.now(),
-    cpuUsage: (previousValue): NodeJS.CpuUsage => process.cpuUsage(previousValue),
+    cpuUsage: (previousValue): CpuUsage => process.cpuUsage(previousValue),
     threadCpuUsage:
         typeof process.threadCpuUsage === "function"
-            ? (previousValue): NodeJS.CpuUsage => process.threadCpuUsage(previousValue)
+            ? (previousValue): CpuUsage => process.threadCpuUsage(previousValue)
             : undefined,
 };
 
-export const cpuUsageToMs = (usage: NodeJS.CpuUsage): number => (usage.user + usage.system) / 1000;
+export const cpuUsageToMs = (usage: CpuUsage): number => (usage.user + usage.system) / 1000;