From bd54a6bb2bb4594e7ce6fca4c7212f2d0d99b164 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Tue, 16 Jul 2024 10:03:02 -0700
Subject: [PATCH] Verify that perf_hooks result actually contains the
 performance object (#59300)

---
 src/compiler/performanceCore.ts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/compiler/performanceCore.ts b/src/compiler/performanceCore.ts
index abff50eb8aa..ba03e7a3314 100644
--- a/src/compiler/performanceCore.ts
+++ b/src/compiler/performanceCore.ts
@@ -31,11 +31,14 @@ function tryGetPerformance() {
     if (isNodeLikeSystem()) {
         try {
             // By default, only write native events when generating a cpu profile or using the v8 profiler.
-            const { performance } = require("perf_hooks") as typeof import("perf_hooks");
-            return {
-                shouldWriteNativeEvents: false,
-                performance,
-            };
+            // Some environments may polyfill this module with an empty object; verify the object has the expected shape.
+            const { performance } = require("perf_hooks") as Partial<typeof import("perf_hooks")>;
+            if (performance) {
+                return {
+                    shouldWriteNativeEvents: false,
+                    performance,
+                };
+            }
         }
         catch {
             // ignore errors