From fd8a481a129570141ac97985ca9115473d250385 Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Tue, 4 Dec 2018 16:49:03 -0500
Subject: [PATCH] process: simplify check in previousValueIsValid()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This commit replaces a call to Number.isFinite() with a
cheaper typeof check. The subsequent range checks ensure that
the checked value is finite.

PR-URL: https://github.com/nodejs/node/pull/24836
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
---
 lib/internal/process/per_thread.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/internal/process/per_thread.js b/lib/internal/process/per_thread.js
index 28f1881d6f7150..b196e4270f69b7 100644
--- a/lib/internal/process/per_thread.js
+++ b/lib/internal/process/per_thread.js
@@ -85,7 +85,7 @@ function setupCpuUsage(_cpuUsage) {
   // Ensure that a previously passed in value is valid. Currently, the native
   // implementation always returns numbers <= Number.MAX_SAFE_INTEGER.
   function previousValueIsValid(num) {
-    return Number.isFinite(num) &&
+    return typeof num === 'number' &&
         num <= Number.MAX_SAFE_INTEGER &&
         num >= 0;
   }