From 783951d0fb9e82e84b5da9ac48de203299e7ad09 Mon Sep 17 00:00:00 2001
From: Bibek Barik <devmail.js@gmail.com>
Date: Sat, 8 Aug 2026 15:55:51 +0530
Subject: [PATCH] docs(contributing): fix jest reference in vitest mock example
 (#3996)

The "Now (vitest)" example under "Mocking modules" uses `jest.fn()`
instead of `vitest.fn()` when mocking `os.freemem`. This is leftover
from the Jest to vitest migration.

`vitest.config.mts` sets `test.globals: true` with no jest alias, so
copying this example as written would throw "ReferenceError: jest is not
defined" in a real test file. Every other example in the same guide
correctly uses `vitest.fn()`.
---
 CONTRIBUTING.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2a04e6027ed0..656e3439c5d2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -110,7 +110,7 @@ vitest.mock('node:os', async (importActual) => {
     return {
         ...original,
         platform: () => 'darwin',
-        freemem: jest.fn(),
+        freemem: vitest.fn(),
     };
 });
 ```