From fddafe6ad898bf236f6338fd6ce74c07477e890a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mino=20Rem?= <29999+remino@users.noreply.github.com>
Date: Sun, 8 Mar 2026 20:50:23 +0900
Subject: [PATCH] Show multiple favicons warning as debug message:

A logger.warn() message was displayed before. Changing to
logger.debug().
---
 code/core/src/core-server/presets/common-preset.ts |  2 +-
 code/core/src/core-server/presets/favicon.test.ts  | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/code/core/src/core-server/presets/common-preset.ts b/code/core/src/core-server/presets/common-preset.ts
index 22387945616a..f1004214dc8b 100644
--- a/code/core/src/core-server/presets/common-preset.ts
+++ b/code/core/src/core-server/presets/common-preset.ts
@@ -93,7 +93,7 @@ export const favicon = async (
     .reduce((l1, l2) => l1.concat(l2), []);
 
   if (faviconPaths.length > 1) {
-    logger.warn(dedent`
+    logger.debug(dedent`
       Looks like multiple favicons were detected. Using the first one.
 
       ${faviconPaths.join(', ')}
diff --git a/code/core/src/core-server/presets/favicon.test.ts b/code/core/src/core-server/presets/favicon.test.ts
index e6be6ebb054f..b35a99d6f602 100644
--- a/code/core/src/core-server/presets/favicon.test.ts
+++ b/code/core/src/core-server/presets/favicon.test.ts
@@ -49,7 +49,7 @@ const createOptions = (locations: string[]): Parameters<typeof m.favicon>[1] =>
 vi.mock('storybook/internal/node-logger', () => {
   return {
     logger: {
-      warn: vi.fn(() => {}),
+      debug: vi.fn(() => {}),
     },
   };
 });
@@ -125,7 +125,7 @@ it('with staticDirs containing a single favicon.svg should return the found favi
   );
 });
 
-it('with staticDirs containing a multiple favicons should return the first favicon and warn', async () => {
+it('with staticDirs containing a multiple favicons should return the first favicon and show a debug message', async () => {
   const location = 'static';
   existsSyncMock.mockImplementation((p) => {
     if (normalize(String(p)) === normalize(createPath(location))) {
@@ -145,10 +145,10 @@ it('with staticDirs containing a multiple favicons should return the first favic
     normalize(createPath(location, 'favicon.svg'))
   );
 
-  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('multiple favicons'));
+  expect(logger.debug).toHaveBeenCalledWith(expect.stringContaining('multiple favicons'));
 });
 
-it('with multiple staticDirs containing a multiple favicons should return the first favicon and warn', async () => {
+it('with multiple staticDirs containing a multiple favicons should return the first favicon and show a debug message', async () => {
   const locationA = 'static-a';
   const locationB = 'static-b';
   existsSyncMock.mockImplementation((p) => {
@@ -172,5 +172,5 @@ it('with multiple staticDirs containing a multiple favicons should return the fi
     normalize(createPath(locationA, 'favicon.ico'))
   );
 
-  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('multiple favicons'));
+  expect(logger.debug).toHaveBeenCalledWith(expect.stringContaining('multiple favicons'));
 });