From e8aec5abbdf29a6f02ae7cbd428c9967d73942a0 Mon Sep 17 00:00:00 2001
From: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
Date: Mon, 9 Mar 2026 15:35:57 +0900
Subject: [PATCH] fix: use `watch.watcher` instead of `watch.notify`

---
 packages/vite/src/node/build.ts | 4 ++--
 packages/vite/src/node/watch.ts | 7 ++++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/packages/vite/src/node/build.ts b/packages/vite/src/node/build.ts
index b2b5ecef6f7441..d4931ff8ecc3b9 100644
--- a/packages/vite/src/node/build.ts
+++ b/packages/vite/src/node/build.ts
@@ -66,7 +66,7 @@ import { ssrManifestPlugin } from './ssr/ssrManifestPlugin'
 import { findNearestMainPackageData, findNearestPackageData } from './packages'
 import type { PackageCache } from './packages'
 import {
-  convertToNotifyOptions,
+  convertToWatcherOptions,
   getResolvedOutDirs,
   resolveChokidarOptions,
   resolveEmptyOutDir,
@@ -841,7 +841,7 @@ async function buildEnvironment(
         watch: {
           ...rollupOptions.watch,
           ...options.watch,
-          notify: convertToNotifyOptions(resolvedChokidarOptions),
+          watcher: convertToWatcherOptions(resolvedChokidarOptions),
         },
       })
 
diff --git a/packages/vite/src/node/watch.ts b/packages/vite/src/node/watch.ts
index ed709c9764ba9e..3fc2a5a600acc5 100644
--- a/packages/vite/src/node/watch.ts
+++ b/packages/vite/src/node/watch.ts
@@ -78,13 +78,14 @@ export function resolveChokidarOptions(
   return resolvedWatchOptions
 }
 
-export function convertToNotifyOptions(
+export function convertToWatcherOptions(
   options: WatchOptions | undefined,
-): WatcherOptions['notify'] {
+): WatcherOptions['watcher'] {
   if (!options) return
 
   return {
-    pollInterval: options.usePolling ? (options.interval ?? 100) : undefined,
+    usePolling: options.usePolling,
+    pollInterval: options.interval,
   }
 }