diff --git a/.changeset/thirty-foxes-study.md b/.changeset/thirty-foxes-study.md
new file mode 100644
index 000000000000..389239f36664
--- /dev/null
+++ b/.changeset/thirty-foxes-study.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: prevent Rollup warnings for undefined hooks
diff --git a/packages/kit/src/exports/vite/index.js b/packages/kit/src/exports/vite/index.js
index bdb37b1f9cff..c2e445e865d2 100644
--- a/packages/kit/src/exports/vite/index.js
+++ b/packages/kit/src/exports/vite/index.js
@@ -678,7 +678,19 @@ Tips:
 								manualChunks: split ? undefined : () => 'bundle',
 								inlineDynamicImports: false
 							},
-							preserveEntrySignatures: 'strict'
+							preserveEntrySignatures: 'strict',
+							onwarn(warning, handler) {
+								if (
+									warning.code === 'MISSING_EXPORT' &&
+									warning.id === `${kit.outDir}/generated/client-optimized/app.js`
+								) {
+									// ignore e.g. undefined `handleError` hook when
+									// referencing `client_hooks.handleError`
+									return;
+								}
+
+								handler(warning);
+							}
 						},
 						ssrEmitAssets: true,
 						target: ssr ? 'node18.13' : undefined