From 392f7d223ab1d4449fd96307a90c2af60c68aab4 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Thu, 21 Mar 2024 15:15:55 -0400
Subject: [PATCH] chore: fix treeshaking check (#10862)

---
 packages/svelte/scripts/check-treeshakeability.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/packages/svelte/scripts/check-treeshakeability.js b/packages/svelte/scripts/check-treeshakeability.js
index a6164c462b..21f33ab6f0 100644
--- a/packages/svelte/scripts/check-treeshakeability.js
+++ b/packages/svelte/scripts/check-treeshakeability.js
@@ -12,6 +12,15 @@ async function bundle_code(entry) {
 			virtual({
 				__entry__: entry
 			}),
+			{
+				name: 'resolve-svelte',
+				resolveId(importee) {
+					if (importee.startsWith('svelte')) {
+						const entry = pkg.exports[importee.replace('svelte', '.')];
+						return path.resolve(entry.browser ?? entry.default);
+					}
+				}
+			},
 			nodeResolve({
 				exportConditions: ['production', 'import', 'browser', 'default']
 			})
@@ -99,6 +108,7 @@ const without_hydration = await bundle_code(
 		{ filename: 'App.svelte' }
 	).js.code
 );
+
 if (!without_hydration.includes('current_hydration_fragment')) {
 	// eslint-disable-next-line no-console
 	console.error(`✅ Hydration code treeshakeable`);