From e26d8b46c17adfd21c66d56fa4e35e85c527e5dc Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Mon, 2 Jun 2025 16:22:22 +0000
Subject: [PATCH 1/3] fix: handle non-semver-style dependency versions

Fixes #13836
---
 .changeset/smooth-trains-applaude.md | 5 +++++
 packages/package/src/typescript.js   | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/smooth-trains-applaude.md

diff --git a/.changeset/smooth-trains-applaude.md b/.changeset/smooth-trains-applaude.md
new file mode 100644
index 000000000000..f5b9ab2bf48b
--- /dev/null
+++ b/.changeset/smooth-trains-applaude.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: handle non-semver-style dependency versions
diff --git a/packages/package/src/typescript.js b/packages/package/src/typescript.js
index 12d1c32d710f..8e58635cb96f 100644
--- a/packages/package/src/typescript.js
+++ b/packages/package/src/typescript.js
@@ -28,7 +28,13 @@ export async function emit_dts(input, output, final_output, cwd, alias, files, t
 	const require = createRequire(import.meta.url);
 	const pkg = load_pkg_json(cwd);
 	const svelte_dep = pkg.peerDependencies?.svelte || pkg.dependencies?.svelte || '3.0';
-	const no_svelte_3 = !semver.intersects(svelte_dep, '^3.0.0');
+	let no_svelte_3;
+	try {
+		no_svelte_3 = !semver.intersects(svelte_dep, '^3.0.0');
+	} catch (e) {
+		// Not all version specs are valid semver, e.g. "latest" or "next" or catalog references
+		no_svelte_3 = true;
+	}
 	await emitDts({
 		libRoot: input,
 		svelteShimsPath: no_svelte_3

From 4157e9d9743a7ea4b5ca38d91667b4526f158d36 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Mon, 2 Jun 2025 22:06:18 +0200
Subject: [PATCH 2/3] Update packages/package/src/typescript.js

---
 packages/package/src/typescript.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/package/src/typescript.js b/packages/package/src/typescript.js
index 8e58635cb96f..1776a6d5e6c5 100644
--- a/packages/package/src/typescript.js
+++ b/packages/package/src/typescript.js
@@ -31,7 +31,7 @@ export async function emit_dts(input, output, final_output, cwd, alias, files, t
 	let no_svelte_3;
 	try {
 		no_svelte_3 = !semver.intersects(svelte_dep, '^3.0.0');
-	} catch (e) {
+	} catch (_) {
 		// Not all version specs are valid semver, e.g. "latest" or "next" or catalog references
 		no_svelte_3 = true;
 	}

From 13ff753bafc0349170df51357be50388494e34a0 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Mon, 2 Jun 2025 22:34:05 +0200
Subject: [PATCH 3/3] Update packages/package/src/typescript.js

---
 packages/package/src/typescript.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/package/src/typescript.js b/packages/package/src/typescript.js
index 1776a6d5e6c5..81c0f348e635 100644
--- a/packages/package/src/typescript.js
+++ b/packages/package/src/typescript.js
@@ -31,7 +31,7 @@ export async function emit_dts(input, output, final_output, cwd, alias, files, t
 	let no_svelte_3;
 	try {
 		no_svelte_3 = !semver.intersects(svelte_dep, '^3.0.0');
-	} catch (_) {
+	} catch {
 		// Not all version specs are valid semver, e.g. "latest" or "next" or catalog references
 		no_svelte_3 = true;
 	}