From e965e57aafe00c97e48814985f53b92d314ade67 Mon Sep 17 00:00:00 2001
From: Simon Holthausen <simon.holthausen@vercel.com>
Date: Mon, 26 Aug 2024 18:03:35 +0200
Subject: [PATCH] fix: don't reassign bound imports on the server

fixes #13027
---
 .changeset/heavy-insects-float.md             |  5 ++++
 .../server/visitors/shared/component.js       | 28 +++++++++++--------
 2 files changed, 22 insertions(+), 11 deletions(-)
 create mode 100644 .changeset/heavy-insects-float.md

diff --git a/.changeset/heavy-insects-float.md b/.changeset/heavy-insects-float.md
new file mode 100644
index 0000000000..b57aa4d4f5
--- /dev/null
+++ b/.changeset/heavy-insects-float.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: don't reassign bound imports on the server
diff --git a/packages/svelte/src/compiler/phases/3-transform/server/visitors/shared/component.js b/packages/svelte/src/compiler/phases/3-transform/server/visitors/shared/component.js
index 941088228a..3ae6d7ff06 100644
--- a/packages/svelte/src/compiler/phases/3-transform/server/visitors/shared/component.js
+++ b/packages/svelte/src/compiler/phases/3-transform/server/visitors/shared/component.js
@@ -80,22 +80,28 @@ export function build_inline_component(node, expression, context) {
 			const value = build_attribute_value(attribute.value, context, false, true);
 			push_prop(b.prop('init', b.key(attribute.name), value));
 		} else if (attribute.type === 'BindDirective' && attribute.name !== 'this') {
-			// TODO this needs to turn the whole thing into a while loop because the binding could be mutated eagerly in the child
 			push_prop(
 				b.get(attribute.name, [
 					b.return(/** @type {Expression} */ (context.visit(attribute.expression)))
 				])
 			);
-			push_prop(
-				b.set(attribute.name, [
-					b.stmt(
-						/** @type {Expression} */ (
-							context.visit(b.assignment('=', attribute.expression, b.id('$$value')))
-						)
-					),
-					b.stmt(b.assignment('=', b.id('$$settled'), b.false))
-				])
-			);
+			if (
+				// Don't reassign imports
+				attribute.expression.type !== 'Identifier' ||
+				attribute.expression.name !== attribute.name ||
+				context.state.scope.get(attribute.name)?.declaration_kind !== 'import'
+			) {
+				push_prop(
+					b.set(attribute.name, [
+						b.stmt(
+							/** @type {Expression} */ (
+								context.visit(b.assignment('=', attribute.expression, b.id('$$value')))
+							)
+						),
+						b.stmt(b.assignment('=', b.id('$$settled'), b.false))
+					])
+				);
+			}
 		}
 	}