fixes

.changeset/itchy-beans-melt.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: fix compiler errors test suite

packages/svelte/src/compiler/phases/1-parse/state/element.js

@@ -205,7 +205,8 @@ export default function tag(parser) {
 		if (attribute.type === 'Attribute' || attribute.type === 'BindDirective') {
 			if (unique_names.includes(attribute.name)) {
 				error(attribute.start, 'duplicate-attribute');
-			} else {
+				// <svelte:element bind:this this=..> is allowed
+			} else if (attribute.name !== 'this') {
 				unique_names.push(attribute.name);
 			}
 		}

packages/svelte/tests/compiler-errors/samples/export-derived-state/_config.js

@@ -4,6 +4,6 @@ export default test({
 	error: {
 		code: 'invalid-derived-export',
 		message: 'Cannot export derived state',
-		position: process.platform === 'win32' ? [26, 68] : [24, 66]
+		position: [24, 66]
 	}
 });

packages/svelte/tests/compiler-errors/samples/export-state/_config.js

@@ -4,6 +4,6 @@ export default test({
 	error: {
 		code: 'invalid-state-export',
 		message: 'Cannot export state if it is reassigned',
-		position: process.platform === 'win32' ? [50, 90] : [46, 86]
+		position: [46, 86]
 	}
 });

packages/svelte/tests/compiler-errors/samples/runes-export-named-state/_config.js

@@ -2,7 +2,8 @@ import { test } from '../../test';
 
 export default test({
 	error: {
-		code: '',
-		message: 'Cannot export value created with $state'
+		code: 'invalid-state-export',
+		message: 'Cannot export state if it is reassigned',
+		position: [28, 53]
 	}
 });

packages/svelte/tests/compiler-errors/samples/runes-export-named-state/main.svelte.js

@@ -1 +1,3 @@
 export const x = $state(0);
+export let y = $state(0);
+y = 1;

packages/svelte/tests/compiler-errors/test.ts

@@ -54,8 +54,8 @@ const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
 
 			caught_error = true;
 
-			expect(error.code).toMatch(config.error.code);
-			expect(error.message).toMatch(config.error.message);
+			expect(error.code).toEqual(config.error.code);
+			expect(error.message).toEqual(config.error.message);
 
 			if (config.error.position) {
 				expect(error.position).toEqual(config.error.position);