fix: allow exports with source from script module even if no bind is present

Author: paoloricciuti

.changeset/four-carrots-burn.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: allow exports with source from script module even if no bind is present

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -698,7 +698,7 @@ export function analyze_component(root, source, options) {
 	}
 
 	for (const node of analysis.module.ast.body) {
-		if (node.type === 'ExportNamedDeclaration' && node.specifiers !== null) {
+		if (node.type === 'ExportNamedDeclaration' && node.specifiers !== null && node.source == null) {
 			for (const specifier of node.specifiers) {
 				if (specifier.local.type !== 'Identifier') continue;
 

packages/svelte/tests/compiler-errors/samples/export-not-defined-module-with-source/_config.js

@@ -0,0 +1,5 @@
+import { test } from '../../test';
+
+export default test({
+	error: false
+});

packages/svelte/tests/compiler-errors/samples/export-not-defined-module-with-source/main.svelte

@@ -0,0 +1,3 @@
+<script module>
+	export { blah } from "./blah.js";
+</script>

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

@@ -5,11 +5,13 @@ import { suite, type BaseTest } from '../suite';
 import { read_file } from '../helpers.js';
 
 interface CompilerErrorTest extends BaseTest {
-	error: {
-		code: string;
-		message: string;
-		position?: [number, number];
-	};
+	error:
+		| {
+				code: string;
+				message: string;
+				position?: [number, number];
+		  }
+		| false;
 }
 
 const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
@@ -25,6 +27,9 @@ const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
 				generate: 'client'
 			});
 		} catch (e) {
+			if (config.error === false) {
+				assert.fail('Unexpected error');
+			}
 			const error = e as CompileError;
 
 			caught_error = true;
@@ -37,7 +42,7 @@ const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
 			}
 		}
 
-		if (!caught_error) {
+		if (config.error !== false && !caught_error) {
 			assert.fail('Expected an error');
 		}
 	}
@@ -50,6 +55,9 @@ const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
 				generate: 'client'
 			});
 		} catch (e) {
+			if (config.error === false) {
+				assert.fail('Unexpected error');
+			}
 			const error = e as CompileError;
 
 			caught_error = true;
@@ -62,7 +70,7 @@ const { test, run } = suite<CompilerErrorTest>((config, cwd) => {
 			}
 		}
 
-		if (!caught_error) {
+		if (config.error !== false && !caught_error) {
 			assert.fail('Expected an error');
 		}
 	}