fix: ensure inline object literals are correctly serialised

Author: trueadm

.changeset/wicked-readers-knock.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: ensure inline object literals are correctly serialised

packages/svelte/src/compiler/phases/2-analyze/visitors/shared/utils.js

@@ -184,6 +184,9 @@ export function is_pure(node, context) {
 	if (node.type !== 'Identifier' && node.type !== 'MemberExpression') {
 		return false;
 	}
+	if (node.type === 'MemberExpression' && node.object.type === 'Literal') {
+		return true;
+	}
 
 	const left = object(node);
 	if (!left) return false;

packages/svelte/tests/runtime-legacy/samples/inline-expressions-2/_config.js

@@ -0,0 +1,10 @@
+import { test } from '../../test';
+
+export default test({
+	html: `
+		<p>Without text expression: 7.36</p>
+		<p>With text expression: 7.36</p>
+		<p>With text expression and function call: 7.36</p>
+		<p>With text expression and property access: 4</p>
+		<p>4</p>`
+});

packages/svelte/tests/runtime-legacy/samples/inline-expressions-2/main.svelte

@@ -0,0 +1,5 @@
+<p>Without text expression: 7.36</p>
+<p>With text expression: {7.36}</p>
+<p>With text expression and function call: {(7.36).toLocaleString()}</p>
+<p>With text expression and property access: {"test".length}</p>
+<p>{"test".length}</p>