fix

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

@@ -23,6 +23,7 @@ import { Attribute } from './visitors/Attribute.js';
 import { AwaitBlock } from './visitors/AwaitBlock.js';
 import { BindDirective } from './visitors/BindDirective.js';
 import { CallExpression } from './visitors/CallExpression.js';
+import { ClassBody } from './visitors/ClassBody.js';
 import { ClassDeclaration } from './visitors/ClassDeclaration.js';
 import { ClassDirective } from './visitors/ClassDirective.js';
 import { Component } from './visitors/Component.js';
@@ -139,6 +140,7 @@ const visitors = {
 	AwaitBlock,
 	BindDirective,
 	CallExpression,
+	ClassBody,
 	ClassDeclaration,
 	ClassDirective,
 	Component,

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

@@ -0,0 +1,14 @@
+/** @import { ClassBody } from 'estree' */
+/** @import { Context } from '../types' */
+import { ClassAnalysis } from './shared/class-analysis.js';
+
+/**
+ * @param {ClassBody} node
+ * @param {Context} context
+ */
+export function ClassBody(node, context) {
+	context.next({
+		...context.state,
+		class_state: context.state.analysis.runes ? new ClassAnalysis() : null
+	});
+}

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

@@ -1,7 +1,6 @@
 /** @import { ClassDeclaration } from 'estree' */
 /** @import { Context } from '../types' */
 import * as w from '../../../warnings.js';
-import { ClassAnalysis } from './shared/class-analysis.js';
 import { validate_identifier_name } from './shared/utils.js';
 
 /**
@@ -22,8 +21,5 @@ export function ClassDeclaration(node, context) {
 		w.perf_avoid_nested_class(node);
 	}
 
-	context.next({
-		...context.state,
-		class_state: context.state.analysis.runes ? new ClassAnalysis() : null
-	});
+	context.next();
 }