From c04a13b8d300293147d788e4a1e64931c67f687d Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Wed, 25 Jun 2025 22:26:46 -0400
Subject: [PATCH] fix weird bug in tests

---
 .../svelte/src/internal/client/reactivity/batch.js     | 10 ++++++++++
 packages/svelte/tests/runtime-legacy/shared.ts         |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/packages/svelte/src/internal/client/reactivity/batch.js b/packages/svelte/src/internal/client/reactivity/batch.js
index 02ae6f8e27..e51fab23f9 100644
--- a/packages/svelte/src/internal/client/reactivity/batch.js
+++ b/packages/svelte/src/internal/client/reactivity/batch.js
@@ -302,3 +302,13 @@ export class Batch {
 		return current_batch;
 	}
 }
+
+/**
+ * Forcibly remove all current batches
+ * TODO investigate why we need this in tests
+ */
+export function clear() {
+	for (const batch of batches) {
+		batch.remove();
+	}
+}
diff --git a/packages/svelte/tests/runtime-legacy/shared.ts b/packages/svelte/tests/runtime-legacy/shared.ts
index 25e89e7db8..4ccd602afc 100644
--- a/packages/svelte/tests/runtime-legacy/shared.ts
+++ b/packages/svelte/tests/runtime-legacy/shared.ts
@@ -11,6 +11,7 @@ import { assert_html_equal, assert_html_equal_with_options } from '../html_equal
 import { raf } from '../animation-helpers.js';
 import type { CompileOptions } from '#compiler';
 import { suite_with_variants, type BaseTest } from '../suite.js';
+import { clear } from '../../src/internal/client/reactivity/batch.js';
 
 type Assert = typeof import('vitest').assert & {
 	htmlEqual(a: string, b: string, description?: string): void;
@@ -521,6 +522,8 @@ async function run_test_variant(
 		console.log = console_log;
 		console.warn = console_warn;
 		console.error = console_error;
+
+		clear();
 	}
 }