From 58497f13b2ca494f233c290f6571f5f03f142d7f Mon Sep 17 00:00:00 2001
From: Andrew Jakubowicz <ajakubowicz@google.com>
Date: Tue, 5 Sep 2023 15:55:50 -0700
Subject: [PATCH] fix(tabs): use instanceof to check for a Tab

PiperOrigin-RevId: 562917297
---
 tabs/internal/tab.ts  | 6 ------
 tabs/internal/tabs.ts | 2 +-
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/tabs/internal/tab.ts b/tabs/internal/tab.ts
index 2eb2d7854..537f324de 100644
--- a/tabs/internal/tab.ts
+++ b/tabs/internal/tab.ts
@@ -35,12 +35,6 @@ export class Tab extends LitElement {
   static override shadowRootOptions:
       ShadowRootInit = {mode: 'open', delegatesFocus: true};
 
-  /**
-   * @private indicates that the element is a tab for `<md-tabs>`
-   * @nocollapse
-   */
-  static readonly isTab = true;
-
   /**
    * Whether or not the tab is `selected`.
    **/
diff --git a/tabs/internal/tabs.ts b/tabs/internal/tabs.ts
index 47e56e040..70716fd45 100644
--- a/tabs/internal/tabs.ts
+++ b/tabs/internal/tabs.ts
@@ -296,5 +296,5 @@ export class Tabs extends LitElement {
 }
 
 function isTab(element: HTMLElement): element is Tab {
-  return 'isTab' in element.constructor && element.constructor.isTab === true;
+  return element instanceof Tab;
 }