Only use globalThis on creation of manualSlotsSupported

github · Feb 29, 2024 · a9ac510 · a9ac510
1 parent 7ba7bad
commit a9ac510
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/src/tab-container-element.ts b/src/tab-container-element.ts
@@ -1,6 +1,5 @@
 const HTMLElement = globalThis.HTMLElement || (null as unknown as (typeof window)['HTMLElement'])
-const HTMLSlotElement = globalThis.HTMLSlotElement || (null as unknown as (typeof window)['HTMLSlotElement'])
-const manualSlotsSupported = 'assign' in HTMLSlotElement.prototype
+const manualSlotsSupported = 'assign' in (globalThis.HTMLSlotElement?.prototype || {})
 
 export class TabContainerChangeEvent extends Event {
   constructor(type: string, {tab, panel, ...init}: EventInit & {tab?: Element; panel?: Element}) {