Merge pull request #54 from github/Include-modal-selector-in-base-sup…

…port

Include :modal selector in base support

src/index.ts

@@ -4,6 +4,14 @@ import * as elementCheckVisibility from './element-checkvisibility.js'
 import * as navigatorClipboard from './navigator-clipboard.js'
 import * as requestIdleCallback from './requestidlecallback.js'
 
+let supportsModalPseudo = false
+try {
+ // This will error in older browsers
+ supportsModalPseudo = document.body.matches(':modal') === false
+} catch {
+ supportsModalPseudo = false
+}
+
 export const baseSupport =
  typeof globalThis === 'object' &&
  // ES2019
@@ -26,6 +34,7 @@ export const baseSupport =
  // DOM / HTML and other specs
  typeof queueMicrotask === 'function' &&
  typeof HTMLDialogElement === 'function' &&
+ supportsModalPseudo &&
  typeof AggregateError === 'function' &&
  typeof BroadcastChannel === 'function' &&
  'randomUUID' in crypto &&