fix(respondable): work on iframes in shadow DOM (#2857)

dequelabs · Apr 1, 2021 · 65cbfd0 · 65cbfd0
1 parent df5d01b
commit 65cbfd0
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diff --git a/lib/core/utils/respondable/assert-window.js b/lib/core/utils/respondable/assert-window.js
@@ -9,11 +9,11 @@ export function assertIsParentWindow(win) {
 }
 
 export function assertIsFrameWindow(win) {
-	assetNotGlobalWindow(win);
-	const frames = Array.from(window.frames);
-	if (!frames.some(frame => frame === win)) {
-		throw new Error('Respondable target must be a frame in the current window');
-	}
+  assetNotGlobalWindow(win);
+  assert(
+    win.parent === window,
+    'Respondable target must be a frame in the current window'
+  );
 }
 
 export function assetNotGlobalWindow(win) {