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website/node_modules/@mui/x-internals/domUtils/getTarget.mjs

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+/**
+ * Returns the target element of an event, accounting for shadow DOM.
+ * @param event The event object.
+ * @returns The target element of the event.
+ */
+export function getTarget(event) {
+  if ('composedPath' in event) {
+    return event.composedPath()[0] ?? event.target;
+  }
+
+  // Fallback for environments where `composedPath` is not available.
+  // TS narrows `event` to `never` here because it assumes `composedPath` always exists.
+  return event.target;
+}