Function isShadowRoot

packages/react-aria/src/utils/domHelpers.ts:64–67

(value: unknown)

 * distinguish ShadowRoot from other values.
 */
export function isShadowRoot(value: unknown): value is ShadowRoot {
  // 11 = DOCUMENT_FRAGMENT_NODE
  return isNode(value) && value.nodeType === 11 && 'host' in value;
}

/**
 * Attaches an event listener on target(s) and returns a cleanup function.