feat: 氧化铝数字孪生系统监控大屏完成

node_modules/@mui/utils/getActiveElement/getActiveElement.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Gets the actual active element, traversing through shadow roots if necessary.
+ *
+ * When an element inside a shadow root has focus, `document.activeElement` returns
+ * the shadow host element. This function recursively traverses shadow roots to find
+ * the actual focused element.
+ *
+ * @param root - The document or shadow root to start the search from.
+ * @returns The actual focused element, or null if no element has focus.
+ *
+ * @example
+ * // In a shadow DOM context
+ * const activeElement = getActiveElement(document);
+ * // Returns the actual focused element inside the shadow root
+ *
+ * @example
+ * // Starting from a specific document
+ * const activeElement = getActiveElement(ownerDocument(element));
+ */
+export default function activeElement(doc: Document | ShadowRoot): Element | null;