/**
 * @fileoverview Runtime hook that fixes antd dropdown positioning
 * when running inside Angular's CSS transform context.
 *
 * antd's popup positioning (via rc-trigger / dom-align) calculates wrong
 * coordinates inside Angular because Angular applies CSS transforms that
 * break getBoundingClientRect-based positioning. This hook:
 *
 * 1. Injects a CSS rule using !important with CSS custom properties to
 *    override antd's inline left/top values. The fallback (-9999px) hides
 *    dropdowns until positioned, preventing flash-of-wrong-position.
 *
 * 2. Creates a MutationObserver that catches dropdown elements when
 *    added to the DOM and sets the CSS variables to correct viewport-
 *    relative coordinates based on the trigger element's position.
 *
 * This hook is Angular-specific and should only be registered when
 * running inside an Angular host application.
 *
 * @module @memberjunction/ng-react
 */
import { RuntimeHook } from '@memberjunction/react-runtime';
/**
 * Creates a RuntimeHook that fixes antd dropdown positioning inside Angular.
 * Uses position:absolute (antd's default) rather than position:fixed to
 * preserve antd's virtual scroll behavior inside dropdown panels.
 */
export declare function createAntdDropdownPositionHook(): RuntimeHook;