import { EnsureShadowMountOptions } from '../../types/shadow/EnsureShadowMountOptions';
import { ShadowMount } from '../../types/shadow/ShadowMount';
/**
 * Ensures a ShadowRoot mount exists on the host element for a widget.
 *
 * Creates stable React-mount and portal-container nodes, injects the widget's CSS
 * into the shadow root only (never into the document), and configures an Emotion
 * cache scoped to the shadow root. All internal ids are namespaced by `cacheKey`
 * so editor and runtime mounts on the same host never collide.
 * @param {HTMLElement} host - The host element to attach the shadow root to.
 * @param {EnsureShadowMountOptions} options - The cache key and the widget's CSS text.
 * @returns {ShadowMount} The shadow root, mount nodes and the scoped Emotion cache.
 */
export declare const ensureShadowMount: (host: HTMLElement, { cacheKey, cssText }: EnsureShadowMountOptions) => ShadowMount;
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