import { ReactNode } from 'react';
export interface ShadowChromeMountProps {
    children: ReactNode;
    /** Full CSS text injected as a single shadow <style> (updates when this string changes). */
    shadowCss: string;
    /** Extra class names on the inner portal root (theme + layout). */
    rootClassName: string;
}
/**
 * Attaches an open shadow root, injects devtools CSS, and portals React children inside.
 */
export declare function ShadowChromeMount({ children, shadowCss, rootClassName, }: ShadowChromeMountProps): import("react/jsx-runtime").JSX.Element;
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