/**
 * Server-side rendering utility. Generates the harmonised scrollbar HTML attributes so a
 * product's server can spread them onto the server-rendered `<html>` element. This avoids the
 * flash of un-harmonised scrollbars that would otherwise occur while waiting for
 * `useScrollbarHarmonisation`'s client-only effect to run.
 *
 * @param input - A boolean overrides the appearance; an object supplies the product-resolved
 * `isEnabled` value without evaluating the shared gate. When omitted, the shared gate is used.
 *
 * @returns {Object} Object of HTML attributes to be applied to the document root
 */
export declare function getScrollbarHarmonisationHtmlAttrs(input?: boolean | {
    isEnabled: boolean;
    /**
     * Unused. Tracks are always transparent.
     */
    isTransparentEnabled?: boolean;
}): Record<string, string>;
export default getScrollbarHarmonisationHtmlAttrs;