import type { ShadowConfig } from '@fluentui/merge-styles';
export type ShadowConfigHook = (stylesheetKey: string, inShadow: boolean, win?: Window) => ShadowConfig;
/**
 * Get a shadow config.
 * @param stylesheetKey - Globally unique key
 * @param win - Reference to the `window` global.
 * @returns ShadowConfig
 */
export declare const useShadowConfig: ShadowConfigHook;