import type { ExtendedCSSStyleSheet } from '@fluentui/merge-styles';
import type { MergeStylesShadowRootContextValue } from '../contexts/MergeStylesShadowRootContext';
export type AdoptedStylesheetHook = (stylesheetKey: string) => boolean;
export type AdoptedStylesheetExHook = (stylesheetKey: string, shadowCtx: MergeStylesShadowRootContextValue | undefined, rootMergeStyles: Map<string, ExtendedCSSStyleSheet>, win: Window | undefined) => boolean;
/**
 * Use adopted stylesheets in the parent shadow root.
 */
export declare const useAdoptedStylesheet: AdoptedStylesheetHook;
/**
 * Optimization for specific cases like nested customizables.
 */
export declare const useAdoptedStylesheetEx: AdoptedStylesheetExHook;