import { CSSRules } from "@microsoft/fast-jss-manager";
/**
 * Returns the selector for the browser native :focus-visible implementation
 */
export declare function applyFocusVisibleSelector(selector?: string): string;
/**
 * Returns the selector for the focus-visible polyfill
 */
export declare function applyFocusVisiblePolyfillSelector(selector?: string): string;
export declare function applyFocusVisible<T>(styles: CSSRules<T>): CSSRules<T>;
export declare function applyFocusVisible<T>(selector: string, styles: CSSRules<T>): CSSRules<T>;