export declare function getFocusStyle(theme: any, inset?: number, position?: string, radius?: string): {
    outline: string;
    selectors: {
        '::-moz-focus-inner': {
            border: string;
        };
        '.ms-Fabric--isFocusVisible &:focus:after': {
            content: string;
            left: number;
            top: number;
            bottom: number;
            right: number;
            border: string;
            borderRadius: string;
            outline: string;
            zIndex: number;
        };
    };
};