type IsType = boolean | number | string | null;
export declare function useBem(block: string | number): readonly [{
    b(): string;
    e(element: string | number | undefined, is?: IsType): string;
    m(modifier: string | number | undefined, is?: IsType): string;
    em(element: string | number, modifier: string | number | undefined, is?: IsType): string;
    bem(block: string | number, element?: string | number, modifier?: string | number, is?: boolean | number | string | null): string;
}];
export {};