export declare function normalizeEmptyTailwindCustomVariants(css: string): string;
export declare function filterApplyOnlyGeneratedCss(css: string, source: string, options?: {
    preserveVariables?: boolean | undefined;
    preferScopedRules?: boolean | undefined;
}): string;
export declare function shouldFilterApplyOnlyGeneratedCss(_majorVersion: number | undefined, target: string, source: string, options: {
    hasGeneratedCss: boolean;
    hasGeneratedMarkers: boolean;
}): boolean;