export type SupportedTailwindcssMajorVersion = 4;
export declare const DEFAULT_TAILWINDCSS_GENERATOR_MAJOR_VERSION: SupportedTailwindcssMajorVersion;
export declare function normalizeSupportedTailwindcssMajorVersion(version: number | undefined): SupportedTailwindcssMajorVersion | undefined;
export declare function readInstalledPackageMajorVersion(packageName: string, base: string): SupportedTailwindcssMajorVersion | undefined;