export declare function isPackageExist(packageName: string, registry?: string): Promise<string | false>;
export declare function isPackageDeprecated(packageName: string, registry?: string): Promise<string>;
export declare function semverDecrease(version: string): string;
/**
 * 插件存在 hotfix 版本，从 tools 版本号向上找当前插件版本号
 * tools 存在 hotfix 版本，从 tools 版本号向下找当前插件版本号
 * 限制只在当前小版本号范围内寻找
 */
export declare function getAvailableVersion(packageName: string, currentVersion: string, registry?: string): Promise<string>;
export declare function getPackageManager(cwd?: string): Promise<"pnpm" | "yarn" | "npm">;