export declare function withExts(file: string, extensions: string[]): string[];
export declare function removeExt(file: string): string;
export declare const findFirstExistedFile: (files: string[]) => string | null;
export declare const resolveFile: (fileName: string) => string;
export declare const isDirectory: (dirname: string) => Promise<boolean>;
export declare const normalizePath: (filepath: string, baseDir: string) => string;