/**
 * Get the output path for a file based on the output directory or file.
 * If outDirOrFile is a filepath, it will be returned as is.
 * If outDirOrFile is a directory, the file will be placed in that directory.
 */
export declare function getOutputPath(filepath: string, outDirOrFile: string | undefined | null, opts?: {
    create?: boolean;
}): string;
export declare function getFileName(filepath: string): string;
export declare function getDirName(filepath: string): string;
export declare type GLTFFileCallback = (file: string) => void | Promise<void>;
export declare function foreachGLTF(args: string | string[], callback: GLTFFileCallback): Promise<void>;
export declare function replaceExtension(filepath: string, newExtension: string): string;
export declare function isDirectory(path: string): boolean;
/**
 * Ensure that a path is a directory.
 * If the directory does not exist, it will be created.
 */
export declare function ensureIsDirectory(path: string): string;
/** Recursively delete a directory, retrying on EBUSY/EPERM (Windows file handle delays).
 *  Silently gives up after all retries fail — temp dirs will be cleaned up by the OS. */
export declare function safeRmDir(dirPath: string, retries?: number, delayMs?: number): Promise<void>;