import { FileInput } from './FileInput';
import { Input, TrackOptions } from './Input';
export declare class DirectoryInput implements Input {
    private readonly path;
    private readonly exerciseSlug;
    private trackOptions;
    constructor(path: string, exerciseSlug: string, trackOptions?: TrackOptions);
    files(n?: number, preferredExtension?: string): Promise<FileInput[]>;
    read(n?: number, preferredExtension?: string): Promise<string[]>;
    set fileExtensions(next: RegExp);
    set testFilePattern(next: RegExp);
    set configurationFilePattern(next: RegExp);
}