import type { FsPath } from '../file-info/fs-path';
export declare abstract class Fs {
    abstract writeFile(filename: string, contents: string): void;
    abstract appendFile(filename: string, contents: string): void;
    abstract readFile(path: FsPath): string;
    abstract readDirectory(path: FsPath, filter?: 'none' | 'directory'): FsPath[];
    abstract removeDir(path: FsPath): void;
    abstract createDir(path: string): void;
    abstract exists(path: string): path is FsPath;
    abstract tmpdir(): string;
    join: (...paths: string[]) => string;
    abstract cwd(): string;
    abstract findFiles(path: FsPath, filename: string): FsPath[];
    abstract print(): void;
    /**
     * Used for finding the nearest `tsconfig.json`. It traverses through the
     * parent folder and includes the directory of the referenceFile.
     * @param referenceFile
     * @param filename
     */
    abstract findNearestParentFile(referenceFile: FsPath, filename: string): FsPath;
    relativeTo(from: string, to: string): string;
    getParent(fileOrDirectory: FsPath): FsPath;
    pathSeparator: "\\" | "/";
    /**
     * Reset the VirtualFs, has no effect on the real `DefaultFs`.
     */
    abstract reset(): void;
    abstract split(path: string): string[];
    abstract isAbsolute(path: string): boolean;
    abstract isFile(path: FsPath): boolean;
}