In-memory file-system with Node's fs API. 

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import { Node, Link, File } from './node';

import { TSetTimeout } from './setTimeoutUnref';

import * as misc from './node/types/misc';

import * as opts from './node/types/options';

import { FsCallbackApi, WritevCallback } from './node/types/FsCallbackApi';

import type { PathLike, symlink } from 'fs';

import type { FsPromisesApi, FsSynchronousApi } from './node/types';

export type TData = TDataOut | ArrayBufferView | DataView;

export type TTime = number | string | Date;

export type TCallback<TData> = (error?: IError | null, data?: TData) => void;

export type TFlagsCopy = typeof constants.COPYFILE_EXCL | typeof constants.COPYFILE_FICLONE | typeof constants.COPYFILE_FICLONE_FORCE;

export interface IAppendFileOptions extends opts.IFileOptions {

export interface IWatchOptions extends opts.IOptions {

export declare function filenameToSteps(filename: string, base?: string): string[];

export declare function pathToSteps(path: PathLike): string[];

export declare function dataToStr(data: TData, encoding?: string): string;

export declare function toUnixTimestamp(time: any): any;

type DirectoryContent = string | Buffer | null;

export interface DirectoryJSON<T extends DirectoryContent = DirectoryContent> {

    [key: string]: DirectoryContent | NestedDirectoryJSON;

export interface NestedDirectoryJSON<T extends DirectoryContent = DirectoryContent> {

    [key: string]: T | NestedDirectoryJSON;

export declare class Volume implements FsCallbackApi, FsSynchronousApi {

    static fromJSON(json: DirectoryJSON, cwd?: string): Volume;

    static fromNestedJSON(json: NestedDirectoryJSON, cwd?: string): Volume;

     * Global file descriptor counter. UNIX file descriptors start from 0 and go sequentially

     * up, so here, in order not to conflict with them, we choose some big number and descrease

     * the file descriptor of every new opened file.

     * @todo This should not be static, right?

    ReadStream: new (...args: any[]) => misc.IReadStream;

    WriteStream: new (...args: any[]) => IWriteStream;

        Node: new (...args: any[]) => Node;

        Link: new (...args: any[]) => Link;

        File: new (...args: any[]) => File;

    createLink(parent: Link, name: string, isDirectory?: boolean, perm?: number): Link;

    createNode(isDirectory?: boolean, perm?: number): Node;

    getLink(steps: string[]): Link | null;

    getLinkOrThrow(filename: string, funcName?: string): Link;

    getResolvedLink(filenameOrSteps: string | string[]): Link | null;

    getResolvedLinkOrThrow(filename: string, funcName?: string): Link;

    resolveSymlinks(link: Link): Link | null;

     * @todo This is not used anymore. Remove.

    toJSON(paths?: PathLike | PathLike[], json?: {}, isRelative?: boolean, asBuffer?: boolean): DirectoryJSON;

    toJSON(paths?: PathLike | PathLike[], json?: {}, isRelative?: boolean, asBuffer?: boolean): DirectoryJSON<string | null>;

    fromJSON(json: DirectoryJSON, cwd?: string): void;

    fromNestedJSON(json: NestedDirectoryJSON, cwd?: string): void;

    toTree(opts?: ToTreeOptions): string;

    mountSync(mountpoint: string, json: DirectoryJSON): void;

    openSync(path: PathLike, flags: TFlags, mode?: TMode): number;

    open(path: PathLike, flags: TFlags, /* ... */ callback: TCallback<number>): any;

    open(path: PathLike, flags: TFlags, mode: TMode, callback: TCallback<number>): any;

    close(fd: number, callback: TCallback<void>): void;

    readSync(fd: number, buffer: Buffer | ArrayBufferView | DataView, offset: number, length: number, position: number | null): number;

    readv(fd: number, buffers: ArrayBufferView[], callback: misc.TCallback2<number, ArrayBufferView[]>): void;

    readv(fd: number, buffers: ArrayBufferView[], position: number | null, callback: misc.TCallback2<number, ArrayBufferView[]>): void;

    readvSync(fd: number, buffers: ArrayBufferView[], position: number | null): number;

    readFileSync(file: TFileId, options?: opts.IReadFileOptions | string): TDataOut;

    readFile(id: TFileId, callback: TCallback<TDataOut>): any;

    readFile(id: TFileId, options: opts.IReadFileOptions | string, callback: TCallback<TDataOut>): any;

    writeSync(fd: number, buffer: Buffer | ArrayBufferView | DataView, offset?: number, length?: number, position?: number): number;

    writeSync(fd: number, str: string, position?: number, encoding?: BufferEncoding): number;

    write(fd: number, buffer: Buffer | ArrayBufferView | DataView, callback: (...args: any[]) => void): any;

    write(fd: number, buffer: Buffer | ArrayBufferView | DataView, offset: number, callback: (...args: any[]) => void): any;

    write(fd: number, buffer: Buffer | ArrayBufferView | DataView, offset: number, length: number, callback: (...args: any[]) => void): any;

    write(fd: number, buffer: Buffer | ArrayBufferView | DataView, offset: number, length: number, position: number, callback: (...args: any[]) => void): any;

    write(fd: number, str: string, callback: (...args: any[]) => void): any;

    write(fd: number, str: string, position: number, callback: (...args: any[]) => void): any;

    write(fd: number, str: string, position: number, encoding: BufferEncoding, callback: (...args: any[]) => void): any;

    writev(fd: number, buffers: ArrayBufferView[], callback: WritevCallback): void;

    writev(fd: number, buffers: ArrayBufferView[], position: number | null, callback: WritevCallback): void;

    writevSync(fd: number, buffers: ArrayBufferView[], position: number | null): number;

    writeFileSync(id: TFileId, data: TData, options?: opts.IWriteFileOptions): void;

    writeFile(id: TFileId, data: TData, callback: TCallback<void>): any;

    writeFile(id: TFileId, data: TData, options: opts.IWriteFileOptions | string, callback: TCallback<void>): any;

    copyFileSync(src: PathLike, dest: PathLike, flags?: TFlagsCopy): void;

    copyFile(src: PathLike, dest: PathLike, callback: TCallback<void>): any;

    copyFile(src: PathLike, dest: PathLike, flags: TFlagsCopy, callback: TCallback<void>): any;

    linkSync(existingPath: PathLike, newPath: PathLike): void;

    link(existingPath: PathLike, newPath: PathLike, callback: TCallback<void>): void;

    unlink(path: PathLike, callback: TCallback<void>): void;

    symlinkSync(target: PathLike, path: PathLike, type?: symlink.Type): void;

    symlink(target: PathLike, path: PathLike, callback: TCallback<void>): any;

    symlink(target: PathLike, path: PathLike, type: symlink.Type, callback: TCallback<void>): any;

    realpathSync(path: PathLike, options?: opts.IRealpathOptions | string): TDataOut;

    realpath(path: PathLike, callback: TCallback<TDataOut>): any;

    realpath(path: PathLike, options: opts.IRealpathOptions | string, callback: TCallback<TDataOut>): any;

    lstatSync(path: PathLike): Stats<number>;

        throwIfNoEntry?: true | undefined;

    lstat(path: PathLike, callback: TCallback<Stats>): void;

    lstat(path: PathLike, options: opts.IStatOptions, callback: TCallback<Stats>): void;

    statSync(path: PathLike): Stats<number>;

  "description": "In-memory file-system with Node's fs API.",

  "homepage": "https://github.com/streamich/memfs",

		{
		"name": "memfs",
		"version": "4.4.0",
		"version": "4.5.0",
		"description": "In-memory file-system with Node's fs API.",
		@@ -5,0 +5,0 @@ "keywords": [

		@@ -43,8 +43,8 @@ /// <reference types="node" />
		export declare function toUnixTimestamp(time: any): any;
		type DirectoryContent = string \| null;
		export interface DirectoryJSON {
		[key: string]: DirectoryContent;
		type DirectoryContent = string \| Buffer \| null;
		export interface DirectoryJSON<T extends DirectoryContent = DirectoryContent> {
		[key: string]: T;
		}
		export interface NestedDirectoryJSON {
		[key: string]: DirectoryContent \| NestedDirectoryJSON;
		export interface NestedDirectoryJSON<T extends DirectoryContent = DirectoryContent> {
		[key: string]: T \| NestedDirectoryJSON;
		}
		@@ -111,3 +111,3 @@ /**
		private _toJSON;
		toJSON(paths?: PathLike \| PathLike[], json?: {}, isRelative?: boolean, asBuffer?: boolean): DirectoryJSON;
		toJSON(paths?: PathLike \| PathLike[], json?: {}, isRelative?: boolean, asBuffer?: boolean): DirectoryJSON<string \| null>;
		fromJSON(json: DirectoryJSON, cwd?: string): void;
		@@ -114,0 +114,0 @@ fromNestedJSON(json: NestedDirectoryJSON, cwd?: string): void;

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