JavaScript file system utilities for Node.js and browser. Implementation of in-memory Node.js fs module API and in-memory browser File System API, as well as adapters from fs module to File Sytem API and from File Sytem API to fs module.
npm i memfs
fs APIfs to File System (Access) API adapterfs adaptersnapshot utilityprint directory tree to terminalfs in browser, creates a .tar file in real folderfs in browser, synchronous API, writes to real folderunionfs - creates a union of multiple filesystem volumesfs-monkey - monkey-patches Node's fs module and require functionlinkfs - redirects filesystem pathsspyfs - spies on filesystem actionsApache 2.0
mock-fs is a package that provides a mock file system for Node.js. It is similar to memfs in that it allows you to create an in-memory file system for testing purposes. However, mock-fs overrides the native fs module, while memfs provides a separate file system instance.
unionfs is a package that can combine multiple file systems into a single cohesive file system interface. It can be used with memfs to overlay an in-memory file system on top of the real file system, providing a way to mix real and virtual file system operations.
fs-mock is another in-memory file system module for Node.js. It offers similar functionality to memfs, allowing you to mock the fs module for testing. It differs in API and implementation details, and the choice between fs-mock and memfs may come down to personal preference or specific use-case requirements.
FAQs
In-memory file-system with Node's fs API.
The npm package memfs receives a total of 11,603,040 weekly downloads. As such, memfs popularity was classified as popular.
We found that memfs demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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