JavaScript file system utilities for Node.js and browser.

npm i memfs

• Documentation
  • In-memory Node.js fs API
  • In-memory browser File System (Access) API
  • fs to File System (Access) API adapter
  • File System (Access) API to fs adapter
  • experimental crudfs a CRUD-like file system abstraction
  • experimental casfs Content Addressable Storage file system abstraction
  • Directory snapshot utility
  • print directory tree to terminal
• Code reference
• Test coverage

• Git in browser, which writes to a real folder
• Git in browser, which writes to OPFS file system
• Git on in-memory file system
• fs in browser, creates a .tar file in real folder
• fs in browser, synchronous API, writes to real folder
• crudfs and casfs in browser and Node.js interoperability

• unionfs - creates a union of multiple filesystem volumes
• fs-monkey - monkey-patches Node's fs module and require function
• linkfs - redirects filesystem paths
• spyfs - spies on filesystem actions

Apache 2.0