wasmfs

Node fs-like module backed by IndexedDB with a memory fallback when IndexedDB is unavailable.

Install

bun install

Test

bun test

Current API Coverage

Implemented (callback + delegated promises):

• access / chmod
• mkdir / readdir / readFile / writeFile / appendFile
• rename / realpath / stat
• unlink / rmdir / rm
• copyFile / cp
• truncate
• open / close
• read / write (buffer and string write forms)
• fstat / ftruncate / fsync / fdatasync

Permissions model on virtual nodes:

• read
• write
• execute

Sync API

Sync methods intentionally throw ENOTSUP with guidance to use fs.promises.*, because IndexedDB is asynchronous by nature.

Run Example

bun run index.ts