@platformatic/vfs is a Node.js library that implements a fully‑featured virtual file system with an `fs`‑compatible API, supporting in‑memory, SQLite‑backed, or sandboxed real‑FS storage, mount points, overlay mode, symlinks, and optional module‑loading hooks that let `require()`/`import` and core `fs` functions transparently read from the VFS. It’s aimed at developers who need isolated or persistent file‑system environments—for testing, tooling, or applications that want to run code against virtual files without touching the host disk.