Virtual File System for Node.js by mcollina · Pull Request #61478 · nodejs/node

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@nodejs-github-bot added lib / src

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Jan 22, 2026

@avivkeller avivkeller added fs

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Jan 22, 2026

avivkeller

@mcollina 

Signed-off-by: Matteo Collina <hello@matteocollina.com>

e-dant

VFS file descriptors now use bit 30 (0x40000000) to distinguish them
from real OS file descriptors. This avoids any possibility of collision
with real fds while keeping VFS fds as valid positive integers, which
is required by unix conventions. Inspired by Yarn's MountFS approach.

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Apr 7, 2026

@mcollina

tniessen

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@mcollina @tniessen 

Co-authored-by: Tobias Nießen <tniessen@tnie.de>

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Apr 16, 2026