Node-graceful-fs module normalizes behavior across different platforms and environments, and makes filesystem access more resilient to errors: * queues up open and readdir calls, and retries them once something closes if there is an EMFILE error from too many file descriptors. * fixes lchmod for Node versions prior to 0.6.2 * implements fs.lutimes if possible. Otherwise it becomes a noop. * ignores EINVAL and EPERM errors in chown, fchown or lchown if the user isn't root. * makes lchmod and lchown become noops, if not available. * retries reading a file if read results in EAGAIN error.

Node.js is an event-based server-side javascript engine.