[question] What about locking the file until exit? about lockfile HOT 4 CLOSED

This module already makes a best-effort attempt to unlock files on process exit.

https://github.com/npm/lockfile/blob/master/lockfile.js#L33-L37

from lockfile.

Thanks for reply, but when I taskkill the process, the unlock didnt work.
Maybe I misunderstood the use case of file lock?

I want to lock a user file after user login,
and make sure the lock removed when the same process quit (including taskkill, etc)

from lockfile.

The process.on('exit') event doesn't fire if the process is killed by a unix signal.

You can use the module signal-exit, and add this:

var signalExit = require('signal-exit')
signalExit(function (code, signal) {
  if (signal)
    process.emit('exit')
})

var lockfile = require('lockfile')
// do whatever with lock files

Doing this requires that the program add os-level listeners to every possible fatal signal, and do some other hoop-jumping to make sure it doesn't accidentally prevent the exit when the signal should be fatal. That's what the signal-exit module does, but it would be excessive to do that in this module.

from lockfile.

Thanks! But I guess some of these signals are inavailable in Windows, :/ as well as killing the process from task monitor?

from lockfile.