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lockfile
Advanced tools
Changelog
1.0.4
Readme
A very polite lock file utility, which endeavors to not litter, and to wait patiently for others.
var lockFile = require('lockfile')
// opts is optional, and defaults to {}
lockFile.lock('some-file.lock', opts, function (er) {
// if the er happens, then it failed to acquire a lock.
// if there was not an error, then the file was created,
// and won't be deleted until we unlock it.
// do my stuff, free of interruptions
// then, some time later, do:
lockFile.unlock('some-file.lock', function (er) {
// er means that an error happened, and is probably bad.
})
})
Sync methods return the value/throw the error, others don't. Standard node fs stuff.
All known locks are removed when the process exits. Of course, it's possible for certain types of failures to cause this to fail, but a best effort is made to not be a litterbug.
Acquire a file lock on the specified path
Acquire a file lock on the specified path
Close and unlink the lockfile.
Close and unlink the lockfile.
Check if the lockfile is locked and not stale.
Callback is called with cb(error, isLocked)
.
Check if the lockfile is locked and not stale.
Returns boolean.
A number of milliseconds to wait for locks to expire before giving up.
Only used by lockFile.lock. Poll for opts.wait
ms. If the lock is
not cleared by the time the wait expires, then it returns with the
original error.
When using opts.wait
, this is the period in ms in which it polls to
check if the lock has expired. Defaults to 100
.
A number of milliseconds before locks are considered to have expired.
Used by lock and lockSync. Retry n
number of times before giving up.
Used by lock. Wait n
milliseconds before retrying.
FAQs
A very polite lock file utility, which endeavors to not litter, and to wait patiently for others.
The npm package lockfile receives a total of 995,038 weekly downloads. As such, lockfile popularity was classified as popular.
We found that lockfile demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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