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ksuid
Advanced tools
Readme
A Node.js implementation of Segment's KSUID library.
You may also be interested in ksuid-cli
.
$ npm install ksuid
Require the module:
const KSUID = require('ksuid')
You can create a new instance synchronously:
const ksuidFromSync = KSUID.randomSync()
Or asynchronously:
const ksuidFromAsync = await KSUID.random()
You can also specify a specific time, either in milliseconds or as a Date
object:
const ksuidFromDate = KSUID.randomSync(new Date("2014-05-25T16:53:20Z"))
const ksuidFromMillisecondsAsync = await KSUID.random(1401036800000)
Or you can compose it using a timestamp and a 16-byte payload:
const crypto = require('crypto')
const yesterdayInMs = Date.now() - 86400 * 1000
const payload = crypto.randomBytes(16)
const yesterdayKSUID = KSUID.fromParts(yesterdayInMs, payload)
You can parse a valid string-encoded KSUID:
const maxKsuid = KSUID.parse('aWgEPTl1tmebfsQzFP4bxwgy80V')
Finally, you can create a KSUID from a 20-byte buffer:
const fromBuffer = new KSUID(buffer)
Once the KSUID has been created, use it:
ksuidFromSync.string // The KSUID encoded as a fixed-length string
ksuidFromSync.raw // The KSUID as a 20-byte buffer
ksuidFromSync.date // The timestamp portion of the KSUID, as a `Date` object
ksuidFromSync.timestamp // The raw timestamp portion of the KSUID, as a number
ksuidFromSync.payload // A Buffer containing the 16-byte payload of the KSUID (typically a random value)
You can compare KSUIDs:
todayKSUID.compare(yesterdayKSUID) // 1
todayKSUID.compare(todayKSUID) // 0
yesterdayKSUID.compare(todayKSUID) // -1
And check for equality:
todayKSUID.equals(todayKSUID) // true
todayKSUID.equals(yesterdayKSUID) // false
You can check whether a particular buffer is a valid KSUID:
KSUID.isValid(buffer) // Boolean
FAQs
Node.js implementation of K-Sortable Globally Unique IDs
We found that ksuid demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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