TSID

Timestamp identifier

Zero dependency, compact, and sort-order-invariant identifier using a monotonic timestamp, and clock id.

Most useful for creating unique record ids while still encode their order of creation.

Inspired by AtProto TIDs, but a bit simler.

Features

• Unique ids within the same millisecond.
• Unique ids between machines / processes / threads.

Example

TSID.timestamp("3jj55ss4wcs2n") // 1670265293599

Usage

import TSID from 'tsid'

const id1 = TSID.next()
const id2 = TSID.next()

console.log(id1 == id2) // false
console.log(TSID.timestamp(id1) === TSID.timestamp(id2))

API

const tsid = TSID.next()

Create a new identifier. similar to Date.now().toString() but better.

const timestamp = TSID.timestamp("3jj55ss4wcs2n")

Read timestamp (milliseconds) from a tsid string