random-unique-id

Random Unique ID generates a 128-bit hex random id using crypto.randomBytes as an initial seed and then concatenating this with a micro-second timestamp and an incrementing counter and performing an SHA-256 hash to generate each unique id.

Random Unique IDs are intended to start from a truly random base and subsequently to be deterministic but pseudo random.

As of version 1.0.0 the id is lower case where previously it was upper case.

Usage

const randomUniqueId = require('random-unique-id')

var uniqueId = randomUniqueId()

uniqueId.id        // 62793faaa26a55036957b79e3ef6a51b
uniqueId.timestamp // 2017-05-29 21:18:31.844178

Random Unique ID returns an object with both the generated id and the timestamp that was used to generate it.

Accessing internal data

const randomUniqueId = require('random-unique-id')

randomUniqueId.count     // 0
randomUniqueId.id        // undefined
randomUnqiueId.seed      // 2ff54616eb6a411059031f77c2091771254e03daf4d3a431f70d13ba912e86b3
randomUniqueId.processId // 06c441675a07ae8790e09e520ac05e86bce6ded412020a82e54bb762b336935a


randomUniqueId()

randomUniqueId.count     // 1
randomUniqueId.id        // 7027ce98ca0ed9915841ac4fd7a74d42
randomUnqiueId.seed      // 2ff54616eb6a411059031f77c2091771254e03daf4d3a431f70d13ba912e86b3
randomUniqueId.processId // 06c441675a07ae8790e09e520ac05e86bce6ded412020a82e54bb762b336935a

Internal state data is exposed as properites of the unique id function. The id will always contain the last id generated or be undefined if no ids have been generated.