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A js library to generate and parse UUIDs,TimeUUIDs and generate TimeUUID based on Date for range selections

Package Exports

  • uuid-js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (uuid-js) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

UUID-js

A js library to generate and parse UUID's, TimeUUID's and generate empty TimeUUID's based on TimeStamp for range selections.

var UUID = require('uuid-js');

var uuid4 = UUID.create(); // Generate a V4 UUID

console.log( uuid4.toString() );
// Prints: 896b677f-fb14-11e0-b14d-d11ca798dbac

var uuid1 = UUID.create(1); // Generate a V1 TimeUUID
console.log( uuid1.toString() );

var today = new Date().getTime();
var last30days = (new Date().setDate( today.getDate() - 30 )).getTime();

var rangeStart = UUID.firstUUIDForTime( last30days );
var rangeEnd = UUID.lastUUIDForTime( today );

// Example using cassandra
var query = ...( "select first 50 reversed ?..? from user_twits where key=?", [ rangeStart, rangeEnd, "patricknegri" ]);

Instalation

$ npm install uuid-js

Functions List

These are available just with require and return an instance of the UUID object:

UUID.create(4); // Generate V4 UUID

UUID.create(1); // Generate V1 TimeUUID

UUID.fromTime( time, last ); // Generate a V1 empty TimeUUID from a Date object (Ex: new Date().getTime() )

UUID.firstUUIDForTime( time ); // Same as fromTime but first sequence

UUID.lastUUIDForTime( time ); // Same as fromTime but last sequence

UUID.fromURN( strId ); // Generate a UUID object from string

UUID.fromBytes( ints ); // Generate a UUID object from bytes

UUID.fromBinary( binary ); // Generate a UUID object from binary

Methods List

These must be called on an instance of the UUID object:

aUUID.fromParts( timeLow, timeMid, timeHiAndVersion, clockSeqHiAndReserved, clockSeqLow, node );

aUUID.toString(); // hex string version of UUID

aUUID.toURN(); // same as hex, but with urn:uuid prefix

aUUID.toBytes(); // convert to bytes

Tests

make test

Contributors

This work was based RFC and by the work of these people.