CRDTs

A CRDT library for JavaScript.

Work In Progress

This module provides a set of Conflict-Free Replicated Data Types for your JavaScript programs. All CRDTs in this library, except G-Counter, are currently operation-based.

Implemented CRDTs:

• G-Counter
• PN-Counter
• G-Set
• 2P-Set
• OR-Set
• LWW-Set

Usage

npm install crdts

const GCounter = require('crdts').GCounter
const PNCounter = require('crdts').PNCounter
const GSet = require('crdts').GSet
const TwoPSet = require('crdts').TwoPSet
const ORSet = require('crdts').ORSet
const LWWSet = require('crdts').LWWSet
 
// Or:
const { GSet, ORSet, LWWSet } = require('crdts')

See the source code for each CRDT for the APIs and tests for usage examples.

Inheritance

           +-----------++-----------++----------++---------++------------++------------+
Data Type  |  OR-Set   ||  LWW-Set  ||  2P-Set  ||  G-Set  || G-Counter  || PN-Counter |
           +-----------++-----------++----------++---------++------------++------------+
Base Class |                    CmRDT-Set                  |             --            |
           |-----------------------------------------------+---------------------------+
CRDT Type  |                 Operation-Based               | State-based               |
           +-----------------------------------------------+---------------------------+

CRDTs

CRDT research: https://github.com/ipfs/research-CRDT