A MobX powered state management solution based on data trees with first class support for Typescript, support for snapshots, patches and much more

(WIP) Validated Replicated State Machine built on a custom lightweight CRDT. Combine CRDT offline capabilities with strict business logic validation, state reconciliation, and audit trails.

json-joy is a library that implements cutting-edge real-time and collaborative editing algorithms and utilities for JSON data models, with a focus on developing the JSON CRDT (Conflict-free Replica…

Proxy-based ergonomics for Yjs (CRDT): use Y.Map and Y.Array like plain JS objects and arrays.

A fast lightweight alternative to MobX-State-Tree + Y.js two-way binding

Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.

Extremely fast Vite-compatible web build tool written in Rust

A typescript transformer that automatically generates validation code from your types.

Legend-State is a super fast and powerful state library that enables fine-grained reactivity and easy automatic persistence

Authentication, simple and clean

Async Context for JavaScript

Make your JSON data collaborative and version-controlled with CRDTs

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

A simple, safe, JavaScript Filter Expression compiler for end-users

Function argument validation for humans

🌳 Tiny & elegant JavaScript HTTP client based on the Fetch API

A collection of essential TypeScript types

📊 Get all of my CSS Cheatsheets from here which I have created & shared on twitter. Thanks for the support. 💜

🎯 React library for building workflow editors, flow charts and diagrams. Maintained by @goodcodeus.

State Management and Multiplayer Networking for Turn-Based Games

High-performance JavaScript polyline simplification library

Polygon and line clipping and offsetting library (Javascript) - a port of Angus Johnson's clipper

🗳️ A implementation of the ShadowRealm API Proposal, a JavaScript sandbox, test with TC39 Test262 cases.

Shared data types for building collaborative software

❌ Kill the process running on given port

This library can be used to construct a visibility polygon for a set of line segments. Based on the excellent https://github.com/byronknoll/visibility-polygon-js

🧙‍♀️ Move Fast and Break Nothing. End-to-end typesafe APIs made easy.

A fast and compact JSON alternative to store, pass or retrieve data

Avro for JavaScript ⚡