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Editor state data structures for the CodeMirror code editor

The next generation of events handling for javascript! New: abstract away the network!

A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.

Node.js atomic and non-atomic counters, rate limiting tools, protection from DoS and brute-force attacks at scale

A fast, framework-agnostic undo/redo core library powered by Mutative JSON Patch

A simple in-memory filesystem. Holds data in a javascript object.

[type-definitions]: https://github.com/jestjs/jest/blob/main/packages/jest-types/src/Circus.ts

ECMAScript (ESTree) AST walker

Vendor-neutral telemetry contracts and typed schema utilities for pi

Tiny, simple, and robust technique for defining and acting with local states

A WebGL memory tracker

In-memory abstract-level database for Node.js and browsers

Connectic is a javascript library for pub sub messaging, event handling, and data synchronization in real-time applications.

Platform-agnostic service for storing large, infrequently accessed controller data

Official Zernio adapter for Chat SDK — build chatbots across Instagram, Facebook, Twitter/X, Telegram, WhatsApp, Bluesky, and Reddit through a single integration

Simple implmentation of Stream.Readable and Stream.Writable holding the data in memory.

Implementation of the AG-UI protocol for Mastra.

The app-level caching seam for the Agent Architecture Board (docs/initiatives/caching-layer.md): createAppCaches builds the named, typed in-memory read-through caches (layered-loader) the services consume via the kernel AppCaches port, with optional distr

React hook that persists data in localStorage