ProseMirror editor state

Editor state data structures for the CodeMirror code editor

Bidirectional session synchronization for the Pi coding agent

Fake JavaScript timers

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

ECMAScript (ESTree) AST walker

Lightweight Babel AST traversal

function decorator which ensures that calls do not run simultaneously

Yjs encoding protocols

A collection of DOM-based utilities for synchronizing elements between JavaScript environments

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

Library to walk OAS 3 schema objects and call a callback

The typed facade BB plugin authors compile against. The root preserves the complete `BbPluginApi` and `BbSdk` contract; `./app` is the frontend runtime that `bb plugin build` replaces with BB's shared implementation.

HTTP State Management Utilities

Finite State Machines and Statecharts for the Modern Web.

Enter/exit a state

React API state management with offline-first persistence, synchronization, caching, and optimistic updates.

Spectrum UI components in React

[](https://npm.im/@dnd-kit/state)

Type-safe State Management Library for TypeScript/JavaScript