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

User-side undo/redo for DeepSeek Harness (dsh): the /undo command rolls the transcript back to before the last message and /redo restores it.

Library to walk OAS 3 schema objects and call a callback

iTwin.js frontend components

Select values from databases using asynchronous selectors.

Session-header background-job list: live registry state mirrored from session/jobs frames

Persistent workspace undo and redo for Pi

Multi-library undo management that also preserves and restores presentational state

legend-state

Headless, framework-agnostic undo/redo that stores inverse operations, not snapshots — with grouped transactions and checkpoints.

Deep watch objects (using Proxy) and emit diff asynchronously.

Advanced autosave utilities for React Hook Form with debounce, validation, key mapping, diff handling, and comprehensive testing support.

Lightweight Babel AST traversal

A TypeScript library for managing AI conversation state

PostgreSQL state adapter for Chat SDK — production subscriptions, distributed locks, cache, lists, and queues

Spectrum UI components in React

Mutable wrappers for nested immutable values with optional undo/redo history and transaction support

Prosemirror bindings for Yjs

Listen to realtime updates to your PostgreSQL database

A performant, customizable React Native signature canvas with advanced error handling, WebView optimization, and TypeScript support for iOS, Android, and Expo