rrweb's component to take a snapshot of DOM, aka DOM serializer

Editor state data structures for the CodeMirror code editor

Lexer / tokenizer

ECMAScript (ESTree) AST walker

Advanced JavaScript objects serialization.

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

Runtime engine for Stoke workflows.

Yjs encoding protocols

The Markdown engine for the modern web. Parse Markdown with components, attributes and plugins to a compact AST, at build time or runtime, and render with Vue, React, Svelte, Angular, HTML or ANSI. Streaming-ready for AI output.

Vendor-neutral telemetry contracts and typed schema utilities for pi

Library to walk OAS 3 schema objects and call a callback

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

Parses Emmet CSS abbreviation into AST tree

Typed, serializable workflows that compose multiple modules. A journey declares entry/exit transitions between modules and owns shared state; modules stay journey-unaware.

Finite State Machines and Statecharts for the Modern Web.

State container for aspen trees

Lightweight Babel AST traversal

Declarative, serializable transition guard + affordance layer on top of @inixiative/json-rules

Serializable data contracts shared by Drever's compiler and runtime.

Enter/exit a state