A source map library purpose-build for the Parcel bundler with a focus on fast combining and manipulating of source-maps.

Subprocess seam (ctx.subprocess) for the DeepSeek Harness — managed process groups, bounded spill-backed output, and escalated kills behind one abstract service

Fixes stack traces for files with source maps

LangChain.js adapters for Model Context Protocol (MCP)

Ellipsizes a string at the nearest whitespace character near the end of allowed length

Enhance Reselect selectors with deeper memoization and cache management

tween-one anim component for react

A CLI tool for arethetypeswrong.github.io

Combined session query service contract with concrete reads, traces, and filters

provides locking mechanism to sync across browser tabs

LEB128 utilities for Node

Optional TypeScript-Go semantic refinement sidecar for Fallow

Build an absolute URL from a base URL and a relative URL (RFC 1808). No dependencies!

Lifecycle-bound per-message rating and note sidecar for the DeepSeek Harness

CSS Object Model implementation and CSS parser

One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers

Traverse an ESTree-compliant AST

Run multiple promise-returning & async functions with limited concurrency using native ES9

Background job registry (ctx.jobs) for the DeepSeek Harness — shared ids, owner isolation, polling, cancellation, and completion listeners for long-running tool work

lezer-based C++ grammar