Returns true if a value is a plain object, array or function.

JSON Web Token implementation (symmetric and asymmetric)

A lightweight XML Document class for JavaScript.

Model-facing subagent delegation tool over the ctx.subagents seam

rawStream.pipe(JSONStream.parse()).pipe(streamOfObjects)

semantic-release plugin to generate changelog content with conventional-changelog

qrcode encoding in javascript

Windows MetaFile (WMF) parser

Utility to help find out why Node isn't exiting

Per-call sandbox policy resolver and current model context: deployment fallbacks plus each session's mode and workspace root, shared by every enforcing capability family

A robust & optimized `String.prototype.includes` polyfill, based on the ECMAScript 6 specification.

A library for the MQTT protocol

This is the vanilla JS of Paper Shaders. You can also find framework specific wrappers

Abstract process-sandbox seam (ctx.sandbox) for the DeepSeek Harness: same-world confinement vocabulary and the SandboxProvider contract

Helper functions around Function call/apply/bind, for use in `call-bind`

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

OpenTelemetry Jaeger propagator provides HTTP header propagation for systems that are using Jaeger HTTP header format.

Tool-call timeout policy: a tools/execute wrapper that arms a per-tool deadline on exec.signal and returns TOOL_TIMEOUT when it wins

Select single or multiple images, with cropping option

Port of jQuery.extend for node.js and the browser