Issue #667  (JS Utils, AI Tools, Build Tools)04/30/26

 

JavaScript Utilities

@pinojs/redact — A utility that lets you redact objects in JavaScript apps safely, using selective cloning rather than mutating the original, ensuring immutability and strong performance.

View Transitions Mock — A non-visual polyfill for Same-Document View Transitions, providing a spec-compliant JavaScript implementation, but without the animation bits.

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Formisch — A framework-agnostic, schema-based, headless form library that manages form state and validation, is type-safe, fast by default, and has a small bundle size due to its modular design.

Boneyard — A skeleton loading library that offers pixel-perfect skeleton loading screens, extracted from your real UI, with no manual measurement and has support for React, Preact, Vue, Svelte 5, Angular, and React Native.

crashcat — A physics engine for JavaScript, built for games, simulations, and creative websites, with features like rigid body simulation, support for different shapes, continuous collision detection, and lots more.

officeParser — A robust, strictly-typed Node.js and browser library for parsing office files that produces a clean, hierarchical Abstract Syntax Tree (AST) with rich metadata, text formatting, and full attachment support.

mdcode — A TypeScript port of an older project, providing a Markdown code block authoring tool for extracting, updating, and managing code blocks within Markdown documents.

whatsapp-api-js — A lightweight, dependency-free, efficient TypeScript library for interacting with the WhatsApp Cloud API.

AI Tools, LLMs, etc.

Bifrost — a high-performance AI gateway that unifies access to 15+ providers (OpenAI, Anthropic, AWS Bedrock, Google Vertex, and more) through a single OpenAI-compatible API.

FastMCP — A TypeScript framework for building MCP servers capable of handling client sessions, helping to build MCP servers quickly without dealing with low-level implementation details.

Can I Run AI Locally? — A one-stop resource that shows you which AI models your machine can actually run, searchable, and filterable by grades, tasks, providers, and licenses.

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A2UI — An open source project, complete with a format optimized for representing updatable agent-generated UIs and an initial set of renderers, that allows agents to generate or populate rich user interfaces.

OpenSkills — A single CLI tool that brings Anthropic's skills system to every AI coding agent, including Claude Code, Cursor, Windsurf, Aider, Codex, and anything that can read AGENTS.md.

claude-devtools — A tool for debugging Claude Code sessions that reads session transcripts, inspects Claude Code logs, tracks token usage, and sees everything the terminal hides.

Stagehand — An open source AI browser automation framework and SDK that uses AI to make your browser agents resilient, readable, and production-ready.

Trellis — A team AI coding harness for progressive specs, custom workflows, task context, and memory across Claude Code, Cursor, Codex, OpenCode, Pi Agent, and more.

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Build Tools, Bundlers, etc.

Twoslash — A markup format for TypeScript code, ideal for creating self-contained code samples in documentation, which let the TypeScript compiler do the extra leg-work.

Vite+ — A new unified toolchain and entry point to web application development that manages your runtime, package manager, and frontend toolchain.

frak — A tiny JavaScript binary for deployments that don’t need containers or repos, just fast, reliable file transfer from point A to point B.

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Syncpack — A command-line tool for consistent dependency versions in large JavaScript monorepos, enabling you to find and fix dependency version mismatches, enforce a single version policy, and lots more.

Deno Sandbox — Instant Linux microVMs for Deno Deploy, where each sandbox boots in under a second, is API driven from the @deno/sandbox SDK, and is torn down as soon as you're done.

Frontmatter — A tool that automates the generation of the data contract and templates for backend integration in Astro projects.

Davia — An open source tool designed for AI coding agents to generate interactive internal documentation for your codebase.

minimal-pwa — A starter project that contains the minimal set of files for a Progressive Web App" to be installable on Android and iOS and the smallest possible manifest.json and service worker to trigger the install flow on Chrome.

Commercial Apps & Classifieds