Issue #673  (JS Utils, Build Tools, Mobile)06/11/26

 

JavaScript Utilities

View Transitions Toolkit — A collection of utility functions to more easily work with View Transitions, including feature detection, shim support, animation utilities, and lots more.

TypeScript XDK — A comprehensive TypeScript SDK for the X API (formerly Twitter API) with advanced features including smart pagination, multiple authentication methods, real-time streaming, and full type safety.

Render.js — A Node.js raytracing renderer with RenderMan RIB format support, implemented in pure JavaScript.

Credit Optimizer for AI Agents — Reduce AI agent costs by 30-75% with intelligent model routing. Analyzes task complexity and picks the optimal model tier automatically. No code changes needed — works with Manus, Devin, and any custom agent setup.     SPONSORED 

TSTyche — A type testing tool for TypeScript that ships with `describe()` and `test()` helpers, `expect` style assertions and a mighty test runner.

Tegaki — A utility and CLI that turns any font and text into animated handwriting, with integrations for React, Vue, Svelte, and SolidJS.

devalue — An alternative to JSON.stringify that can handle edge cases like cyclical references, repeated references, regular expressions, dates, and lots more.

Cleverbrush Framework — A monorepo of production-quality TypeScript libraries that includes a schema validation library that's faster than Zod, an object mapper, some async utilities, and more.

Temml — A lightweight LaTeX-to-MathML Core JavaScript conversion utility that can use local system fonts with coverage of LaTeX functions good as MathJax.

Build Tools, Bundlers, etc.

Yuku — A high-performance JavaScript and TypeScript compiler toolchain written in Zig that's spec-compliant, has zero dependencies, and is fast by design.

pu.sh — A zero-package-dependency coding agent under 50KB that's just one shell file and includes common Unix tools, curl, awk, and an API key.

Fetch Any API Without CORS Errors — Call any API from your frontend with no cross-origin errors. Fetch JSON, HTML, or images, while keeping your API keys hidden. Join thousands of developers who've fixed CORS errors, including teams at Taco Bell and Runway.    SPONSORED 

unbarrelify — An ESM-only barrel file removal tool for JavaScript and TypeScript projects, to help with performance and memory, tree-shaking failures, and circular dependencies.

Addfox — A build tool to scaffold browser extension development, built on Rsbuild, with features like hot reload, multi-browser support, and minimal config to help you ship extensions faster.

Nitro — A next-generation server toolkit that extends your Vite application with a production-ready server that's compatible with any runtime.

npmx — A fast, modern browser for the npm registry that offers a great UX/DX, to provide a fast, modern interface with features like dark mode, keyboard navigation, code browsing, and connections to alternative registries like JSR.

Hono CLI — A CLI for humans and AI who use Hono, the popular web framework that goes beyond create-*, or similar solutions, providing a `hono` command for running sub-commands.

Tsonic — A strict, deterministic subset of TypeScript into C#, that builds native binaries or .NET outputs from a generated project.

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React Native & Mobile Tools

React Native Vibe Code — An open-source SDK/IDE that creates mobile apps with AI, so you can build React Native and Expo apps through natural language.

@native-html/render — An iOS/Android pure JavaScript React Native component that renders your HTML into 100% native views.

Argent — An agentic toolkit that gives your AI assistant direct access to iOS Simulators and Android Emulators, with functions available all from within your CLI, without switching context.

CORS Proxy for Solving CORS Errors — Call any API from your frontend with no cross-origin errors. Fetch JSON, HTML, or images, while keeping your API keys hidden. Join thousands of developers who've fixed CORS errors, including teams at Taco Bell and Runway.     SPONSORED 

React Native View Recorder — A React Native component to capture any React Native View to a video or an image, with option to add your own audio, ideal for creating shareable content in your apps.

Rock — A modular toolkit for teams building React Native apps, to improve build times and developer experience while fitting into your existing workflows and infrastructure.

React Native Grab — A touch-to-grab context tool for React Native UI changes, enabling you to point at the exact native UI element, capture precise source context, and hand it to your coding agent without guesswork.

react-native-keyboard-controller — A universal keyboard handling solution for React Native that's lightweight, fully customizable, has smooth animations, and consistent behavior on both iOS and Android.

Commercial Apps & Classifieds