#585 — July 8, 2025 |
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jsonrepair: Repair Invalid JSON Documents — This has lots of possible use cases, including dealing with weird JSON coming back from LLMs or non-compliant JSON spat out by poorly built software. You can use it from Node, as a CLI tool, or try a basic version online. Jos de Jong |
![]() Speed Up Your Stack with Redis & Valkey Hosting — Memetria K/V offers managed Redis OSS and Valkey tuned for Node.js apps. Track large keys and gain analytics-driven insights to cut latency and improve efficiency. Memetria sponsor |
Codepoint–Safe Truncation: Fixing Emoji Slicing in Node — An app’s CSV importer kept breaking on emoji-filled rows, triggering errors. James demonstrates how swapping slice for a code-point–aware spread fixes it. James Mulholland |
IN BRIEF:
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How to Build Your Own Color Search Engine — A straightforward, practical look at bringing together several technologies and skills to create an AI powered color suggestion tool (which you can try here). The techniques covered can be used for many different practical ends. Lúí Smyth |
📺 How to Build Your First MCP Server – Build your first Model Context Protocol (MCP) server that connects AI assistants like GitHub Copilot to live weather data. Debbie O'Brien 📄 What’s the Difference Between Ordinary Functions and Arrow Functions? James Sinclair 📄 Am I Online? – An interesting way to see if your app is truly online by checking a special Google URL. Anton Zhiyanov |
🛠 Code & Tools |
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Bruno: An IDE for Exploring and Testing HTTP APIs — An open source (though a commercial version is available) Node and Electron-based desktop app for crafting and testing HTTP requests, complex and simple. Think of it as a lightweight alternative to something like Postman. Anoop M D, Anusree P S and Contributors |
Poolifier 5.0: A Worker Threads and Cluster Worker Pool — Implements worker pools using Alessandro Pio Ardizio |
AppSignal Shows What Slows Your Node.js Apps — AppSignal helps Node.js devs fix bugs and performance issues fast. Easy to set up, a joy to use. Start your free trial today. AppSignal sponsor |
grammY: An Up-to-Date Telegram Bot Framework — Claims to “make creating Telegram bots so simple you already know how to do it” and supports the latest Telegram Bot API. GitHub repo. KnorpelSenf |
🔥 0x 6.0: Single-Command Flamegraph Profiling for Node — A tool that can profile and generate an interactive flamegraph for a Node process in a single command. David Mark Clements |
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📢 Elsewhere in JavaScript |
A roundup of some other interesting stories in the broader JavaScript landscape, in case you've missed them:
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