#568 — March 4, 2025 |
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Announcing TypeScript 5.8 — Four months in the making, TypeScript 5.8 lands with a strong Node focus. You can now use Microsoft |
![]() Instrument, Monitor, Fix: A Hands-On Debugging Class — Join us live for a hands-on session where you’ll build it, watch it break, debug it, and go from “no idea what’s wrong” to fixing issues—all in one go. Save your spot here ». Sentry sponsor |
Turbocharging V8 with Mutable Heap Numbers — The V8 team uses the JetStream2 benchmark suite to investigate performance issues and has implemented a new optimization yielding not just a 2.5x improvement in the Victor Gomes (V8) |
IN BRIEF:
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Web Scraping with Playwright — I’d be surprised if you got away with scraping YouTube like this for long (let’s say Google aren’t big fans of the approach) but the techniques demonstrated are useful more generally too. Marcin Wanago |
Harnessing Data at Scale: Character.AI's Transition to WarpStream — Character.AI used WarpStream to make a 3 GiB/s Apache Kafka-compatible data pipeline and reduced their analytics costs. WarpStream sponsor |
📄 Creating a CLI Chatbot with LangChain and OpenAI Robin Wieruch 📄 Node.js Writable Streams: A Practical Guide Pavel Romanov 📄 Simple TypeScript Playgrounds with |
🛠 Code & Tools |
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Electron App Boilerplate with Modern Dependencies — A basic template app that uses React 19, Tailwind CSS 4, shadcn/ui, Electron Vite, Biome, and includes a GitHub Actions release workflow. Dalton Menezes |
fast-png 6.3: Pure JS PNG Image Decoder and Encoder — Pass it a PNG to decode via a TypedArray or Buffer, or a Canvas ImageData (or compatible object) to encode into PNG. Michaël Zasso |
Jira.js 4.1: A Wrapper for Atlassian Jira's Cloud APIs — Are you lucky enough to use Jira? Increase your joy even more by interacting with it from code. Further docs and examples. Vladislav Tupikin |
InversifyJS 7.0: Inversion of Control Container — A lightweight inversion of control (IoC) container to help you adhere to OO best practices. Remo H. Jansen |
Malibu: Framework-Agnostic CSRF Middleware — ESM only, zero-dependency, and TypeScript types are included. It’s compatible with Express, Tinyhttp, and most modern frameworks based around the core HTTP package. Reinaldy Rafli |
wacat 1.4: Tests Your Webapp Against 'Cat Chaos' — Uses a virtual ‘cat walking across your keyboard’ approach to tormenting apps with random clicks and form submissions, now with a stronger focus on using AI to generate both valid and invalid inputs. Mika Tapanainen |
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📢 Elsewhere in JavaScript |
A quick roundup of some of other interesting stories in the broader JavaScript landscape, in case you've missed them:
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