How Googlebot sees your JavaScript

How Google Handles JavaScript In Its Indexing Process — Once, if you wanted Google to index your content, it needed to be right in the HTML and not dynamically rendered with JavaScript. Things have changed, but how much? MERJ and Vercel analyzed over 100,000 Googlebot fetches in an attempt to empirically demystify Google’s approach.

Zecchini, Moore, Siddle, Ubl (Vercel)

Garbage Collection and Closures — When three JavaScript experts get together and all learn something new about how JavaScript works when they encounter a memory leak, it pays to listen. An interesting quirk to be aware of.

Jake Archibald

Tracing: Frontend Issues with Backend Solutions — As Developers, we often hear complaints like, “This page is taking too long to load. It’s a front-end issue. Fix it.” But what if the problem isn’t on the front end? How do you trace issues through your stack? Watch the step by step guide.

Sentry sponsor

Announcing TypeScript 5.6 Beta — The first beta of the next major version of TypeScript is out. Region-prioritized diagnostics (VS Code only, for now) is a particularly interesting addition.

Daniel Rosenwasser (Microsoft)

Benchmarking AWS Lambda Cold Starts Across JS Runtimes — It’s from the Deno team so it may not be surprising that Deno was fastest, but they share their methodology and results for Deno, Node, Bun and AWS’s managed Node runtime and they weren't all that far apart.

Zinkovsky and Jiang (Deno)

Node.js's Experimental Support for TypeScript — In this pull request, Node merged an experimental ability to transpile TypeScript into JavaScript, ultimately letting Node directly ‘run TypeScript’. No type checking is performed and, as Matt Pocock explains, TypeScript-only features are a no-go.

Sarah Gooding (Socket)

Ever Felt Compelled to Answer with Certainty When You Weren’t Sure? — Don’t stifle innovation with this toxic behavior. Thoughts on how to fix this—as a leader or individual contributor.

Test Double sponsor

A Different Way to Think About TypeScript — “a very expressive way to operate over sets, and using those sets to enforce strict compile time checks”

Robby Pruzan

emoji-picker-element: A Lightweight Emoji Picker — An emoji picking control, packaged as a Web Component. You can also add custom emoji to it. GitHub repo.

Nolan Lawson

STRICH: Fast and Reliable 1D/2D JS Barcode Scanning in Your Browser — You don’t need a native app to scan barcodes! Try the free demo app or sign up for the free, full-featured 30-day trial.

STRICH sponsor

☎︎ International Telephone Input — A very mature option that offers all the trimmings you’d expect: accessibility, type definitions, flags, automatic country selection, automatic formatting, and more. GitHub repo.

Jack O'Connor

PythonMonkey: Embed a JavaScript Engine into the Python VM — If you need to use Python but want to run JS, this gives you a way to do it with Mozilla’s SpiderMonkey engine. It now supports the CommonJS module system too.

Distributive Corp.

📅 Calendar Link: Dynamically Generate Event Links for Calendars — Generate event links for Google Calendar, Yahoo Calendar, Outlook, etc.

Anand Chowdhary

The Only Production-Ready AI-Powered Backend Code Generator — Build new services, extend your existing applications with Amplication AI. Go from idea to production in four minutes.

Amplication sponsor

JS-PyTorch: A PyTorch-Like Library for JavaScript — Recently renamed from JS-Torch, this brings some of the magic from Python’s popular PyTorch library to JavaScript for training and testing neural networks in particular. We linked to it earlier this year, but it has added GPU support thanks to GPU.js.

Eduardo Leao

json-to-csv-export: Generate Downloadable CSV of JSON Data — You’ve got some data in JSON, you want users to be able to download a CSV of that data.. GitHub repo.

Coston Perkins