JavaScript Weekly Issue 750: August 29, 2025

💡 Sam is making a name for himself with his interactive essays – check out the load balancing, memory allocation, hashing, and bloom filter ones too.

Tests Are Dead. Meticulous AI Is Here — Meticulous creates and maintains a continuously evolving E2E UI test suite with zero developer effort. Built on Chromium with a deterministic engine, it’s the only testing tool that eliminates flakes. Relied on by Dropbox, Notion, and Wiz.

Meticulous AI

IN BRIEF:

RELEASES:

📖 Articles and Videos

Speeding Up the JavaScript Ecosystem: Semver — The latest in Marvin’s multi-year series of posts on optimizing heavily used parts of the JavaScript ecosystem: “During the installation process, package managers run a bunch of semver comparisons. The semver library used in npm, yarn and pnpm can be made around 33x faster.”

Marvin Hagemeister

Say Bye with JavaScript Beacon — The Beacon API has been supported in all mainstream browsers for years now and provides a way to send a guaranteed (even if a page is being unloaded) non-blocking request to a web server when no response is needed.

HemathKumar R

📄 Understanding Promise.any(): When One Success is Enough – Given multiple promises, resolve as soon as just one fulfills. Matt Smith

📄 The Struggle of Wrapping a JavaScript Game for Desktop – The author explains why they finally settled on NW.js. JSLegendDev

📄 Speeding Up Firefox Local AI Runtime – How Firefox accelerated inference by replacing the WASM-based ONNX runtime that powers Transformers.js with a native C++ counterpart. Ziadé, Adenot, and Guelton

📄 Unit Formatting with Intl in JavaScript Raymond Camden

📄 Exporting a Cloth Simulation from Blender to an Interactive Three.js Scene Joshua Guo

📺 Coming in Angular 21: HttpClient Built In by Default Igor Sedov

Obs.js: Context-Aware Web Performance for Everyone — Uses the Navigator and Battery APIs to get contextual information about your users’ connection strength and battery status so you can adapt your site/app to the environment or collect the data for analysis.

Harry Roberts

Repomix 1.4 – Pack an entire repository into a single, LLM-friendly file. v1.4 adds the ability to integrate commit history.
MikroORM 6.5 – TypeScript ORM for Node based on Data Mapper, Unit of Work and Identity Map patterns.
📄 jsPDF 3.0.2 – Client-side JavaScript PDF generation for everyone.
Faker 10.0 – Generate fabricated data to your heart’s content.
Tiptap 3.3 – Headless, framework-agnostic rich text editor.
RxDB 16.18 – Offline-first, reactive database for JS apps.
Denops.vim 8.0 – Write Vim/Neovim plugins with Deno.