---
title: "The details of TC39's last meeting"
publication: "JavaScript Weekly"
issue: 744
published_at: "2025-07-11"
canonical_url: "https://javascriptweekly.com/issues/744"
---

Plus Nginx adds QuickJS, Vercel adopts Nuxt, and comparing different kinds of JavaScript functions. |        

#​744 — July 11, 2025 

[Read on the Web](https://javascriptweekly.com/issues/744)  

Together with [![Mescius\](https://res.cloudinary.com/cpress/image/upload/c_fill,g_auto,w_1280,h_284/e_make_transparent/co_white,e_outline:7/mqrpcwpbl3os6si25hoe.jpg)](https://developer.mescius.com/wijmo/flexgrid-javascript-data-grid?utm_source=CooperPress&utm_medium=JavaScript-Weekly&utm_campaign=Wijmo-JS-Weekly-Primary-Sponsor-July-2025)   

JavaScript Weekly 

[![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60,q_auto/o6uwg7u2bkriyk5bxzci.jpg)](https://nuxtlabs.com/)  

[Vercel Acquires NuxtLabs](https://nuxtlabs.com/) — Vercel has acquired the company that caretakes the [Nuxt](https://nuxt.com/) project and employs some of its core team – a move Vue creator Evan You is [quite optimistic about.](https://x.com/youyuxi/status/1942601776919978285) Vercel now manages, or at least supports, several key projects like Next.js, Turborepo, Svelte, and shadcn/ui. Nuxt itself remains open source and has [a promising future.](https://github.com/nuxt/nuxt/discussions/32559) Vercel’s Guillermo Rauch [shares a little more about the move here.](https://vercel.com/blog/nuxtlabs-joins-vercel) 

NuxtLabs / Vercel   

💡 Daniel Roe, leader of the Nuxt team, [answered lots of questions about the acquisition](https://www.reddit.com/r/vuejs/comments/1lvdkwr/i_lead_the_nuxt_core_team_ama/) on Reddit.  [![\](https://res.cloudinary.com/cpress/image/upload/c_limit,w_480,h_480,q_auto/copm/ae48fa0b.png)](https://developer.mescius.com/wijmo/flexgrid-javascript-data-grid?utm_source=CooperPress&utm_medium=JavaScript-Weekly&utm_campaign=Wijmo-JS-Weekly-Primary-Sponsor-July-2025) 

[FlexGrid by Wijmo: The Industry-Leading JavaScript Datagrid](https://developer.mescius.com/wijmo/flexgrid-javascript-data-grid?utm_source=CooperPress&utm_medium=JavaScript-Weekly&utm_campaign=Wijmo-JS-Weekly-Primary-Sponsor-July-2025) — A fast and flexible DataGrid for building modern web apps. Key features and virtualized rendering are included in the core grid module. Pick & choose special features to keep your app small. Built for JavaScript, extended to Angular, React, and Vue. 

Wijmo From MESCIUS sponsor   

[A Detailed Summary of the Latest TC39 Plenary](https://blogs.igalia.com/compilers/2025/07/03/summary-of-the-may-2025-tc39-plenary/) — A thorough roundup of May’s major ECMAScript committee meeting with far more detail about each proposal’s development and the decisions made than we usually get to hear about. Topics include `Array.fromAsync`, explicit resource management, the Temporal API, and some brainstorming around AsyncContext. 

Igalia Compilers Team   

**IN BRIEF:** 

- [TypeScript 5.9 Beta](https://devblogs.microsoft.com/typescript/announcing-typescript-5-9-beta/) has been released with support for [deferred module evaluation by using `import defer`.](https://devblogs.microsoft.com/typescript/announcing-typescript-5-9-beta/#support-for-import-defer)
- The [Nginx](https://nginx.org/) HTTP server has a module (`njs`) for extending its functionality using JavaScript, but it only supported ES5. Now, [`njs` uses QuickJS for a more modern, powerful experience](https://blog.nginx.org/blog/quickjs-engine-support-for-njs) with full ES2023 support.
- Got some time to kill? There's one week left to submit an entry to [the JS1024 annual JavaScript golfing competition.](https://js1024.fun/) Create a cool JS or GLSL program in under 1024 bytes.
- Oliver Stenbom reflects on [the prevalence of Rust in modern JavaScript ecosystem tooling.](https://endform.dev/blog/js-is-being-rewritten-in-rust/)   

**RELEASES:** 

- [Node.js v24.4.0 (Current)](https://nodejs.org/en/blog/release/v24.4.0) – Note that [new versions of all maintained Node.js releases](https://nodejs.org/en/blog/vulnerability/july-2025-security-releases) are due next week due to some security vulnerabilities.
- [Oxlint 1.6](https://github.com/oxc-project/oxc/releases/tag/oxlint_v1.6.0) – Rust-powered linter for JS and TS.
- [VS Code v1.102](https://code.visualstudio.com/updates/v1_102), [Ember 6.5](https://blog.emberjs.com/ember-released-6-5/), [Angular 20.1](https://github.com/angular/angular/releases/tag/20.1.0)  

📖 Articles and Videos 

[![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60,q_auto/kylknxsbkuzxkoi6uvsz.jpg)](https://jrsinclair.com/articles/2025/whats-the-difference-between-named-functions-and-arrow-functions/)  

[What’s the Difference Between Ordinary Functions and Arrow Functions?](https://jrsinclair.com/articles/2025/whats-the-difference-between-named-functions-and-arrow-functions/) — This sounds like basic stuff, but James always does a good job of digging in and explaining things in a way that gives you a more nuanced way to think about a concept, even if it’s just _“Which function declaration syntax should I use?”_ 

James Sinclair   

💡 His guide to [how to compose JS functions that take multiple parameters](https://jrsinclair.com/articles/2024/how-to-compose-functions-that-take-multiple-parameters-epic-guide/) is also worth revisiting.  

[Embrace Web RUM Provides User-Focused Observability](https://embrace.io/blog/introducing-embrace-web-rum/?utm_source=newsletter&utm_medium=paid&utm_campaign=javascript-weekly-7-11-2025) — Get session timelines, Core Web Vitals and JS exceptions in context, and user journey analysis with issue correlation. 

Embrace sponsor   

[JavaScript Scope Hoisting is Broken](https://devongovett.me/blog/scope-hoisting.html) — The creator of [Parcel](https://parceljs.org/) argues that [scope hoisting](https://parceljs.org/features/scope-hoisting/) (when bundlers inline modules into a shared scope) conflicts with modern JS patterns like code splitting and dynamic imports, causing subtle bugs and offering little benefit, so he’s considering removing it in Parcel v3. 

Devon Govett   

[Codepoint–Safe Truncation: Fixing Emoji Slicing](https://attio.com/engineering/blog/javascript-string-slice-considered-harmful) — 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   

📄 [Parsing 1 Billion Rows in Bun in Under 10 Seconds](https://www.taekim.dev/writing/parsing-1b-rows-in-bun) Tae Kim 

📄 [Loosely Synchronize Your JS Stores in Multiple Tauri Processes](https://www.gethopp.app/blog/tauri-window-state-sync) – [Tauri](https://v2.tauri.app/) is a bit like a Rust-flavored Electron for building cross-platform native apps. Costa Alexoglou 

📄 [Managing the State of Your Promises](https://spin.atomicobject.com/managing-the-state-of-your-promises/) – On the potential of `Promise.all` and `Promise.allSettled`. Lydia Cho 

📄 [When Can I Use Temporal?](https://computus.org/when-can-i-use-temporal/) – _“If Brendan Eich can invent .. JavaScript in 10 days, why has it taken eight years to replace the Date API?”_ John Dalziel 

📄 [Is It Still Worth Using jQuery in 2025?](https://waspdev.com/articles/2025-07-07/is-it-still-worth-using-jquery-in-2025) Suren Enfiajyan  

🛠 Code & Tools 

[![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60,q_auto/xxzkh2swioe2x73n1k1m.jpg)](https://driverjs.com/)  

[Driver.js: Tours, Highlights, Contextual Help, and More](https://driverjs.com/) — A vanilla JS library for making on-page tours and contextual help systems. It’s been around for several years, but is still maintained, and there are lots of examples to check out – it’s really smooth. 

Kamran Ahmed   

[jsonrepair: Repair Invalid JSON Documents](https://github.com/josdejong/jsonrepair) — 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](https://josdejong.github.io/jsonrepair/). 

Jos de Jong   

🤡 In barely related news, someone has [turned JSON into its own programming language.](https://github.com/W1LDN16H7/JPL) Oh, the horror!  

[Server-Side Support for MCP in Next.js](https://go.clerk.com/1YIzmjq) — Server-side MCP just got easier in Next.js. One route, no extra infra—Scorecard cut 1,000 lines to just 70. 

Clerk sponsor   

[line-numbers: A Web Component to Add Line Numbers Next to Various HTML Elements](https://github.com/zachleat/line-numbers) — Useful for custom apps that show source code or other snippets that require line numbering. See [examples](https://zachleat.github.io/line-numbers/demo.html) here, which demonstrate the flexibility customization options for the line numbering. 

Zach Leatherman   

[cRonstrue 3.0: Convert Cron Expressions into Natural Language](https://github.com/bradymholt/cRonstrue) — Not just English either - it supports about [thirty locales.](https://github.com/bradymholt/cRonstrue#supported-locales) There’s also [an online demo.](https://bradymholt.github.io/cRonstrue/) 

Brady Holt   

- [Next.js Boilerplate 5.0](https://nextjs-boilerplate.com/) – Boilerplate starter app for Next.js with auth, database support, i18n, forms, and more.
- 🔎 [React Scan 0.4](https://github.com/aidenybai/react-scan/releases/tag/v0.4.0) – Scan for performance issues and eliminate slow renders in your app.
- 🎹 [html-midi-player 1.6](https://cifkao.github.io/html-midi-player/) – Play and display MIDI files on the web.
- [CKEditor5 46.0](https://github.com/ckeditor/ckeditor5/releases/tag/v46.0.0) – Popular commercial rich text editor framework.
- 📊 [Recharts 3.1](https://github.com/recharts/recharts/releases/tag/v3.1.0) – D3-powered chart library for React.
- [Vuetify 3.9](https://github.com/vuetifyjs/vuetify/releases/tag/v3.9.0) – Vue component framework.      

📰 Classifieds   

[Meticulous automatically creates and maintains an E2E UI test suite with zero developer effort](https://www.meticulous.ai/?utm_source=javascript_weekly&utm_campaign=july11th2025%20). Relied on by Dropbox, Wiz, Lattice, Bilt Rewards, etc. 

--- 

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👀 Elsewhere...  

Here's a selection of things from the broader ecosystem this week: 

- As of Chrome 137, you can try out [CSS inline conditionals using the new `if()` function.](https://developer.chrome.com/blog/if-article)
- Did you know [you can generate efficient SVGs that feel like GIFs](https://koaning.io/posts/svg-gifs/) and even use them in your GitHub README.md files?
- On Reddit, an ex-Meta engineer posted an interesting comment about [how Meta / Facebook serves up React](https://www.reddit.com/r/reactjs/comments/1ltbw2e/how_does_facebook_serve_react_pages/n1pjs41/) as part of the main Facebook site.
- PlanetScale has shared [a neat interactive article about caching](https://planetscale.com/blog/caching) that visually demonstrates the benefits of caching from several different angles, right down to the CPU level.
- 𝕏 [_Claude Code_ is now a single-file executable](https://x.com/jarredsumner/status/1943492457506697482) thanks to [Bun.](https://bun.sh/)
- [ANSI.tools](https://ansi.tools/) is a handy online tool for analyzing ANSI escape codes/sequences and [a lookup](https://ansi.tools/lookup) of common codes.         

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