The JavaScript Specification has a New License – Mozilla Hacks - the Web developer blog

2022/06/27 12 users the Web developer blog

In March of this year, Ecma International accepted a proposal led by Mozilla for a new alternative license. On June 22nd, the first requests to adopt this license were granted to TC39 and applied to the following documents: ECMA-262 (ECMAScript, the official name for JavaScript) and ECMA-402 (the... 続きを読む

無料でウェブページのパフォーマンスを一発可視化できるツール「Firefox Profiler」レビュー

2022/04/11 93 users ウェブページ Firefox ウェブサイト パフォーマンス

Firefoxにはウェブ開発者向けの開発ツールが搭載されています。この開発ツールにウェブサイトのパフォーマンスを可視化できる分析ツール「Firefox Profiler」が追加されていたので、実際に使ってみました。 Performance Tool in Firefox DevTools Reloaded - Mozilla Hacks - the Web developer blog https://hacks.mozi... 続きを読む

How MDN's autocomplete search works - Mozilla Hacks - the Web developer blog

2021/08/03 10 users the Web developer blog

Last month, Gregor Weber and I added an autocomplete search to MDN Web Docs, that allows you to quickly jump straight to the document you’re looking for by typing parts of the document title. This is the story about how that’s implemented. If you stick around to the end, I’ll share an “easter egg... 続きを読む

HTTP/3が5月末までにFirefoxでデフォルトで有効になる予定、Mozillaが明らかに。QUICの実装はRustによる独自実装の「Neqo」（たぶん「ネコ」） － Publickey

2021/04/26 25 users Publickey rust quic http デフォルト

Mozillaのブログ「Mozilla Hacks」に4月16日付けで投稿された記事「QUIC and HTTP/3 Support now in Firefox Nightly and Beta」によると、5月末までにFirefoxでHTTP/3が利用可能になることが明らかにされました。 FirefoxでのHTTP/3対応について、次のように説明されています。 Support for QUIC and HTTP/3 is now ena... 続きを読む

Warp: Improved JS performance in Firefox 83 - Mozilla Hacks - the Web developer blog

2020/11/14 10 users Warp Just-in-time Firefox Web

Introduction We have enabled Warp, a significant update to SpiderMonkey, by default in Firefox 83. SpiderMonkey is the JavaScript engine used in the Firefox web browser. With Warp (also called WarpBuilder) we’re making big changes to our JIT (just-in-time) compilers, resulting in improved respons... 続きを読む

Announcing the Bytecode Alliance: Building a secure by default, composable future for WebAssembly - Mozilla Hacks - the Web developer blog

2019/11/12 26 users the Web developer blog

Today we announce the formation of the Bytecode Alliance, a new industry partnership coming together to forge WebAssembly’s outside-the-browser future by collaborating on implementing standards and proposing new ones. Our founding members are Mozilla, Fastly, Intel, and Red Hat, and we’re looking... 続きを読む

Firefox's New WebSocket Inspector - Mozilla Hacks - the Web developer blog

2019/10/15 16 users the Web developer blog

The Firefox DevTools team and our contributors were hard at work over the summer, getting Firefox 70 jam-packed with improvements. We are especially excited about our new WebSocket inspection feature, because you told us in feedback how important it would be for your daily work. To use the inspec... 続きを読む

Moving Firefox to a faster 4-week release cycle - Mozilla Hacks - the Web developer blog

2019/09/17 15 users the Web developer blog

Overview We typically ship a major Firefox browser (Desktop and Android) release every 6 to 8 weeks. Building and releasing a browser is complicated and involves many players. To optimize the process, and make it more reliable for all users, over the years we’ve developed a phased release strateg... 続きを読む

WebAssembly Interface Types: Interoperate with All the Things! - Mozilla Hacks - the Web developer blog

2019/08/21 23 users the Web developer blog

People are excited about running WebAssembly outside the browser. That excitement isn’t just about WebAssembly running in its own standalone runtime. People are also excited about running WebAssembly from languages like Python, Ruby, and Rust. Why would you want to do that? A few reasons: Make “n... 続きを読む

Firefox brings you smooth video playback with the world's fastest AV1 decoder - Mozilla Hacks - the Web developer blog

2019/05/24 19 users decoder

Tuesday’s release of Firefox 67 brought a number of performance enhancing features that make this our fastest browser ever.  Among these is the high performance, royalty free AV1 video decoder dav1d, now enabled by default on all desktop platforms (Windows, OSX and Linux) for both 32-bit and 64-b... 続きを読む

Firefox 67: Dark Mode CSS, WebRender, and more - Mozilla Hacks - the Web developer blog

2019/05/22 14 users WebRender and more Firefox 67

Firefox 67 is available today, bringing a faster and better JavaScript debugger, support for CSS prefers-color-scheme media queries, and the initial debut of WebRender in stable Firefox. These are just the highlights. For complete information, see: Firefox 67 Release Notes Firefox 67 for Develope... 続きを読む

Faster smarter JavaScript debugging in Firefox DevTools - Mozilla Hacks - the Web developer blog

2019/05/16 19 users the Web developer blog

Script debugging is one of the most powerful and complex productivity features in the web developer toolbox. Done right, it empowers developers to fix bugs quickly and efficiently. So the question for us, the Firefox DevTools team, has been, are the Firefox DevTools doing it right? We’ve been lis... 続きを読む

Technical Details on the Recent Firefox Add-on Outage - Mozilla Hacks - the Web developer blog

2019/05/09 11 users the Web developer blog

Recently, Firefox had an incident in which most add-ons stopped working. This was due to an error on our end: we let one of the certificates used to sign add-ons expire which had the effect of disabling the vast majority of add-ons. Now that we’ve fixed the problem for most users and most people’... 続きを読む

PythonインタプリタをWebAssemblyへコンパイル、Webブラウザで稼働するPython環境「Pyodide」。Mozillaが開発中 － Publickey

2019/04/18 165 users Publickey WebAssembly Pyodide

Mozillaは、WebブラウザでPythonインタプリタや数値計算ライブラリのNumPyなど、Pythonの標準的なデータサイエンス環境をほぼそのまま実行可能にする「Pyodide」（パイオダイドと発音されているようです）を開発中です。 Mozilla Hacksのブログに投稿された記事「Pyodide: Bringing the scientific Python stack to the ... 続きを読む

Pyodide: Bringing the scientific Python stack to the browser - Mozilla Hacks - the Web developer blog

2019/04/17 23 users Pyodide bringing the

Pyodide is an experimental project from Mozilla to create a full Python data science stack that runs entirely in the browser. The impetus for Pyodide came from working on another Mozilla project, Iodide, which we presented in an earlier post.  Iodide is a tool for data science experimentation and... 続きを読む

Standardizing WASI: A system interface to run WebAssembly outside the web – Mozilla Hacks – the Web developer blog

2019/03/27 54 users the Web developer blog

Today, we announce the start of a new standardization effort — WASI, the WebAssembly system interface. Why: Developers are starting to push WebAssembly beyond the browser, because it provides a fast, scalable, secure way to run the same code across all machines. But we don’t yet have a solid foun... 続きを読む

Fast, Bump-Allocated Virtual DOMs with Rust and Wasm – Mozilla Hacks – the Web developer blog

2019/03/14 27 users Fast the Web developer blog

Dodrio is a virtual DOM library written in Rust and WebAssembly. It takes advantage of both Wasm’s linear memory and Rust’s low-level control by designing virtual DOM rendering around bump allocation. Preliminary benchmark results suggest it has best-in-class performance. Background Dodrio from a... 続きを読む

Firefox 65: WebP support, Flexbox Inspector, new tooling & platform updates - Mozilla Hacks - the Web developer blog

2019/01/29 25 users new tooling Firefox 65

Well now, there’s no better way to usher out the first month of the year than with a great new Firefox release. It’s winter for many of us, but that means more at-home time to install Firefox version 65, and check out some of the great new browser and web platform features we’ve included within. ... 続きを読む

WebAssembly's post-MVP future: A cartoon skill tree - Mozilla Hacks - the Web developer blog

2018/10/22 53 users the Web developer blog

People have a misconception about WebAssembly. They think that the WebAssembly that landed in browsers back in 2017—which we called the minimum viable product (or MVP) of WebAssembly—is the final version of WebAssembly. I can understand where that misconception comes from. The WebAssembly communi... 続きを読む

A cartoon intro to DNS over HTTPS – Mozilla Hacks – the Web developer blog

2018/05/31 54 users the Web developer blog

Threats to users’ privacy and security are growing. At Mozilla, we closely track these threats. We believe we have a duty to do everything we can to protect Firefox users and their data. We’re taking ... 続きを読む

Hello wasm-pack! – Mozilla Hacks – the Web developer blog

2018/04/18 60 users pack the Web developer blog

As Lin Clark emphasizes in her article about Rust and WebAssembly : the goal of WebAssembly is not to replace JavaScript, but to be an awesome tool to use with JavaScript . Lots of amazing work has be... 続きを読む

ES modules: A cartoon deep-dive – Mozilla Hacks – the Web developer blog

2018/03/28 35 users ES Modules

ES modules bring an official, standardized module system to JavaScript. It took a while to get here, though — nearly 10 years of standardization work. But the wait is almost over. With the release of ... 続きを読む

Making WebAssembly better for Rust & for all languages – Mozilla Hacks – the Web developer blog

2018/03/14 39 users the Web developer blog

One big 2018 goal for the Rust community is to become a web language. By targeting WebAssembly, Rust can run on the web just like JavaScript. But what does this mean? Does it mean that Rust is trying ... 続きを読む

Firefoxにおいて「WebExtensionsが利用可能に」と開発者向けアナウンス、クロスブラウザ対応に向けた拡張機能 － Publickey

2017/06/12 42 users Publickey WebExtensions 拡張機能

MozillaのデベロッパーアドボケイトPotch氏は、Firefoxにおいて WebExtensions 対応の拡張機能が利用可能になったことをMozilla Hacksに投稿した記事「 Cross-browser extensions, available now in Firefox 」で明らかにしました。 We’re modernizing the way developers build... 続きを読む

Ruby support in Firefox Developer Edition 38 ✩ Mozilla Hacks – the Web developer blog

2015/03/05 139 users the Web developer blog

It was a long-time request from East Asian users, especially Japanese users, to have ruby support in the browser. Formerly, because of the lack of native ruby support in Firefox, users had to install ... 続きを読む