ライブラリ作者におすすめしたいBabelの新機能 babel-plugin-polyfill-corejs3 | Wantedly Engineer Blog
Babelの新しいpolyfill用プラグインであるbabel-polyfillsが2022年4月に脱experimentalを果たしていました。そこで本稿では、Babelにおいてpolyfillがどのように扱われていたかを振り返りながら新しいpolyfill pluginを紹介します。 注意: Babel 7.4で非推奨化された@babel/polyfillとは別物です。 何が問題だったのか?babel-polyfillsのREADMEと元issueにも説明がありますが、本記事ではあらためて日本語で説明したいと思います。端的に言うと今までは以下の要件を両立できませんでした。 ソースコード中で使われている機能のpolyfillだけを注入する。ターゲットブラウザを指定して、必要なpolyfillだけを注入する。副作用のない形でpolyfillを注入する。babel-polyfillsはこれら
Polyfill のあり方と Web の進化と協調するためのガイドライン | blog.jxck.io
Intro W3C の TAG から、主にブラウザ API の Polyfill に関するドキュメントが公開された。 Polyfills and the evolution of the Web Polyfill は便利な一方で、時として標準化の妨げになってしまう場合があるため、それを避けるために、 Polyfill 実装者、利用者、仕様策定者などが、どう振る舞うべきかという趣旨である。 今回はこの内容を元に、 Web の進化と協調する Polyfill のあり方について、主に「実装者」がどうすべきかに着目し記す。 Web における Breaking Change Breaking Change は、簡単に言えば 後方互換を失うことで既存のものが壊れる可能性がある変更 のことを表す。 そして、 Web における Breaking Change (Break the Web)、具体的には W
Polyfill.io
What is Polyfill.io? It's a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser. Why do I need it? There are lots of differing browsers and browser versions in use throughout the world, each one has a slightly different set of features to the rest. This can make developing for browsers a difficult task. The latest v
Rem-unit-polyfill by chuckcarpenter
A polyfill to parse CSS links and rewrite pixel equivalents into head for non supporting browsers View project onGitHub REM unit polyfill No fluff here. The polyfill will test any browser for REM support and patch it up if needed, although we all know IE8 and below is where the issue lies. Once lack of support is determined, it reads all the link tags for stylesheets and finds selectors that have
SVGMagic - Great jQuery SVG fallback plugin
SVGMagic: the fully automated SVG fallback SVGMagic is a simple jQuery plugin that searches for SVG images (including background- and inline dataimages) on your website and creates PNG versions if the browser doesn't support SVG. Wondering why you should use SVG images? SVG images are vector based! Meaning that they will be as sharp as hell no matter how big they are. In other words: one file for
X-Tag - Web Components Library
Getting Started The most important method in the X-Tag library is xtag.create(). The create function on the X-Tag object is what you'll use to create new custom element definitions, which can include things like lifecycle callbacks, attribute-linked getters/setters (accessors), and event listeners. Here's what defining a simple custom element looks like with X-Tag: const Frank = xtag.create('x-fra
Polymer library - Polymer Project
The Polymer library is in maintenance mode. For new development, we recommend Lit. The Polymer library provides a set of features for creating custom elements. These features are designed to make it easier and faster to make custom elements that work like standard DOM elements. Similar to standard DOM elements, Polymer elements can be: Instantiated using a constructor or document.createElement. Co
AmplifyJS - A Component Library for jQuery
AmplifyJS is a set of components designed to solve common web application problems with a simplistic API. Amplify's goal is to simplify all forms of data handling by providing a unified API for various data sources. Amplify's store component handles persistent client-side storage, using standards like localStorage and sessionStorage, but falling back on non-standard implementations for older brows
Webshim
Important note: Webshim is not compatible with upcoming jQuery 3.x and I do not plan to work on a new major version. I will still fix critical bugs in the future though. Webshim is a polyfill library that enables you to reliably use HTML5 features across browsers, even if native support is lacking. The project is hosted on GitHub, and is available for use under the MIT software license. You can re
scottjehl/Respond: A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)
Respond.js A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more) Copyright 2011: Scott Jehl, scottjehl.com Licensed under the MIT license. The goal of this script is to provide a fast and lightweight (3kb minified / 1kb gzipped) script to enable responsive web designs in browsers that don't support CSS3 Media Queries - in particular, Internet Explorer 8 and unde
IE PNG Fix - TwinHelix
IE PNG Fix 2.0 Alpha 4 This script adds near-native PNG support with alpha opacity to IE 5.5 and 6. Now you can have full translucency and no more ugly grey borders! Full CSS background positioning and repeat are supporting (including CSS sprites). It requires only one line in your CSS file, and no changes to your website HTML. <IMG> tags and background images are both supported. Script License Ag
Selectivizr - CSS3 pseudo-class and attribute selectors for IE 6-8
Enhancing IE's selector engine Selectivizr adds support for 19 CSS3 pseudo-classes, 2 pseudo-elements and every attribute selector to older versions of IE. It can also fix a few of the browsers native selector implementations. JavaScript-knowledge: none Selectivizr works automatically so you don't need any JavaScript knowledge to use it — you won't even have to modify your style sheets. Just start
flashcanvas.net - flashcanvas リソースおよび情報
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CSS3 Compatibility Tools, Resources and References for IE
CSS3 is the coolest thing to happen to web design in a long, long time. With all of its incredible new properties, border-radius, box-shadow, border-image, transform to name just a few, a new dawn has arrived, and opened up a multitude of powerful and exciting options that have refreshed the web design community as a whole. Yes, we do love it! Not everybody loves it, well, not as yet, anyway. They
透過PNGや角丸などをIE6や7でも実装出来るJavaScriptのメモ
cssやプログラミングIEのバグはJSで IE6のPNG透過や6、7での 角丸、ドロップシャドウを実装 するjsライブラリのまとめです。 同じ用途でもライブラリによっ て良し悪しだと思いますので、 備忘録的にメモ。 IE6のPNG透過や6、7での 角丸、ドロップシャドウを実装 するjsライブラリのまとめです。 同じ用途でもライブラリによっ て良し悪しだと思いますので、 備忘録的にメモ。 もうIEはいいよとも思いますが、現実そうも行かないのはもどかしいですね。万能では無いですけど、作業工数を減らせるならjsに頼ってもいいと思います。そういう訳で、透過の問題や角丸、ドロップシャドウを実装してくれるjsのメモ。 IE7.js IE6以下でもIE7と同じようなXHTML / CSSの解釈をしてくれます。要DOCTYPE 宣言。 IE6以下をWeb標準に準拠させるライブラリ『IE7.js』 DD_b
ExplorerCanvas
Modern browsers like Firefox, Safari, Chrome and Opera support the HTML5 canvas tag to allow 2D command-based drawing. ExplorerCanvas brings the same functionality to Internet Explorer. To use, web developers only need to include a single script tag in their existing web pages. Overview Sample pages using the canvas tag are included with the source code. For more information about the canvas tag,
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GitHub - jonathantneal/flexibility: A JavaScript polyfill for Flexbox
GitHub - YahooArchive/ypromise: An ES6 Promise polyfill
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ie7-js - A JavaScript library to make MSIE behave like a standards-compliant browser. - Google Project Hosting