#polyfills — Public Fediverse posts

In Defense of Polyfills, by @leaverou:

https://lea.verou.me/blog/2026/polyfills/?ref=frontenddogma.com

#polyfills #webplatform

#Development #Debates
In defense of polyfills · “A web platform without polyfills would be a stagnant platform.” https://ilo.im/16ehy0

_____
#Polyfills #Specs #W3C #WebStandards #WebPlatform #WebDev #Frontend #HTML #CSS #JavaScript

#Development #Introductions
Declarative partial updates · Chrome’s new proposals for the web platform https://ilo.im/16d23j

_____
#HtmlStreaming #Chrome #Browser #APIs #Polyfills #WebPerf #WebDev #Frontend #HTML #JavaScript

The Three Pillars of JavaScript Bloat, by @43081j.com:

https://43081j.com/2026/03/three-pillars-of-javascript-bloat

#javascript #dependencies #complexity #runtimes #architecture #polyfills

A Polyfill for the HTML “switch” Element, by @tomayac:

https://blog.tomayac.com/2026/01/12/a-polyfill-for-the-html-switch-element/

#html #forms #polyfills

This is mostly a question into the void, because I don't know how that's done in the real world.
When people are talking about #polyfills, in the context of #webdev, one argument that always pops up, is that they increase bundle size.
My thought: isn't it possible to dynamically load #javascript when a missing feature is detected in a browser? Does this incur a latency penalty that makes this unfeasible? Or is this actually a valid option?

Learn to build polyfills for JavaScript array methods flat, map, filter, and reduce, enhancing your skills and interview confidence https://hackernoon.com/polyfill-this-flat-map-filter-and-reduce-the-hard-way #polyfills

Updates to Popover and CSS Anchor Positioning Polyfills, by @jamessw (@OddBird):

https://www.oddbird.net/2025/05/06/polyfill-updates/

#css #polyfills #popovers #anchorpositioning

Polyfilling CSS With CSS Parser Extensions, by @bramus:

https://www.bram.us/2025/05/04/css-parser-extensions-pitch/

#css #polyfills

How to Think About Baseline and Polyfills, by @malchata (@developers):

https://web.dev/articles/baseline-and-polyfills

#howtos #support #browsers #webplatform #polyfills

#Development #Guidelines
Baseline and polyfills · When should you use a polyfill for a web feature? https://ilo.im/162wl8

_____
#Baseline #Polyfills #Browser #Interoperability #WebDev #Frontend #Backend #HTML #CSS #JavaScript

#Development #Guides
Baseline with fallback strategies · How to decide on polyfills and progressive enhancement https://ilo.im/161j7k

_____
#Baseline #BrowserSupport #Polyfills #ProgressiveEnhancement #Browser #WebDev #Frontend #HTML #CSS #JavaScript

Still have to rely on webextension-polyfill, but, hopefully, it's not long until #Chrome will expose Extension APIs under browser.* namespace, just like #Firefox.

https://issues.chromium.org/issues/40556351

Meanwhile, TIL how to build a cross-browser extension: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Build_a_cross_browser_extension

#WebExtension #WebExtensionAPI #polyfill #polyfills

Y'all remember #PolyfillIO?

I realize the lesson there is; don't depend on code from domains you don't control, and in an ideal world that's what you should do

But is there still a need there? Are there #webPlatform features you'd like to use but you don't want to introduce a build process just to bundle the #polyfill from #NPM?

Or is there no point in #polyfills since #browsers don't share caches between origins these days so there's no precaching benefit anymore?

#webDev #javaScript #web

Speeding up the #JavaScript ecosystem - #Polyfills gone rogue

https://marvinh.dev/blog/speeding-up-javascript-ecosystem-part-6/

#Development #Explorations
Speeding up the JavaScript ecosystem: Polyfills gone rogue · You wanted a banana and got a jungle https://ilo.im/1599o9

_____
#WebDev #Polyfills #Npm #Dependencies #Eslint #Frontend #JavaScript

Ça parle a quelqu'un cette erreur sur #Firefox quand il charge #Twitter ?

C'est étrange ça me le faisait pas hier par exemple.

"twitter.com/?failedScript=polyfills"

#polyfills