The Three Types of Performance Testing – CSS Wizardry

I wasted a day on CSS selector performance to make a website load 2ms faster | Trys Mudford

Picture me holding Trys back and telling him, “Leave it alone, mate, it’s not worth it!”

The State of ES5 on the Web

This is grim:

If you look at the data below on how popular websites today are actually transpiling and deploying their code to production, it turns out that most sites on the internet ship code that is transpiled to ES5, yet still doesn’t work in IE 11—meaning the transpiler and polyfill bloat is being downloaded by 100% of their users, but benefiting none of them.

Pivoting From React to Native DOM APIs: A Real World Example - The New Stack

One dev team made the shift from React’s “overwhelming VDOM” to modern DOM APIs. They immediately saw speed and interaction improvements.

Yay! But:

…finding developers who know vanilla JavaScript and not just the frameworks was an “unexpected difficulty.”

Boo!

Also, if you have a similar story to tell about going cold turkey on React, you should share it with Richard:

If you or your company has also transitioned away from React and into a more web-native, HTML-first approach, please tag me on Mastodon or Threads. We’d love to share further case studies of these modern, dare I say post-React, approaches.

Standing still - a performance tinker | Trys Mudford

What Trys describes here mirrors my experience too—it really is worth occasionally taking a little time to catch the low-hanging fruit of your site’s web performance (and accessibility):

I’ve shaved nearly half a megabyte off the page size and improved the accessibility along the way. Not bad for an evening of tinkering.

JavaScript Bloat in 2024 @ tonsky.me

This really is a disgusting exlusionary state of affairs.

I hate to be judgy, but I honestly wonder how the people behind some of these decisions can call themselves web developers.