Requesting changes for the browser support on Joomla 4

[dgrammatiko]

Right now Joomla 4 has a policy of n-2 for it's browser support: https://volunteers.joomla.org/departments/production/reports/1031-production-dept-meeting-may-28-2019

This is bad, extremely bad. For example, Chrome (and thus, Edge, Opera, Samsung, Brave, the list goes on) has a release every 6 weeks. So, in my mind, I could think that Joomla 4 will only support browsers up to 12 weeks old (ok not every release is a major but you get where I'm going) (actually every release on their schedule IS a major one).

Also, the notion of Major version is fading away for web development:

• HTML, rolling updates: https://html.spec.whatwg.org/multipage/ (the stage signifies if it's alpha, beta, stable)
• CSS, rolling updates: https://drafts.csswg.org (the stage signifies if it's alpha, beta, stable)
• JS, rolling updates: https://tc39.es/process-document/ (the stage signifies if it's alpha, beta, stable)

So what's the alternative?

Adhere to a rule of we ship features that have over >90% browser support. (the 90% needs to be defined, 95 or 97 seem good values)
For example, If I do a PR that I use focus-visible in the CSS the PR should be automatically closed (support is under 90% https://caniuse.com/css-focus-visible) unless there is a polyfill (and the usage is acceptable)

[ceford]

I was wondering how to find out the % browser support. I have used caniuse from time to time. It says h2 and p are used by 63% of browsers but that does not seem to tally with the list of green boxes. So are the numbers reliable? Is focus-visible low because of the Internet Explorer installed base which Bootstrap 5 is not supporting.

[dgrammatiko]

It says h2 and p are used by 63% of browsers but that does not seem to tally with the list of green boxes

I think that the use of that service is about the newer features of the web that are still not supported everywhere, eg:
HTML elements:
https://caniuse.com/date
https://caniuse.com/dialog
https://caniuse.com/details

JS:
https://caniuse.com/bigint
https://caniuse.com/mdn-javascript_operators_logical_nullish_assignment
https://caniuse.com/promises

CSS:
https://caniuse.com/css-logical-props
https://caniuse.com/css-color-function
https://caniuse.com/mdn-css_properties_color-adjust

In sort, it's weird to use this service for the backbone elements (h, a, link, meta, etc) as most of the times you want to know how widely supported is a NEW feature