Discuss if Modern building for assets(CSS..) is necessary

[clarkdo]

Discussion Points:

• [ ] Do we need to build different assets (modern and legacy) like: css with different browsers postcss preset ?
• [ ] How to serve the assets in SSR and SPA ?
• [ ] bundles separation
• [ ] TBD

[atinux]

What about having modern CSS for the modern build when not having extractCSS?

[TheAlexLichter]

@Atinux Like that idea! Not much overhead to the current situation and somewhat straightforward implementation I think

[clarkdo]

@Atinux CSS is different from js files, it's only related to postcss, so do you agree that we use current modern browser list to config postcss-preset-env?

And also do you think it's necessary that also build legacy css files with default postcss preset in modern mode ?

[atinux]

I am talking about the CSS when injected through the JS bundle (when no extractCSS). So yes, when modern mode, we should also set postcss-preset-env to modern browsers.

With extractCSS, I don't know if we can have 2 different CSS file for SPA & Generated.

[AndrewBogdanovTSS]

@Atinux but what complexity does extractCSS adds to the implementation? I use extractCSS (when it's working) a lot and this feature would really feel half implemented if it will cause such limitations

[atinux]

Well I guess it could support also extractCSS I believe since it's two different build. The main question is: Is it possible to detect the "modern" css files vs "legacy" one?