Good point. There are JavaScript tools that do that for js devs, but since oftentimes you end up having <a>links</a> and <b>nested <i>elements</i></b> in the code, wrapping becomes problematic and hard to maintain at scale.
I think there's a chance compile-time, AST/CST solutions might be the ultimate, O(1) i18n approach that doesn't distract. Ideally it should come out of the box with the framework, but perhaps this future is a little bit too far away just yet.
For HTML, it probably needs to be extended to the HTML fragments themselves. And with React, it's pretty easy to actually extract the text fragments in {} segments.
I think there's a chance compile-time, AST/CST solutions might be the ultimate, O(1) i18n approach that doesn't distract. Ideally it should come out of the box with the framework, but perhaps this future is a little bit too far away just yet.