...but that's what Svelte is not. The techniques you adopt won't transfer over to vanilla HTML/CSS/JS without the magic Svelte compiler. These habits will become crutch when Svelte inevitably goes the way of every Javascript frontend framework.
> something complex like React
React is not that complex, certainly not more so than Svelte. It's hard to wrap your head around some behaviors, but at the end of the day, it is really just Javascript/Typescript. It is programming. As a programmer, I want to spend most of my time programming in a programming language, not so much of it configuring the Rube-Goldberg machine that is HTML/CSS. Your mileage may vary, of course.
> this silly side project made in Svelte over a weekend
I will admit, that's what Svelte excels at.
Meanwhile, React is basically pure TS and the only bugs I run into are the occasional limitations of TSC.
>Its type checker and build toolchain are so abysmally bad and bug-riddled that I run into new bugs and limitations on the daily.
This seems like a setup issue.
Mine catches everything just fine. Both in-editor (I use neovim) and with a make step (just calls vue-tsc) + a precommit hook as a sanity check.
>React is basically pure TS and the only bugs I run into are the occasional limitations of TSC.
React is obscene. It always seemed to me the Java of the FE world, made worse in recent years. By that I mean grotesquely verbose and full of ceremonious value passing through multiple functions just for the tiniest of things. I've had to work with React codebases and these days I outright refuse to do that/turn down jobs with that requirement. I'd rather use angular.
Svelte and Vue are ergonomic and straightforward and they sanely default to SFCs instead of that woeful chimera of languages called JSX/TSX - you can still use it if you so desire though.