This is just a demo, of course, but it is close enough to be representative. From just this simple demo we can already see significant differences: Svelte and Solid.js are much snappier. The author of the article, Rich, created Svelte.
Of course, this is just talking about performance, not yet getting accessibility, navigation, transitions, etc right.
Anyway, for fast SPAs, here is a useful comparison: the "RealWorld app" demo.
I would urge everyone to look at the Lighthouse audits for these three implementations:
React/Redux: https://react-redux.realworld.io/
Angular: https://angular.realworld.io/
Vue: https://vue-vuex-realworld.netlify.app/#/
Svelte/Sapper: https://realworld.svelte.dev/
Solid.js: https://ryansolid.github.io/solid-realworld/
This is just a demo, of course, but it is close enough to be representative. From just this simple demo we can already see significant differences: Svelte and Solid.js are much snappier. The author of the article, Rich, created Svelte.
Of course, this is just talking about performance, not yet getting accessibility, navigation, transitions, etc right.