Did Svelte gain the adoption like React and Vue ? I am not sure how mature the ecosystem is. I am always wary of using things in production that have not gained significant adoption.
Svelte is pretty established and proven. But not as known as React / Vue / Angular
About 90% of stuffs, svelte's ecosystem is the same as the whole js ecosystem.
From what I recall, they nuked the ergonomics/what made Svelte great with the runes api (Svelte 4?) and most people begrudgingly switched over to React, because, why not at that point.
At least anecdotally I see job listings mostly for React, with some for Vue and Angular, with almost no Svelte. I think I did see one company mention Svelte, so at least someone is building on it, but to a much lesser degree than any of the major players.
Short answer: no.
Long answer: https://2024.stateofjs.com/en-US/libraries/#tools_arrows
It shares a space with React and Vue in terms of positive opinions. Opinions are worse since v5 due to the perceived increase in complexity of using the Runes system.
It is the fourth most used JS framework behind React, Vue, and Angular.