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Svelte, you can learn in an afternoon. Have migrated Angular 1.X and Angular 6.* to Svelte in the past.

I would say you can equally learn the core of Vue and React in a day, so that you’re actually building your app before the day has finished.

Quirks.. I mean rules of hooks in one day? You're not being serious.

You won't be an expert, but you can be productive.

You could easily read https://reactjs.org/docs/hooks-overview.html , https://reactjs.org/docs/hooks-reference.html#basic-hooks , and make a quick React UI with Vite in half a day for a junior dev. You're not being serious.