Testing React 19 BETA (use, useActionState, useOptimistic, useFormStatus, context)

use, useActionState, useOptimistic, useFormStatus, context. On April 25, the React team made a lot of noise. The 18.3, the 19th beta versions of React were published, and the most valuable thing - an article with what was included in the beta of the 19th version. And of course I tested everything to the limits!

React 19 beta - https://react.dev/blog/2024/04/25/rea...
formData MDN - https://developer.mozilla.org/en-US/d...

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Timecodes:
00:00 - Topic announcement
00:25 - React 18.3
01:04 - React compiler
01:26 - Actions
02:48 - useActionState
05:28 - useOptimistic
07:04 - Just use
08:26 - Cached Promise
10:27 - Сильные стороны use
11:36 - use + if
12:05 - Context
12:43 - Ref

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#react #webdevelopment #programming #frontend #reactjs #react19