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⚛️ How to use TypeScript type predicates in React to create a more robust, type-safe, and maintainable component. (this pattern is particularly useful when dealing with discriminated unions or when you need to narrow types based on runtime checks)

29,508 görüntüleme • 1 yıl önce •via X (Twitter)

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George Moller profil fotoğrafı
George Moller1 yıl önce

I've been working professionally with React for more than 8 years and I compiled all my knowledge into 100+ infographics and 70+ video tutorials just like this one. Check them out ↓

Andre de Waard profil fotoğrafı
Andre de Waard1 yıl önce

We don’t need this since TS 5.5 right?

Prasenjit profil fotoğrafı
Prasenjit1 yıl önce

Thank you for the check, it's going to be useful.

Pavel Romanov profil fotoğrafı
Pavel Romanov1 yıl önce

Strange, I've just tested it in TS playground and stackblitz React playground and it narrows the type correctly (with the latest TS version). Maybe it is a problem of some older TS version or less strict TS complier config?

Davide Briano profil fotoğrafı
Davide Briano1 yıl önce

This is automatically narrowed with the latest TS version now 👌🏻

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