Typescript Type vs Interface - What to use?

Learn the difference between Typescript type vs interface. This two keywords are working in a similar manner so you need to understand when you need to use each of them.

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[alexdeweert]

So Types can do everything Interfaces do, and a bit more? (e.g. allowing overriding properties from types they extend?)

[jonathanjohnson]

Thanks so much. Struggling to understand some things in Typescript but you helped explain the difference between types and interfaces. Love your videos ❤

[burningtree]

Types ftw! Worked with both, more and more I find Types more flexible and especially due to ts’s type utilities. I mean the language is called “Type” script 😃
Thanks for making the video!

[theasdazx]

Bro I've been following for couple years. you're great but isn't time you switched to react/svelte/solid ? :((( New challenges

[dev-patel]

Is he just me or he sounds like Gabe Follower a famous data miner in CS2 🧐

[robertsandiford]

I think the main difference is that interfaces can be declared multiple times, and the contents will be merged. Even consuming projects can extend interfaces with declare 'package' { interface ... }. So use types if you don't need this as it can lead to double declaration mistakes if you don't need to be able to extend a type later.

[sircharlesross]

Whoa I didn’t know you could implement regular types, thought that was interface only

[Skeb]

I recently learned that type unions have performance loss when compared with interface polymorphism.