Learn the key differences between interfaces and type aliases in TypeScript, including their use cases and important features to consider.

Anja Petry

Community Picks is a section on daily.dev where our community members share the most interesting and valuable content they've discovered online. From insightful articles to handy tools, every post is a gem curated by our dedicated coomunity. To contribute to Community Picks, you need to have at least 250 reputation points, ensuring that only active and trusted members can share their finds.

Community Picks

Type aliases can express any type. Interfaces can't express unions, mapped types, or conditional types. Interfaces have been present since the very first version of TypeScript. They're inspired by object-oriented programming and allow you to use inheritance to create types.

Type vs Interface: Which Should You Use In 2023?

Quick explanation was just what I needed. Thank you 🤘

Interesting article! Info about computed types when we use “&amp;” surprised me. Thank you)

Really glad so many of you find Matt’s article(s) useful! Do yourselves a favour and also check out his YouTube channel: <a href="https://www.youtube.com/@mattpocockuk" target="_blank" rel="noopener nofollow">https://www.youtube.com/@mattpocockuk</a>