type vs interface in TypeScript - What You Really Need to Know

You've definitely come across this debate more than once: type or interface? Most answers online boil down to "it depends" or "use interface for objects, type for everything else." That's not wrong, but it's incomplete. This article breaks the topic down properly. What is type , what is interface interface is a contract describing the shape of an object. It's been in TypeScript from the beginning and for years was the way to describe data structures. Semantically it says: "every value of this ty