Web Reference: In TypeScript, interfaces fill the role of naming these types, and are a powerful way of defining contracts within your code as well as contracts with code outside of your project. Sep 11, 2025 ยท An interface in TypeScript is a contract that defines the structure of an object. It specifies the properties and methods that an object must have, without providing any implementation. Apr 26, 2024 ยท Hey everyone, my name is Xavier and in this video, weโre going to take a look at how you can define interfaces in TypeScript. This is one of TypeScriptโs biggest advantages over regular JavaScript, so letโs get going.
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