# Interfaces

Describe the shape of an object with a TypeScript interface so the compiler checks every object against it, knowing that interfaces disappear from the compiled JavaScript.

![Cheat sheet: Interfaces](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/000c44debb2b48139888fcba9c9fa081.webp)

- Category: TypeScript
- Level: Apprentice
- Tags: Interface (typescript), typescript
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/working-with-typescript-interfaces-cheat-sheet