Dr. Axel Rauschmayer • 2/19/2025

The bottom type <code>never</code> in TypeScript

This article provides an in-depth look at TypeScript's `never` type, explaining its nature as a bottom type (the empty set) and its behavior in type operations. It covers practical use cases such as filtering union types with conditional types and performing compile-time exhaustiveness checks in switch statements, complete with code examples.

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#TypeScript #type system #union types