Dr. Axel Rauschmayer • 2/8/2025

TypeScript: the <code>satisfies</code> operator

This article provides a detailed technical guide to TypeScript's `satisfies` operator. It explains how the operator enforces type checking at compile time without altering the value's inferred type, contrasting it with type annotations and the `as` operator. The post includes practical examples demonstrating its use with `as const` to preserve narrow types while ensuring shape conformity.

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#TypeScript #type system #type checking