TypeScript Index Signature Explained

Demystifying TypeScript Index Signatures for Enhanced Code Flexibility

Sunny Sun
Level Up Coding
Published in
5 min readJan 9, 2024

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Photo by Maksym Kaharlytskyi on Unsplash

Index signatures in TypeScript provide a way to define a dynamic data structure when the properties of an object aren’t known beforehand, but the types of properties are known. They allow for dynamic property access and are particularly useful when working with objects with a variable…

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