<ul><li>TypeScript's Index Signature is a helpful feature when dealing with data response whose structure is not known.</li><li>Instead of using 'any' type, Index Signature allows you to define the types or interfaces of your data response dynamically.</li><li>Using Index Signature, you can extend the data type as much as you like and catch other key-value pairs at once.</li><li>It is recommended to define explicit response schemas if you know the structure, but Index Signature is a good alternative when unsure.</li></ul>

TypeScript Best Practices — Using Index Signature

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