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January 20, 2026 · 1 min read

How would you design a TypeScript API to ensure type safety while allowing for flexibility in response formats?

To ensure type safety in a TypeScript API while maintaining flexibility, I would use generics for response types and define a union type for different response formats. This allows callers…

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SOFTWARE_ARCHITECT // AI_ENGINEER

📅 Jan 20, 2026 ⏱ 1 min read

HW

How would you design a TypeScript API to ensure type safety while allowing for flexibility in response formats?

COVER // HOW WOULD YOU DESIGN A TYPESCRIPT API TO ENSURE TYPE SAFETY WHILE ALLOWING FOR FLEXIBILITY IN RESPONSE FORMATS?

To ensure type safety in a TypeScript API while maintaining flexibility, I would use generics for response types and define a union type for different response formats. This allows callers to specify the expected shape of the response without losing type information, thus preventing runtime errors.

api generics typesafety typescript

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