Stefan Baumgartner • 7/6/2021

TypeScript: Array.includes on narrow types

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This article discusses a specific TypeScript typing challenge where using Array.includes on an array with a narrow type (e.g., from a const assertion) causes a type error. It explains why the error occurs by examining the type definitions and provides context for when this situation arises and potential solutions.

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#TypeScript #includes #type narrowing
TypeScript: Array.includes on narrow types

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