The idea behind it was to do type narrowing with the help of user-defined type guards.

In isEnumKey and isEnumValue, why is the return type based on T rather than just boolean?
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Chris Johnson
Oleh Baranovskyi
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Jan 23, 2022
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The idea behind it was to do type narrowing with the help of user-defined type guards.
https://www.typescriptlang.org/docs/handbook/advanced-types.html#user-defined-type-guards
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Written by Oleh Baranovskyi645 Followers
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Frontend Lead & Architect | Web community manager https://obaranovskyi.com/
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