How to get type of one from object key and use for function argument in TS?

Question

typescript

Hello, there is a generic function that accepts a function that returns a promise with a given data type. The problem is that this data type can have a different unique key, id or uuid, while in the case of id it is a number, and uuid is a string. How to make TS understand that if the id key is available, then the argument accepted in the fetcher function must be a number, and if uuid, then a string?

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Answer 1

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Answer 2

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