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by throwaway09432 1191 days ago
Can you map over this and preserve the NonEmptyArray type?
1 comments

Do you mean pass in a type?

    type NonEmptyArray<T> = [T, ...T[]];
I mean if I have a NonEmptyArray say xs, and I then xs.map(x=>2*x), will the result of this expression be a NonEmptyArray ?
No, unfortunately it will just be number[] as the return type.