'How can I specify U in a type expression involving Array<T>.prototype.map<U>?
In the following example
type Test = ReturnType<Array<string>['map']>
the type of Test is unknown[].
How can I parameterize the map function so that the type of Test becomes e.g. number[]?
I would expect something like
type Test = ReturnType<Array<string>['map']<number>>
but this is invalid syntax.
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