What is the best way to convert one array of types to another array of types in Typescript?

Imagine you have the following:

type AwesomeTuple = [string, number, boolean]

Now, you're looking to transform that type using a generic approach:

type AmazingGeneric<T extends any[]> = ... 

In this scenario:

AmazingGeneric<AwesomeType> would result in [Wrapper<string>, Wrapper<number>, Wrapper<boolean>] 

How should one proceed?

Answer №1

If you're looking to implement a mapped type, you can use the following code:

type CoolGeneric<T extends any[]> = { [K in keyof T]: Wrapper<T[K]> }

In essence, this code assigns a type to each key (where the indices of a tuple acts as keys) based on the property type T[K].

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