Mapped Types
{ [K in keyof T]: F<T[K]> } builds a new object type by iterating a union of keys, optionally adding or stripping ? and readonly modifiers (+/-) and renaming keys with 'as'. Homomorphic mapped types (mapping over keyof T) preserve modifiers and distribute over the original's structure.
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{ [K in keyof T]: F<T[K]> } builds a new object type by iterating a union of keys, optionally adding or stripping ? and readonly modifiers (+/-) and renaming keys with 'as'. Homomorphic mapped types (mapping over keyof T) preserve modifiers and distribute over the original's structure.
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