Type Alias Flatten<T>

Flatten: Tuple.Flatten<T>

Flattens a nested readonly array/tuple T by one level. Delegates to Tuple.Flatten.

Type Parameters

T extends readonly (readonly unknown[])[]
A readonly array/tuple where elements are themselves readonly arrays/tuples.

Returns

A new flattened array/tuple type.

Example

type F1 = List.Flatten<[[1, 2], [3, 4]]>; // readonly [1, 2, 3, 4]
type F2 = List.Flatten<[readonly number[], readonly string[]]>; // readonly (string | number)[]
type F3 = List.Flatten<[[1], [2, [3]]]>; // readonly [1, 2, [3]] (only flattens one level)