Type Alias Tail<A>

Tail: A extends readonly []
? readonly []
: A extends readonly [unknown, ...(infer R)] ? Readonly<R> : Readonly<A>

Gets a new readonly tuple type containing all elements of A except the first one. If A is empty or has only one element, returns readonly []. If A is a general array type, returns Readonly<A>.

Type Parameters

A extends readonly unknown[]
The readonly array or tuple type.

Returns

A new readonly tuple type with the first element removed.

Example

type T1 = Tuple.Tail<[1, 2, 3]>; // readonly [2, 3]
type T2 = Tuple.Tail<[1]>; // readonly []
type T3 = Tuple.Tail<[]>; // readonly []
type T4 = Tuple.Tail<readonly number[]>; // readonly number[]

Type Alias Tail<A>

Type Parameters

Returns

Example

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