Function tail

packages/dockview-core/src/array.ts:1–7

(arr: T[])

export function tail<T>(arr: T[]): [T[], T] {
    if (arr.length === 0) {
        throw new Error('Invalid tail call');
    }

    return [arr.slice(0, arr.length - 1), arr[arr.length - 1]];
}

export function last<T>(arr: T[]): T | undefined {
    return arr.length > 0 ? arr[arr.length - 1] : undefined;