A JS utility to get all but the first items in an array

rest.js

// const rest = array => array.slice(1, array.length);
const rest = ([first, ...rest]) => rest

const testArray = [1, 2, 3, 4, 5];
rest(testArray) // [2, 3, 4, 5];

rest([]).length === 0; // true
Array.isArray(rest([])); // true