Arrays of consecutive elements

Finds all arrays of consecutive elements.

• Use Array.prototype.slice() to create an array with n - 1 elements removed from the start.
• Use Array.prototype.map() and Array.prototype.slice() to map each element to an array of n consecutive elements.

const findConsecutive = (arr, n) =>
  arr.slice(n - 1).map((v, i) => arr.slice(i, i + n));

findConsecutive([1, 2, 3, 4, 5], 2);
// [[1, 2], [2, 3], [3, 4], [4, 5]]