Get all arrays of consecutive elements

JavaScript

const getConsecutiveArrays = (arr, size) =>
  (size > arr.length ? [] : arr.slice(size - 1).map((_, i) => arr.slice(i, size + i)))

TypeScript

const getConsecutiveArrays = <T,_>(arr: T[], size: number): T[][] =>
  (size > arr.length ? [] : arr.slice(size - 1).map((_, i) => arr.slice(i, size + i)))

Examples

getConsecutiveArrays([1, 2, 3, 4, 5], 2) // [[1, 2], [2, 3], [3, 4], [4, 5]]
getConsecutiveArrays([1, 2, 3, 4, 5], 3) // [[1, 2, 3], [2, 3, 4], [3, 4, 5]]
getConsecutiveArrays([1, 2, 3, 4, 5], 6) // []