Get n non overlapping m-sized samples from an array

Given an array, how can I extract n non overlapping random samples of size m from it?

For example, given the array:

const arr = [1, 2, 3, 4, 5, 6, 7, 8];

calling sample(arr, 3, 2) would for example return [[7, 8], [4, 5], [2, 3]], calling sample(arr, 2, 4) would necessarily return [[1, 2, 3, 4], [5, 6, 7, 8], and calling sample(arr, 5, 2) would throw an error.