Based on Rust's windows iteration method

windows.js

Object.defineProperty(Array.prototype, 'windows', {
  // Based on Rust's windows iteration method
  // Unlike regular slice, these slices overlap, or rather panes through the array, hence the name windows
  // If the size is greater than the slice it will not include it.
  value: function(size) {
    const length = this.length;
    const arr = [];

    for (let i = 0; i < length - size + 1; i++) {
      const slice = [];
      for (let j = i; j < i + size; j++) {
        slice.push(this[j]);
      }
      arr.push(slice);
    }
    return arr;
  }
});