Gets values from middle.
This is part of package extra-array.
array.middle(x, [i], [n]);
// x: an array
// i: start index (0)
// n: number of values (1)const array = require("extra-array");
var x = [1, 2, 3];
array.middle(x, 1, 1);
// [ 2 ]
array.middle(x, 1, 2);
// [ 2, 3 ]