Add split function

[ppeeou]

Suggestion

⭐ Suggestion

Splits string by separator. (not support unicode)

💻 Use Cases

const iter = split(',', '1,2,3,4,5,6');
iter.next(); // 1
iter.next(); // 2
iter.next(); // 3
iter.next(); // 4
iter.next(); // 5
iter.next(); // 6
iter.next(); // undefined