Round robin array iterator in Javascript

RoundRobinArray.js

/**
 * Round robin array iterator
 * @param {string | any[]} arr
 */
function* RoundRobinArray(arr) {
    let idx = 0;
    for (;;) {
        yield arr[idx];
        idx++;
        if (idx >= arr.length) {
            idx = 0;
        }
    }
}

// Usage
const it = RoundRobinArray(['aaaa', 'bbbb', 'cccc']);

for (let i=0; i<10; i++) {
    console.log(it.next().value);
}