node.js
372 Bytes
'use strict';
// this should only run in node >= 13.2, so it
// does not need any of the intense fallbacks that old node/browsers do
var $iterator = Symbol.iterator;
module.exports = function getIterator(iterable) {
// alternatively, `iterable[$iterator]?.()`
if (iterable != null && typeof iterable[$iterator] !== 'undefined') {
return iterable[$iterator]();
}
};