JS: Test If Object is Iterator 💠
/* xah_is_iterator(obj) return true if obj is an iterator Note: this function is not 100% correct. It needs to test if the next function return value is an IteratorResult object. Version: 2023-01-16 */ const xah_is_iterator = ((x) => (Reflect.has(x, "next") && (typeof x["next"] === "function"))); // HHHH------------------------------ // test // matchAll return iterator console.log( xah_is_iterator("number 344".matchAll("3")), ); // array is not an iterator object console.log( xah_is_iterator([3, 4]) === false, );