import React, {useState} from 'react'; import ItemsList from './ItemsList'; import AddItemForm from './AddItemForm'; const ItemsApp = () => { const [items, setItems] = useState([]); const addItems = (newitems) => { setItems(items.concat(newitems)); }; const removeItem = (index) => { let res = items.filter(item => items.indexOf(item) !== index); setItems(res); }; return (