react native calendars

import { Calendar } from 'react-native-calendars'; export default () => { const [markedDates, setMarkedDates] = React.useState(null); const [dates, setDates] = React.useState(['2021-01-05', '2021-01-20']); function addDates() { let obj = dates.reduce( (c, v) => Object.assign(c, { [v]: { marked: true, dotColor: 'red' }, }), {}, ); console.log(obj); setMarkedDates(obj); } return ( { addDates(); }}..