why it's not working?

[muhammadsalam]

1. installed
   npm i react-datepicker --save
2. trying use
   but vsc doesn't give any hints..
   ok, I imported it manually, but it still doesn't work

import { FC } from "react";
import styles from "./Input.module.sass";
import {DatePicker} from 'react-datepicker';

export const Calendar: FC = () => {
    return (
        <div className={styles.datepicker}>
            Period:
            <DatePicker />
        </div>
    );
};

as i specified the types
declare module 'react-datepicker';