React implements countdown function component

npx create-react-app test-countdown --template=typescript
yarn add antd

// 
/* eslint-disable @typescript-eslint/no-useless-constructor */
import React from 'react';
import { Tooltip, Modal, Button } from "antd";
import './';
// In secondsfunction convertSecondsToHMS(seconds: number) {
  const hours = (seconds / 3600);
  const minutes = ((seconds % 3600) / 60);
  const remainingSeconds =  (seconds % 60);
  const formattedTime = `${hours}Hour ${minutes}minute ${remainingSeconds}Second`;
  return formattedTime;
}
// Countdown component props formattype IProps = {
  level: boolean;
  timeRemain: number;
}
// Countdown component state formattype IState = {
  level: boolean;
  timeRemain: number;
  lastMountedTime: number;
  timeCountdown: number;
  timer: any;
}
// Countdown componentclass App extends <IProps, IState> {
  state = {
    lastMountedTime: 0,
    timeRemain: 0,
    timeCountdown: 9999,
    level: false,
    timer: null,
  }
  // Extra constructor  constructor(props: IProps) {
    super(props);
  }
  // After the component is built, you need to save the level set in props and countdown to the state  // In addition, the local time needs to be saved in the state as a reference for subsequent calculations  // Finally turn on the timer and save the handle of the timer to the state  componentDidMount(): void {
    const { timeRemain, level } = ;
    const lastMountedTime = +new Date();
    const timer = setInterval(
      () => {
        (()=>({
          timeCountdown:  - (+new Date() - ) / 1000,
        }))
      }, 200
    )
    ({
      lastMountedTime,
      timeRemain,
      level,
      timer,
    })
  }
  // The timer needs to be released before the component is uninstalled  componentWillUnmount(): void {
    if() clearInterval();
  }
  // If the user is VIP, the remaining time of access is not displayed on tooltip  // If the user is a visitor, the font becomes red and the tooltip displays the countdown  // If the countdown is 0, a modal box will pop up to notify the user of the end of the trial  render() {
    const info =  ? 'VIP User' : 'Guest Mode';
    const fontColor =  ? 'black' : 'red';
    const timeCountdown =  > 0 ?  : 0;
    const toolTipInfo =  ? '' : convertSecondsToHMS(timeCountdown);
    return (
      <div className="App">
        {
          timeCountdown > 0 ? (
            <Tooltip
              title={toolTipInfo}
              placement="top"
            >
              <span
                style={{
                  color: fontColor
                }}
              >{info}</span>
            </Tooltip>
          ) : (
            <Modal
              open={true}
              destroyOnClose={true}
              getContainer={() => }
              onCancel={() => { ('') }}
              closable={true}
              maskClosable={true}
              title={`Authorization expires`}
              footer={[
                <Button size="small" onClick={() => { ('') }}>
                  Cancel
                </Button>,
              ]}
              width={215}
              bodyStyle={{
                padding: 0
              }}
            >
              <div>
                Your visitor mode has expired
              </div>
            </Modal>
          )
        }
      </div>
    )
  }
}
export default App;

// 
(
    <App timeRemain={5300} level={false}/>
);
// Strict mode is removed here