kfu-24-teacher/src/app.tsx

import React from 'react';

const App = () => {
  return (
    <h1>
      Hello world для проекта - kfu-24-teacher asd as das das d as{' '}
      <div>
        {' '}
        asda s <span>123</span>
      </div>
    </h1>
  );
};

export default App;