app.js

import React from 'react';
import { Route } from 'react-router-dom';

import { CatchRateCalc } from './features/catchRateCalc/catchRateCalc.js';

export function App() {
  return (
    <>
      <Route exact path={'/'}>
        <CatchRateCalc label={'RateCalc'} />
      </Route>
    </>
  );
}