run a function in a webworker and return the value to your component asynchronously

npm install use-worker-hook

import React, { useState, useEffect } from 'react';
import useWorker from 'use-worker-hook';

function add(a, b) {
  return a+b;
}
export default function App({a, b}) {
  const added = useWorker(add, 0, a); // this will run in a webworker
  return <h1>added: {added}</h1>
}