详解在React项目中如何集成和使用web worker

npx create-react-app testworker --template=typescript

import React from 'react';
import './App.css';
import workerScript from './workers/parseJSON.js';
import testData from './data/package.json';

function App() {
  const handleButtonClick = () => {
    const workerInstance = new Worker(workerScript);

    workerInstance.onmessage = function(event: MessageEvent) {
      const { data } = event;
      console.log('Received data from worker: ', data);
    };

    workerInstance.postMessage({
      msg: 'parse it',
      payload: JSON.stringify(testData)
    });
  };

  return (
    <div className="App">
      <header className="App-header">
        <button onClick={handleButtonClick}>
          Click to Load Worker
        </button>
      </header>
    </div>
  );
}

export default App;

const workerCode = () => {
  // Listen to message from the main thread
  self.onmessage = function (event) {
    const { data } = event;
    console.log('Data received by worker: ', data);
    if (data) {
      const { msg, payload } = data;
      let reply, result, startTime, endTime;
      if (msg === 'parse it') {
        reply = 'parsed';
        startTime = new Date().getTime();
        result = JSON.parse(payload);
        endTime = new Date().getTime();
      }
      self.postMessage({ msg: reply, payload: result, cost: endTime - startTime });
    }
  };
};

let code = workerCode.toString();
code = code.substring(code.indexOf('{') + 1, code.lastIndexOf('}'));
const blob = new Blob([code], { type: 'application/javascript' });
const workerScriptURL = URL.createObjectURL(blob);

export default workerScriptURL;

{
  "name": "example-package",
  "version": "1.0.0",
  "description": "An example package for testing Web Worker.",
  "keywords": ["react", "webworker", "testing"],
  //... other package.json properties
}