在ArkTS中如何处理耗时操作？

"buildOption": {
    "sourceOption": {
      "workers": [
        "./src/main/ets/workers/worker.ts"
      ]
    }
  }

import worker from '@ohos.worker';
let parent = worker.workerPort;
// 处理来自主线程的消息
parent.onmessage = function(message) {
console.info("onmessage: " + message)
// 发送消息到主线程
parent.postMessage("message from worker thread.")
}

import worker from '@ohos.worker';

    
let wk = 
    
new worker.ThreadWorker("entry/ets/workers/worker.ts");

// 发送消息到worker线程
wk.postMessage("message from main thread.")
// 处理来自worker线程的消息
wk.onmessage = 
    
function(message) {
    console.info("message from worker: " + message)
    // 根据业务按需停止worker线程
    wk.terminate()
}