Node.js worker.isMainThread用法及代碼示例

worker.isMainThread

• <boolean>

如果此代碼未在 Worker 線程內運行，則為 true。

const { Worker, isMainThread } = require('node:worker_threads');

if (isMainThread) {
  // This re-loads the current file inside a Worker instance.
  new Worker(__filename);
} else {
  console.log('Inside Worker!');
  console.log(isMainThread);  // Prints 'false'.
}