确保 Nodejs Worker 准备好工作

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确保 Nodejs Worker 准备好工作

如何确保nodejs Worker准备好工作？

index.js

const path = require('node:path')
const {Worker, BroadcastChannel} = require('node:worker_threads')

const broadcast = new BroadcastChannel('channel-worker')
const worker = new Worker(
    path.join(__dirname, 'worker.js'),
    {execArgv: ['--no-experimental-fetch']}
)

worker.on('online', () => {
    console.log('online');
    broadcast.postMessage('test')
})

setTimeout(() => {
    broadcast.postMessage('test2')
}, 3000)

worker.js

const {BroadcastChannel} = require('node:worker_threads')
const broadcast = new BroadcastChannel('channel-worker')

console.log('start worker');

broadcast.onmessage = msg => {
   console.log(msg.data);
}

控制台输出：

online
start worker
test2

预计在 worker.js 中触发事件

online