Question

给定tsconfig.json，

{

    "compilerOptions": {

      "lib": ["es2015", "dom"]
    },
    "files": [
      "./project1/tstut.ts",
      "./project1/worker.ts"

    ]
  }

和folder structure

1）

以下代码（./project1/tstut.ts），

if(window.Worker){
  console.log('Workers are available');
}
....
let worker: Worker = new Worker('worker.js');
worker.postMessage('do some work')

如何解决以下打字稿错误？

Property 'Worker' does not exist on type 'Window'

2）

对于下面的工作人员代码（./project1/worker.ts），

self.addEventListener('message', (e) => {
    // console.log(e)
    if(e.data === 'do some work'){
        console.log('Worker is about to start some work');
        let count: number =0;
        for(let i: number=0; i<1000; i++){
            count += i;
        }
        self.postMessage({message:count});
    }

})

JS允许语法self.postMessage({message: count})

https://github.com/Microsoft/TypeScript/issues/582

鉴于scenario不符合我的情况。

如何解决postMessage()的以下错误？在运行tsc

时

Expecting 2-3 arguments, but got 1

Answer 1

工人不会住在窗户对象上。

public function __construct() {
    parent::__construct();
    $this->load->helper('url');
    $this->load->helper('form');
    $key = $this->input->post('key');

    if(!logged_in() || (logged_in() && $key=='')) {
      redirect('/');
      die;
    }
}

要解决您的webworker postMessage错误，请使用＆＃39; webworkers＆＃39; tsconfig中的lib或以下

if (typeof(Worker) !== "undefined") {
    // Yes! Web worker support!
    // Some code.....
} else {
    // Sorry! No Web Worker support..
}

您的代码示例

<强> tstut.js

const ctx: Worker = self as any;
...
ctx.postMessage({message:count});

worker.js （无需在此处检查工人支持）

if(typeof(Worker) !== 'undefined'){
    const worker = new Worker('worker.js');
    worker.postMessage('do some work');
    worker.addEventListener('message', function (e) {
        //console.log(e);
        console.log(e.data);
    });
}

错误TS2554：预期2-3个参数，但得到1

1 个答案: