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Update runAsync.md

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Angelos Chalaris
2018-01-02 10:35:33 +02:00
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### runAsync ### runAsync
Runs a function in a separate thread by using a Web Worker, allowing Runs a function in a separate thread by using a [Web Worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers), allowing long running functions to not block the UI.
long running functions to not block the UI.
Create a new `Worker` using a `Blob` object URL, the contents of which should be the Create a new `Worker` using a `Blob` object URL, the contents of which should be the stringified version of the supplied function.
stringified version of the supplied function. Immediately post the return value of calling Immediately post the return value of calling the function back.
the function back. Return a promise, listening for `onmessage` and `onerror` events Return a promise, listening for `onmessage` and `onerror` events and resolving the data posted back from the worker, or throwing an error.
and resolving the data posted back from the worker, or throwing an error.
```js ```js
const runAsync = fn => { const runAsync = fn => {