async await in image loading : <p><strong>Temp.js</strong>  </p>

<pre><code>export default class Temp {
    async addImageProcess(src){
        let img = new Image();
        img.src = src;
        return img.onload = await function(){
          return this.height;
        }
    }
}
</code></pre>

<p><strong>anotherfile.js</strong></p>

<pre><code>import Temp from '../../classes/Temp'
let tmp = new Temp()

imageUrl ="https://www.google.co.in/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png"
let image = tmp.addImageProcess(imageUrl);
console.log(image)
</code></pre>

<p>Above is my code. I have a image url and tried to get image's properties using async await but it's not working, don't understand what I missed.</p>
