optimize

app/javascript/elements/page_container.js

@@ -1,14 +1,12 @@
 export default class extends HTMLElement {
   connectedCallback () {
-    this.image.addEventListener('load', (e) => {
-      this.image.setAttribute('width', e.target.naturalWidth)
-      this.image.setAttribute('height', e.target.naturalHeight)
+    const image = this.querySelector('img')
+
+    image.addEventListener('load', (e) => {
+      image.setAttribute('width', e.target.naturalWidth)
+      image.setAttribute('height', e.target.naturalHeight)
 
       this.style.aspectRatio = `${e.target.naturalWidth} / ${e.target.naturalHeight}`
     })
   }
-
-  get image () {
-    return this.querySelector('img')
-  }
 }