Use const instead of var

Flamenco · web-flow · commit 0ff6bf22be60 · 2017-12-28T09:42:29.000-05:00
diff --git a/element-details/main.js b/element-details/main.js
@@ -2,7 +2,7 @@ customElements.define('element-details',
   class extends HTMLElement {
     constructor() {
       super();
-      var template = document
+      const template = document
         .getElementById('element-details-template')
         .content;
       const shadowRoot = this.attachShadow({mode: 'open'})
