update for demo

Author: jessepollak

src/components/Container.jsx

@@ -16,6 +16,7 @@ let Icon = (props) => {
 }
 
 let Version = (props) => {
+    if (!Extension.isExtension()) return <span />
     return (
       <a className={styles.version} href="https://github.com/jessepollak/command/releases" target="_blank">
       Private beta v{ Extension.getVersion() }

src/lib/extension.js

@@ -1,3 +1,8 @@
+export function isExtension() {
+  return !!(window.chrome && window.chrome.runtime && window.chrome.runtime.getManifest)
+}
 export function getVersion() {
-  return chrome.runtime.getManifest().version
+  if (isExtension()) {
+    return chrome.runtime.getManifest().version
+  }
 }