refactor(extension): load bg/sw script exclusively based on browser t…

…arget

Although manifest accepts both at the same time, a warning
is displayed in the extension logs, which can be avoided
by using only the relevant one based on browser type

apps/browser-extension-wallet/manifest.json

@@ -10,8 +10,7 @@
     "128": "icon128.png"
   },
   "background": {
-    "service_worker": "./js/background.js",
-    "scripts": ["./js/background.js"]
+    "service_worker": "./js/background.js"
   },
   "action": {
     "default_popup": "popup.html"

apps/browser-extension-wallet/webpack-utils.js

@@ -68,7 +68,10 @@ const transformManifest = (content, mode) => {
           }
         };
       }
+      // Firefox: Reading text is only available for extensions with the Web Extension clipboardRead permission
       manifest.permissions = [...manifest.permissions, 'clipboardRead'];
+      // The background script in Firefox is a hidden DOM page
+      manifest.background = { scripts: ['./js/background.js'] };
     } else if (process.env.BROWSER === 'chrome') {
       manifest.key = process.env.LACE_EXTENSION_KEY;
     }