Examine source code of nPA

{
  "manifest_version": 2,
  "name": "nPA",
  "version": "1.27.127.1",
  "author": "__MSG_extensionAuthor__",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "icons/nPA-24.png"
  },
  "permissions": [
    "notifications",
    "storage",
    "<all_urls>",
    "tabs",
    "nativeMessaging"
  ],
  "background": {
    "scripts": [
      "background.js",
      "options.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/nPA-24.png",
    "default_title": "nPA"
  },
  "commands": {},
  "options_ui": {
    "page": "options.html"
  },
  "default_locale": "de",
  "browser_specific_settings": {
    "gecko": {
      "id": "{BA60DC51-592A-827C-AC72-6E528A720DD1}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}