Examine source code of Cookie Sync

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "2.0",
  "description": "__MSG_extensionDescription__",
  "default_locale": "zh_CN",
  "author": "julyraining",
  "homepage_url": "https://gitee.com/julyraining/firefox-cookie-injector",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cookie-sync@julyraining",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "cookies",
    "<all_urls>",
    "tabs",
    "storage",
    "activeTab"
  ],
  "browser_action": {
    "default_title": "Cookie Sync",
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}