Examine source code of Goodreads Review Shield for Authors

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "support@kopptech.com",
      "strict_min_version": "42.0"
    }
  },
  "name": "Goodreads Review Shield for Authors",
  "description": "Goodreads for Authors to protect their mental health that hides ratings and low reviews.",
  "version": "1.0.1",
  "browser_action": {
    "default_icon": "images/icon64.png",
    "default_popup": "options.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.goodreads.com/*"
      ],
      "js": [
        "js/common.js",
        "js/goodreads.js"
      ],
      "css": [
        "css/goodreads.css"
      ]
    }
  ],
  "permissions": [
    "storage"
  ]
}