Examine source code of TheSpamminator

{
  "manifest_version": 2,
  "name": "TheSpamminator",
  "version": "1.2.1",
  "description": "Remove banger alert spams from comment section of mangakakalot & manganato",
  "icons": {
    "16": "images/logo/spam-logo-16.png",
    "32": "images/logo/spam-logo-32.png",
    "64": "images/logo/spam-logo-64.png"
  },
  "web_accessible_resources": [
    "images/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/logo/spam-logo-16.png",
      "32": "images/logo/spam-logo-32.png",
      "64": "images/logo/spam-logo-64.png",
      "128": "images/logo/spam-logo-128.png"
    },
    "default_title": "The Spamminator",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "vendor/browser-polyfill.min.js",
      "scripts/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.facebook.com/*",
        "https://web.facebook.com/*"
      ],
      "js": [
        "vendor/browser-polyfill.min.js",
        "scripts/clean-spams.js"
      ],
      "css": [
        "styles/facebook-comment-plugin.css"
      ],
      "all_frames": true
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0bf269a-5f88-4a5f-bc2f-91c32c12960e}"
    }
  }
}