Examine source code of Reject All Cookies

{
  "manifest_version": 3,
  "name": "Reject All Cookies",
  "version": "1.0.8",
  "description": "Automatically clicks 'reject/decline' on cookie consent banners as you browse.",
  "author": "dkorecko",
  "homepage_url": "https://github.com/dkorecko/RejectAllCookies",
  "browser_specific_settings": {
    "gecko": {
      "id": "reject-all-cookies@local.extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Reject All Cookies"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "match_about_blank": false,
      "run_at": "document_start",
      "js": [
        "content/wordlist.js",
        "content/rules.js",
        "content/content.js"
      ]
    }
  ]
}