Examine source code of Fbclid Blocker

{
  "name": "Fbclid Blocker",
  "version": "2.1.3",
  "author": "Zdeněk Pavlátka",
  "description": "Removes fbclid parameter from all links on facebook.",
  "browser_action": {
    "default_popup": "fbclid-blocker.html",
    "default_icon": {
      "16": "fbclid-blocker-16.png",
      "32": "fbclid-blocker-32.png",
      "64": "fbclid-blocker-64.png",
      "128": "fbclid-blocker-128.png",
      "256": "fbclid-blocker.png"
    }
  },
  "icons": {
    "16": "fbclid-blocker-16.png",
    "32": "fbclid-blocker-32.png",
    "64": "fbclid-blocker-64.png",
    "128": "fbclid-blocker-128.png",
    "256": "fbclid-blocker.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.facebook.com/*"
      ],
      "js": [
        "fbclid-blocker-fb.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "exclude_matches": [
        "https://www.facebook.com/*"
      ],
      "js": [
        "fbclid-blocker-nonfb.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "fbclid-blocker@zdepav.cz"
    }
  },
  "manifest_version": 2
}