Examine source code of Kill Fbclid

{
  "manifest_version": 2,
  "name": "Kill Fbclid",
  "description": "Kill Fbclid",
  "version": "1.0.4",
  "default_locale": "en",
  "author": "Jakub Bouček",
  "homepage_url": "https://github.com/jakubboucek/kill-fbclid",
  "icons": {
    "16": "fbclid_16.png",
    "48": "fbclid_48.png",
    "128": "fbclid_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "exclude_matches": [
        "https://www.facebook.com/*"
      ],
      "js": [
        "fbclid.js"
      ],
      "run_at": "document_idle"
    }
  ]
}