Examine source code of GA4 Debugger

{
  "manifest_version": 2,
  "name": "GA4 Debugger",
  "version": "1.0.0",
  "description": "Debug GA4 tracking events in a dedicated DevTools panel. Port of the Chrome extension by James Yoon.",
  "browser_specific_settings": {
    "gecko": {
      "id": "ga4-debugger@firefox",
      "strict_min_version": "86.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "devtools_page": "devtools.html",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "devtools",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "*://*.google-analytics.com/*",
    "*://*.analytics.google.com/*",
    "*://*.g.doubleclick.net/*",
    "<all_urls>"
  ]
}