Examine source code of Flight Memory Backup

{
  "name": "Flight Memory Backup",
  "description": "Export and backup flight data from FlightMemory.com into a CSV. Uses Flighty CSV format.",
  "version": "1.1.2",
  "manifest_version": 3,
  "homepage_url": "https://flightmemorybackup.com",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "*://flightmemory.com/*",
    "*://*.flightmemory.com/*",
    "*://flugstatistik.de/*",
    "*://*.flugstatistik.de/*"
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://flightmemory.com/*",
        "https://*.flightmemory.com/*"
      ],
      "js": [
        "js/browser-compat.js",
        "js/airlineCodes.js",
        "js/utils.js",
        "js/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "flight-memory-backup@flightmemorybackup.com",
      "strict_min_version": "109.0"
    }
  }
}