Examine source code of FS Addon Compare

{
  "manifest_version": 3,
  "name": "FS Addon Compare",
  "version": "1.2.3",
  "description": "FS Addon Compare: See where to buy flight sim addons & compare prices directly on developer stores. Save money & time!",
  "homepage_url": "https://www.fsaddoncompare.com",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.aerosoft.com/*/shop/*",
        "*://*.aerosoft.com/*/Shop/*",
        "*://*.contrail.shop/**/products/*",
        "*://*.contrail.shop/products/*",
        "*://store.flightsim.com/*",
        "*://*.inibuilds.com/products/*",
        "*://*.justflight.com/product/*",
        "*://*.orbxdirect.com/product/*",
        "*://*.simmarket.com/*",
        "*://store.flightsim.to/product/*",
        "*://flightsim.to/store/product/*",
        "*://msfsmarket.place/aircraft/*",
        "*://msfsmarket.place/airports/*",
        "*://msfsmarket.place/world/*",
        "*://msfsmarket.place/activities/*"
      ],
      "js": [
        "util.js",
        "fsa.js",
        "content.js"
      ],
      "css": [
        "variables.css",
        "content.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/*",
        "icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c2e37b52-6568-478b-8e55-6be6a44e47ae}"
    }
  }
}