Examine source code of MTG Enhancements

{
  "manifest_version": 3,
  "name": "MTG Enhancements",
  "version": "0.5",
  "description": "Add features to popular MTG websites.",
  "icons": {
    "16": "icon_16.png",
    "32": "icon_32.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.scryfall.com/card/*",
        "https://*.scryfall.com/search*"
      ],
      "js": [
        "scryfall.js"
      ]
    },
    {
      "matches": [
        "https://*.mtgtop8.com/topcards*"
      ],
      "js": [
        "mtgtop8.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "options_page": "options.html",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1e0b163-fd02-45de-b694-08515b0a0b80}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}