Examine source code of MTG Quick Search

{
  "manifest_version": 2,
  "name": "MTG Quick Search",
  "version": "1.0.8",
  "description": "Easily look up MTG cards without leaving the page you are currently on, using a context menu item or keyboard shortcut.",
  "permissions": [
    "activeTab",
    "contextMenus",
    "https://api.scryfall.com/*",
    "storage"
  ],
  "icons": {
    "16": "icon16x16.png",
    "48": "icon48x48.png",
    "96": "icon96x96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "mtgQuickSearch.css"
      ],
      "js": [
        "browser-polyfill.min.js",
        "add-listeners.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "background.js"
    ]
  },
  "commands": {
    "mtg-quick-search-find-card": {
      "suggested_key": {
        "default": "Alt+Shift+S"
      },
      "description": "Search Scryfall for selected text"
    },
    "mtg-quick-search-enter-card": {
      "suggested_key": {
        "default": "Alt+Shift+E"
      },
      "description": "Opens textbox to type a card name to search for"
    }
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mtg-quick-search@fluffystingray.com"
    }
  },
  "developer": {
    "url": "https://github.com/psychedelicious/mtg-quick-search"
  }
}