Examine source code of GIMPS Opener

{
  "manifest_version": 2,
  "name": "GIMPS Opener",
  "version": "1.3",
  "author": "Teal Dulcet",
  "description": "Open Great Internet Mersenne Prime Search (GIMPS) 2ᴾ-1 exponent numbers.",
  "homepage_url": "https://github.com/tdulcet/GIMPS-Opener",
  "omnibox": {
    "keyword": "exp"
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "icons": {
    "32": "icons/icon_32.png",
    "64": "icons/icon_64.png",
    "128": "icons/icon_128.png"
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "contextMenus",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gimps@tealdulcet.com",
      "strict_min_version": "112.0"
    }
  }
}