Examine source code of LV Active Members

{
  "manifest_version": 2,
  "name": "LV Active Member Parser",
  "short_name": "LVMembercount",
  "version": "5.1.7",
  "developer": {
    "name": "quartertone",
    "url": "https://vox.quartertone.net/"
  },
  "description": "Automate the process of checking for active LibriVox members.",
  "icons": {
    "48": "img/mcount-logo.svg",
    "96": "img/mcount-logo.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "membercount@vox.quartertone.net"
    }
  },
  "browser_action": {
    "default_icon": "img/mcount-logo.svg",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "downloads"
  ],
  "background": {
    "scripts": [
      "dexie.min.js",
      "do_basevars.js",
      "do_background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://forum.librivox.org/ucp.php*",
        "*://forum.librivox.org/memberlist.php*"
      ],
      "js": [
        "do_basevars.js",
        "do_gettimezone.js"
      ]
    },
    {
      "matches": [
        "*://forum.librivox.org/memberlist.php*"
      ],
      "js": [
        "do_action.js"
      ]
    },
    {
      "matches": [
        "*://librivox.org/search*"
      ],
      "js": [
        "do_basevars.js",
        "do_catalogaction.js"
      ]
    }
  ]
}