Examine source code of Time Wasted Scrolling

{
  "manifest_version": 2,
  "name": "Time Wasted Scrolling",
  "version": "1.1",
  "description": "Shows the time you've wasted scrolling Mastodon",
  "content_scripts": [
    {
      "matches": [
        "*://mastodon.gamedev.place/*",
        "*://mastodon.social/*",
        "*://mstdn.social/*",
        "*://infosec.exchange/*",
        "*://social.vivaldi.net/*",
        "*://hachyderm.io/*",
        "*://mastodon.world/*",
        "*://techhub.social/*",
        "*://social.tchncs.de/*",
        "*://kolektiva.social/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a15ee7dc-f4cd-494b-81b5-7ffd16101a48}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {}
  }
}