Examine source code of TrackKnight

{
  "applications": {
    "gecko": {
      "id": "imran@solutiondots.com"
    }
  },
  "manifest_version": 2,
  "name": "TrackKnight",
  "description": "Email Tracking",
  "version": "3.3.8resigned1",
  "icons": {
    "48": "icons/icon.png"
  },
  "permissions": [
    "tabs",
    "*://*/*",
    "webRequest",
    "webRequestBlocking"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "3rd-party-libs/jquery-3.1.1.min.js",
        "3rd-party-libs/socket.io.js",
        "3rd-party-libs/moment.js",
        "3rd-party-libs/moment.timezone.js",
        "3rd-party-libs/linkify.min.js",
        "3rd-party-libs/linkify-jquery.js",
        "elements/airtrack-composer.js",
        "elements/airtrack-log.js",
        "elements/airtrack-events.js",
        "elements/airtrack-singleton.js",
        "elements/airtrack-search.js",
        "elements/airtrack-badge.js",
        "elements/airtrack-preferences.js",
        "elements/airtrack-buttons.js",
        "elements/airtrack-buttons-holder.js",
        "elements/firefox-push-notifications.js",
        "elements/airtrack-chart.js",
        "elements/airtrack-tracking-menu.js",
        "elements/airtrack-tracker.js",
        "elements/airtrack-lungs.js",
        "elements/airtrack.js",
        "elements/airtrack-node-events.js",
        "3rd-party-libs/high_chart.js",
        "3rd-party-libs/bootstrap-switch.min.js",
        "3rd-party-libs/base64.js",
        "automation/com.js",
        "airtrackapi.js",
        "startup.js"
      ]
    }
  ]
}