Examine source code of Trainlog Utilities

{
  "manifest_version": 2,
  "name": "Trainlog Utilities",
  "version": "0.6.1",
  "icons": {
    "16": "assets/icons/favicon-16.png",
    "32": "assets/icons/favicon-32.png",
    "48": "assets/icons/favicon-48.png",
    "128": "assets/icons/favicon-128.png"
  },
  "description": "A extension that allows to import full trips with one click",
  "homepage_url": "https://trainlog.me/",
  "short_name": "TLU",
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://fahrplan.oebb.at/*",
    "*://*.bahn.de/web/api*",
    "*://*.interrail.eu/*",
    "*://*.eurail.com/*",
    "*://*.trainlog.me/*"
  ],
  "content_security_policy": "script-src 'self' https://*.trainlog.me; object-src 'self'",
  "author": "SimuNews",
  "applications": {
    "gecko": {
      "id": "{e73eb3bd-7da8-4dcd-8023-398438fe6431}"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icons/favicon-16.png",
      "32": "assets/icons/favicon-32.png",
      "48": "assets/icons/favicon-48.png",
      "128": "assets/icons/favicon-128.png"
    },
    "default_title": "TLU",
    "browser_style": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "js/background.bundle.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://fahrplan.oebb.at/*"
      ],
      "js": [
        "js/scotty.bundle.js"
      ],
      "css": [
        "css/scotty.css"
      ]
    },
    {
      "matches": [
        "*://*.bahn.de/*"
      ],
      "js": [
        "js/dbahn.bundle.js"
      ],
      "css": [
        "css/dbahn.css"
      ]
    },
    {
      "matches": [
        "*://*.interrail.eu/*",
        "*://*.eurail.com/*"
      ],
      "js": [
        "js/interrail.bundle.js"
      ],
      "css": [
        "css/interrail.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "assets/icons/logo_trainlog.png",
    "assets/icons/dbahn.png",
    "assets/icons/interrail.png"
  ]
}