Examine source code of devRant Plus

{
  "manifest_version": 2,
  "name": "devRant Plus",
  "version": "1.0.2resigned1",
  "description": "Unofficial devRant extension, aims to improve your experience with devRant!",
  "icons": {
    "48": "assets/img/icon.png",
    "96": "assets/img/icon@2x.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.devrant.io/*"
      ],
      "js": [
        "assets/js/devrant-plus.js"
      ],
      "css": [
        "assets/css/devrant-plus.css"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{cfb902e0-8035-43eb-9c10-b6bf28c7d331}"
    }
  }
}