Examine source code of Kicklet

{
  "manifest_version": 2,
  "name": "Kicklet",
  "version": "1.0.3",
  "description": "Kick Up Your Stream with Kicklet!",
  "author": "Kicklet.app",
  "homepage_url": "https://kicklet.app",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.kick.com/*"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "overlay.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f1f5a40-414b-4485-bbb5-bad75fffd60f}"
    }
  }
}