Examine source code of KickChatOverlay

{
  "manifest_version": 2,
  "name": "kick.com Fullscreen Chat Overlay",
  "version": "0.2",
  "description": "Enhances the kick.com viewing experience by providing a fullscreen chat overlay.",
  "author": "spaghetto",
  "homepage_url": "https://github.com/r0808914/KickChatOverlay",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.kick.com/*"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0702d587-2109-4a5f-a21d-09f2743af25d}"
    }
  }
}