Examine source code of Anu Twitch Chat Overlay

{
  "name": "Anu Twitch Chat Overlay",
  "version": "1.0.8",
  "version_name": "1.0.8",
  "description": "Show Twitch chat on top of the stream player. Read chat, send messages, claim points, and more, without leaving fullscreen mode",
  "author": "Pablo Bianciotto",
  "permissions": [
    "*://*.twitch.tv/",
    "storage"
  ],
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "exclude_matches": [
        "*://dashboard.twitch.tv/*"
      ],
      "css": [
        "assets/twitch.css",
        "assets/index.css",
        "assets/resizable.css",
        "assets/modal.css",
        "assets/settings.css",
        "assets/about.css",
        "assets/vod.css",
        "assets/microtip.css"
      ],
      "js": [
        "index.js",
        "vod.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "assets/pepoG_16x16.png",
    "48": "assets/pepoG_48x48.png",
    "128": "assets/pepoG_128x128_96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{221fdff2-37b9-44fd-a6de-93d38ca9cba1}",
      "strict_min_version": "58.0"
    }
  }
}