Examine source code of Hololive Chat Capturer

{
  "manifest_version": 3,
  "author": "nyanyadesu",
  "name": "Hololive Chat Capturer",
  "description": "Capture the translation on Hololive's Livestream chat.",
  "homepage_url": "https://hololive-chat-capturer.github.io",
  "version": "2.4.3",
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "js/app.js"
      ],
      "css": [
        "css/responsive.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "js/background_script.js"
    ]
  },
  "action": {
    "default_icon": {
      "19": "img/icon-19x19.png",
      "38": "img/icon-38x38.png"
    },
    "default_title": "Hololive Chat Capturer",
    "default_popup": "action/index.html"
  },
  "options_ui": {
    "page": "options/index.html",
    "browser_style": true
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://*.youtube.com/*"
  ],
  "icons": {
    "16": "img/icon-16x16.png",
    "48": "img/icon-48x48.png",
    "96": "img/icon-96x96.png",
    "128": "img/icon-128x128.png",
    "256": "img/icon-256x256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d3825aeb-e60f-43da-b5f6-cbf36c6f614b}",
      "strict_min_version": "109.0"
    }
  }
}