Examine source code of YouTube Detox

{
  "manifest_version": 2,
  "name": "YouTube Detox",
  "version": "1.3.1",
  "homepage_url": "https://github.com/lemjoe/yt-detox",
  "description": "Transform YouTube into a focused, distraction-free space. Remove Shorts, recommendations, and stay in control of your viewing experience.",
  "author": "Alexander Ignatov",
  "browser_specific_settings": {
    "gecko": {
      "id": "yt-detox@example.com",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "*://*.youtube.com/*",
    "*://*.returnyoutubedislikeapi.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "css": [
        "styles/youtube-detox.css"
      ],
      "js": [
        "content-scripts/youtube-detox.js",
        "content-scripts/return-youtube-dislike.js"
      ],
      "run_at": "document_end"
    }
  ]
}