Examine source code of YouTube Focus (Forked)

{
  "manifest_version": 2,
  "name": "YouTube Focus (Forked)",
  "version": "1.4",
  "description": "Fork of Youtube_Focus extension. Disable the Youtube recommendations, unneccessary texts, helping you to get a more focused experience at youtube.com",
  "author": "ErenayDev",
  "homepage_url": "https://github.com/ErenayDev/YouTube-Focus",
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-focus-forked@erenaydev.proton.me",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "button/Focus48.png",
    "96": "button/Focus96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "*://*.youtube.com/*",
    "storage"
  ],
  "browser_action": {
    "default_icon": "button/Focus48.png",
    "default_title": "YouTube Focus (Forked)",
    "default_popup": "popup/youtube_focus.html"
  }
}