Examine source code of Youtube Pro plus

{
  "manifest_version": 3,
  "name": "Youtube Pro Plus",
  "version": "6",
  "description": "A Free powerful extension for youtube with more than 16 features to completely overhaul your youtube experience.",
  "background": {
    "service_worker": "background-sw.js",
    "scripts": [
      "background-sw.js"
    ]
  },
  "permissions": [
    "activeTab",
    "alarms",
    "clipboardWrite",
    "declarativeNetRequestWithHostAccess",
    "downloads",
    "notifications",
    "offscreen",
    "storage",
    "tabs",
    "unlimitedStorage",
    "webRequest"
  ],
  "host_permissions": [
    "*://formbold.com/*",
    "*://ssvid.net/*",
    "*://vidssave.com/*",
    "*://www.ssvid.net/*",
    "*://www.vidssave.com/*",
    "*://www.youtube.com/*",
    "*://youtube.com/*",
    "https://*.googlevideo.com/*",
    "https://*.onrender.com/*",
    "https://*.youtube.com/*",
    "https://api.github.com/*",
    "https://catbox.moe/*",
    "https://files.catbox.moe/*",
    "https://raw.githubusercontent.com/*",
    "https://returnyoutubedislikeapi.com/*",
    "https://sponsor.ajay.app/*"
  ],
  "icons": {
    "16": "imgs/icon16.png",
    "32": "imgs/icon32.png",
    "48": "imgs/icon48.png",
    "128": "imgs/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "imgs/icon16.png",
      "32": "imgs/icon32.png",
      "48": "imgs/icon48.png",
      "128": "imgs/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "js": [
        "browser-compat.js",
        "content.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "js": [
        "browser-compat.js",
        "sound-booster.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://ssvid.net/*",
        "*://www.ssvid.net/*",
        "*://vidssave.com/*",
        "*://www.vidssave.com/*"
      ],
      "js": [
        "browser-compat.js",
        "inject-download.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "js": [
        "browser-compat.js",
        "room-sync.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "js": [
        "return-youtube-dislike.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "js": [
        "sponsorblock.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "all_frames": true,
      "css": [
        "content-scripts/youtube.css"
      ],
      "js": [
        "content-scripts/youtube.js"
      ]
    },
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "all_frames": true,
      "css": [
        "content-scripts/youtube-main.css"
      ],
      "js": [
        "content-scripts/youtube-main.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "all_frames": false,
      "run_at": "document_start",
      "js": [
        "content-scripts/page-sabr-fetch.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/iframe-mute.js",
        "content-scripts/visibility-spoof.js"
      ],
      "world": "MAIN"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "features.css",
        "theme.css",
        "block-popups.css",
        "inject-speed.js",
        "imgs/playericon.svg",
        "imgs/playericon_inactive.svg",
        "imgs/redcircle.svg"
      ],
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ]
    },
    {
      "resources": [
        "offscreen.html",
        "download-worker.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-pro-plus@archimetrix",
      "strict_min_version": "128.0"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "strip-youtube-frame-headers",
        "enabled": true,
        "path": "rules/strip-youtube-frame-headers.json"
      }
    ]
  }
}