Examine source code of UnDistracted - Hide Facebook, YouTube Feeds

{
  "name": "UnDistracted - Hide Facebook, YouTube Feeds",
  "version": "3.5.4",
  "description": "Rise above the time-sinks",
  "permissions": [
    "storage",
    "webNavigation"
  ],
  "optional_permissions": [
    "scripting"
  ],
  "optional_host_permissions": [
    "*://*.instagram.com/*",
    "*://*.x.com/"
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self'; object-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; connect-src https://undistracted-server.onrender.com/"
  },
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitter.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-twitter.js"
      ]
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-youtube.js"
      ]
    },
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-facebook.js"
      ]
    },
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-reddit.js"
      ]
    },
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-netflix.js"
      ]
    },
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "undistracted-linkedin.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "index.html",
    "default_title": "UnDistracted"
  },
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "undistracted.developer@gmail.com",
      "strict_min_version": "128.0"
    }
  }
}