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"
    }
  }
}