Examine source code of Block LinkedIn Feed

{
  "manifest_version": 3,
  "name": "LinkedIn Feed Blocker",
  "version": "1.1",
  "description": "Block LinkedIn feed",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup.html",
    "default_title": "LinkedIn Feed Blocker"
  },
  "permissions": [
    "storage",
    "activeTab",
    "management"
  ],
  "host_permissions": [
    "*://www.linkedin.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.linkedin.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{21b78027-e469-48f3-90f0-6f040b291116}"
    }
  }
}