Examine source code of LinkedIn Spam Blocker

{
  "manifest_version": 3,
  "name": "LinkedIn Spam Blocker",
  "version": "1.2.4",
  "description": "Blocks LinkedIn engagement-bait spam that asks you to \"Comment X and I will send...\"",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/feed/*",
        "https://www.linkedin.com/in/*",
        "https://www.linkedin.com/posts/*",
        "https://www.linkedin.com/company/*",
        "https://www.linkedin.com/groups/*",
        "https://www.linkedin.com/search/*",
        "https://www.linkedin.com/mynetwork/*",
        "https://www.linkedin.com/notifications/*",
        "https://www.linkedin.com/jobs/*",
        "https://www.linkedin.com/newsletters/*",
        "https://www.linkedin.com/pulse/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "LinkedIn Spam Blocker",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "linkedin-spam-blocker@carlos",
      "strict_min_version": "142.0"
    }
  }
}