Examine source code of Website User Blocker

{
  "manifest_version": 2,
  "name": "Website User Blocker",
  "version": "1.0",
  "description": "Allows users to block specific individuals on a designated website.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png",
    "default_title": "Website User Blocker"
  },
  "permissions": [
    "activeTab",
    "storage",
    "https://example.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://example.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b687b992-e553-4667-82c6-905656d6cc56}"
    }
  }
}