Examine source code of はちまバスター

{
  "manifest_version": 3,
  "author": "デベロッパー",
  "name": "はちまバスター",
  "short_name": "はちバス",
  "version": "0.24.0",
  "description": "はちまやJINへのリンクを無効にします。",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "contextMenus",
    "history"
  ],
  "background": {
    "scripts": [
      "/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "/content.css"
      ],
      "js": [
        "/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_icon": "icons/48.png",
    "default_title": "はちまバスター",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{394a675e-94dc-4bdc-9a96-48cacdeadfde}"
    }
  }
}