Examine source code of Secure Domain Search

{
  "manifest_version": 2,
  "name": "Secure Domain Search",
  "description": "Privacy-first domain availability checker using DNS and RDAP",
  "version": "1.0.0",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Secure Domain Search",
    "default_popup": "app.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "secure-domain-search@local",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}