Examine source code of Open in Notion app

{
  "manifest_version": 2,
  "name": "Open in Notion App",
  "description": "Open notion documents with your desktop application directly",
  "version": "1.4.1",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://*.notion.com/*",
    "https://*.notion.so/*",
    "storage"
  ],
  "options_ui": {
    "page": "src/options.html"
  },
  "background": {
    "scripts": [
      "src/notion-hosts.js",
      "src/notion-aasa-exclusions.js",
      "src/url-policy.js",
      "src/settings.js",
      "src/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{58023c2f-0bbe-4f8e-abc5-12f8abf98c7e}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}