Examine source code of cosmic-focus

{
  "manifest_version": 2,
  "name": "Extension BE",
  "author": "Inder Kumar",
  "version": "1.0",
  "description": "A cool browser extension that let's you manage your daily task with soothing background and inspiring quotes",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "extension_be@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "bookmarks",
    "<all_urls>"
  ]
}