Examine source code of QuackQuackGo

{
  "name": "QuackQuackGo",
  "description": "QuackQuackGo is a frontend for Google search but better",
  "manifest_version": 2,
  "version": "1.4",
  "applications": {
    "gecko": {
      "id": "ext@QuackQuackGo.net"
    }
  },
  "icons": {
    "16": "favicon.svg",
    "48": "favicon.svg",
    "96": "favicon.svg"
  },
  "web_accessible_resources": [
    "favicon.svg"
  ],
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "QuackQuackGo",
      "keyword": "q",
      "is_default": true,
      "search_url": "https://QuackQuackGo.net/",
      "search_form": "https://QuackQuackGo.net/?q={searchTerms}",
      "search_url_get_params": "q={searchTerms}",
      "suggest_url": "https://QuackQuackGo.net/suggestion?q={searchTerms}",
      "suggest_url_get_params": "q={searchTerms}"
    }
  }
}